@article {kong_direct_2016, title = {Direct {Superassemblies} of {Freestanding} {Metal}-{Carbon} {Frameworks} {Featuring} {Reversible} {Crystalline}-{Phase} {Transformation} for {Electrochemical} {Sodium} {Storage}}, journal = {J. Am. Chem. Soc.}, volume = {138}, number = {50}, year = {2016}, note = {WOS:000390729500051}, month = {12/2016}, pages = {16533{\textendash}16541}, abstract = {

High-power sodium-ion batteries (SIBs) with long-term cycling attract increasing attention for large-scale energy storage. However, traditional SIBs toward practical applications still suffer from low rate capability and poor cycle induced by pulverization and amorphorization of anodes at high rate (over 5 C) during the fast ion insertion/extraction process. The present work demonstrates a robust strategy for a variety of (Sb-C, Bi-C, Sn-C, Ge-C, Sb-Bi-C) freestanding metal carbon framework thin films via a space-confined superassembly (SCSA) strategy. The sodium-ion battery employing the Sb-C framework exhibits an unprecedented performance with a high specific capacity of 246 mAh g(-1), long life cycle (5000 cycles), and superb capacity retention (almost 100\%) at a high rate of 7.5 C (3.51A g(-1)). Further investigation indicates that the unique framework structure enables unusual reversible crystalline-phase transformation, guaranteeing the fast and long-cyclability sodium storage. This study may open an avenue to developing long-cycle-life and high-power SIBs for practical energy applications.

}, keywords = {composite, high-capacity, high-performance anode, lithium-ion, na-ion batteries, nucleation, porous carbon, promising anode material, reduced graphene oxide, ultralong cycle life}, issn = {0002-7863}, doi = {10.1021/jacs.6b10782}, author = {Kong, Biao and Zu, Lianhai and Peng, Chengxin and Zhang, Yan and Zhang, Wei and Tang, Jing and Selomulya, Cordelia and Zhang, Liudi and Chen, Hanxing and Wang, Yang and Liu, Yang and He, Haili and Wei, Jing and Ling, Xiaocheng and Luo, Wei and Yang, Jianping and Zhao, Zaiwang and Liu, Yong and Yang, Jinhu and Zhao, Dongyuan} }