Porous Carbons Derived from Ginkgo Shell Used for High-Performance Supercapacitors

Yu Wang; Ying Zhu; Hailiang Chu; Shujun Qiu; Yongjin Zou; Cuili Xiang; Huanzhi Zhang; Kexiang Zhang; Erhu Yan; Bin Li; Dan Cai; Xiangcheng Lin; Hongliang Peng; Xin Wen; Fen Xu; Lixian Sun

doi:10.37256/nat.212021533

Authors

Yu Wang Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Ying Zhu Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Hailiang Chu Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Shujun Qiu Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Yongjin Zou Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Cuili Xiang Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Huanzhi Zhang Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Kexiang Zhang Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Erhu Yan Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Bin Li Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Dan Cai Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Xiangcheng Lin Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Hongliang Peng Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Xin Wen Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Fen Xu Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China
Lixian Sun Guangxi Key Laboratory of Information Materials, Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials and School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, China

DOI:

https://doi.org/10.37256/nat.212021533

Keywords:

supercapacitor, ginkgo shell, porous carbons, KOH activation

Abstract

As a renewable biomass and a low-cost crude carbon source, the ginkgo shell is explored for preparing high-value porous carbon via carbonization and the following KOH activation. Structure characterization shows that GSPC has microporous and mesoporous structure with specific surface area (SSA) of up to 1941 m² g^-1 , which exhibits superior capacitive properties. In a three-electrode system by using 6 M KOH as electrolyte, GSPC-700-1:2 could deliver a high specific capacitance of 345 F g^-1 at 0.5 A g^-1 . Even at a high current density of 20 A g^-1 , the specific capacitance of as high as 280 F g^-1 can be still maintained. Furthermore, a symmetric supercapacitor device (SCD) is fabricated by GSPC-700-1:2, which exhibits a capacitance retention rate of 83% at 5 A g^-1 after 10000 charging/discharging cycles. A power density of 301 W kg^-1 is achieved at an energy density of 13 W h kg^-1 . The superior electrochemical performance demonstrates that ginkgo shell can function as a new biomass material for the production of porous carbon materials that are used in high-performance supercapacitors and other energy storage devices.

Porous Carbons Derived from Ginkgo Shell Used for High-Performance Supercapacitors

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