Joule Heating-Driven sp2-C Domains Modulation in Biomass Carbon for High-Performance Bifunctional Oxygen Electrocatalysis (IMAGE)

Shanghai Jiao Tong University Journal Center

Joule Heating-Driven sp2-C Domains Modulation in Biomass Carbon for High-Performance Bifunctional Oxygen Electrocatalysis

Caption

  • The flash Joule heating controllably enhanced sp2-domains content in various N-doped natural biomass-based carbon.
  • The axial modulation of sp2-C domains decreased the charge density of pyridinic N and graphitic N configurations resulting into outstanding oxygen electrocatalysis.
  • The assembled Zn-air battery with optimized catalyst achieved an over 1200-h cycle stability with the peak power density of 121 mW cm-2, exceeding the commercial Pt/C + RuO2 catalysts.

Credit

Jiawei He, Yuying Zhao, Yang Li, Qixin Yuan, Yuhan Wu, Kui Wang, Kang Sun, Jingjie Wu, Jianchun Jiang, Baohua Zhang, Liang Wang, Mengmeng Fan.

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License

CC BY-NC-ND

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