The manuscript Development of a membrane electrode assembly for alkaline waterelectrolysis by direct electrodeposition of nickel on carbon papers by Dr. Sang Hyun Ahn was published in Applied Catalysis B: Environmental, 2014, 154-155, 197-205. Congratulations!

게시일: Mar 18, 2014 1:56:40 AM

Sang Hyun Ahn, Byung-Seok Lee, Insoo Choi, Sung Jong Yoo, Hyoung-Juhn Kim,EunAe Cho, Dirk Henkensmeier, Suk Woo Nam, Soo-Kil Kim, Jong Hyun Janga, “Development of a membrane electrode assembly for alkaline waterelectrolysis by direct electrodeposition of nickel on carbon papers”, Applied Catalysis B: Environmental, 2014, 154-155, 197-205. (ELSEVIER, IF:5.825, Ranking: 6/135, ISSN: 0926-3373, published date:2014). [DOI]

Abstract

A membrane electrode assembly (MEA) for use in an alkaline water electrolyzer is fabricated by sand-wiching an anion exchange membrane (AEM) between two electrodes prepared by the electrodepositionof Ni (used as a catalyst) on carbon papers (CPs) acting as gas diffusion layers. The conditions for Nielectrodepositon are determined on the basis of the results of half-cell tests for hydrogen and oxygenevolution reactions. An MEA fabricated by the direct electrodeposition of an extremely low Ni amountof 8.5 gNicm−2exhibits a high cell performance of 150 mA cm−2at 1.9 V when a 1.0 M KOH solution issupplied to the cathode. Electrodeposited Ni is uniformly distributed on the surface of CP fibers, therebyproviding a large electrochemical surface area for gas evolution reactions and thus maintaining high cata-lyst utilization. It is suggested that control of bubble generation and AEMs with higher ionic conductivitywould further increase MEA performance.

Photograph of AAEMWE cell configuration