Electrochemical CO2 reduction to formic acid on crystalline SnO2 nanosphere catalyst

Yishu Fu, Yuyu Liu, Yanan Li, Jinli Qiao, Xiao Dong Zhou

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

In this work, the morphology controlled SnO2 nanosphere catalyst has been successfully synthesized and applied to electrochemical CO2 reduction to formic acid in 0.5 M KHCO3. The catalysts were synthesized by a simple hydrothermal method under controlling the different proportions of ethanol to distilled water as mixed solvent. The obtained catalysts were then coated on gas diffusion electrode (SnO2/GDE) as working electrode. It was found that the catalyst prepared from 50% content of ethanol gives the best catalytic activity towards CO2 reduction, where the onset potential was found to be 300 mV more anodic than that of hydrogen evolution. Meanwhile, the SnO2/GDE-50 showed the most stable property for CO2 reduction. The current density and faradaic efficiency increased as the potential increased, reaching a maximum at -1.7 V vs. SHE. At this stage, the maximum faradaic efficiency of 68% with a current density of 6 mA cm-2 was obtained. Moreover, the production rate of format exhibits a maximum value of 518.2 mg L-1 at the cathode potential of -1.9 V vs. SHE.

本文言語English
ホスト出版物のタイトルElectrosynthesis of Fuels 3
編集者X. D. Zhou, G. Brisard, M. B. Mogensen, W. E. Mustain, J. A. Staser, T. M. Gur, M. C. Williams
出版社Electrochemical Society Inc.
ページ53-59
ページ数7
3
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2015 1 1
イベントSymposium on Electrosynthesis of Fuels 3 - 227th ECS Meeting - Chicago, United States
継続期間: 2015 5 242015 5 28

出版物シリーズ

名前ECS Transactions
番号3
66
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

OtherSymposium on Electrosynthesis of Fuels 3 - 227th ECS Meeting
国/地域United States
CityChicago
Period15/5/2415/5/28

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

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