Enhancing Fuel Cell Durability with Heteroenergetic TaOx-Carbon Support

Authors
Choi, SuyeonHong, DoosunYang, HyunwooRoh, JeonghanYoo, JaeyoungLee, ChangsooKim, MinjoongYun, Young HwaBang, KihoonKim, Jong MinCho, EunaeHan, Sang SooKim, DonghunLee, Hyuck Mo
Issue Date
2024-09
Publisher
American Chemical Society
Citation
ACS Energy Letters, v.9, no.9, pp.4265 - 4272
Abstract
Attaining the high durability of supported metal catalysts in heterogeneous catalysis remains a significant challenge. Here, we introduce a mixed tantalum oxide-carbon support for an oxygen reduction reaction catalyst in alkaline fuel cells, aiming to address the degradation arising from suboptimal metal-support interactions. The composite support, conceptualized as a heteroenergetic support, comprises two distinct components exhibiting substantially disparate affinities for metal nanoparticles (NPs). This unique configuration ensures the effective stabilization of the metal NPs on the support. The Au-doped Pd NPs on the mixed tantalum oxide-carbon support exhibit fully sustained mass activity even after a 10000-cycle accelerated durability test. This exceptional durability is ascribed to the effective suppression of the particle agglomerations, as elucidated through transmission electron microscopy and X-ray photoelectron spectroscopy. Our study highlights the efficacy of a heteroenergetic support as a compelling approach for achieving ultradurability in catalytic operations and indicates the broad applicability of this strategy for diverse reactions.
Keywords
OXYGEN REDUCTION REACTION; NANOPARTICLES; STABILITY; PLATINUM; CATALYSTS; ELECTROCATALYST; SIZE
ISSN
2380-8195
URI
https://pubs.kist.re.kr/handle/201004/150467
DOI
10.1021/acsenergylett.4c01946
Appears in Collections:
KIST Article > 2024
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