Article
Electrochemistry
Gh. Barati Darband, N. Lotfi, A. Aliabadi, Suyeon Hyun, Sangaraju Shanmugam
Summary: The development of a new Ni-Cu-P@Ni-Cu bifunctional electrode for hydrogen evolution reaction (HER) and hydrazine oxidation reaction (HzOR) with excellent electrocatalytic activity and high efficiency has been achieved. The electrode was fabricated using a simple electrodeposition method, demonstrating successful generation of efficient hydrogen in water splitting processes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Jingfei Kang, Can Sheng, Jiayi Wang, Han Xu, Bin Zhao, Sha Chen, Yan Qing, Yiqiang Wu
Summary: Defect and interface engineering are efficient methods for altering the electrical structure and improving electrocatalyst activity. In this study, a rational design architecture of Ni2P nanoparticles embedded in P-doped carbonized wood fibers (Ni2P/PCWF) is synthesized. The synergy of electronic structure manipulation and interface regulation in Ni2P/PCWF enhances the urea oxidation reaction (UOR). The optimized electronic structure, aided charge transport process, and accelerated electron transfer result in remarkable electrocatalytic properties for UOR.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Yanmin Hu, Tingting Chao, Yapeng Li, Peigen Liu, Tonghui Zhao, Ge Yu, Cai Chen, Xiao Liang, Huile Jin, Shuwen Niu, Wei Chen, Dingsheng Wang, Yadong Li
Summary: In this study, a twisted NiCoP nanowire array immobilized with Ru single atoms (Ru-1-NiCoP) is reported as a superior bifunctional electrocatalyst for HzOR and HER. The electrolyzer based on overall hydrazine splitting (OHzS) exhibits outstanding activity with a record-high current density of 522 mA cm(-2) at a cell voltage of 0.3 V. The study provides a new pathway for H-2 production by replacing the oxygen evolution reaction with the hydrazine oxidation reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Ho Tae Bang, Kyeong-Rim Yeo, Kyung Ji Choi, Won Suk Jung, Soo-Kil Kim
Summary: Proton-exchange membrane water electrolyzers require non-precious catalysts that are active and stable. This study fabricates Ni-Mo-P ternary alloy catalysts with a wide composition range and evaluates their activity and stability. The results show that the NiMoP catalyst with the optimal composition exhibits superior performance in both half and single cells, and the addition of corrosion-resistant P improves the catalyst stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Chunli Song, Qing Zhan, Fei Liu, Chuan Wang, Hongchao Li, Xuan Wang, Xuefeng Guo, Yingchun Cheng, Wei Sun, Li Wang, Jieshu Qian, Bingcai Pan
Summary: This research reports a method for fabricating Co3O4-CeO2 nanocomposites by changing the loading direction, and discovers that they exhibit unexpectedly high activity and stability in peroxymonosulfate-based Fenton-like reactions. The generated oxygen vacancies serve as new active sites to facilitate the cleavage of peroxide bond, resulting in improved catalytic activity. This provides a new direction for enhancing the catalytic activity of nanocomposite catalysts in various scenarios, including environmental remediation and energy applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Applied
Seunghyun Jo, JunHwa Kwon, Ki-Yeop Cho, Dong Hyeon Kim, KwangSup Eom
Summary: The predeposited Co-Ni layer enhances the catalytic activity and long-term durability of the quaternary Co-Ni-P-B catalyst for the hydrogen evolution reaction. This is due to the porous morphology of the Co-Ni-P-B/Co-Ni/Cu catalyst which leads to a larger electrochemical surface area and higher atomic ratio of P and B contents compared to Co-Ni-P-B/Cu. Additionally, the Co-Ni-P-B/Co-Ni/Cu catalyst shows higher retention of catalytic activity during durability testing compared to Co-Ni-P-B/Cu catalyst.
Article
Chemistry, Multidisciplinary
Yan-Ru Fan, Jin-Qi Li, Yu-Xi Yang, Zhi-Hao Zhang, Jie Zhang, Jing-He Yang
Summary: Phosphorus-doped nickel plating on carbon fibers (Ni-P/CF) demonstrates excellent urea electrooxidation performance and durability, with the potential for large-scale industrial production.
FRONTIERS IN CHEMISTRY
(2023)
Article
Chemistry, Physical
Eduardo Jaimes-Romano, Hugo Valdes, Simon Hernandez-Ortega, Rosa Mollfulleda, Marcel Swart, David Morales-Morales
Summary: The catalytic activities of three Ni(II) complexes with fluorinated and non-fluorinated N-heterocyclic carbene (NHC) ligands were evaluated in the C-S cross-coupling reaction. The complexes with fluorinated-NHC ligands exhibited lower catalytic activities compared to the non-fluorinated derivative, attributed to the lower electron-donating character of the fluorinated ligands. Different substrates were tested using complex 3-Ni, achieving varying conversions due to differences in the stability of the intermediates formed.
JOURNAL OF CATALYSIS
(2023)
Article
Energy & Fuels
Huihua Wang, Wenchang Li, Jinhong Wu, Deyong Wang, Dong Hou, Minqi Sheng, Ruiqi Guo
Summary: This study presents an innovative strategy to construct interface-modified Ni-Fe-P/Co-P/NF alloys for water splitting, which exhibit excellent electrocatalytic performance and durability. The strategy can be readily extended to other binary and ternary electrocatalysts, promoting the development of water splitting technology.
Article
Chemistry, Inorganic & Nuclear
Si-Jia Guan, Peng Zhang, Shen-Jing Ji, Yu Cao, Nian-Tzu Suen
Summary: The presence of iron impurities in nickel-based electrocatalysts affects the oxygen evolution reaction (OER). Internal iron is found to facilitate phase transformation and improve OER performance.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Junya Ohyama, Hideto Ushijima, Takashi Yamashita, Akihiro Yamashita, Hiroshi Yoshida, Masato Machida
Summary: Improving the catalysts for hydrogen oxidation reaction (HOR) in alkaline conditions is crucial for the development of anion exchange membrane fuel cells. Previous studies have shown that Pt catalysts can be enhanced by forming coordinationally saturated surface sites and also by combining Pt with other metals. This study demonstrates the use of Pt-Ni alloy thin films as highly active structures in alkaline HOR, with improved activity compared to Pt monometal thin-film and nanoparticle catalysts.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Chemical
Zimeng Wei, Wenbin Sun, Shanshan Liu, Jindi Qi, Luyao Kang, Jiechen Li, Shanshan Lou, Junfeng Xie, Bo Tang, Yi Xie
Summary: The study developed an efficient lanthanum-doped alpha-Ni(OH)(2) bifunctional catalyst with a 1D-2D-3D hierarchical nanostructure, showing superior activity and stability in the anodic oxygen evolution reaction and urea oxidation reaction. The catalyst demonstrated promising performance in simultaneous alkaline wastewater treatment and hydrogen production, making it a potential candidate for industrial applications.
Article
Chemistry, Physical
Fei Wang, Xiaoxian Sun, Yi Wang, Huawei Zhou, Jie Yin, Xianxi Zhang
Summary: Surface treatment method significantly affects the structure and properties of materials used for interface catalysis. Utilizing oxidation-corrosion equilibrium (OCE) in acid solution, Ni(OH)2•NiO/FeOOH catalyst was prepared, showing superior catalytic activity for water oxidation and good stability. The metallic properties of the catalyst enhance the efficiency of water splitting by promoting rapid interface electron exchange.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Wei Chen, Yanyong Wang, Binbin Wu, Jianqiao Shi, Yingying Li, Leitao Xu, Chao Xie, Wang Zhou, Yu-Cheng Huang, Tehua Wang, Shiqian Du, Minglei Song, Dongdong Wang, Chen Chen, Jianyun Zheng, Jilei Liu, Chung-Li Dong, Yuqin Zou, Jun Chen, Shuangyin Wang
Summary: This study reported a novel material Ni3Fe LDH-Pt NS, which activates Ni-OH bonds through the synergistic effect of its internal structure and multiple defects, exhibiting excellent performance in nucleophile oxidation reaction (NOR).
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Sakshi Kansal, Paulomi Singh, Sudipta Biswas, Ananya Chowdhury, Debabrata Mandal, Surbhi Priya, Trilok Singh, Amreesh Chandra
Summary: Ni-Co layered double-hydroxides (LDHs) with their lamellar morphology and higher number of active sites show efficient charge transfer, making them highly useful for catalytic applications. A bimetallic LDH catalyst is reported for efficient hydrogenation of p-nitrophenol, a common toxic and carcinogenic pollutant in industrial wastewater. The catalyst demonstrates high performance and a facile synthesis protocol. The catalytic performance at higher temperatures is discussed, and the advantage of Ni-Co LDH as an electrocatalyst for the hydrogen evolution reaction (HER) is explored, indicating potential large-scale industrial use.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jin Zhang, Sian Chen, Huijuan Bai, Shanfu Lu, Yan Xiang, San Ping Jiang
Summary: The study presents a new composite membrane based on PWA-doped PES-PVP matrix, showing improved mechanical strength and proton conductivity for HT-PEMFCs, with potential applications in high temperature polymer electrolyte membrane fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Qinghao Wu, Dawei Liang, Shanfu Lu, Jin Zhang, Haining Wang, Yan Xiang, Doron Aurbach
Summary: The study demonstrates a simple and cost-effective method for fabricating high-CE electrodes for desalination through applying a thin layer of inorganic ion-exchange material on activated carbon electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Multidisciplinary
Wen Li, Haining Wang, Jin Zhang, Yan Xiang, Shanfu Lu
Summary: This review focuses on the application status of polyvinylpyrrolidone-based PEMs in various electrochemical energy conversion and storage devices, describing the key scientific problems in these fields and providing constructive suggestions and guidance for their application.
Article
Chemistry, Physical
Wenrui Yan, Jin Zhang, Shanfu Lu, San Ping Jiang, Yan Xiang
Summary: In high-temperature formic acid fuel cells, the dehydrogenation behavior of formic acid is crucial for boosting cell output performance. The concentration of formic acid affects the amount of hydrogen produced, while reducing water vapor content may promote dehydration and inhibit dehydrogenation. Dehydration leads to the release of carbon monoxide, but it does not significantly affect the power output of the fuel cell.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Zhengjian Li, Sian Chen, Liting Cui, Haining Wang, Shanfu Lu, Yan Xiang
Summary: This study investigates the influence of water diffusivity on the water distribution and performance of a bipolar membrane fuel cell (BPMFC), revealing a positive correlation relationship between water diffusivity and water distribution as well as BPMFC performance. Increasing the water diffusivity of the alkaline polymer electrolytes can enhance the amount of interfacial-generated water and improve the conductivity and oxygen reduction reaction kinetics of the cell, resulting in a breakthrough in peak power density without humidification.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Wen Li, Wen Liu, Jin Zhang, Haining Wang, Shanfu Lu, Yan Xiang
Summary: This study reports a porous polybenzimidazole membrane with dense double skin layers that effectively alleviates hydrogen permeation and phosphoric acid loss, resulting in enhanced stability. The membrane exhibits excellent proton conductivity and fuel cell performance due to the synergistic mass transfer of amino tris (methylene phosphonic acid) and phosphoric acid. Furthermore, the membrane operates in a wider temperature range.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jujia Zhang, Sian Chen, Haibing Wei, Jin Zhang, Haining Wang, Shanfu Lu, Yan Xiang
Summary: To address the stress loss and plasticization issues in polymer electrolyte membranes during startup/shutdown stages, a proton conductor confinement strategy is introduced. By precisely regulating polymer side-chain structure and defined plasticization quantitative indicator, significant refinements in membrane's conductivity, durability, and single-cell performance are achieved successfully.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Chunxiao Wu, Shanfu Lu, Haining Wang, Sian Chen, Yan Xiang
Summary: Constructing proton-exchange membranes using g-C3N4 nanosheets improves the ionic conductivity and selectivity of advanced vanadium redox flow batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Yiyang Liu, Jiao Xu, Shanfu Lu, Yan Xiang
Summary: Iron-chromium redox flow batteries have attracted attention due to their low cost, but their performance is lower than that of vanadium redox flow batteries. In this study, a binder-free TiN nanorods array-decorated 3D graphite felt composite electrode is demonstrated. The electrode has increased surface area, more adsorption sites, and electrochemically active sites, resulting in reduced contact resistance and improved stability. The battery prepared using this electrode showed higher power density and efficiency compared to one with TiN nanoparticles bonded to graphite felt, and remained stable during a redox flow battery cycle test.
Article
Engineering, Chemical
Wen Liu, Sian Chen, Wen Li, Xinrui Liu, Jiashuo Fu, Jin Zhang, Haining Wang, Shanfu Lu, Yan Xiang
Summary: Organophosphorus acid (OPA) and phosphoric acid (PA) co-doped into proton exchange membrane can simultaneously improve proton conductivity and inhibit PA leaching in high temperature proton exchange membrane fuel cells (HT-PEMFCs). The interactions of these dual proton conductors with polymers remain unknown. Density functional theory (DFT) calculations and molecular dynamic (MD) simulations were used to investigate the interactions between amino tris (methylene phosphonic acid) (ATMP)/PA and polybenzimidazoles with different electron withdrawing groups. The study shows that strong electron-withdrawing groups can form more abundant hydrogen bond networks, and the interactions of ATMP and PA with polybenzimidazoles lead to more free PA molecules, benefiting proton conductivity. Additionally, ATMP can reduce self-diffusion of PA, thereby improving the PA retention capacity. This work provides insights for the design of high temperature proton exchange membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Qingxin Wang, Xinrui Liu, Siying Tao, Haining Wang, Shanfu Lu, Yan Xiang, Jing Zhang
Summary: This study uses machine learning techniques and microscopic characterization to analyze the performance trends and influencing factors of batch-synthesized Fe-N-C catalysts under microwave-assisted preparation conditions. Machine learning analysis reveals that the precursor mass has the most significant influence on product performance, and microscopic characterization uncovers that these influencing factors impact catalyst performance by modulating the degree of agglomeration.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Wei Hong, Xinxin Jiang, Chenguang An, Haibao Huang, Tianle Zhu, Ye Sun, Haining Wang, Fangxia Shen, Xiang Li
Summary: This study demonstrates the importance of crystal facet engineering for boosting the activity of catalysts in the ozonation of volatile organic compounds (VOCs). The researchers successfully prepared and utilized facet-engineered monoclinic NiO catalysts for the catalytic ozonation of toluene. The results showed that the monoclinic NiO catalyst with a dominant (111) facet exhibited excellent performance, achieving a toluene conversion of approximately 100% at 30℃.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lu Zhou, Yunqi Li, Xiran Chen, Zhi Yang, Shuo Yang, Qian Wang, Xin-Ying Liu, Shanfu Lu
Summary: Fe-N-C catalysts can replace expensive and scarce platinum-based catalysts in proton exchange membrane fuel cells, and they exhibit better performance stability. The proton resistance increase in MEAs is identified as the primary cause of performance degradation, while changes in the structure and morphology of the cathode catalyst layer are not the main reasons.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Yiyang Liu, Ting Feng, Shanfu Lu, Haining Wang, Yan Xiang
Summary: Phosphotungstic acid demonstrates high stability, electrochemical activity, and low permeability as a liquid fuel for DLFCs. Its application effectively addresses the issues of high cost of anode catalysts and fuel permeation loss in traditional DLFCs.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
