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Low-Cost and High-Performance Anion-Exchange Membrane Water Electrolysis Stack Using Non-Noble Metal-Based Materials

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Title
Low-Cost and High-Performance Anion-Exchange Membrane Water Electrolysis Stack Using Non-Noble Metal-Based Materials
Author(s)
SungBin Park; Park, Ji Eun; Geumbi Na; Choi, Changsoon; Yong-Hun Cho; Yung-Eun Sung
Publication Date
2023-08
Journal
ACS Applied Energy Materials, v.6, no.17, pp.8738 - 8748
Publisher
American Chemical Society
Abstract
With increasing hydrogen demand, the development of a low-cost and high-performance anion-exchange membrane water electrolysis (AEMWE) stack is crucial. Here, two AEMWE models using all non-noble metal-based components were developed. Three components of the membrane electrode assembly─a porous transport layer (PTL), an oxygen evolution reaction (OER) catalyst, and a hydrogen evolution reaction (HER) catalyst─were examined to be substituted for a non-noble metal. The results revealed that stainless steel felt and carbon paper were the anode and cathode PTLs, respectively, exhibiting the highest and most durable performance. Additionally, nickel-iron (NiFe) was selected as the most applicable OER catalyst. Further, low-loading platinum and nickel-iron oxide (NiFeOx) were optimized as suitable HER catalysts. For a single cell, the resulting AEMWEs showed outstanding performance of 4633 and 1231 mA cm-2 at 2.1 V, with stable performance for 500 h. Further, they exhibited a higher performance relative to their cost than all noble metal AEMWEs. High performances were also observed for 5-layer stacks, in addition to stable durability and energy conversion efficiency. This work supports the commercialization of a low-cost, high-performance, and durable AEMWE stack. © 2023 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/14418
DOI
10.1021/acsaem.3c01215
ISSN
2574-0962
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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