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Boosting Industrial...
Boosting Industrial-Level CO2 Electroreduction of N-Doped Carbon Nanofibers with Confined Tin-Nitrogen Active Sites via Accelerating Proton Transport Kinetics
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- Hu, Xiangzhao (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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- Liu, Yingnan (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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- Cui, Wenjun (author)
- Research and Testing Centre of Material School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
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- Yang, Xiaoxuan (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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- Li, Jiantong, 1980- (author)
- KTH,Elektronik och inbyggda system
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- Zheng, Sixing (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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- Yang, Bin (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China; Institute of Zhejiang University – Quzhou, Quzhou, 324000, China
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- Li, Zhongjian (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China; Institute of Zhejiang University – Quzhou, Quzhou, 324000, China
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- Sang, Xiahan (author)
- Research and Testing Centre of Material School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China
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- Xu, Yuanyuan (author)
- KTH,Wallenberg Wood Science Center
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- Lei, Lecheng (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China; Institute of Zhejiang University – Quzhou, Quzhou, 324000, China
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- Hou, Yang (author)
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China; Institute of Zhejiang University – Quzhou, Quzhou, 324000, China; School of Biological and Chemical Engineering, NingboTech University, 1 South Qianhu Road, Ningbo, Zhejiang, 315100, China, 1 South Qianhu Road, Zhejiang; Donghai Laboratory, No.1 Zheda Road, Zhoushan, Zhejiang, 316021, China, No.1 Zheda Road, Zhejiang
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(creator_code:org_t)
- 2022-11-28
- 2023
- English.
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In: Advanced Functional Materials. - : John Wiley and Sons Inc. - 1616-301X .- 1616-3028. ; 33:4
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Abstract
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- The development of highly efficient robust electrocatalysts with low overpotential and industrial-level current density is of great significance for CO2 electroreduction (CO2ER), however the low proton transport rate during the CO2ER remains a challenge. Herein, a porous N-doped carbon nanofiber confined with tin-nitrogen sites (Sn/NCNFs) catalyst is developed, which is prepared through an integrated electrospinning and pyrolysis strategy. The optimized Sn/NCNFs catalyst exhibits an outstanding CO2ER activity with the maximum CO FE of 96.5%, low onset potential of −0.3 V, and small Tafel slope of 68.8 mV dec−1. In a flow cell, an industrial-level CO partial current density of 100.6 mA cm−2 is achieved. In situ spectroscopic analysis unveil the isolated Sn-N site acted as active center for accelerating water dissociation and subsequent proton transport process, thus promoting the formation of intermediate *COOH in the rate-determining step for CO2ER. Theoretical calculations validate pyrrolic N atom adjacent to the Sn-N active species assisted reducing the energy barrier for *COOH formation, thus boosting the CO2ER kinetics. A Zn-CO2 battery is designed with the cathode of Sn/NCNFs, which delivers a maximum power density of 1.38 mW cm−2 and long-term stability.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- CO electroreduction 2
- porous carbon nanofibers
- proton transfer kinetics
- Sn-N active sites
- Zn-CO batteries 2
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Hu, Xiangzhao
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Liu, Yingnan
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Cui, Wenjun
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Yang, Xiaoxuan
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Li, Jiantong, 19 ...
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Zheng, Sixing
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Yang, Bin
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Li, Zhongjian
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Sang, Xiahan
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Xu, Yuanyuan
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Lei, Lecheng
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Hou, Yang
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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Royal Institute of Technology