气候变化领域集成服务门户(CCPortal): High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles

CCPortal

DOI	10.1073/pnas.2105610118
	High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles
	Ma Y.; Chen D.; Fang Z.; Zheng Y.; Li W.; Xu S.; Lu X.; Shao G.; Liu Q.; Yang W.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:21
英文摘要	In terms of ideal future energy storage systems, besides the always-pursued energy/power characteristics, long-term stability is crucial for their practical application. Here, we report a facile and sustainable strategy for the scalable fabrication of carbon aerogels with three-dimensional interconnected nanofiber networks and rationally designed hierarchical porous structures, which are based on the carbonization of bacterial cellulose assisted by the soft template of Zn-1,3,5-benzenetricarboxylic acid. As binder-free electrodes, they deliver a fundamentally enhanced specific capacitance of 352 F · g–1 at 1 A · g–1 in a wide potential window (1.2 V, 6 M KOH) in comparison with those of bacterial cellulose–derived carbons (178 F · g–1) and most activated carbons (usually lower than 250 F · g–1). The as-assembled supercapacitors exhibit an ultrahigh capacitance of 297 F · g−1 at 1 A · g−1, remarkable energy density (14.83 Wh · kg−1 at 0.60 kW · kg−1), and extremely high stability, with 100% capacitance retention for up to 65,000 cycles at 6 A · g−1, representing their superior energy storage performance when compared with that of state-of-the-art supercapacitors of commercial activated carbons and biomass-derived analogs. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Carbon aerogels; Cycling stability; Energy density; Specific capacitance; Supercapacitors
语种	英语
scopus关键词	1,3,5 benzenetricarboxylic acid; activated carbon; carbon aerogel; carboxylic acid; cellulose; nanofiber; unclassified drug; zinc; Article; biomass; carbonization; chemical structure; density; electric capacitance; energy density; molecular stability; nanofabrication; nonhuman; three-dimensional imaging
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238551
作者单位	College of Materials Science and Engineering, Hunan University, Changsha, 410082, China; Institute of Materials, Ningbo University of Technology, Ningbo, 315016, China; State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
推荐引用方式 GB/T 7714	Ma Y.,Chen D.,Fang Z.,et al. High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles[J],2021,118(21).
APA	Ma Y..,Chen D..,Fang Z..,Zheng Y..,Li W..,...&Yang W..(2021).High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles.Proceedings of the National Academy of Sciences of the United States of America,118(21).
MLA	Ma Y.,et al."High energy density and extremely stable supercapacitors based on carbon aerogels with 100% capacitance retention up to 65,000 cycles".Proceedings of the National Academy of Sciences of the United States of America 118.21(2021).