mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Mechanical densification synthesis of single-crystalline Ni-rich cathode for high-energy lithium-ion batteries

The intergranular microcracking in polycrystalline Ni-rich cathode particle is led by anisotropic volume change and stress corrosion along grain boundary,accelerating battery performance decay.Herein,we have suggested a simple but advanced solid-state method that ensures both uniform transition metal distribution and single-crystalline morphology for Ni-rich cathode synthesis without sophisticated coprecipitation.Pelletization-assisted mechanical densification (PAMD) process on solid-state precursor mixture enables the dynamic mass transfer through the increased solid-solid contact area which facilitates the grain growth during sintering process,readily forming micro-sized single-crystalline particle.Furthermore,the improved chemical reactivity by a combination of capillary effect and vacancyassisted diffusion provides homogeneous element distribution within each primary particle.As a result,single-crystalline Ni-rich cathode with PAMD process has eliminated a potential evolution of intergranular cracking,thus achieving superior energy retention capability of 85% over 150 cycles compared to polycrystalline Ni-rich particle even after high-pressure calendering process (corresponding to electrode density of ~3.6 g cm~(-3)) and high cut-off voltage cycling.This work provides a concrete perspective on developing facile synthetic route of micron-sized single-crystalline Ni-rich cathode materials for high energy density lithium-ion batteries (LIBs).
Strengths,weaknesses,opportunities,and threats (SWOT) analysis of supercapacitors:A review

The development of clean and sustainable energy sources has received widespread interest in the past few decades due to the rolling energy demands while extenuating the rising tiers of greenhouse gases and environmental pollution.Due to their intermittent nature,these green and sustainable sources require appropriate energy storage systems.Amongst different energy storage technologies,electrochemical energy storage devices,particularly supercapacitors (SCs),have fascinated global attention for their utilization in electric vehicles,power supports,portable electronics,and many others application requiring electric energy devices for their operation.Thus,the growth of SCs in the commercial market has squeezed requirements,and further developments are obligatory for their effective industrialization.In the meantime,SCs also face technical complications and contests for their introduction in industrial settings because of their low energy density and high Levelized cost.The present study combines core strengths,weaknesses,opportunities,and threats (SWOT) analysis of SCs with new perspectives and recent ideas.The challenges and the future progressive prospects of SCs are also presented in detail.This review will afford consistent direction and new superhighways for the further development of SCs as standalone and complementary energy storage systems.
Deep learning-based battery state of charge estimation: Enhancing estimation performance with unlabelled training samples

The estimation of state of charge (SOC) using deep neural networks (DNN) generally requires a considerable number of labelled samples for training, which refer to the current and voltage pieces with knowing their corresponding SOCs. However, the collection of labelled samples is costly and time-consuming. In contrast, the unlabelled training samples, which consist of the current and voltage data with unknown SOCs, are easy to obtain. In view of this, this paper proposes an improved DNN for SOC estimation by effectively using both a pool of unlabelled samples and a limited number of labelled samples. Besides the traditional supervised network, the proposed method uses an input reconstruction network to reformulate the time dependency features of the voltage and current. In this way, the developed network can extract useful information from the unlabelled samples. The proposed method is validated under different drive cycles and temperature conditions. The results reveal that the SOC estimation accuracy of the DNN trained with both labelled and unlabelled samples outperforms that of only using a limited number of labelled samples. In addition, when the dataset with reduced number of labelled samples to some extent is used to test the developed network, it is found that the proposed method performs well and is robust in producing the model outputs with the required accuracy when the unlabelled samples are involved in the model training. Furthermore, the proposed method is evaluated with different recurrent neural networks (RNNs) applied to the input reconstruction module. The results indicate that the proposed method is feasible for various RNN algorithms, and it could be flexibly applied to other conditions as required.
Improving the UV-light stability of silicon heterojunction solar cells through plasmon-enhanced luminescence downshifting of YVO_4:Eu~(3+),Bi~(3+) nanophosphors decorated with Ag nanoparticles

The ultraviolet (UV) light stability of silicon heterojunction (SHJ) solar cells should be addressed before large-scale production and applications.Introducing downshifting (DS) nanophosphors on top of solar cells that can convert UV light to visible light may reduce UV-induced degradation (UVID) without sacrificing the power conversion efficiency (PCE).Herein,a novel composite DS nanomaterial composed of YVO_4:Eu~(3+),Bi~(3+) nanoparticles (NPs) and Ag NPs was synthesized and introduced onto the incident light side of industrial SHJ solar cells to achieve UV shielding.The YVO_4:Eu~(3+),Bi~(3+) NPs and Ag NPs were synthesized via a sol-gel method and a wet chemical reduction method,respectively.Then,a composite structure of the YVO_4:Eu~(3+),Bi~(3+) NPs decorated with Ag NPs was synthesized by an ultrasonic method.The emission intensities of the YVO_4:Eu~(3+),Bi~(3+) nanophosphors were significantly enhanced upon decoration with an appropriate amount of ~20 nm Ag NPs due to the localized surface plasmon resonance (LSPR) effect.Upon the introduction of LSPR-enhanced downshifting,the SHJ solar cells exhibited an ~0.54% relative decrease in PCE degradation under UV irradiation with a cumulative dose of 45 kW h compared to their counterparts,suggesting excellent potential for application in UV-light stability enhancement of solar cells or modules.
Fundamentals,recent developments and prospects of lithium and non-lithium electrochemical rechargeable battery systems

The present and future energy requirements of mankind can be fulfilled with sustained research and development efforts by global scientists.The purpose of this review paper is to provide an overview of the fundamentals,recent advancements on Lithium and non-Lithium electrochemical rechargeable battery systems,and their future prospects.The initial part of this review paper is dedicated to the advancement and challenges faced by the conventional rechargeable batteries,such as lead-acid,Ni-Cd and Ni-MH batteries.The subsequent section of this review focuses on an in-depth analysis of two major categories of rechargeable batteries,namely lithium-based rechargeable battery systems and alternative non-Lithium rechargeable battery systems.The working principle,construction,and a few important research progress on Li-ion,Li-O_2,Li-CO_2 and Li-S batteries have been highlighted.The recent progress and challenges of the alternate batteries such as Na-ion,Na-S,Mg-ion,K-ion,Al-ion,Al-air,Zn-ion and Zn-air are also discussed in this review.The large gap between theoretical and practical electrochemical values for the alternate battery system must be filled by adopting a series of design architectures followed by modern instrumentation for developing next-generation batteries in a sustainable and efficient way.
Simultaneous realization of high sulfur utilization and lithium dendrite-free via dual-effect kinetic regulation strategy toward lithium-sulfur batteries

With the high theoretical specific capacity and energy density,lithium-sulfur batteries (LSBs) have been intensively studied as promising candidates for energy storage devices.However,LSBs are largely hindered by inferior sulfur utilization and uncontrollable dendritic growth.Herein,a hierarchical functionalization strategy of stepwise catalytic-adsorption-conversion for sulfur species via the synergetic of the efficiently catalytic host cathode and light multifunctional interlayer has been proposed to concurrently address the issues arising on the dual sides of the LSBs.The multi-layer SnS_2 micro-flowers embedded into the natural three-dimensional (3D) interconnected carbonized bacterial cellulose (CBC) nanofibers are fabricated as the sulfur host that provides numerous catalytic sites for the rapid catalytic conversion of sulfur species.Moreover,the distinctive CBC-based SnO_2-SnS_2 heterostructure network accompanied high conductive carbon nanofibers as the multifunctional interlayer promotes the rapid anchoringdiffusion-conversion of lithium polysulfides,Li~+ flux redistribution,and uniform Li deposition.LSBs equipped with our strategy exhibit a high reversible capacity of 1361.5 mA h g~(-1) at 0.2 C and superior cycling stability with an ultra-low capacity fading of 0.031% per cycle in 1000 cycles at 1.5 C and 0.046% at 3 C.A favorable specific capacity of 859.5 mA h g~(-1) at 0.3 C is achieved with a high sulfur mass loading of 5.2 mg cm~(-2),highlighting the potential of practical application.The rational design in this work can provide a feasible solution for high-performance LSBs and promote the development of advanced energy storage devices.
Lamellar-stacked cobalt-based nanopiles integrated with nitrogen/sulfur co-doped graphene as a bifunctional electrocatalyst for ultralong-term zinc-air batteries

Sluggish oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) kinetics inevitably impede the practical performance of rechargeable zinc-air batteries.Thus,combing the structural designability of transition metal-based electrocatalysts with anionic regulation is highly desired.Herein,mesoporous lamellar-stacked cobalt-based nanopiles with surface-sulfurization modification are elaborately designed and integrated with N/S co-doped graphene to build a robust OER/ORR bifunctional electrocatalyst.The lamellar-stacking mode of mesoporous nanosheets with abundant channels accelerates gas-liquid mass transfer,and partial-sulfurization of cobalt-based matrix surface efficiently improves the intrinsic OER activity.Meanwhile,N/S co-doped graphene further reinforces the ORR active sites while providing a stable conductive skeleton.As expected,this composite electrocatalyst delivers considerable bifunctional activity and stability,with an OER overpotential of 323 mV at 10 mA cm~(-2) and high durability.When applied in zinc-air batteries,remarkable ultralong-term stability over 4000 cycles and a maximum power density of 150.1 mW cm~(-2) are achieved.This work provides new insight into structurecomposition synergistic design of rapid-kinetics OER/ORR bifunctional electrocatalyst for nextgeneration metal-air batteries.
Performance enhancement in organic solar cells and photodetectors enabled by donor phase optimization at the surface of hole transport layer

The domain purity, material crystallinity and distribution at the interface between the active layer and the transport layer have an important impact on the performance of organic solar cells (OSCs) and organic photodetectors (OPDs), while this focal issue has received less attention in previous studies. From this perspective, a new method to simultaneously enhance the performance of OSC and OPD is proposed, namely, using a sequential deposition method to first construct a compact stacking structure of dualdonor (D18-Cl:PTO2) eutectic in the donor layer, and then induce the ordered deposition of the acceptor (Y6). Compared with the conventional bulk heterojunction (BHJ), the active layer realized by this method not only improves the crystallinity and stacking order of the constituent material on the surface of the transport layer, but also regulates a good vertical distribution, which is conducive to improving the charge transport and extraction efficiency, reducing the leakage current, and enhancing the stability of the device. As a result, the OSC device based on the D18-Cl:PTO2/Y6 structure achieves a power conversion efficiency of up to 17.65% and good light-degradation stability, which is much better than that of BHJbased OSC (PCE of 16.37%). For the OPD, the dark current at reverse bias is reduced by more than an order of magnitude, and the maximum responsivity is improved to 0.52 A/W through the optimization of the donor phase at the interface. Moreover, the strategy does not require additional post-processing compared to the BHJ preparation, which reduces the device construction cost and process complexity, providing an effective way for developing high-performance organic optoelectronic devices.
Design of copper oxide and oxygen codoped graphitic carbon nitride activator for efficient radical and nonradical activation of peroxymonosulfate

Rational regulation of stable graphitic carbon nitride (CN) for superior peroxymonosulfate (PMS) activation is important in the catalytic degradation of water contaminants. In this work, the copper oxide and oxygen co-doped graphitic carbon nitride (CuO/O-CN) was prepared via one-step synthesis and applied in activating PMS for oxytetracycline (OTC) degradation, displaying superior catalytic performance. Systematic characterization and theoretical calculations indicated that the synergistic effect between the oxygen site of CN and CuO can modulate the electronic structure of the whole composite further facilitating the formation of non-radical ~1O_2 and various reactive radicals. Results of the influencing factor experiments revealed that CuO/O-CN has a strong resistance to the environmental impact. The degradation efficiency of OTC in the real water environment even exceeded that in the deionized water. After four successive runs of the optimal catalyst, the OTC removal rate was still as high as 91.3%. This work developed a high-efficiency PMS activator to remove refractory pollutants via both radical pathway and non-radical pathway, which showed a promising potential in the treatment of wastewaters.
Tetrapeptide self-assembled multicolor fluorescent nanoparticles for bioimaging applications

The biocompatibility and biodegradability of peptide self-assembled materials makes them suitable for many biological applications, such as targeted drug delivery, bioimaging, and tracking of therapeutic agents. According to our previous research, self-assembled fluorescent peptide nanoparticles can overcome the intrinsic optical properties of peptides. However, monochromatic fluorescent nanomaterials have many limitations as luminescent agents in biomedical applications. Therefore, combining different fluorescent species into one nanostructure to prepare fluorescent nanoparticles with multiple emission wavelengths has become a very attractive research area in the bioimaging field. In this study, the tetrapeptide Trp-Trp-Trp-Trp (WWWW) was self-assembled into multicolor fluorescent nanoparticles (TPNPs). The results have demonstrated that TPNPs have the blue, green, red and near infrared (NIR) fluorescence emission wavelength. Moreover, TPNPs have shown excellent performance in multicolor bioimaging, biocompatibility, and photostability. The facile preparation and multicolor fluorescence features make TPNPs potentially useful in multiplex bioanalysis and diagnostics.
Facile synthesis of ultrabright luminogens with specific lipid droplets targeting feature for in vivo two-photon fluorescence retina imaging

The application of fluorescent probes for in vivo retinal imaging is of great importance, which could provide direct and crucial imaging evidence for a better understanding of common eye diseases. Herein, a group of bright organic luminogens with typical electron-donating (D) and electron-accepting (A) structures (abbreviated as LDs-BDM, LDs-BTM, and LDs-BHM) was synthesized through a simple single-step reaction. They were found to be efficient solid-state emitters with high fluorescence quantum yields of above 70% (e.g., 83.7% for LDs-BTM). Their light-emission properties could be tuned by the modulation of π-conjugation effect with methoxy groups at different substituent positions. Their resulting fluorescent nanoparticles (NPs) were demonstrated as specific lipid droplets (LDs) targeting probes with high brightness, good biocompatibility, and satisfactory photostability. LDs-BTM NPs with a large two-photon absorption cross section (σ2 =249 GM) were further utilized as ultrabright two-photon fluorescence (2PF) nanoprobes for in vivo retina imaging of live zebrafish by NIR excitation at an ultralow concentration (0.5 μmol/L). Integrated histological structures at the tissue level and corresponding fine details at the cellular level of the embryonic retina of live zebrafish were clearly demonstrated. This is the first report of using ultrabright LDs-targeting nanoprobes to accurately measure fine details in the retina with 2PF microscopic technique. These good results are anticipated to open up a new avenue in the development of efficient 2PF emitters for non-invasive bioimaging of living animals.
One-pot synthesis of Fe_xO_y nanoparticles embedded within N-doped carbon layers as highly efficient and selective catalysts for the hydrogenation of nitroarenes

Inhibiting the side reactions while promoting hydrogenation are the main target for the production of functional anilines from nitroarenes; consequently, the preparation of an ideal catalyst to improve chemical selectivity is one of the hot issues. In this work, we provided an easy-to-prepare catalyst with Ndoped carbon layers, where the FexOy nanoparticles were encapsulated and distributed uniformly. The structural features of catalyst were characterized by several techniques, and the selected catalyst was next applied to the hydrogenation of nitrobenzene under varied conditions, involving temperature, holding period and H2 pressure. Subsequently, we conducted the synthesis of more than 16 substrates for the corresponding anilines with varied functional groups. The hydrogenation protocol to gram-scale synthesis as well as lifecycle performance were also demonstrated in the batch reactor, together with the explanation of its catalytic mechanisms. Overall, the present work provides an available preparation of simple but highly efficient catalysts for the production or aromatic amines, which will be benefit for the sustainable development of this field in near future.
Synchronous activation of Ag nanoparticles and BiOBr for boosting solar-driven CO_2 reduction

Artificial photosynthesis of valuable chemicals from CO_2 is a potential way to achieve sustainable carbon cycle. The CO_2 conversion activity is still inhibited by the sluggish charge kinetics and poor CO_2 activation. Herein, Ag nanoparticles coupled BiOBr have been constructed by in-situ photoreduction strategy. The crafting of interface between Ag nanoparticles and BiOBr nanosheets, achieving an ultra-fast charge transfer. The BiOBr semiconductor excited electrons and plasmonic Ag nanoparticles generated high-energy hot electrons synchronous accelerates the C=O double bond activation. Thus, the optimized Ag/BiOBr-2 heterostructure shows excellent CO_2 photoreduction activity with CO production of 133.75 and 6.83 μmol/g under 5 h of 300W Xe lamp and visible light (λ > 400 nm) irradiation, which is 1.51 and 2.81 folds versus the pristine BiOBr, respectively. The mechanism of CO_2 photoreduction was in-depth understood through in-situ FT-IR spectrum and density functional theory calculations. This study provides some new perspectives into efficient photocatalytic CO_2 reduction.
Boosted photocatalytic efficiency of GQDs sensitized (BiO)_2CO_3/β-Bi_2O_3 heterojunction via enhanced interfacial charge transfer

The NO gas is easily oxidized to form toxic by-products (NO_2) during the oxidation process, which are adsorbed on the catalyst surface and inhibit the subsequent reaction. For photocatalytic NO removal, a significant challenge is to achieve catalytic stability while maintaining high conversion efficiency. Here, we fabricated a (BiO)_2CO_3/β-Bi_2O_3 heterostructure that enables efficient charge transfer and promotes the NO removal. We propose that the catalytic stability depends on the heterojunction structure, which is able to generate interfacial charge transfer channels. In addition, we further introduce graphene quantum dots on the heterojunction structure, which further strengthens the interfacial charge transfer dynamics and finally realizes that the NO_2 byproduct could gain electrons and convert to the final product (nitrite or nitrate). This composite structure not only exhibits high activity for NO removal but also maintains long-term stability under visible light.
Size Effect of Impact Abrasive Particles on Wear and Surface Hardening Behavior of High-Manganese Steel

The size effect of impact abrasive particles on wear and surface hardening behavior of high-manganese steel was studied. Impact wear tests were carried out on MLD-10 tester with abrasive particle sizes of 6.0-0.75 mm, respectively. The results showed that the impact wear behavior and surface hardening mechanism of high-manganese steel were affected by the size of abrasive particles. A critical size of abrasive particle might exhibit to distinguish the impact wear behavior. When the abrasive particle size was larger than 0.75 mm, the wear mass loss generally showed a decreasing trend with the decrease of the abrasive particle size. Dislocation strengthening and mechanical twinning contributed to the good work hardening behavior. However, effective surface hardening layer could not be formed for sample tested with particle size of 0.75 mm and the wear mass loss was the highest among all the conditions. The weak hardening effect led to the sharp increase of the wear mass loss. Press-in abrasives could be observed on the wear surface when the abrasive particle size was larger than 0.75 mm. The press-in abrasives were peeled off from the wear surface and broken, leaving deep grooves and peeling pits. Material exchange with the sample would occur with the flow of abrasives. A large area of furrow was formed on the wear surface. For particle size of 0.75 mm, aggregated abrasives formed a dynamic buffer layer on the surface and the stress distribution was more even. The formation of buffer layer would lower the effect of the impact load and the work hardening effect could not be fully activated. The mutual extrusion among the abrasives, friction wheel and sample caused plastic deformation of the worn surface during impact test. The present study would help guiding to select the application field of high-manganese steel more precisely.
Sensitivity and specificity of hearing tests for screening hearing loss in older adults

Objectives: The study aimed to determine the most appropriate hearing screening test to identify disabling hearing loss for adults aged 65 years or older. Methods: This study included 577 older adults. Four hearing screening tests were considered in the study, including the Hearing Handicap Inventory for Elderly Screening(HHIE-s), three single question tests, the whisper test, and the finger rub test. The sensitivity and specificity of these tests referenced to the hearing threshold of disabling hearing loss were estimated. Results: Among all tests, only the single self-perception question(0.7064 for sensitivity; 0.7225 for specificity) and whisper test(0.7833 for sensitivity; 0.7708 for specificity) could obtain both sensitivity and specificity higher than 70% for adults aged ≥65 years. Conclusion: Overall, we suggest using the whisper test to identify disabling hearing loss(>40 dB HL at the better ear) for adults aged 65 years or older. However, if the conditions do not permit, the single selfperception question is also acceptable. Moreover, HHIE-s might not be a good test to detect disabling hearing loss for adults aged 80 years or older.