Efficient and Durable Anion Exchange Membrane Water Electrolysis for a Commercially Available Electrolyzer Stack using Alkaline Electrolyte,ACS Energy Letters

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Efficient and Durable Anion Exchange Membrane Water Electrolysis for a Commercially Available Electrolyzer Stack using Alkaline Electrolyte
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-07-13 , DOI: 10.1021/acsenergylett.2c01049
Myeong Je Jang _{1,

2,

3} , Seok Hwan Yang _{4,

5} , Moon Gyu Park _{1,

2} , Jaehoon Jeong ₃ , Min Suc Cha ₄ , Sang-Hun Shin ₄ , Kyu Hwan Lee ₃ , Zhengyu Bai ₂ , Zhongwei Chen ₁ , Jang Yong Lee ₄ , Sung Mook Choi _{3,

6}

Affiliation

A low-cost anion exchange membrane water electrolysis (AEMWE) stack with good performance and durability is demonstrated in this study. The configuration of an AEMWE single cell, composed of an etched copper–cobalt oxide anode (eCCO) by a simple chemical etching and a polycarbazole-based anion exchange membrane (QPC-TMA) was optimized through various single-cell studies. The large-sized three-cell AEMWE stack (total active area of 190.9 cm²) with eCCO and QPC-TMA demonstrated durability with a degradation rate of 8.5 mV kh^–1 as well as an energy conversion efficiency of 75% for 2000 h in 0.1 M KOH at 45 °C. Moreover, the production rate of H₂ is reported 40.4 L h^–1, thereby being equivalent to electricity produced by H₂ of 44 kWh kg^–1. To the best of our knowledge, this AEMWE stack has the highest performance and durability among the reported AEMWE stacks using non-platinum-group metal anodes and noncommercial membranes.

中文翻译：

使用碱性电解质的市售电解槽堆的高效和耐用的阴离子交换膜水电解

本研究展示了一种具有良好性能和耐用性的低成本阴离子交换膜电解水 (AEMWE) 电堆。AEMWE 单电池的配置由简单化学蚀刻的蚀刻铜钴氧化物阳极 (eCCO) 和聚咔唑基阴离子交换膜 (QPC-TMA) 组成，通过各种单电池研究进行了优化。具有 eCCO 和 QPC-TMA的大尺寸三芯 AEMWE 电堆（总有效面积为 190.9 cm ²）表现出耐久性，降解率为 8.5 mV kh –1，2000^小时能量转换效率为 75% 0.1 M KOH，45 °C。_{此外，据报道 H 2}的产率为40.4 L h ^-1，因此相当于 H _{2产生的电力}44 kWh kg ^–1。据我们所知，这种 AEMWE 电堆在使用非铂族金属阳极和非商业膜的已报道 AEMWE 电堆中具有最高的性能和耐用性。

更新日期：2022-07-13

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