Abstract
We have designed a self-standing anode built-up from highly conductive 3D-sponged nanofibers, that is, with no current collectors, binders, or additional conductive agents. The small diameter of the fibers combined with an internal spongelike porosity results in short distances for lithium-ion diffusion and 3D pathways that facilitate the electronic conduction. Moreover, functional groups at the fiber surfaces lead to the formation of a stable solid-electrolyte interphase. We demonstrate that this anode enables the operation of Li-cells at specific currents as high as 20 A g-1 (approx. 50C) with excellent cycling stability and an energy density which is >50% higher than what is obtained with a commercial graphite anode.
References
Oct 16, 2004·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Andrea Carlo Ferrari, John Robertson
May 4, 2005·Nature Materials·Antonino Salvatore AricòWalter van Schalkwijk
Apr 22, 1994·Science·K SatoM Endo
Feb 8, 2008·Nature·M Armand, J-M Tarascon
Jul 26, 2008·Nature Nanotechnology·Candace K ChanYi Cui
Mar 1, 2012·Proceedings of the National Academy of Sciences of the United States of America·Seok Woo LeeYi Cui
Jul 4, 2012·Accounts of Chemical Research·John B Goodenough
Aug 7, 2012·Angewandte Chemie·Li WangChangyin Jiang
Aug 17, 2012·Nature·Steven Chu, Arun Majumdar
Sep 8, 2012·Accounts of Chemical Research·Sen XinLi-Jun Wan
Sep 20, 2012·Chemical Society Reviews·Xiaobo ChenSamuel S Mao
Feb 18, 2014·Nature Nanotechnology·Nian LiuYi Cui
Jul 16, 2014·Nano Letters·Jusef HassounBruno Scrosati
Aug 6, 2015·Nature Communications·Sa LiJu Li
Jan 2, 2016·The Journal of Physical Chemistry Letters·Bryan D McCloskey
Dec 21, 2016·Nature Materials·Steven ChuNian Liu
Jun 6, 2017·Nature Nanotechnology·Matthias KühneJurgen H Smet
Jul 27, 2017·Journal of the American Chemical Society·Jie ZhaoYi Cui
Citations
Jan 31, 2019·Small·Fucong LyuZhouguang Lu
Sep 14, 2019·Small·Dong CaiWei Han
Feb 13, 2020·Nanoscale·Qujiang SunJun Ming
Mar 16, 2021·Small·Jinhua SunMarco Agostini