Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China.
ACS Appl Mater Interfaces. 2013 Jul 24;5(14):6672-7. doi: 10.1021/am401442v. Epub 2013 Jul 1.
In this paper, we have demonstrated a hierarchical architecture assembly from Sn-filled CNTs, which was in situ deposited on Cu foils to form binder-free electrode by incorporating flame aerosol deposition (FAD) with chemical vapor deposition (CVD) processes. The reversible capacity of Sn-filled CNTs hierarchical architecture anode exhibited above 1000 mA h g(-1) before 30th cycle and stabilized at 437 mA h g(-1) after 100 cycles at a current density of 100 mA g(-1). Even at as high as 2 A g(-1), the capacity still maintained 429 mA h g(-1). The desirable cycling life and rate capacities performance were attributed to great confinement of tin in the interior of CNTs and the superior conducting network constructed by the 3D hierarchical architecture. The novel, rapid and scalable synthetic route was designed to prepare binder-free electrode with high electrochemical performance and avoid long-time mixing of active materials, binder, and carbon black, which is expected to be one of promising preparation of Sn/C anodes in lithium-ion batteries.
在本文中，我们展示了一种由填充锡的碳纳米管组成的分层结构的组装体，它通过将火焰气溶胶沉积（FAD）与化学气相沉积（CVD）工艺相结合，原位沉积在铜箔上，形成无粘结剂电极。填充锡的碳纳米管分层结构阳极的可逆容量在第 30 次循环前超过 1000 mA h g(-1)，在 100 mA g(-1)的电流密度下循环 100 次后稳定在 437 mA h g(-1)。即使在高达 2 A g(-1)的电流密度下，容量仍保持在 429 mA h g(-1)。良好的循环寿命和倍率性能归因于锡在碳纳米管内部的良好限制和由 3D 分层结构构建的优越导电网络。该新颖、快速且可扩展的合成路线旨在制备具有高电化学性能的无粘结剂电极，并避免活性材料、粘结剂和炭黑的长时间混合，有望成为锂离子电池中 Sn/C 阳极的一种有前途的制备方法。
Zotero 插件