Journal ArticleDOI
Metallic Co4N Porous Nanowire Arrays Activated by Surface Oxidation as Electrocatalysts for the Oxygen Evolution Reaction
Pengzuo Chen,Kun Xu,Zhiwei Fang,Yun Tong,Junchi Wu,Xiuli Lu,Xu Peng,Hui Ding,Changzheng Wu,Yi Xie +9 more
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TLDR
This work developed metallic Co4N porous nanowire arrays directly grown on flexible substrates as highly active OER electrocatalysts for the first time, which is the best OER performance among reported Co-based electrocatalyst performance to date.Abstract:
Designing highly efficient electrocatalysts for oxygen evolution reaction (OER) plays a key role in the development of various renewable energy storage and conversion devices. In this work, we developed metallic Co4N porous nanowire arrays directly grown on flexible substrates as highly active OER electrocatalysts for the first time. Benefiting from the collaborative advantages of metallic character, 1D porous nanowire arrays, and unique 3D electrode configuration, surface oxidation activated Co4N porous nanowire arrays/carbon cloth achieved an extremely small overpotential of 257 mV at a current density of 10 mA cm(-2), and a low Tafel slope of 44 mV dec(-1) in an alkaline medium, which is the best OER performance among reported Co-based electrocatalysts to date. Moreover, in-depth mechanistic investigations demonstrate the active phases are the metallic Co4N core inside with a thin cobalt oxides/hydroxides shell during the OER process. Our finding introduces a new concept to explore the design of high-efficiency OER electrocatalysts.read more
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Electrocatalysis for the oxygen evolution reaction: recent development and future perspectives
TL;DR: This review acquaints some materials for performing OER activity, in which the metal oxide materials build the basis of OER mechanism while non-oxide materials exhibit greatly promising performance toward overall water-splitting.
Journal ArticleDOI
Emerging Two-Dimensional Nanomaterials for Electrocatalysis
Huanyu Jin,Chunxian Guo,Xin Liu,Jinlong Liu,Anthony Vasileff,Yan Jiao,Yao Zheng,Shi-Zhang Qiao +7 more
TL;DR: The fundamental relationships between electronic structure, adsorption energy, and apparent activity for a wide variety of 2D electrocatalysts are described with the goal of providing a better understanding of these emerging nanomaterials at the atomic level.
Journal ArticleDOI
Hierarchical NiCo2S4 Nanowire Arrays Supported on Ni Foam: An Efficient and Durable Bifunctional Electrocatalyst for Oxygen and Hydrogen Evolution Reactions
TL;DR: In this paper, the NiCo2S4 NW/NF arrays on a 3D Ni foam (NF) were used for solar-to-hydrogen (S2H) generation, achieving a hydrogen production current density of 10 mA cm-2 at an overpotential of 260 mV for the oxygen evolution reaction and at 210 mV (versus a reversible hydrogen electrode).
Journal ArticleDOI
Electrocatalytic oxygen evolution reaction for energy conversion and storage: A comprehensive review
Muhammad Tahir,Muhammad Tahir,Lun Pan,Lun Pan,Faryal Idrees,Xiangwen Zhang,Li Wang,Ji-Jun Zou,Zhong Lin Wang,Zhong Lin Wang +9 more
TL;DR: In this paper, a review article summarizes the very recent efforts in the field of OER electrocatalysis along with the faced challenges and solutions to these challenges also outline with appropriate examples of scientific literatures.
Journal ArticleDOI
MOF-derived electrocatalysts for oxygen reduction, oxygen evolution and hydrogen evolution reactions
TL;DR: A wide range of applications based on these materials for ORR, OER, HER and multifunctional electrocatalysis are discussed, with an emphasis on the required features of MOF-derived carbon-based materials for the Electrocatalysis of corresponding reactions.
References
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Opportunities and challenges for a sustainable energy future
Steven Chu,Arun Majumdar +1 more
TL;DR: This Perspective provides a snapshot of the current energy landscape and discusses several research and development opportunities and pathways that could lead to a prosperous, sustainable and secure energy future for the world.
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Self-Supported Nanoporous Cobalt Phosphide Nanowire Arrays: An Efficient 3D Hydrogen-Evolving Cathode over the Wide Range of pH 0–14
TL;DR: The topotactic fabrication of self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth via low-temperature phosphidation of the corresponding Co(OH)F/CC precursor offers excellent catalytic performance and durability under neutral and basic conditions.
Journal ArticleDOI
Metal–Organic Framework Derived Hybrid Co3O4-Carbon Porous Nanowire Arrays as Reversible Oxygen Evolution Electrodes
TL;DR: The achieved ultrahigh oxygen evolution activity and strong durability, with superior performance in comparison to the state-of-the-art noble-metal/transition-metal and nonmetal catalysts, originate from the unique nanowire array electrode configuration and in situ carbon incorporation, which lead to the large active surface area, enhanced mass/charge transport capability, easy release of oxygen gas bubbles, and strong structural stability.
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.