Article
Chemistry, Physical
Xia Liu, Guancheng Xu, Hui Ding, Li Zhang, Tingting Huang
Summary: In this study, high activity and prolonged stability bifunctional electrocatalysts were successfully prepared by optimizing components and constructing self-supporting electrodes. Uniformly proportioned NiCoP nanoparticles were embedded in self-supporting coal-based carbon nanofibers using electrospinning and pyrolysis processes with the help of phytic acid and oxidized coal. The resulting self-supporting NiCoP@C-CNFs-2 exhibited good bifunctional electrocatalytic activity and stability, making it suitable for alkaline electrolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Tingting Huang, Guancheng Xu, Hui Ding, Li Zhang, Bei Wei, Xia Liu
Summary: In this study, a composite of cobalt molybdenum phosphide nanoparticles embedded in crosslinked nitrogen-doped carbon nanofiber was successfully synthesized, which exhibited excellent performance and stability as a catalyst in water splitting. This research provides a promising method for preparing carbon-based TMPs materials towards electrocatalysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Electrochemistry
Taiwo Oladapo Ogundipe, Lisha Shen, Yan Shi, Zhuoxin Lu, Zhida Wang, Hongyi Tan, Changfeng Yan
Summary: This study presents a facile synthesis strategy for preparing self-supported nickel-cobalt phosphides using terephthalic acid as metal-organic framework precursor. The incorporation of MOF precursors improved the performance of the bimetallic transition metal phosphides, making them efficient electrocatalysts for overall water splitting.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Libo Wu, Luo Yu, Fanghao Zhang, Brian McElhenny, Dan Luo, Alamgir Karim, Shuo Chen, Zhifeng Ren
Summary: The study successfully synthesized a heterogeneous Ni2P-Fe2P microsheet electrocatalyst with superior catalytic activity and corrosion resistance, suitable for water and seawater electrolysis, demonstrating great potential. The catalyst has abundant active sites and a superior transfer coefficient, exhibiting performance even better than the currently reported best bifunctional catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xiaodan Wang, Chao Wang, Fengyu Lai, Hongxia Sun, Nan Yu, Baoyou Geng
Summary: Constructing a bimetallic phosphide nanocomposite structure can enhance active sites and accelerate electron transfer, benefiting electrocatalysis for overall water splitting.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Xueping Sun, Peng Wei, Zhimin He, Fangyuan Cheng, Lin Tang, Jiantao Han, Jianhua He
Summary: Developing highly efficient and stable bifunctional electrocatalysts is crucial for water splitting reaction. In this study, a universal and scalable synthetic strategy was proposed to prepare nanosized transition metal phosphide encapsulated in nitrogen-phosphorus co-doped carbon (TMP@NPC) catalysts using green and inexpensive adenosine triphosphate (ATP) as a new phosphorus source. The as-prepared TMP@NPC catalysts exhibited excellent hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities with small overpotentials and robust capabilities. The CoP@NPC catalyst showed the lowest overpotentials and outstanding stability, and demonstrated excellent performance in overall water splitting as both cathode and anode. This work highlights the importance of green and general synthesis strategy in designing and constructing TMPs and reinforces the understanding of intimate interaction in coupled hybrid electrocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Changhao Zhao, Fen Wei, Haolin Lv, Dengke Zhao, Nan Wang, Ligui Li, Nanwen Li, Xiufang Wang
Summary: The Fe(III) ion-assisted aniline polymerization strategy was used to embed bimetallic CoFeP nanospheres into a nitrogen-doped porous carbon framework to prepare CoFeP-NC with excellent catalytic performance for hydrogen evolution reaction. The CoFeP-NC shows low overpotentials for both HER and OER in acidic and alkaline media, demonstrating great potential for overall water splitting applications.
Article
Energy & Fuels
Yiqing Zhang, Junhui Liang, Gan Luo, Xin Yao, Xiang Ding, Wei Wei, Huayu Chen, Laishun Qin, Yuexiang Huang, Da Chen
Summary: Utilizing solar-cell-assisted water splitting to produce clean hydrogen energy and address the energy crisis is a promising strategy. However, the efficiency of solar to hydrogen (STH) is limited by the slow reaction kinetics of the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). This study develops a covalent doping approach by growing amorphous Ni-Fe phosphide on WS2 nanosheets, which modifies the electronic structure and reduces the overpotentials for OER and HER by 7% and 15%, respectively. Moreover, the bifunctional electrocatalyst, Ni-Fe phosphide @ WS2, can operate at a low voltage with a high current density, achieving a substantial STH efficiency of 8.49% when coupled with a triple-junction solar cell.
Article
Chemistry, Multidisciplinary
Mei-Jun Liu, Fu-Hao Yang, Ji-Cheng Mei, Xu Guo, Hua-Yang Wang, Meng-Yao He, Yu-Ang Yao, Hai-Feng Zhang, Cheng-Bin Liu
Summary: In this study, a novel nanostructure consisting of vertically oriented CoP hierarchical nanosheet arrays with in situ-assembled carbon skeletons on a Ti foil electrode was reported. The obtained bifunctional hybrid exhibited low overpotential and small Tafel slope for both hydrogen evolution and oxygen evolution reactions. The assembled C@CoP||C@CoP electrolyzer showed excellent overall water splitting performance at a high current density and superior durability.
Article
Electrochemistry
Hongchen Liu, Fan Yang, Zhusong Xu, Xingru Yan, Fengjiang Chen, Chong Xu, Sai Che, Yongfeng Li
Summary: In this study, a phosphorous doped cobalt-copper aerogel with a three-dimensional interconnected structure was prepared. The alloying and doping processes modulated the electronic structure and charge density of the catalyst, resulting in improved charge transfer efficiency and proton adsorption energy. The porous morphology of the aerogel provided efficient mass transfer and abundant active sites. The optimized catalyst exhibited extremely low overpotentials and decent stability, showing great potential for overall water splitting applications.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zehao Xiao, Jie Wang, Canhui Liu, Bowen Wang, Qiang Zhang, Zonglin Xu, Muhammad Tariq Sarwar, Aidong Tang, Huaming Yang
Summary: In this study, NiMoO4-based catalysts with excellent oxygen and hydrogen evolution reaction performance were successfully constructed by modifying the reaction conditions. The reconstructed NiOOH/NiMoO4 exhibited outstanding performance in oxygen evolution reaction. The reconstructed amorphous-hydroxyls/CoPx/P-NiMoOx catalyst showed highly efficient catalytic activity in hydrogen evolution reaction. The integrated water splitting system had low energy requirements and excellent stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiangyu Zhang, Hong Li, Yanhui Li, Xianhui Wang, Hongbin Wang, Wenrong Yang, Jingquan Liu, Da Li
Summary: To replace expensive precious metal catalysts for water electrolysis, it is important to develop inexpensive and powerful bifunctional catalysts. In this study, a hierarchical structure Fe-Co3S4/MoS2 catalyst was synthesized and showed excellent catalytic performance and stability for overall water splitting. The Fe doping and component modulation contributed to the high intrinsic activity and excellent transfer coefficients of the catalyst.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiangyu Zhang, Hong Li, Yanhui Li, Xianhui Wang, Hongbin Wang, Wenrong Yang, Jingquan Liu, Da Li
Summary: To replace expensive precious metal catalysts, it is important to develop inexpensive and powerful bifunctional catalysts for hydrogen production. In this study, a hierarchical structure Fe-Co3S4/MoS2 catalyst was synthesized using excellent templates and elemental doping, demonstrating excellent catalytic performance and long-term stability for overall water splitting.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Muthuraja Velpandian, Amrutha Ragunathan, Govind Ummethala, Sai Rama Krishna Malladi, Praveen Meduri
Summary: This study focuses on the design and development of cobalt telluride (CoTe2)-tungstentelluride (WTe2) nanostructures with high porosity and specific surface area to enhance electrochemical water splitting. The synergistic effects of Co and W atoms in the nanostructures improve electron transfer and provide optimal binding energy for reaction intermediates. The CoTe2-WTe2 nanostructures exhibit low overpotential for oxygen and hydrogen evolution reactions in alkaline solution, and a two-electrode cell using these nanostructures as both anode and cathode shows low cell potential and good stability.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Bin Chen, Dokyoung Kim, Zhuo Zhang, Minseok Lee, Kijung Yong
Summary: A novel bifunctional electrocatalyst consisting of multiple transition metal phosphide nanoclusters and N-doped carbon nanosheets derived from metal-organic frameworks has been successfully synthesized for overall water splitting, showing high HER and OER activities along with excellent stability.
CHEMICAL ENGINEERING JOURNAL
(2021)