bluuebunny/crossref_metadata_2025_split huggingface dataset:
Electric Double Layer Oriented Eutectic Additive Design toward Stable Zn Anodes with a High Depth of Discharge
Authors: Lyu Huida , Zhao Siwei , Liao Chenyi , Li Guohui , Zhi Jian , Huang Fuqiang 
Published: May 2024

AbstractZnSO4‐based electrolytes for aqueous zinc ion batteries fail to meet practical application metrics due to hydrogen evolution reaction (HER) and dendrite growth. In this work, a highly polarized eutectic additive, glycerophosphorylcholine (GPC) is rationally designed, to regulate the electric double layer (EDL) structure for stable Zn anodes with a high depth of discharge (DOD). On one hand, GPC molecules with abundant hydroxyl groups can precisely regulate the hydrogen bond network in EDL to suppress HER. On the other hand, the enrichment of GPC at the interface is positively responsible for the negative charge density on the Zn surface, which leads to the formation of a robust ZnxPyOz‐rich solid–electrolyte interphase and terminates dendrite growth in the charge‐rich sites. This EDL‐oriented eutectic additive engineering enables highly reversible and selectively (002)‐textured Zn anodes to operate for over 1450 h at a high DOD of 45.3%. Meanwhile, a high‐capacity (185.7 mAh g−1) aqueous Zn||VS2 full cell shows remarkable cycling stability over 220 cycles with an excellent capacity retention of 90.4% even at a low current density of 0.1 A g−1 (0.5 C). This work sheds light on electrolyte design and interface engineering for high‐performance aqueous batteries.
Cultivating High‐Performance Flexible All‐in‐One Supercapacitors With 3D Network Through Continuous Biosynthesis
Authors: Ling Zhang‐Chi , He Qian , Yang Huai‐Bin , Zhou Zhan , Han Zi‐Meng , Luo Xiao‐Han , Yang Kun‐Peng , Guan Qing‐Fang , Yu Shu‐Hong 
Published: May 2024

AbstractFlexible supercapacitors can potentially power next‐generation flexible electronics. However, the mechanical and electrochemical stability of flexible supercapacitors under different flexible conditions is limited by the weak bonding between adjacent layers, posing a significant hindrance to their practical applicability. Herein, based on the uninterrupted 3D network during the growth of bacterial cellulose (BC), a flexible all‐in‐one supercapacitor is cultivated through a continuous biosynthesis process. This strategy ensures the continuity of the 3D network of BC throughout the material, thereby forming a continuous electrode–separator–electrode structure. Benefitting from this bioinspired structure, the all‐in‐one supercapacitor not only achieves a high areal capacitance (3.79 F cm−2) of electrodes but also demonstrates the integration of high tensile strength (2.15 MPa), high shear strength (more than 54.6 kPa), and high bending resistance, indicating a novel pathway toward high‐performance flexible power sources.
Hydroxyl‐Bonded Co Single Atom Site on Boroncarbonitride Surface Realizes Nonsacrificial H2O2 Synthesis in the Near‐Infrared Region
Authors: Ou Honghui , Jin Yu , Chong Ben , Bao Jiahui , Kou Song , Li He , Li Yang , Yan Xiaoqing , Lin Bo , Yang Guidong 
Published: May 2024

AbstractPhotocatalytic synthesis of hydrogen peroxide (H2O2) from O2 and H2O under near‐infrared light is a sustainable renewable energy production strategy, but challenging reaction. The bottleneck of this reaction lies in the regulation of O2 reduction path by photocatalyst. Herein, the center of the one‐step two‐electron reduction (OSR) pathway of O2 for H2O2 evolution via the formation of the hydroxyl‐bonded Co single‐atom sites on boroncarbonitride surface (BCN‐OH2/Co1) is constructed. The experimental and theoretical prediction results confirm that the hydroxyl group on the surface and the electronic band structure of BCN‐OH2/Co1 are the key factor in regulating the O2 reduction pathway. In addition, the hydroxyl‐bonded Co single‐atom sites can further enrich O2 molecules with more electrons, which can avoid the one‐electron reduction of O2 to •O2−, thus promoting the direct two‐electron activation hydrogenation of O2. Consequently, BCN‐OH2/Co1 exhibits a high H2O2 evolution apparent quantum efficiency of 0.8% at 850 nm, better than most of the previously reported photocatalysts. This study reveals an important reaction pathway for the generation of H2O2, emphasizing that precise control of the active site structure of the photocatalyst is essential for achieving efficient conversion of solar‐to‐chemical.
NiCo MOF@Carbon Quantum Dots Anode with Soot Derived Activated Carbon Cathode: An Efficient Asymmetric Configuration for Sustainable High‐Performance Supercapacitors
Authors: Kumari Rita , Prajapati Megha , Ravi Kant Chhaya 
Published: May 2024

AbstractMetal‐organic frameworks (MOFs) exhibit excellent crystalline, hierarchical porous structures and have garnered great scientific interest as a key material for supercapacitor applications. However, the low conductivity of MOFs poses a great challenge to fully utilize their potential. Carbon quantum dots (CQDs) prepared from waste edible soybean oil have been skillfully incorporated into NiCo MOF to enhance supercapacitive performance with its high electronic conductivity and rapid charge transfer kinetics. Symmetrical, spherical CQDs synthesized using the hydrothermal method have been decorated on NiCo MOF nanosheets using a facile solvothermal technique to form the NiCo MOF@CQDs composite. The new composite retains the desirable crystalline structure and hierarchical porosity of MOFs, while the integration of CQDs contributes to enhanced conductivity, yielding a superior specific capacitance of 1063.02 Fg−1 (0.5 Ag−1). An asymmetric supercapacitor device has been fabricated using NiCo MOF@CQDs as positive electrode and waste soybean oil‐derived activated‐carbon as negative electrode. The assembled device shows a remarkable energy and power density of 30.61 Whkg−1 and 0.62 kWkg−1, respectively. Moreover, the device demonstrates a promising Coulombic efficiency of 84.53%, with capacitance retention of 88.61% over 5000 charge–discharge cycles. This work highlights existing challenges and potential sustainable solutions in the realm of emerging energy storage devices.
Efficient Decoupled Electrolytic Water Splitting in Acid through Pseudocapacitive TiO2
Authors: Iesalnieks Mairis , Vanags Mārtiņš , Alsiņa Linda Laima , Eglītis Raivis , Grīnberga Līga , Sherrell Peter C. , Šutka Andris 
Published: May 2024

AbstractWater electrolysis remains a key component in the societal transition to green energy. Membrane electrolyzers are the state‐of‐the‐art technology for water electrolysis, relying on 80 °C operation in highly alkaline electrolytes, which is undesirable for many of the myriad end‐use cases for electrolytic water splitting. Herein, an alternative water electrolysis process, decoupled electrolysis, is described which performed in mild acidic conditions with excellent efficiencies. Decoupled electrolysis sequentially performs the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), at the same catalyst. Here, H+ ions generated from the OER are stored through pseudocapacitive (redox) charge storage, and released to drive the HER. Here, decoupled electrolysis is demonstrated using cheap, abundant, TiO2 for the first time. To achieve decoupled acid electrolysis, ultra‐small anatase TiO2 particles (4.5 nm diameter) are prepared. These ultra‐small TiO2 particles supported on a carbon felt electrode show a highly electrochemical surface area with a capacitance of 375 F g−1. When these electrodes are tested for decoupled water splitting an overall energy efficiency of 52.4% is observed, with excellent stability over 3000 cycles of testing. This technology can provide a viable alternative to membrane electrolyzers—eliminating the need for highly alkaline electrolytes and elevated temperatures.
In situ Electrical Impedance Tomography for Visualizing Water Transportation in Hygroscopic Aerogels
Authors: Tang Miao , Zhong Haosong , Lu Xupeng , Yang Rongliang , Lee Connie Kong Wai , Pan Yexin , Chen Yi , Li Mitch Guijun 
Published: May 2024

AbstractThe global water crisis demands immediate attention, and atmospheric water harvesting (AWH) provides a viable alternative. However, studying the real‐time subtle relationship between water absorption, diffusion, and internal structure for hygroscopic materials is challenging. Herein, a dynamic visualization technique is proposed that utilizes an in situ electrical impedance tomography (EIT) system and a precise reconstruction algorithm to achieve real‐time monitoring of the water sorption process within aerogels from an internal microstructural perspective. These results can be inferred that composites' pore sizes affecting the kinetics of their moisture absorption. In addition, the diffusion path of moisture absorption and the distribution of stored moisture inside aerogels exhibit intrinsic self‐selective behavior, where the fiber skeleton of the aerogel plays a crucial role. In summary, this work proposes a generic EIT‐based technique for the in situ and dynamic monitoring of the hygroscopic process, pointing to an entirely new approach regarding research on AWH materials.
Unveil the Triple Roles of Water Molecule on Power Generation of MXene Derived TiO2 based Moisture Electric Generator
Authors: Liu Chao , Wan Tao , Guan Peiyuan , Li Mengyao , Zhang Shuo , Hu Long , Kuo Yu‐Chieh , Feng Ziheng , Chen Fandi , Zhu Yanzhe , Jia Haowei , Cao Tao , Liang Tianyue , Kumeria Tushar , Su Dawei , Chu Dewei 
Published: May 2024

AbstractEvaporation‐driven electricity generators have been proposed to generate electricity by water interacting with nanostructured materials. However, several proposed mechanisms, such as intrinsic gradient of polar functional groups principle and electrokinetic effect perspective, are in wide discrepancy. Here, through the combination of theoretical calculations involving time dimension on material's moisturizing process and experimental analyses, it is revealed the working principle through the water molecule triple roles in driving moisture electric generators (MEGs): 1) intrinsic H2O absorption on the material surface and splitting into hydroxy group and proton due to the polarizability of the material surface determined by the static electric potential of the materials. This process induces the electrochemical potential difference of the materials via the work function changes; 2) freely diffused protons derived from the H2O splitting work as the ions charge carriers; 3) via the hydrogen bond of the water molecules to drive charge carriers diffuse between opposite electrodes, maintaining the internal circuit current flow. It is successfully unveiled that anatase TiO2 based materials for output voltage changes correlated to the domains’ work function's difference, tuning by the surface adsorption species (H, Cl, OH) and anisotropic exposed crystal facets of the material. This work unveils MEG's general working principle.
Battery Electrolyte Design for Electric Vertical Takeoff and Landing (eVTOL) Platforms
Authors: Dixit Marm , Bisht Anuj , Witherspoon Brett , Essehli Rachid , Amin Ruhul , Duncan Andrew , Hines Jairus , Kweon Chol‐Bum M. , Belharouak Ilias 
Published: May 2024

AbstractThe development of robust and high‐performance battery systems is crucial for the advancement of Electric Vertical Takeoff and Landing (eVTOL) vehicles for urban air mobility. This study evaluates the performance of different lithium‐ion battery chemistries under Electric Vertical Takeoff and Landing (eVTOL) load profiles. The actual flight data coupled with physical models is used to create discharge profiles for testing on developed lithium‐ion cells for eVTOLs. The performance of a standard liquid electrolyte (1.2 M LiPF6 in EC:EMC), labeled Gen‐2, is benchmarked and compared with a fast‐charging electrolyte (1.2 M LiFSI in EC:EMC), labeled XFC. Cell analysis involves the use of various techniques, such as impedance spectroscopy, polarization curves, and capacity retention measurements. Capacity retention is stable for both systems over 500 cycles, but unique discharge capacity trends are observed for different mission segments. During the initial takeoff hover stages, Gen‐2 electrolytes experience substantial voltage fade, while XFC electrolytes maintain consistent behavior. In general, the Gen‐2 electrolyte demonstrated lower discharge overpotentials and higher decay during cycling compared to the XFC electrolyte. This work highlights the complexity of eVTOL battery behavior and provides insights into battery system design, contributing to the advancement of battery energy storage solutions for urban air mobility.
Boosting Electrochemical Ammonia Synthesis via NOx Reduction over Sulfur‐Doped Copper Oxide Nanoneedle Arrays
Authors: Zhang Taisong , Lv Jiangnan , Yang Ruixia , Yan Zhi , Sun Xiaoting , Xu Xiaohong , Liu Yang 
Published: May 2024

AbstractThe electrochemical NOx reduction reactions, involving nitrate and nitrite reduction reactions (NO3−RR and NO2−RR), have emerged as promising approaches for both NO3− and NO2− removal, and ammonium (NH3) synthesis under ambient conditions. However, the incorporation and stabilization of sulfur dopants in the catalysts for efficient NOx reduction are rarely explored, leading to an unclear effect of sulfur on the NOx reduction mechanism. Herein, sulfur‐doped Cu2O (S‐Cu2O) nanoneedle arrays via in situ electrochemical treatment are synthesized. The S‐Cu2O catalyst possesses excellent durability and selectivity for NH3 over a wide range of potentials in NO3−RR, attaining a maximum NH3 Faradaic efficiency of 94% at −0.6 VRHE and a maximum NH3 yield as high as 1.06 mmol h−1 cm−2. In NO3−RR, the sulfur dopant can accelerate the step from NO2− to NH3, contributing superior performance in NO2−RR and assembled Zn−NO2− battery device. Density functional theory (DFT) calculations reveal that the presence of sulfur can enhance the initial step of *NO3 adsorption, lower the reaction barriers for the formation of *NHO intermediate, and activate the H2O dissociation process. The work sheds light on the role of sulfur in enhancing electrocatalytic performance and provides a unique perspective for understanding the NOx reduction mechanism.
Glutamic Acid Induced Proton Substitution of Sodium Vanadate Cathode Promotes High Performance in Aqueous Zinc‐Ion Batteries
Authors: Zhang Pengtao , Gong Yangyang , Fan Shuang , Luo Zhaoyan , Hu Jiangtao , Peng Chao , Zhang Qianling , Li Yongliang , Ren Xiangzhong 
Published: May 2024

AbstractLacking strategies to simultaneously address the narrow interlayer spacing, irreversible phase transitions, dissolution and electrical transport issues of vanadium oxides is restricting their application in aqueous zinc‐ion batteries. Herein, to address these challenges concurrently, an organic‐inorganic hybrid cathode is explored, HNaV6O16·4H2O‐Glu (HNVO‐Glu), through a guest material‐mediated NVO synthesis strategy utilizing glutamic acid (Glu) to induce Na substituted by proton and enable crystal transformation of Na2V6O16·3H2O (NVO). Specially, Glu insertion kills three birds with one arrow: i) induces the formation of a structurally stable monoclinic HNaV6O16·4H2O phase by introducing H into the NVO framework, preventing structural phase change and collapse of NVO material; ii) acts as a pillar to expand the interlayer spacing, which improves the Zn2+ diffusion kinetics; moreover, the polar groups on the Glu surface weaken the electrostatic interaction between Zn2+ and the host materials, further enhancing the zinc‐ionic transport rate; iii) enhances the electrical conductivity of HNVO by converting the p‐type semiconductor into the n‐type semiconductor structure. Consequently, the HNVO‐Glu exhibits a high specific capacity (354.6 mAh g−1 at 1 A g−1), excellent Zn2+ diffusion capability (10−9 to 10−7 cm2 s−1) and outstanding cycling stability with a capacity retention of 87.2% after 12 000 cycles at 10 A g−1.
Indacenodithiophene‐based single‐component ambipolar polymer for high‐performance vertical organic electrochemical transistors and inverters
Authors: Sun Yimin , Lan Yu , Li Meisi , Feng Wang , Xie Miao , Lai Yueping , Li Wei , Cheng Yuhua , Chen Jianhua , Huang Wei , Feng Liang‐Wen , Ding Junqiao 
Published: May 2024

AbstractSingle‐component ambipolar polymers are highly desirable for organic electrochemical transistors (OECTs) and integration into complementary logic circuits with reduced process complexity. However, they often suffer from imbalanced p‐type and n‐type characteristics and/or stability issues. Herein, a novel single‐component ambipolar polymer, namely, gIDT–BBT is reported based on indacenodithiophene (IDT) as the electron donor, benzobisthiadiazole (BBT) as the electron acceptor and oligo ethylene glycol (OEG) as the side chain. Benefitting from the extended backbone planarity and rigidity of IDT, pronounced electron‐withdrawing capability of BBT, favored ionic transport from OEG together with vertical OECT device structure, a nearly balanced ambipolar OECT performance is achieved for gIDT–BBT, revealing a high transconductance of 155.05 ± 1.58/27.28 ± 0.92 mS, a high current on/off ratio >106 and an excellent operational stability under both p‐type and n‐type operation conditions. With gIDT–BBT in hand, furthermore, vertically stacked complementary inverters are successfully fabricated to show a maximum voltage gain of 28 V V−1 (VIN = 0.9 V) and stable operation over 1000 switching cycles, and then used for efficient electrooculogram recording. This work provides a new approach for the development of ambipolar single‐component organic mixed ionic–electronic conductors and establishes a foundation for the manufacture of high‐performance ambipolar OECTs and associated complementary circuits.
NbC Nanoparticles Decorated Carbon Nanofibers as Highly Active and Robust Heterostructural Electrocatalysts for Ammonia Synthesis
Authors: Zhang Zhihao , Niu Aihui , Lv Yaxin , Guo Haoran , Chen Jun Song , Liu Qian , Dong Kai , Sun Xuping , Li Tingshuai 
Published: May 2024

AbstractTransition‐metal carbides with metallic properties have been extensively used as electrocatalysts due to their excellent conductivity and unique electronic structures. Herein, NbC nanoparticles decorated carbon nanofibers (NbC@CNFs) are proposed as an efficient and robust catalyst for electrochemical synthesis of ammonia from nitrate/nitrite reduction, which achieves a high Faradaic efficiency (FE) of 94.4 % and a large ammonia yield of 30.9 mg h−1 mg−1cat.. In situ electrochemical tests reveal the nitrite reduction at the catalyst surface follows the *NO pathway and theoretical calculations reveal the formation of NbC@CNFs heterostructure significantly broadens density of states nearby the Fermi energy. Finite element simulations unveil that the current and electric field converge on the NbC nanoparticles along the fiber, suggesting the dispersed carbides are highly active for nitrite reduction.
Preparation of cellulose nanowhiskers‐reinforced polyurethane: Photoresponsive plastic with ultraviolet protection and superhydrophobic properties
Authors: Al‐Qahtani Salhah D. , Al‐Senani Ghadah M. 
Published: May 2024

AbstractTransparent, photoluminescent, mechanically reliable, ultraviolet protective and superhydrophobic thermoplastic polyurethane (TPU) plastic was developed. A simple strategy to prepare transparent plastic that glows in the dark is to use alkaline earth strontium aluminate (AESA) nanoparticles trapped in thermoplastic polyurethane (TPUR). In order to improve both hardness and transparency of the plastic composite, cellulose nanowhiskers were used as a crosslinker and drier. The colorless plastic substrates exhibited a color shift to greenish when exposed to ultraviolet source. Transmission electron microscope (TEM) was employed to examine the morphology of AESA nanoparticles (8–15 nm in diameter) and cellulose nanowhiskers (3–7 nm in width and 645–665 nm in length). Morphological studies and hardness parameters were used to assess the TPUR samples. Excitation and emission spectral analyses were also employed to study the photoluminescence characteristics. The colorless plastic substrates that were made luminescent showed an excitation band at 388 nm and two emission bands at 452 nm and 515 nm. TPUR samples with greater AESA levels exhibited long‐persistent afterglow, whereas TPUR samples with lower AESA amounts exhibited rapid and reversible fluorescence when irradiated with ultraviolet light. Enhanced UV shielding and superhydrophobicity were observed in the photoluminescent plastic substrates upon increasing the phosphor content.
Implicated subjects: Reckoning with individual and collective histories
Authors: Layton Lynne 
Published: May 2024

AbstractDrawing a connection between the “repetition compulsion” and reparations movements' demand for a “guarantee of non‐repeat,” this essay examines some of the psychological workings of implication in systemic racism by highlighting individual, familial, and collective histories, and by looking at some of what is currently taking place in psychoanalytic institutions.
Decennary Update on Oxidative‐Rearrangement Involving 1,2‐Aryl C−C Migration Around Alkenes: Synthetic and Mechanistic Insights
Authors: Kumar Ravinder 
Published: May 2024

AbstractIn recent years, numerous methodologies on oxidative rearrangements of alkenes have been investigated, that produce multipurpose synthons and heterocyclic scaffolds of potential applications. The present review focused on recently established methodologies for oxidative transformation via 1,2‐aryl migration in alkenes (2013–2023). Special emphasis has been placed on mechanistic pathways to understand the reactivity pattern of different substrates, challenges to enhance selectivity, the key role of different reagents, and effect of different substituents, and how they affect the rearrangement process. Moreover, synthetic limitations and future direction also have been discussed. We believe, this review offers new synthetic and mechanistic insight to develop elegant precursors and approaches to explore the utilization of alkene‐based compounds for natural product synthesis and functional materials.
Zeolite‐Templated Carbons Supported Rh and Ru Electrocatalysts for Highly Active Hydrogen Evolution Reaction
Authors: Cao Yuanxin , Yu Xiaoming , Wang Tianfu , Li Jiahao , Li Nan , Ge Anbang , Ying Jie , Yu Tongwen 
Published: May 2024

AbstractHere, we report the systematical synthesis of zeolite‐templated carbon (ZTC) supported Ru and Rh mono‐ or bi‐metallic electrocatalysts towards hydrogen evolution reaction (HER). The zeolite A or ZSM‐5 derived ZTC supports and metal sites were adjusted, and all electrocatalysts outperformed the commercial Pt/C electrocatalyst for HER performance. In particular, the RhRu/(ZTC/ZSM5) sample exhibited superior catalytic performance with the overpotential of 24.8 mV@10 mA ⋅ cm−2, and outstanding stability with 1 mV drop after 20000 cyclic voltammetry circles. This work offers a simple impregnation method for the synthesis of highly performed HER electrocatalysts supported on porous zeolite‐templated carbon.