Energy-saving hydrogen production by chlorine-free hybrid seawater splitting coupling hydrazine degradation.
Energy-saving hydrogen production by chlorine-free hybrid seawater splitting coupling hydrazine degradation.
复制标题
无氯混合海水裂解耦合肼降解节能制氢
DOI:
10.1038/s41467-021-24529-3
复制
发表时间:
2021-07-07
影响因子:
16.6
通讯作者:
Qiu J
中科院分区:
文献类型:
--
作者:
Sun F;Qin J;Wang Z;Yu M;Wu X;Sun X;Qiu J
Seawater electrolysis represents a potential solution to grid-scale production of carbon-neutral hydrogen energy without reliance on freshwater. However, it is challenged by high energy costs and detrimental chlorine chemistry in complex chemical environments. Here we demonstrate chlorine-free hydrogen production by hybrid seawater splitting coupling hydrazine degradation. It yields hydrogen at a rate of 9.2 mol h–1gcat–1on NiCo/MXene-based electrodes with a low electricity expense of 2.75 kWh per m3H2at 500 mA cm–2and 48% lower energy equivalent input relative to commercial alkaline water electrolysis. Chlorine electrochemistry is avoided by low cell voltages without anode protection regardless Cl–crossover. This electrolyzer meanwhile enables fast hydrazine degradation to ~3 ppb residual. Self-powered hybrid seawater electrolysis is realized by integrating low-voltage direct hydrazine fuel cells or solar cells. These findings enable further opportunities for efficient conversion of ocean resources to hydrogen fuel while removing harmful pollutants.
登录
查看更多内容
影响因子:
16.6
作者:
Liu X;He J;Zhao S;Liu Y;Zhao Z;Luo J;Hu G;Sun X;Ding Y
通讯作者:
Ding Y
影响因子:
29.4
作者:
Liu, Shaohong;Wang, Zhiyu;Qiu, Jieshan
通讯作者:
Qiu, Jieshan
影响因子:
16.6
作者:
Liu, Yi;Zhang, Jihua;Zhang, Genqiang
通讯作者:
Zhang, Genqiang
影响因子:
16.6
作者:
Fan, Zeyu;Xiao, Wei
通讯作者:
Xiao, Wei
影响因子:
11.4
作者:
Kou, Tianyi;Wang, Shanwen;Li, Yat
通讯作者:
Li, Yat