An Electrochemical Ethylamine/Acetonitrile Redox Method for Ambient Hydrogen Storage
An Electrochemical Ethylamine/Acetonitrile Redox Method for Ambient Hydrogen Storage
复制标题
电化学乙胺/乙腈氧化还原法用于环境储氢
DOI：
10.1021/acsami.1c20498
复制
发表时间：
2021
影响因子：
9.5
通讯作者：
Peng, Zhenmeng
中科院分区：
文献类型：
--
作者：
Wu, Dezhen;Li, Jialu;Yao, Libo;Xie, Rongxuan;Peng, Zhenmeng
储氢是氢经济发展的一大难点。在此，我们报告了一种新的电化学乙胺/乙腈氧化还原储氢方法与8.9重量%的理论存储容量在环境条件下。该方法具有较低的起始过电位为0.19 V的CH 3CH 2NH 2脱氢为CH 3CN和0.09 V的CH 3CN加氢为CH 3CH 2NH 2使用商业铂黑催化剂。通过组装将CH 3CH 2NH 2/CH 3CN氧化还原反应与析氢和氧化反应耦合的全电池，我们展示了快速的完整储氢循环，以1 L/m2·h的速率吸收和释放H2的能量消耗仅为52.5 kJ/mol。该方法提供了一种可行的储氢策略，可满足2025年能源部车载储氢目标。
Hydrogen storage presents a major difficulty in the development of hydrogen economy. Herein, we report a new electrochemical ethylamine/acetonitrile redox method for hydrogen storage with an 8.9 wt % theoretical storage capacity under ambient conditions. This method exhibits low onset overpotentials of 0.19 V in CH3CH2NH2dehydrogenation to CH3CN and 0.09 V in CH3CN hydrogenation to CH3CH2NH2using commercial Pt black catalyst. By assembling a full cell that couples CH3CH2NH2/CH3CN redox reactions with hydrogen evolution and oxidation reactions, we demonstrate a complete hydrogen storage cycle at fast rates, with only 52.5 kJ/mol energy consumption for H2uptake and release at a rate of 1 L/m2·h. This method provides a viable hydrogen storage strategy that meets the 2025 Department of Energy onboard hydrogen storage target.