海水
析氧
分解水
电解
催化作用
无定形固体
电化学
氯
联氨(抗抑郁剂)
无机化学
电解水
制氢
化学
化学工程
材料科学
电极
结晶学
冶金
物理化学
有机化学
地质学
电解质
色谱法
光催化
工程类
海洋学
作者
Kai Deng,Qiqi Mao,Wenxin Wang,Peng Wang,Ziqiang Wang,You Xu,Xiao‐Nian Li,Hongjing Wang,Liang Wang
标识
DOI:10.1016/j.apcatb.2022.121338
摘要
Seawater splitting is considered as a promising way to replace water splitting for H2 production due to the enrichment of seawater resources. However, the development of this technology has been greatly hampered by the lack of efficient electrocatalysts and the detrimental effects of chlorine electrochemistry. Herein, we report a defect-rich low-crystalline Rh metallene (l-Rh metallene) with an amorphous/crystalline hetero-phase structure for seawater electrolysis, where chlorine generation is avoided by replacing the oxygen evolution reaction (OER) with the hydrazine oxidation reaction (HzOR). Benefiting from the large surface-to-volume ratio, abundant active sites and unique electronic structure, the l-Rh metallene exhibits out-standing catalytic activity for both hydrogen evolution reaction (HER, −38 mV at 10 mA cm−2) and HzOR (−2 mV at 10 mA cm−2). Notably, an ultra-low voltage of only 28 mV is required to achieve 10 mA cm−2 in two-electrode hydrazine-assisted seawater splitting system.
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