Article
Physics, Multidisciplinary
Akito Daido, Yuhei Ikeda, Youichi Yanase
Summary: Based on recent experiments, this study proposes an intrinsic mechanism for the superconducting diode effect and investigates the relationship between the asymmetry of the depairing current and temperature/magnetic field, revealing the rich phase diagram and functionalities of noncentrosymmetric superconductors.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Jonghyeok Yun, Hong Rim Shin, Trung Dinh Hoang, Siwon Kim, Jae Hyuk Choi, Beomsu Kim, Hyuck Jung, Janghyuk Moon, Jong-Won Lee
Summary: Recently, halide-type Li+ conductors have gained attention for use in all-solid-state batteries (ASSBs) due to their stability at high potentials. However, the fast performance decay of composite cathodes has hindered the realization of ASSBs. In this study, we reveal the critical degradation factors of halide-SE-based cathodes through a comparative study with sulfide SEs. Our findings demonstrate the different degradation mechanisms and offer insights into the design of materials and electrodes for high-performance ASSBs.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Physical
Niket Suresh Powar, Su-Il In, Mariyappan Shanmugam
Summary: This study examined the structural, optical, nanomorphological, photoresponsive, and electrochemical charge transport characteristics of a chemically assembled 2D-layered Tungsten Selenide (WSe2)-Tungsten Carbide (WC) heterostructure. It was found that 6 wt% of WSe2 in WC showed dominant absorption and fluorescence emission. High-resolution transmission electron microscopy revealed the d-spacing values for WSe2 and WC, and X-ray photoelectron spectroscopy traced the presence of W, Se, and C. Raman spectroscopy confirmed the presence of WSe2 in WC. X-ray diffraction analysis showed changes in crystallite size and lattice deformation in the WSe2-WC heterostructure. The incorporation of WSe2 in WC improved photoresponsive behavior and charge transport.
Article
Multidisciplinary Sciences
Jun Huang, Yanxia Chen, Michael Eikerling
Summary: This paper reveals that the surface-charging behaviors of the electrodes in an electrochemical cell are not independently described by their electric double-layer properties. Instead, they are correlated and determined by the electric double-layer and reaction kinetics of both electrodes. Two fundamental equations are derived to describe the correlated surface-charging behaviors, and approximate analytical solutions are provided for low and high current densities for better understanding. The implications of this conceptual analysis for theoretical and computational electrochemistry are discussed, and a strategy to modulate the activity of one electrode by tuning the electric double-layer parameters of the other electrode in a two-electrode electrochemical cell is demonstrated.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Jianfang Li, Zhaoyang Li, Xiangmei Liu, Changyi Li, Yufeng Zheng, Kelvin Wai Kwok Yeung, Zhenduo Cui, Yanqin Liang, Shengli Zhu, Wenbin Hu, Yajun Qi, Tianjin Zhang, Xianbao Wang, Shuilin Wu
Summary: An interfacial Schottky junction of Bi2S3/Ti3C2Tx has been designed to improve photocatalytic activity by increasing local electron density and inhibiting electron backflow, effectively eradicating Staphylococcus aureus and Escherichia coli.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
J. Cai, E. Griffin, V. H. Guarochico-Moreira, D. Barry, B. Xin, M. Yagmurcukardes, S. Zhang, A. K. Geim, F. M. Peeters, M. Lozada-Hidalgo
Summary: This study observes the strong acceleration of water dissociation reaction in strong electric fields using graphene electrodes, which is in agreement with theoretical predictions. This finding provides valuable insights into interfacial phenomena involving proton transport.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Syed Dildar Haider Naqvi, Kyungnan Son, Wonzee Jung, Hui Ung Hwang, Sangmin Lee, Arheum Lee, Minjong Keum, Sunwook Kim, Jeong Won Kim, Min Gu Kang, Hee-eun Song, Sungjun Hong, Inyoung Jeong, Seungkyu Ahn, Andreas Lambertz, Kaining Ding, Weiyuan Duan, Kanghoon Yim, Sejin Ahn
Summary: Conventional semi-transparent perovskite solar cells generally have lower performance and stability compared to opaque PSCs. This study reveals that lithium ions from a doped hole-transport layer can diffuse into the buffer layer, leading to reduced efficiency and accelerated degradation of semi-transparent PSCs. However, by modifying the surface of the hole-transport layer, this undesired ion diffusion can be avoided, resulting in ST-PSCs with record efficiency and improved stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Min Gye Kim, Jae Seung Shin, Jin Hyun Ma, Jun Hyung Jeong, Dong Hee Han, Beom-Su Kim, Woojin Jeon, Yongsup Park, Seong Jun Kang
Summary: This paper presents the use of an Al-doped TiO2 (ATO) interfacial layer to improve the charge balance in QLEDs, resulting in enhanced luminance and efficiency. The study demonstrates that a better interfacial energy level alignment can be achieved by increasing the number of oxygen vacancies and titanium defect sites. With the optimized ATO interfacial layer, QLEDs exhibit improved luminance, current efficiency, and device lifetime.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Review
Chemistry, Applied
Gopalan Saianand, Prashant Sonar, Gregory J. Wilson, Anantha-Iyengar Gopalan, Vellaisamy A. L. Roy, Gautam E. Unni, Khan Mamun Reza, Behzad Bahrami, K. Venkatramanan, Qiquan Qiao
Summary: Perovskite-based photovoltaic materials have gained attention for their high power conversion efficiency. Flexible hybrid perovskite photovoltaics offer exciting potential for optoelectronic and wearable/portable device applications. The components of flexible perovskite-based solar cells play a crucial role in their overall performance.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Analytical
Fumiaki Amano, Shinichiro Koga
Summary: The study investigates the effect of charge transport at the interface between particulate film electrodes of n-type semiconductor oxides and conductive substrates on photoelectrochemical water splitting. The performance of tungsten oxide particle films on different substrates was evaluated, and it was found that the electrode on a titanium substrate exhibited better performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Ran Attias, Ben Dlugatch, Munseok S. Chae, Yosef Goffer, Doron Aurbach
Summary: The study reveals that the interfacial resistance decreases significantly during dynamic processes of steady magnesium deposition or dissolution, while it is very high at the OCV. Adsorption phenomena have different effects on interfacial charge transfer, leading to high impedance during steady-state deposition due to a larger distance for electron tunneling. During dissolution, the high interfacial impedance measured is likely caused by migration of magnesium ions away from the metal surface. At higher currents, the interfacial resistivity follows Butler-Volmer kinetics without complications from adsorption phenomena.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Electrochemistry
Kevin Scanlan, Arumugam Manthiram
Summary: This study investigates the behavior of electrolytes in high-rate (dis)charge processes and reveals that ion transport in the electrolyte is the main rate-limiting process. The study also elucidates the control mechanism of electrolyte rate performance in LiFePO4 electrodes.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Beibei Jia, Jun Zhou, Jiaxin Chen, Zixuan Zhang, Yang Wang, Zepeng Lv, Kai Wu
Summary: This work investigates the dielectric properties and local dynamic charge mobility behavior at the interface of barium titanate/epoxy resin (BTO/EP) composites from both bulk and local perspectives. The results show that the interface between BTO and epoxy can easily accumulate a negative charge, and nanoscale BTO particles introduce deeper traps than microscale BTO particles to inhibit charge migration. Under the same bias condition, the carriers tend to accumulate near the nanoscale BTO particles rather than the microscale BTO particles. The charge dissipation rate at the interface region in microscale BTO/EP is about one order of magnitude higher than that of nanoscale BTO/EP. This work provides experimental support for understanding the mechanism of charge transport in dielectric composites.
Article
Multidisciplinary Sciences
Zhaowei Zhang, Naizhou Wang, Ning Cao, Aifeng Wang, Xiaoyuan Zhou, Kenji Watanabe, Takashi Taniguchi, Binghai Yan, Wei-bo Gao
Summary: This study reports on the controllable non-reciprocal charge transport in the magnetic topological insulator MnBi2Te4. By observing and manipulating the non-reciprocal response, the fundamental role of chirality in charge transport of this material is revealed, paving the way for the development of van der Waals spintronic devices through chirality engineering.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jihye Park, Jun Hyeong Gu, Myeong Ju Lee, Sun Hwa Park, Junghoon Jahng, Donghwa Lee, Young-Gi Lee, Hosun Shin, Jung-Yong Lee, Jae Yong Song
Summary: Organic electrodes are potential candidates for future rechargeable lithium-ion batteries (LIBs) due to their natural abundance and lightweight. However, they suffer from low electrochemical capacity, low capacity retention, and elution of active electrode materials. In this study, the researchers developed a field-induced charge-transfer route and nanostructuring to improve the electrochemical performance of organic electrodes.
ENERGY STORAGE MATERIALS
(2023)
Article
Medicine, Research & Experimental
Lei Liu, Hang Qu, Jun Jian Li, Yan Wei Yang, Qiu Xi Zeng, Yan Wen Gong, Zhong Zhi He, Yi He Zhang, Wei Zhang, Bin Liu, Li Chun Che
Summary: The study showed that methylprednisolone therapy effectively prevents high-risk common type COVID-19 pneumonia patients from progressing to severe stage, with better clinical outcomes compared to standard treatment.
CLINICAL AND EXPERIMENTAL MEDICINE
(2022)
Article
Chemistry, Multidisciplinary
Junming Zhang, Jun Ma, Tej S. Choksi, Daojin Zhou, Shaobo Han, Yen-Fa Liao, Hong Bin Yang, Dong Liu, Zhiping Zeng, Wei Liu, Xiaoming Sun, Tianyu Zhang, Bin Liu
Summary: Noble metals play a crucial role in electrochemical reactions, but their usage is limited due to high overpotential and poor stability. By modulating strong metal-support interaction (SMSI) through mechanical milling, the overall performance of Pd electrocatalysts has been improved in terms of activity, selectivity, and stability. This approach can also be extended to other noble metal systems, showing great promise for the large-scale production of highly stable and tunable electrocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Zhijian Wang, Bingbao Mei, Jiazang Chen
Summary: Bridging the semiconductor-cocatalyst contact with metals of appropriate work function significantly reduces the barrier for interfacial electron transfer, leading to an unprecedented hydrogen evolution rate in the demonstrated photocatalyst.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Yang Xu, Zhijian Wang, Houkui Xiang, Danlu Yang, Junwei Wang, Jiazang Chen
Summary: Developing cocatalyst-free photocatalysts is important for overcoming the slow interfacial electron transfer in photocatalytic photon utilization. We demonstrate that electronic doping can provide catalytically active sites and additional roles in cocatalyst-free photocatalysts. Tungsten-doped CdS shows superior photocatalytic performance compared to conventional counterparts loaded with platinum cocatalysts.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Zijian Yuan, Lu Liu, Wei Ru, Daojin Zhou, Yun Kuang, Junting Feng, Bin Liu, Xiaoming Sun
Summary: In this study, hierarchical spinel monolithic catalysts with a porous woodpile architecture were fabricated by injecting intercalated layered double hydroxide and subsequent low temperature calcination. The catalyst exhibited excellent catalytic performance in semi-hydrogenation of acetylene due to its rapid mass/heat transfer and highly dispersed active sites.
Article
Chemistry, Physical
Xuhui Wei, Haifeng Liu, Shugong Gao, Kun Jia, Zhijian Wang, Jiazang Chen
Summary: Photocatalytic fixed bed reactors have the advantages of straightforward separation and simplified installation and operation. This study demonstrates that by modulating the electronic process and mass transport, photocatalytic fixed bed reactors can achieve a superior reaction rate compared to slurry suspension. The research also shows that mass transport occurring on a decisecond time scale does not significantly slow down the reaction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Jiajian Gao, Yan Liu, Bin Liu, Kuo-Wei Huang
Summary: This review provides an overview of the importance and recent progress of iridium catalysts for acidic OER. It includes the introduction of surface and bulk Pourbaix diagrams of iridium species, elaboration on different types of iridium-based catalysts, and summary of research on reaction intermediates and kinetics.
Article
Engineering, Chemical
Xuhui Wei, Houkui Xiang, Yang Xu, Zhijian Wang, Jiazang Chen
Summary: Due to high potential barrier and trap-assisted charge recombination, the relationship between the photocatalytic reaction rate and the dosage of photocatalyst or the light intensity deviates significantly from linearity. A model is developed that shows a positive correlation between the reaction rate and photocatalyst concentration under weak illumination, while the correlation becomes negative under intense irradiation. The theoretical simulation can guide the maximization of photocatalytic photon utilization under different intensities of irradiation. To efficiently utilize real-time changing sunlight, a reactor configuration is proposed to optimize the amount of photocatalyst participating in the reaction.
Article
Engineering, Environmental
Wenrui Wan, Qiaolan Zhang, Yan Wei, Youzhi Cao, Jiaxiu Hou, Chunyan Liu, Lin Hong, Hong Gao, Jiazang Chen, Huanwang Jing
Summary: Researchers designed and fabricated p-n heterojunction nanowires Si@WO3-x for photoelectrocatalytic reduction of CO2. Si@WO3NS heterojunction showed the highest apparent quantum efficiency (0.49% AQE) and selectivity of multicarbon products (C2+). This material simulated the structure of plants and can produce C2+ chemicals without the assistance of copper particles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Youzhi Cao, Yan Wei, Wenrui Wan, Chunyan Liu, Changwan Zhuang, Can Gong, Linhong Nan, Qiaolan Zhang, Hong Gao, Jiazang Chen, Huanwang Jing
Summary: The photoelectrochemical reduction of CO2 into organic chemicals on a semiconductor is a feasible solution to the global energy crisis and climate warming. In this study, NiMoO4/ZnO-x heterojunctions were designed and synthesized. The nanosheets of NiMoO4 have high photon absorption and promote the coupling of C-C to generate C2 compounds. The ZnO/C core, fabricated from MOF rich in CN species, generates thermal electrons to assist CO2 reduction.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Haifeng Liu, Xuhui Wei, Yao Fang, Jiazang Chen
Summary: A photoinduced radical reaction at low temperature effectively removes trace CO from a H2 stream, reducing the reverse water-gas shift. However, nonselective oxidation by hydroxyl radicals leads to H2 consumption hindering practical hydrogen purification. Inspired by hydrogen exchange transfer, molecular hydrogen is found to promote H2 formation from hydrogen radicals generated by the reaction of CO and H2 with hydroxyl radicals. This finding encouraged the design of a photocatalytic hydrogen purification fixed-bed reactor that can reduce CO to <1 ppm in the H2 stream.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Bingkun Huang, Xinyi Ren, Jian Zhao, Zelin Wu, Xinhao Wang, Xinyu Song, Xuning Li, Bin Liu, Zhaokun Xiong, Bo Lai
Summary: This study reports the functional group modification of model single atom catalysts (SACs) to improve the catalytic performance in Fenton-like reactions. The modified cobalt phthalocyanine catalyst exhibited superior catalytic activity and the mechanism was revealed through density functional theory (DFT) calculations. Scale-up experiments also demonstrated the stability and efficiency of the catalyst.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yinyin Wang, Jiankang Zhao, Cong Cao, Jie Ding, Ruyang Wang, Jie Zeng, Jun Bao, Bin Liu
Summary: Electrosynthesis of valuable chemicals from CO2 or CO offers a promising approach to store renewable electricity and reduce carbon emission. In this study, amino functionalized Cu surface (Cu@NH2) derived from in situ electroreduction of copper ammonia chloride complexes exhibits significant catalytic performance for CO reduction to acetate. The amino groups on the Cu surface play a crucial role in maintaining the low valence state of Cu and stabilizing the oxygen-containing intermediates, thus promoting the coupling reaction between *CO and *CHO to form acetate.
Article
Chemistry, Physical
Shugong Gao, Tingyun Ge, Bo Li, Jiazang Chen
Summary: The strategy of electronic doping can enhance electrostatic interaction to aggregate contaminants and induce the hydrolysis of hydrated cations, synergistically facilitating photocatalytic mineralization.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ran Chen, Juan Chen, Huinan Che, Gang Zhou, Yanhui Ao, Bin Liu
Summary: In this study, atomically dispersed main group magnesium (Mg) was introduced onto CdS monodispersed nanospheres, greatly enhancing the photocatalytic hydrogen evolution reaction. The atomically dispersed Mg acts as an electron sink, trapping photogenerated electrons and reducing the Gibbs free energy of hydrogen evolution reaction (HER), leading to accelerated HER and improved efficiency.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2022)