TY - JOUR AU - Yu Wang, AU - Ying Zhu, AU - Hailiang Chu, AU - Shujun Qiu, AU - Yongjin Zou, AU - Cuili Xiang, AU - Huanzhi Zhang, AU - Kexiang Zhang, AU - Erhu Yan, AU - Bin Li, AU - Dan Cai, AU - Xiangcheng Lin, AU - Hongliang Peng, AU - Xin Wen, AU - Fen Xu, AU - Lixian Sun, PY - 2020/09/08 Y2 - 2024/03/29 TI - Porous Carbons Derived from Ginkgo Shell Used for High-Performance Supercapacitors JF - Nanoarchitectonics JA - Nanoarchitectonics VL - 2 IS - 1 SE - Article DO - 10.37256/nat.212021533 UR - https://ojs.wiserpub.com/index.php/NAT/article/view/533 SP - 27-38 AB - <p>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&nbsp;has microporous and mesoporous structure with specific surface area (SSA) of up to 1941 m<sup>2</sup> g<sup>-1</sup> , which exhibits superior&nbsp;capacitive properties. In a three-electrode system by using 6 M KOH as electrolyte, GSPC-700-1:2 could deliver a high&nbsp;specific capacitance of 345 F g<sup>-1</sup> at 0.5 A g<sup>-1</sup> . Even at a high current density of 20 A g<sup>-1</sup> , the specific capacitance of as high&nbsp;as 280 F g<sup>-1</sup> 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<sup>-1</sup> after 10000 charging/discharging cycles. A power density&nbsp;of 301 W kg<sup>-1</sup> is achieved at an energy density of 13 W h kg<sup>-1</sup> . The superior electrochemical performance demonstrates that&nbsp;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.</p> ER -