High-voltage asymmetric metal–air batteries based on polymeric single-Zn2+-ion conductor
- Title
- High-voltage asymmetric metal–air batteries based on polymeric single-Zn2+-ion conductor
- Author
- 삼바지 시바지 신데
- Keywords
- single-ion conducting membrane; asymmetric metal–air batteries; Co single atoms; oxygen reduction and evolution reactions
- Issue Date
- 2021-04
- Publisher
- Cell Press
- Citation
- Matter, v. 4, NO 4, Page. 1287-1304
- Abstract
- Asymmetric-electrolyte metal–air batteries (AMABs) deliver high
operating voltage and energy density. However, the demand for
ion-selective transport separator and precious metal electrocata-
lysts hampers their applications. To address this issue, we develop
a polyacrylonitrile (PAN) separator that can selectively transport
Zn2+ ions and an atomically dispersed Co electrocatalyst that can
catalyze oxygen evolution reactions (OERs) and oxygen reduction
reactions (ORRs) in the challenging acidic medium. The selective
ion transport behavior was associated with the Zn2+ ions’ bonded
ladder structure of PAN, which raises the ion migration energy bar-
rier for the crossover of H+ and OH . In terms of electrocatalysts,
extensive ex situ and in situ characterizations suggest that Co sin-
gle-atom sites stably catalyze the OER and ORR. Several types of
AMABs (metals Zn, Si, Sn) were tested. The assembled asymmetric
metal–air Zn-, Si-, and Sn-air batteries delivered enhanced battery
performance that surpassed those of recently reported Zn-, Si-,
and Sn-air batteries, respectively.
- URI
- https://www.sciencedirect.com/science/article/pii/S2590238521000047https://repository.hanyang.ac.kr/handle/20.500.11754/171752
- ISSN
- 2590-2385
- DOI
- 10.1016/j.matt.2021.01.004
- Appears in Collections:
- RESEARCH INSTITUTE[E](부설연구소) > RESEARCH INSTITUTE OF ENGINEERING & TECHNOLOGY(공학기술연구소) > Articles
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