Journal ArticleDOI
Optimized hierarchical nickel sulfide as a highly active bifunctional catalyst for overall water splitting.
Yun Tong,Pengzuo Chen +1 more
TLDR
In this paper, the hierarchical structure of Ni3S2 can be well regulated for optimizing the HER catalytic activity, and a highly efficient water electrolyzer based on Ni 3S2-based materials was proposed.Abstract:
Rational design of non-noble metal electrocatalysts with high intrinsic activity for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is extremely impressive for sustainable electrocatalytic water splitting systems. However, it still remains a major challenge to engineer bifunctional performance. Here, we put forward a highly efficient water electrolyzer based on Ni3S2-based materials. The hierarchical structure of Ni3S2 can be well regulated for optimizing the HER catalytic activity. The best c-Ni3S2/NF electrode exhibits a much smaller overpotential of 220 mV to reach the current density of 100 mA cm−2. Upon introducing Fe species onto the Ni3S2/NF electrode by a simple dipping/drying method, the intrinsic OER activity can be extremely improved. As a result, the Fe-c-Ni3S2/NF catalyst showed excellent catalytic activity for the OER, including an overpotential of 193 mV at 10 mA cm−2, high specific current density and excellent stability. Post-characterization studies proved that the remaining S anions have an effective influence on improving the OER intrinsic activity. The assembled water electrolyzer also presented superior performance, such as a very low cell voltage of 1.50 V at 10 mA cm−2 and excellent durability for 120 h in alkaline medium. This strategy provides a promising way to design highly active and low-cost materials for overall water electrolysis.read more
Citations
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Journal ArticleDOI
Cobalt Telluride: A Highly Efficient Trifunctional Electrocatalyst for Water Splitting and Oxygen Reduction
Manashi Nath,Umanga De Silva,Harish Singh,Matthew Perkins,Wipula P. R. Liyanage,Siddesh Umapathi,Shatadru Chakravarty,Jahangir Masud +7 more
Journal ArticleDOI
Hierarchical Metal Sulfides Heterostructure as Superior Bifunctional Electrode for Overall Water Splitting.
Kaixun Li,Dongmei Feng,Yun Tong +2 more
TL;DR: In this article , a hierarchical nanowire array of metal sulfides heterostructure on nickel foam (FeCoNiS x /NF) was designed as a novel type of hybrid electrocatalyst for overall water splitting.
Journal ArticleDOI
Dual Modification Strategy of Nickel Sulfide as pH-Universal Catalysts for Hydrogen Production at Large Current Density
Journal ArticleDOI
Engineering Sulfur Vacancies in Spinel-Phase Co3S4 for Effective Electrocatalysis of the Oxygen Evolution Reaction
TL;DR: In this article , a hollow dodecahedron constructed by vacancy-rich spinel Co3S4 nanoparticles in a self-generated H2S atmosphere of thiourea was proposed to prepare an efficient oxygen evolution reaction.
Journal ArticleDOI
Amorphous-crystalline FeNi2S4@NiFe-LDH nanograsses by molten salt as an industrially promising electrocatalyst for oxygen evolution
Fu-Li Wang,Xiu Zhang,Jian Zhou,Zhu Shi,Bin Dong,Jingru Xie,Yi-Wen Dong,Jianfeng Yu,Yong-Ming Chai +8 more
TL;DR: In this paper , the FeNi2S4@NiFe-LDH heterostructure is constructed by molten graphite in a NiFe-based oxygen evolution reaction (OER) electrocatalyst.
References
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Journal ArticleDOI
Ultrathin metal–organic framework nanosheets for electrocatalytic oxygen evolution
Shenlong Zhao,Shenlong Zhao,Yun Wang,Juncai Dong,Chun-Ting He,Huajie Yin,Huajie Yin,Pengfei An,Kun Zhao,Xiaofei Zhang,Chao Gao,Lijuan Zhang,Lijuan Zhang,Jiawei Lv,Jinxin Wang,Jinxin Wang,Jianqi Zhang,Abdul Muqsit Khattak,Niaz Ali Khan,Zhixiang Wei,Jing Zhang,Shaoqin Liu,Huijun Zhao,Zhiyong Tang +23 more
TL;DR: In this paper, the authors reported ultrathin metal-organic frameworks (MOFs) as promising electrocatalysts for the oxygen evolution reaction (OER) in alkaline conditions.
Journal ArticleDOI
Homogeneously dispersed, multimetal oxygen-evolving catalysts
Bo Zhang,Bo Zhang,Xueli Zheng,Xueli Zheng,Oleksandr Voznyy,Riccardo Comin,Michal Bajdich,Michal Bajdich,Max García-Melchor,Max García-Melchor,Lili Han,Lili Han,Jixian Xu,Min Liu,Lirong Zheng,F. Pelayo García de Arquer,Cao-Thang Dinh,Fengjia Fan,Mingjian Yuan,Emre Yassitepe,Ning Chen,Tom Regier,Peng Fei Liu,Yu Hang Li,Phil De Luna,Alyf Janmohamed,Huolin L. Xin,Hua Gui Yang,Aleksandra Vojvodic,Aleksandra Vojvodic,Edward H. Sargent +30 more
TL;DR: A room-temperature synthesis to produce gelled oxyhydroxides materials with an atomically homogeneous metal distribution that exhibit the lowest overpotential reported at 10 milliamperes per square centimeter in alkaline electrolyte and shows no evidence of degradation after more than 500 hours of operation.
Journal ArticleDOI
High-index faceted Ni3S2 nanosheet arrays as highly active and ultrastable electrocatalysts for water splitting.
Liang Liang Feng,Guangtao Yu,Yuanyuan Wu,Guo Dong Li,Hui Li,Yuanhui Sun,Tewodros Asefa,Wei Chen,Xiaoxin Zou +8 more
TL;DR: Experimental results and theoretical calculations indicate that Ni3S2/NF's excellent catalytic activity is mainly due to the synergistic catalytic effects produced in it by its nanosheet arrays and exposed {2̅10} high-index facets.
Journal ArticleDOI
Metallic nickel nitride nanosheets realizing enhanced electrochemical water oxidation.
Kun Xu,Pengzuo Chen,Xiuling Li,Yun Tong,Hui Ding,Xiaojun Wu,Wangsheng Chu,Zhenmeng Peng,Changzheng Wu,Yi Xie +9 more
TL;DR: The finding suggests that metallic nitride nanosheets could serve as a new group of OER electrocatalysts with excellent property, and benefitting from enhanced electrical conductivity with metallic behavior and atomically disordered structure compared with bulk Ni3N and NiO nanOSheets.
Journal ArticleDOI
Nanoarchitectonics for Transition-Metal-Sulfide-Based Electrocatalysts for Water Splitting.
Yanna Guo,Yanna Guo,Teahoon Park,Jin Woo Yi,Joel Henzie,Jeonghun Kim,Zhongli Wang,Bo Jiang,Yoshio Bando,Yoshiyuki Sugahara,Jing Tang,Yusuke Yamauchi +11 more
TL;DR: Insightful insights gathered in the process of studying TMS are provided, and valuable guidelines for engineering other kinds of nanomaterial catalysts for energy conversion and storage technologies are described.