期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
An Ultra-microporous Carbon Material Boosting Integrated Capacitance for Cellulose-Based Supercapacitors 被引量:2
1
作者 Chenfeng Ding Tianyi Liu +6 位作者 Xiaodong Yan lingbo huang Seungkon Ryu Jinle Lan Yunhua Yu Wei?Hong Zhong Xiaoping Yang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第5期78-94,共17页
A breakthrough in advancing power density and stability of carbon-based supercapacitors is trapped by inefficient pore structures of electrode materials.Herein,an ultramicroporous carbon with ultrahigh integrated capa... A breakthrough in advancing power density and stability of carbon-based supercapacitors is trapped by inefficient pore structures of electrode materials.Herein,an ultramicroporous carbon with ultrahigh integrated capacitance fabricated via one-step carbonization/activation of dense bacterial cellulose(BC)precursor followed by nitrogen/sulfur dual doping is reported.The microporous carbon possesses highly concentrated micropores(~2 nm)and a considerable amount of sub-micropores(<1 nm).The unique porous structure provides high specific surface area(1554 m^2 g^-1)and packing density(1.18 g cm^-3).The synergistic effects from the particular porous structure and optimal doping effectively enhance ion storage and ion/electron transport.As a result,the remarkable specific capacitances,including ultrahigh gravimetric and volumetric capacitances(430 F g^-1 and 507 F cm^-3 at 0.5 A g^-1),and excellent cycling and rate stability even at a high current density of 10 A g^-1(327 F g^-1 and 385 F cm^-3)are realized.Via compositing the porous carbon and BC skeleton,a robust all-solid-state cellulose-based supercapacitor presents super high areal energy density(~0.77 mWh cm^-2),volumetric energy density(~17.8 W L^-1),and excellent cyclic stability. 展开更多
关键词 INTEGRATED CAPACITANCE Bacterial cellulose MICROPOROUS carbon HETEROATOM doping SUPERCAPACITORS
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部