Cobalt phosphide nanoarrays with crystalline-amorphous hybrid phase for hydrogen production in universal-pH
作者机构：School of CivilEnvironmental and Architectural EngineeringKorea UniversitySeoul 02841Republic of Korea
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2020年第13卷第9期
页 面：2469-2477页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：This work is supported by the National Research Foundation of Korea(NRF)Grant funded by the M inistry of Science and ICT,South Korea(No.2016M3A7B4909318) We thank the Korea Basic Science Institute(KBSI)for the technical support.M icrostructural images were obtained using a Hitachi SU-70 scanning electron microscope at the KBSI
主 题：cobalt phosphide self-supporting electrocatalyst hydrogen evolution reaction universal-ph large-scale
摘 要：To accomplish mass hydrogen production by electrochemical water-splitting,it is a necessary to develop robust,highly active,stable,and cost-effective hydrogen evolution reaction(HER)electrocatalysts that perform comparably to Pt in the universal pH *** this work,cobalt phosphide hybrid nanosheets supported on carbon felt(CoP HNS/CF)are presented,which exhibit the superior electrocatalytic hydrogen production under a *** these nanosheets,a single CoP HNS is composed of polycrystalline CoP and oxygen-enriched amorphous Co-O-P *** from its unique nanoarchitecture,as-fabricated CoP HNS/CF exhibits a tremendous electrocatalytic HER activity and outperforms Pt/C as well as state-of-the-art CoP electrocatalysts in *** acidic and neutral media,the CoP HNS/CF shows superior electrocatalytic activity while maintaining its original hybrid crystalline-amorphous phase and *** alkaline medium,the unexpected phase and morphological reorganization of CoP HNS/CF results in outstanding electrocatalytic *** HNS/CF not only achieves high electrocatalytic activity and kinetics,but also a stable and long operating lifetime even under a high current density of 500 mA cm ***,the fabrication of CoP HNS/CF can be scaled up easily,and the large CoP HNS/CF electrode also exhibits similar electrocatalytic activity and stability.
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