Journal ArticleDOI
CoP2/Fe-CoP2 yolk-shell nanoboxes as efficient electrocatalysts for the oxygen evolution reaction.
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In this article, the authors synthesized CoP2/Fe-CoP2 yolk-shell nanoboxes (YSBs) as efficient electrocatalysts for the oxygen evolution reaction (OER).Abstract:
The development of an efficient electrocatalyst is an important requirement for water splitting systems to produce clean and sustainable hydrogen fuel Herein, we synthesized CoP2/Fe-CoP2 yolk–shell nanoboxes (YSBs) as efficient electrocatalysts for the oxygen evolution reaction (OER) Initially, zeolitic imidazolate framework-67/CoFe-Prussian blue analogue (ZIF-67/CoFe-PBA) YSBs were prepared by the reaction of ZIF-67 and [Fe(CN)6]3− ions in the presence of a small amount of water as an etching agent The size of the CoP2 yolk depends on the amount of water The heteronanostructure composed of the CoP2 yolk and the FexCo1−xP2 shell with a cubic shape was obtained by phosphidation of ZIF-67/CoFe-PBA YSBs Benefiting from the unique structure and chemical composition, the CoP2/Fe-CoP2 YSB electrocatalyst has a large specific surface area of 114 m2 g−1 and shows superior electrocatalytic performances for the OER such as a low overpotential of 266 mV, a small Tafel slope value of 681 mV dec−1, and excellent cyclic stabilityread more
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The cutting-edge phosphorus-rich metal phosphides for energy storage and conversion
Xudong Zhao,Xianglong Kong,Zhiliang Liu,Zhi Li,Zewei Xie,Zhuoyan Wu,Fei He,Xinghua Chang,Piaoping Yang,Jie Zheng,Xingguo Li +10 more
TL;DR: In this article, a review summarizes the up-to-date advances of P-rich metal phosphides (MPs) in energy storage and conversion from typical structures, main synthetic methods and diversified advanced applications.
Journal ArticleDOI
ZIF-67-based catalysts for oxygen evolution reaction
TL;DR: In this paper, the morphological engineering of the original ZIF-67 and its derivatives (core-shell, hollow, and array structures) through doping (cation doping, anion doping, and co-doping), derivative composition engineering (metal oxide, phosphide, sulfide, selenide, and telluride), and corresponding single-atom catalysis.
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Encapsulating Fe2O3 Nanotubes into Carbon-Coated Co9S8 Nanocages Derived from a MOFs-Directed Strategy for Efficient Oxygen Evolution Reactions and Li-Ions Storage
Shoushuang Huang,Zhiqiang Jin,Yanwei Ding,Ping Ning,Qiaochuan Chen,Jie Fu,Qian Zhang,Jie Zhang,Peijun Xin,Yong Jiang,Zhangjun Hu,Zhangjun Hu +11 more
TL;DR: In this paper, a yolk-shell structure of Fe2 O3 nanotube@hollow Co9 S8 nanocage@C is rationally prepared, and a prearranged sequence is followed by coating of zeolitic imidazolate framework (ZIF-67) layer, chemical etching of ZIF -67 by thioacetamide, and eventual annealing treatment.
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Earth-Abundant Electrocatalysts for Water Splitting: Current and Future Directions
Ibn Shamsah,M Sami +1 more
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Tailoring the structure and function of metal organic framework by chemical etching for diverse applications
Yi-Tao Feng,Jian-Quan Yao +1 more
TL;DR: In this article , a review focusing on the topic of "etching MOFs" is presented, which can be broadly classified into four categories including pore engineering, surface/facet modification, defect modification and self-templated conversion to layered metal hydroxides (LDHs).
References
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Journal ArticleDOI
Cobalt phosphide/carbon dots composite as an efficient electrocatalyst for oxygen evolution reaction.
TL;DR: The experimental results show that when the amount of CDs in the composite is 6 mg (28.79 wt%C), the obtained CoP/CDs composite exhibits optimal electrocatalytic activity and high stability towards the OER.
Journal ArticleDOI
Self-supported Al-doped cobalt phosphide nanosheets grown on three-dimensional Ni foam for highly efficient water reduction and oxidation
TL;DR: In this paper, cross-linked Al-doped CoP nanosheets on three-dimensional (3D) nickel foam (Al-CoP/NF) are synthesized by a simple low-temperature phosphidation method using a CoAl layer double hydroxide precursor and exhibit high activity and good stability towards the hydrogen evolution reaction (HER) at all pH values.
Journal ArticleDOI
Hierarchical Nanoboxes Composed of Co9S8−MoS2 Nanosheets as Efficient Electrocatalysts for the Hydrogen Evolution Reaction
TL;DR: The electrocatalytic activity of Co9 S8 -MoS2 HNBs is superior to that of recently reported values, and these H NBs prove to be promising candidates for the HER.
Journal ArticleDOI
Bimetallic MnCo selenide yolk shell structures for efficient overall water splitting
TL;DR: In this paper, the authors systematically investigate and compare the activity of MnCo-based electrocatalysts (i.e., selenide, oxide, and hydroxide) for the oxygen evolution reaction and hydrogen evolution reaction (HER) in alkaline solutions, showing that the selenides are oxidized upon OER and the surface generated oxides are the real OER active species.
Journal ArticleDOI
Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution
TL;DR: In this paper, a 3D mesoporous and ultrathin array of CoN nanosheets is synthesized on the Ni foam via thermal transformation of Co3O4 nanowire arrays.