Charge Engineering of Mo2C@Defect-Rich N-Doped Carbon Nanosheets for Efficient Electrocatalytic H2 Evolution
書誌事項
- 公開日
- 2019-06-01
- 権利情報
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- https://creativecommons.org/licenses/by/4.0
- https://creativecommons.org/licenses/by/4.0
- DOI
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- 10.1007/s40820-019-0279-8
- 公開者
- Springer Science and Business Media LLC
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説明
<jats:title>Abstract</jats:title> <jats:p>Charge engineering of carbon materials with many defects shows great potential in electrocatalysis, and molybdenum carbide (Mo<jats:sub>2</jats:sub>C) is one of the noble-metal-free electrocatalysts with the most potential. Herein, we study the Mo<jats:sub>2</jats:sub>C on pyridinic nitrogen-doped defective carbon sheets (MoNCs) as catalysts for the hydrogen evolution reaction. Theoretical calculations imply that the introduction of Mo<jats:sub>2</jats:sub>C produces a graphene wave structure, which in some senses behaves like N doping to form localized charges. Being an active electrocatalyst, MoNCs demonstrate a Tafel slope as low as 60.6 mV dec<jats:sup>−1</jats:sup> and high durability of up to 10 h in acidic media. Besides charge engineering, plentiful defects and hierarchical morphology also contribute to good performance. This work underlines the importance of charge engineering to boost catalytic performance.</jats:p>
収録刊行物
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- Nano-Micro Letters
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Nano-Micro Letters 11 (1), 2019-06-01
Springer Science and Business Media LLC
