bluuebunny/crossref_metadata_2025_split huggingface dataset:
Promising VO2(B)/rGO Heterojunction Cathode for Building High‐Capacity and Long‐Lifespan Ca‐Ion Batteries
Authors: Wang Yu , Wang Junjun , Zhang Wenwei , Chao Feiyang , Li Jinghao , Kong Qinghong , Qiao Fan , Zhang Lei , Huang Meng , An Qinyou 
Published: March 2024

AbstractCalciumion batteries (CIBs) are an appealing energy storage technology owing to the low redox potential of Ca2+/Ca and the abundant Ca reserves in the earth's crust. However, suitable cathode materials with high capacity and long lifespan are scarce. Herein, VO2(B)/reduced graphene oxide (rGO) heterojunction formed by interfacial V─O─C bonds is constructed and first reported as a cathode material for CIBs, which exhibits an ultrahigh discharge capacity of 319.2 mAh g−1 and exceptional long lifespan (3000 cycles at 500 mA g−1 with capacity retention of 85%). In addition, VO2(B)/rGO heterojunction also shows an outstanding rate capability at 50 °C (127.1 mAh g−1 at 1000 mA g−1). The remarkable electrochemical performance is attributed to the big tunnel structures of VO2(B) and the role of rGO in enhancing electronic conductivity. Density functional theory calculations reveal a feasible Ca2+ diffusion path at the interface. Furthermore, a reversible single‐phase insertion/extraction reaction is revealed by in situ X‐ray diffraction, ex situ Raman, and ex situ X‐ray photoelectron spectroscopy. This work demonstrates that VO2(B)/rGO holds great potential for building high‐capacity and long‐lifespan CIBs.
Ultra‐Stable Yellow Monolithic Perovskite Quantum Dots Film for Backlit Display
Authors: Lin Jidong , Chen Shuxin , Ye Weichao , Zeng Yongxi , Xiao Han , Pang Tao , Zheng Yuanhui , Zhuang Bin , Huang Feng , Chen Daqin 
Published: March 2024

AbstractPerovskite quantum dots (PeQDs) are seen as the credible alternative to traditional QDs ascolor converter in liquid crystal display (LCD). Unfortunately, PeQDs sufferfrom instability and color separation, and the prepared PeQDs enhanced films(PQDFs) need the protection of expensive barrier layers, which significantly increases price and limits their application. Herein, large‐area yellow monolithic PQDF is fabricated with both green CsPbBr3 and red CsPbBr1I2QDs encapsulated in the dual matrices of inorganic glass and polypropylene (PP) via an industrialized melt extruding & rolling method. The PQDF shows high photoluminescence quantum yield (PLQY) of 92% and narrow full width at half maximum (FWHM) of 19 nm (green) and 33 nm (red). Importantly, the bare PQDF without barrier layers can pass harsh aging test at 85 °C/85% RH and reach anoperating T90 lifetime over 1000 h. Finally, a white backlit unit is designed by coupling yellow monolithic PQDF with blue light guide panel, and the constructed prototype display shows superior color rendering performance forits narrow green/red emissions, reaching a color gamut of 110% National Television System Committee (NTSC). This work provides a novel and easy‐to‐industrialize route to prepare PQDFs to realize their commercial application in backlit display.
Reverse‐Current Tolerance for Hydrogen Evolution Reaction Activity of Lead‐Decorated Nickel Catalysts in Zero‐Gap Alkaline Water Electrolysis Systems
Authors: Jung Sang‐Mun , Kim Yoona , Lee Byung‐Jo , Jung Hyeonjung , Kwon Jaesub , Lee Jinhyeon , Kim Kyu‐Su , Kim Young‐Woo , Kim Ki‐Jeong , Cho Hyun‐Seok , Park Jong Hyeok , Han Jeong Woo , Kim Yong‐Tae 
Published: March 2024

AbstractAlkaline water electrolysis (AWE) systems offer a cost‐effective and scalable approach for large‐scale hydrogen production using renewable energy sources. However, their susceptibility to load fluctuations, particularly the reverse‐current (RC) phenomenon during shutdown events, poses a significant challenge to the long‐term stability and scalability of these systems. Herein, a catalytic approach for enhancing the RC tolerance in AWE systems by using Pb‐decorated Ni cathode catalysts (Pb/Ni) is introduced. The oxidation of Pb/Ni by repeated RC lowers the electromotive force for the reverse current operation, and consequently, imparts RC tolerance. Intriguingly, contrary to the expectation that the decoration with lead, an inert material for the hydrogen evolution reaction (HER), will interfere with the hydrogen generation of the Ni catalyst, the presence of Pb on the Ni cathode after the RC flow promotes both the proton desorption and water‐dissociation steps, improving the HER activity. Furthermore, the AWE stack testing with Pb/Ni catalysts is perfectly operated, demonstrating remarkably enhanced RC tolerance during startup/shut‐down (SU/SD) testing protocol. This paper presents a new strategy for mitigating the AWE performance degradation induced by RC flow and for achieving Pb/Ni catalysts with improved operational durability against RC flow in AWE systems.
Self‐Healing Elastic Electronics: Materials Design, Mechanisms, and Applications
Authors: Wan Yi , Li Xiang‐Chun , Yuan Haotian , Liu Daxiong , Lai Wen‐Yong 
Published: March 2024

AbstractTraditional electronic devices inevitably undergo degradation over time due to deformation, fatigue, or mechanical damage, ultimately resulting in device failure. To overcome this issue, researchers have pioneered the field of elastic electronics, incorporating higher mechanical tensile properties or strain resistance into electronic devices. Elastic materials, especially self‐healing elastomers (SHEs) are regarded as a crucial component in elastic electronics, offering the potential for restoring functionality and prolonging the lifespan of electronic devices. SHEs possess remarkable ability to tolerate significant deformation and utilize intrinsic dynamic chemical bonds to autonomously repair themselves from varying degrees of damage. The acquisition of intrinsic SHEs is key to the development of self‐healing elastic electronics and has attracted global attention. This review offers a comprehensive overview of the current advancements in self‐healing elastic electronics. First, the various self‐healing mechanisms present in elastomeric material systems are summarized. Second, the design strategies for constructing SHEs based on self‐healing mechanisms are reviewed in detail, with a particular emphasis on dynamic covalent and non‐covalent bonds. Subsequently, various optoelectronic applications of SHEs in elastic electronics are summarized. Finally, the challenges and prospects that lie ahead in order to foster further development in this rapidly growing field are outlined.
Direct‐Current Triboelectric Nanogenerators Based on Contact–Separation Mode and Conductive–Adhesive Interface
Authors: Shi Kunming , Chai Bin , Zou Haiyang , Wen Zhen , Liu Yijie , He Meng , Chen Jie , Jiang Pingkai , Huang Xingyi 
Published: March 2024

AbstractDirect‐current triboelectric nanogenerators (DC‐TENGs), which are used in smart electronics and energy storage, have attracted tremendous scientific interest owing to their rectification‐free and high energy utilization efficiency. In this study, the authors propose a new type of DC‐TENG that operates in the contact–separation mode with a unique adhesive–conductive interface for the first time. The results demonstrate that the TENG output increases with increasing interfacial adhesion strength; both the adhesive polymer and conductive tribomaterial are essential factors for the DC output. The proposed mechanism is based on mechanoion generation via covalent bond cleavage during material transfer and the charge leakage effect. Specifically, the DC‐TENG exhibits unique frequency‐decreasing and force‐enhancing output characteristics. It can directly drive LEDs or charge commercial capacitors. By integrating a stretchable electrode, an adhesive‐based single‐electrode TENG can be used as a strain sensor or material detector. This work presents a new type of DC‐TENG with a conventional two‐electrode configuration and provides new perspectives on the fundamental research and applications of DC‐TENGs.
Droplet‐Directed Anisotropic Assembly of Semifootball‐Like Carbon Nanoparticles with Multimodal Pore Architectures
Authors: Guo Peiting , Zhao Ruizheng , Zhang Zekai , Li Jinying , Zhang Wei , Wang Aixia , Kang Tianke , Lian Cheng , Guo Ziyang , Wang Jin , Zhang Jiangwei , Ma Yuzhu 
Published: March 2024

AbstractHierarchical porous carbon nanoparticles, with tailored asymmetric morphologies and pore structures, have great implications in high‐performance electrode materials. However, the controlled synthesis of anisotropic carbon nanoparticles with tailored multimodal pore structures remains a challenge. Herein, a droplet‐directed anisotropic assembly approach to synthesize asymmetric carbon nanoparticles with macro/mesopores is demonstrated. This synthesis relies on the anisotropic growth of mesoporous polydopamine (PDA) seeds on the emulsion interfaces and the subsequent immersion of 1,3,5‐trimethylbenzene (TMB) droplets into the seeds. The obtained carbon nanoparticles present a semifootball‐shaped morphology with a high surface area (383 m2 g−1), well‐controlled macropores (≈105 nm), and mesopores (≈3.8 nm). By tuning the polarity of the oil phase, the morphologies transform from non‐porous spheres to semifootball‐like architectures and finally to nano‐ellipsoid with meso‐channels. The pore structures are further optimized by ZnCl2 activation, and the semifootball‐like carbon nanoparticles with modulated pore compositions deliver a high reversible capability, excellent rate performance (215 F g−1 at 0.05 A g−1 and 143 F g−1 at 20 A g−1 in organic electrolyte), and enhanced energy density (53.4 Wh Kg−1). Simulation results elucidate the structure–activity relationship between the multistage pore structure and electrochemical performance, i.e., pore hierarchy enhances ion diffusion flux, and large‐mesopore structure facilitates rate performance.
Luminescent Solar Concentrator with Advanced Structure for Reabsorption Loss Suppression and Synergistic Energy Harvesting
Authors: Xia Pengfei , Sun Hongcan , Guo Haotian , Zhao Kaitian , Liang Cai , Lu Changgui , Wang Zhuyuan , Xu Shuhong , Wang Chunlei 
Published: March 2024

AbstractAs large‐area and optically transparent photon harvesting devices, luminescent solar concentrators (LSCs) are promising candidates for building‐integrated photovoltaics owing to their high transmittance and resistance to shadowing effects existing in solar cells. Up to now, there are still many challenges in the practical application of LSCs: 1) Reabsorption loss is inevitable during photoluminescence transmission due to indirect illumination of solar cells in LSC system. 2) Satisfactory energy harvesting cannot be achieved in rainy conditions due to the substantial attenuation of the incident light intensity. 3) Evaporation residue on the surface of LSCs leads to device performance degradation. Pioneering researches and feasible strategies for reabsorption loss suppression, energy harvesting in rainy days as well as self‐cleaning property are still lacking demonstration. In this work, reabsorption loss is suppressed based on advanced structural LSCs with universally applicable optical spacer layer. Then the integrated LSCs with droplet‐based electricity generator (DEG) are proposed for the first time. Such DEG‐LSCs not only realize synergistic harvesting of solar and raindrop energy, but also possess self‐cleaning properties. Finally, a self‐powered temperature and humidity sensing system is designed and demonstrated to provide feasible ideas for the practical application of DEG‐LSCs in self‐powered intelligent buildings.
In situ Surface Reconstruction in Pure Water by Ice‐Confined Freeze‐Thaw Strategy for High‐Performance Core–Shell Structural Perovskite Nanocrystals
Authors: Jin Xudong , Wang Chengqiang , Miao Yanqin , Liu Peizhi , Ji Jianlong , Chang Mengjie , Xu Bingshe , Zhao Min , Tian Jianjun , Guo Junjie 
Published: March 2024

AbstractConstructing core–shell structure is recognized as an effective approach for the conventional colloidal semiconductor nanocrystals (NCs) to improve their stability and optical performance in optoelectronic applications. It is, however, still a challenge to develop green manufacture for core–shell lead halide perovskite NCs (PeNCs). Herein, an ice‐confined freeze‐thaw strategy using pure water solvent is devised, which results in the surface reconstruction of CsPbBr3 PeNCs thereby formatting the CsPb2Br5 shell on the CsPbBr3 core to achieve core–shell CsPbBr3@CsPb2Br5. The in situ formation of the CsPb2Br5 shell is attributed to the transformation of the intermediate polyhedral structure with the help of amphiphilic 4‐dodecylbenzene sulfonic acid ligand in the precursor solution. The PeNCs show ultrahigh photoluminescence quantum yield of 95%, remarkable stability and humidity‐resistance. Moreover, both light‐emitting diodes and stretchable fluorescence hydrogels based on the PeNCs exhibit a boosted optical performance and excellent operation stability. The organic solvent‐free and recyclability of this strategy pave a novel way to the environmentally friendly and large‐scale manufacture of high‐quality PeNCs for optoelectronic application.
Dual‐ROS Sensitive Moieties Conjugate Inhibits Curcumin Oxidative Degradation for Colitis Precise Therapy
Authors: Liang Dunsheng , Shen Xiaofan , Han Lu , Ren Hao , Zang Tao , Tan Lulu , Lu Zhaoxiang , Liao Xiaoping , Vetha Berwin Singh Swami , Liu Yahong , Zhang Chaoqun , Sun Jian 
Published: March 2024

AbstractCurcumin, a natural bioactive polyphenol with diverse molecular targets, is well known for its anti‐oxidation and anti‐inflammatory potential. However, curcumin exhibits low solubility (<1 µg mL−1), poor tissue‐targeting ability, and rapid oxidative degradation, resulting in poor bioavailability and stability for inflammatory therapy. Here, poly(diselenide‐oxalate‐curcumin) nanoparticle (SeOC‐NP) with dual‐reactive oxygen species (ROS) sensitive chemical moieties (diselenide and peroxalate ester bonds) is fabricated by a one‐step synthetic strategy. The results confirmed that dual‐ROS sensitive chemical moieties endowed SeOC‐NP with the ability of targeted delivery of curcumin and significantly suppress oxidative degradation of curcumin for high‐efficiency inflammatory therapy. In detail, the degradation amount of curcumin for SeOC is about 4‐fold lower than that of free curcumin in an oxidative microenvironment. As a result, SeOC‐NP significantly enhanced the antioxidant activity and anti‐inflammatory efficacy of curcumin in vitro analysis by scavenging intracellular ROS and suppressing the secretion of nitric oxide and pro‐inflammatory cytokines. In mouse colitis models, orally administered SeOC‐NP can remarkably alleviate the symptoms of IBD and maintain the homeostasis of gut microbiota. This work provided a simple and effective strategy to fabricate ROS‐responsive micellar and enhance the oxidation stability of medicine for precise therapeutic inflammation.
Tougher Bioadhesives through Dual Stimulation Strategies
Authors: Ang Elwin W. J. , Djordjevic Ivan , Solic Ivan , Goh Chen Yee , Steele Terry W. J. 
Published: March 2024

AbstractCarbene‐based bioadhesives have favourable attributes for tissue adhesion, including non‐specific bonding to wet and dry tissues, but suffer from relatively weak fracture strength after photocuring. Light irradiation of carbene‐precursor (diazirine) also creates inert side products that are absent under thermal activation. Herein, a dual activation method combines light irradiation at elevated temperatures for the evaluation of diazirine depletion and effects on cohesive properties. A customized photo/thermal‐rheometer evaluates viscoelastic properties, correlated to the kinetics of carbene:diazoalkane ratios via19F NMR). The latter exploits the sensitive ‐CF3functional group to determine joule‐based light/temperature kinetics on trifluoroaryl diazirine consumption. The combination of heat and photoactivation produced bioadhesives that are 3× tougher compared to control. Dual thermal/light irradiation may be a strategy to improve viscoelastic dissipation and toughness of photo‐activated adhesive resins.
Mixing Insulating Commodity Polymers with Semiconducting n‐type Polymers Enables High‐Performance Electrochemical Transistors
Authors: Zeglio Erica , Wang Yazhou , Jain Saumey , Lin Yunfan , Avila Ramirez Alan Eduardo , Feng Kui , Guo Xugang , Ose Helena , Mozolevskis Gatis , Mawad Damia , Yue Wan , Hamedi Mahiar Max , Herland Anna 
Published: March 2024

AbstractDiluting organic semiconductors with a host insulating polymer is used to increase the electronic mobility in organic electronic devices, such as thin film transistors, while considerably reducing material costs. In contrast to organic electronics, bioelectronic devices such as the organic electrochemical transistor (OECT) rely on both electronic and ionic mobility for efficient operation, making it challenging to integrate hydrophobic polymers as the predominant blend component. This work shows that diluting the n‐type conjugated polymer p(N‐T) with high molecular weight polystyrene (10 KDa) leads to OECTs with over three times better mobility‐volumetric capacitance product (µC*) with respect to the pristine p(N‐T) (from 4.3 to 13.4 F V−1 cm−1 s−1) while drastically decreasing the amount of conjugated polymer (six times less). This improvement in µC* is due to a dramatic increase in electronic mobility by two orders of magnitude, from 0.059 to 1.3 cm2 V−1 s−1 for p(N‐T):Polystyrene 10 KDa 1:6. Moreover, devices made with this polymer blend show better stability, retaining 77% of the initial drain current after 60 minutes operation in contrast to 12% for pristine p(N‐T). These results open a new generation of low‐cost organic mixed ionic‐electronic conductors where the bulk of the film is made by a commodity polymer.
Application of Multilayered Blend Films as Soft, Stretchable, Self‐Adhesive, and Self‐Healing Absorption‐Dominant EMI Shielding and Microwave Absorber
Authors: Tolvanen Jarkko , Nelo Mikko , Alasmäki Heidi , Pitkänen Olli , Vahera Timo , Hannu Jari , Juuti Jari , Jantunen Heli 
Published: March 2024

AbstractSolution‐processable organic conductor–supramolecular elastomer blends are emerging materials for intrinsically stretchable and autonomously self‐healing organic electronics. Herein, the feasibility of a heterogenous multiphase polymer blend is demonstrated for soft, ultraflexible, self‐adhesive, and self‐healing multilayered film structures for electromagnetic interference (EMI) shielding and microwave absorber (MWA) purposes. The developed soft multilayered films achieve a 5–40 fold improvement in the thickness of the MWA compared to the current state‐of‐the‐art. The thickness normalized reflection loss (RL) is up to 65.26 dB mm−1 with 8.5 GHz bandwidth at 18–26.5 GHz. The maximum thickness normalized EMI shielding effectiveness peaks at up to 175 dB mm−1. The EMI shielding and MWA properties are maintainable up to 150% tensile strain with only a small decrease in the overall attenuation and RL. Furthermore, the developed films are capable of fully autonomously self‐healing and achieve a tough adhesion in temperatures of −30–145 °C, and underwater with maximum single‐lap shear adhesion strength of ≈481.5 kPa to soft thermoplastic polyurethane films. Thus, the developed multilayered films can be utilized for absorption‐dominant EMI shielding or MWA purposes as stretchable coatings. The developed materials also show considerable potential for emerging damage and puncture‐resistant organic soft electronics with autonomous material‐level self‐healing.
Recent Advances in the Synthesis of Conjugated Polymers for Supercapacitors
Authors: Genene Zewdneh , Xia Zhenyuan , Yang Guijun , Mammo Wendimagegn , Wang Ergang 
Published: March 2024

AbstractConjugated polymers have attracted growing attention for versatile applications in energy storage due to their potential benefits including low‐cost processing, molecular tunability, environmental benignity, and high mechanical flexibility. In particular, polymer‐based organic electrode materials have shown significant progress in supercapacitor (SC) applications with superior electrochemical behaviors. The performances of SCs are closely related to the intrinsic characteristics of different polymers in the nanoscale and the morphological features of the polymer‐based electrode materials obtained by different fabrication techniques in the macroscale. This review summarizes the design and synthesis of both p‐type and n‐type conjugated polymers, highlighting the pros and cons of three synthesis techniques: electrochemical polymerization, chemical polymerization, and in situ polymerization. The performances of conjugated polymers in SCs, their cycling stabilities, and structure‐performance relationships are discussed. Moreover, the existing challenges and future directions of polymer‐based SCs are considered with respect to energy density, stability, and large‐scale production to promote commercialization.
Spatiotemporally Mapped Endothelial Dysfunction at Bifurcations in a Coronary Artery‐on‐a‐Chip
Authors: Singh Jasneil , Gambhir Tanya , Goh Tiffany , van Vuuren Isabelle , Gao Lingzi , Wise Steven G. , Waterhouse Anna 
Published: March 2024

AbstractAtherosclerotic plaques are commonly observed at low shear regions, in particular, the left main coronary artery (LMCA) bifurcation. Low shear regions at bifurcations promote endothelial dysfunction, a key factor initiating atherogenesis, however, mechanisms underlying this process are poorly understood. Dynamic in vitro models are critical to investigate endothelial dysfunction, but current static and vessels‐on‐chip systems typically lack physiologically complex geometries and local shear changes. Here, a bifurcating coronary artery‐on‐a‐chip is developed, mimicking the human LMCA, displaying reduced shear near the bifurcation, verified using computational fluid dynamics simulations. Over 7 days of dynamic culture, human coronary artery endothelial cells aligned with the flow and expressed more Endothelial nitric oxide synthase (eNOS) and intercellular cell adheison molecule‐1 (ICAM‐1) at high shear regions (12.7 dyn cm−2) adjacent to, but not at the bifurcation (0–3 dyn cm−2). After tumor necrosis factor‐alpha (TNFα) stimulation to induce endothelial dysfunction, spatially mapping cellular changes and shear gradients revealed cell alignment is disrupted over a larger area surrounding the bifurcation at a higher shear, and ICAM‐1 expression is increased closer to the bifurcation at a lower shear. This coronary artery‐on‐a‐chip establishes a system to spatially map endothelial cell behavior in response to differential shear and vessel geometry, enabling future studies into plaque initiation events, treatment targets, and drug screening.