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Atomic-level tuning of Co–N–C catalyst for high-performance electrochemical H2O2 production

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Title
Atomic-level tuning of Co–N–C catalyst for high-performance electrochemical H2O2 production
Author(s)
Euiyeon Jung; Heejong Shin; Byoung-Hoon Lee; Efremov V.; Lee S.; Hyeon Seok Lee; Jiheon Kim; Wytse Hooch Antink; Subin Park; Lee K.-S.; Cho S.-P.; Yoo J.S.; Yung-Eun Sung; Taeghwan Hyeon
Publication Date
2020-04
Journal
NATURE MATERIALS, v.19, no.4, pp.436 - 442
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2020, The Author(s), under exclusive licence to Springer Nature Limited. Despite the growing demand for hydrogen peroxide it is almost exclusively manufactured by the energy-intensive anthraquinone process. Alternatively, H2O2 can be produced electrochemically via the two-electron oxygen reduction reaction, although the performance of the state-of-the-art electrocatalysts is insufficient to meet the demands for industrialization. Interestingly, guided by first-principles calculations, we found that the catalytic properties of the Co–N4 moiety can be tailored by fine-tuning its surrounding atomic configuration to resemble the structure-dependent catalytic properties of metalloenzymes. Using this principle, we designed and synthesized a single-atom electrocatalyst that comprises an optimized Co–N4 moiety incorporated in nitrogen-doped graphene for H2O2 production and exhibits a kinetic current density of 2.8 mA cm−2 (at 0.65 V versus the reversible hydrogen electrode) and a mass activity of 155 A g−1 (at 0.65 V versus the reversible hydrogen electrode) with negligible activity loss over 110 hours
URI
https://pr.ibs.re.kr/handle/8788114/8706
DOI
10.1038/s41563-019-0571-5
ISSN
1476-1122
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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