A porous Co3O4-carbon paper electrode enabling nearly 100% electrocatalytic reduction of nitrate to ammonia

Xufeng Rao; Jiaying Yan; Koji Yokoyama; Xiaolin Shao; Chihiro Inoue; Mei-fang Chien; Yuyu Liu

Materials Reports: Energy (Aug 2023)

A porous Co3O4-carbon paper electrode enabling nearly 100% electrocatalytic reduction of nitrate to ammonia

Xufeng Rao,
Jiaying Yan,
Koji Yokoyama,
Xiaolin Shao,
Chihiro Inoue,
Mei-fang Chien,
Yuyu Liu

Affiliations

Xufeng Rao: Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai, 200444, PR China; Graduate School of Environmental Studies, Tohoku University, Aoba Ku, Aoba 6-6-20 Aramaki, Sendai, Miyagi, 9808579, Japan
Jiaying Yan: Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai, 200444, PR China
Koji Yokoyama: Graduate School of Environmental Studies, Tohoku University, Aoba Ku, Aoba 6-6-20 Aramaki, Sendai, Miyagi, 9808579, Japan
Xiaolin Shao: Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai, 200444, PR China; Graduate School of Environmental Studies, Tohoku University, Aoba Ku, Aoba 6-6-20 Aramaki, Sendai, Miyagi, 9808579, Japan
Chihiro Inoue: Graduate School of Environmental Studies, Tohoku University, Aoba Ku, Aoba 6-6-20 Aramaki, Sendai, Miyagi, 9808579, Japan
Mei-fang Chien: Graduate School of Environmental Studies, Tohoku University, Aoba Ku, Aoba 6-6-20 Aramaki, Sendai, Miyagi, 9808579, Japan
Yuyu Liu: Institute for Sustainable Energy/College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai, 200444, PR China; Corresponding author.

Journal volume & issue: Vol. 3, no. 3
p. 100216

Abstract

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Co3O4 was synthesized on carbon paper (CP) using a facile method to improve electrochemical nitrate-to-ammonia conversion efficiency. The resulting Co3O4-CP electrode demonstrated an exceptional Faradaic efficiency of almost 100% across a broad range of application conditions, with a peak NH3 yield of 3.43 mmol h−1 cm−2 (2.25 mol gCo−1 h−1).

Published in Materials Reports: Energy

ISSN: 2666-9358 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.keaipublishing.com/en/journals/materials-reports-energy/

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