双功能
材料科学
电池(电)
阳极
催化作用
镍
氢
电极
纳米片
化学工程
制作
纳米技术
氢气储存
纳米颗粒
氢燃料
冶金
化学
合金
有机化学
物理
功率(物理)
替代医学
量子力学
医学
物理化学
病理
工程类
作者
Taoli Jiang,Ké Li,Sunhyeong Park,Kai Zheng,Yahan Meng,Yuan Yuan,Zaichun Liu,Zi‐Zhong Zhu,Xusheng Zheng,Shuang Liu,Wei Chen
出处
期刊:Nano Letters
[American Chemical Society]
日期:2022-02-07
卷期号:22 (4): 1741-1749
被引量:25
标识
DOI:10.1021/acs.nanolett.1c04940
摘要
The renaissance of long-lasting nickel-hydrogen gas (Ni-H2) battery by developing efficient, robust, and affordable hydrogen anode to replace Pt is particularly attractive for large-scale energy storage applications. Here, we demonstrate an extremely facile corrosion induced fabrication approach to achieve a self-supporting hydrogen evolution/oxidation reaction (HER/HOR) bifunctional nanosheet array electrode for Ni-H2 battery. The electrode is constituted by ultrafine Ru nanoparticles on Ni(OH)2 nanosheets grown on nickel foam. Experimental and theoretical calculation results reveal that the electrode with optimized geometric and electronic structures ensures the efficient and robust catalytic hydrogen activities. The fabricated Ni-H2 battery using the Ru-Ni(OH)2/NF anode with an industrial scale areal capacity of 16 mAh cm-2 demonstrates a high energy density, good rate capability and excellent durability without capacity decay over 1800 h. This study casts light on the development of low manufacturing cost and high performance bifunctional hydrogen catalytic electrodes for future hydrogen energy applications.
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