Black mesoporous Li4Ti5O12−δ nanowall arrays with improved rate performance as advanced 3D anodes for microbatteriesстатья

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 декабря 2016 г.

Работа с статьей


[1] Black mesoporous li4ti5o12−δ nanowall arrays with improved rate performance as advanced 3d anodes for microbatteries / Q. Xia, N. Jabeen, S. V. Savilov et al. // Journal of Materials Chemistry A. — 2016. — no. 4. — P. 17543–17551. Binder-free and self-standing lithium titanate nanoarrays could be promising 3D anodes for lithium-ion microbatteries. The intrinsic poor electrical conductivity of Li4Ti5O12, however, spoils its rate performance and restrains its application in commercial batteries. In this work, black mesoporous Li4Ti5O12−δ nanowall arrays with oxygen vacancies are synthesized by a facile hydrothermal method with post heat treatment in an Ar atmosphere. The heat treatment in an inert atmosphere is effective for generating oxygen vacancies by forming Ti3+ ions in Li4Ti5O12−δ nanowall arrays, thus greatly enhancing the electron transfer in the spinel structure. Consequently, the black mesoporous Li4Ti5O12−δ nanowall arrays exhibit greatly improved electrode kinetics and rate performance compared to the stoichiometrical Li4Ti5O12 and Li4Ti5O12/TiO2 dual phase nanowall arrays. In specific, the black mesoporous Li4Ti5O12−δ nanowall arrays can deliver a large specific capacity of about 115 mA h g−1 at 20C as well as excellent cycling stability, making them promising as 3D anodes for advanced lithium-ion microbatteries. [ DOI ]

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