阳极
电池(电)
阴极
储能
电解质
材料科学
碱性电池
氢气储存
化学工程
化学
合金
电极
冶金
功率(物理)
物理
物理化学
量子力学
工程类
作者
Yajing Liu,Xiang Chen,Yongjie Cao,Guodong Li,Jiawei Chen,Yangang Wang
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2023-08-02
卷期号:8 (8): 3639-3645
被引量:1
标识
DOI:10.1021/acsenergylett.3c01116
摘要
Hydrogen gas secondary cells are generating significant interest as a prospective solution for emerging electrical energy storage, owing to their high rechargeability and stability. However, their application is generally hindered by the high cost associated with Ni-based cathodes or Pt-based anodic catalysts. Here, we propose a low-cost alkaline H2/Na0.44MnO2 gas battery, which involves a Na0.44MnO2 cathode and an H2 gas anode in an alkaline electrolyte (6 M NaOH). The operation of the alkaline H2/Na0.44MnO2 gas battery depends on Na+ insertion/extraction in the Na0.44MnO2 cathode and H+/H2 conversion in the anode with a NiMoCo-based catalyst. Additionally, within a voltage range of 0.6–1.5 V, the alkaline H2/Na0.44MnO2 gas battery showcases a significant reversible capacity (95.2 mA h g–1 at 0.2 C) and an exceptional stability (capacity retention of 81.9% over 500 cycles at 1 C). With its cost effectiveness, environmental friendliness, and high level of safety, the alkaline H2/Na0.44MnO2 battery emerges as an appealing choice for scalable energy storage.
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