电解
阳极
电解质
太阳能燃料
阴极
液态金属
电极
化学工程
材料科学
太阳能
火星探测计划
氧气
析氧
电池(电)
惰性气体
化学能
无机化学
化学
电化学
冶金
天体生物学
催化作用
物理化学
生态学
工程类
生物
生物化学
光催化
物理
有机化学
功率(物理)
量子力学
作者
Hao Shi,Zhou Fang,Muya Cai,Minghao Liu,Peilin Wang,Keming Du,Huayi Yin,Dihua Wang
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2023-06-05
卷期号:11 (24): 9235-9242
标识
DOI:10.1021/acssuschemeng.3c02346
摘要
Oxygen and fuels are requisites for outer space exploration. Herein, we use a liquid Na–Sn cathode and a Ni-based inert anode to convert CO2 into Na–Sn and oxygen in molten Na2CO3–NaCl by electrolysis, aiming to produce oxygen and store solar energy in liquid Na–Sn when the sun shines. In the same Na2CO3–NaCl electrolyte, the liquid Na–Sn serves as a negative electrode coupled with a porous FeNi positive electrode that allows the reduction of CO2 to CO in a primary cell, converting chemical energy stored in Na–Sn into electricity and CO that is a valuable fuel when the sun does not shine. This system has an overall energy efficiency of 51.0% at 100 mA cm–2. Therefore, the molten carbonate electrolysis device equipped with a liquid metal electrode could be applied for producing O2 and storing solar energy in energetic chemicals (e.g., Na–Sn, CO), which could be applied for outer space exploration such as Mars.
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