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A General and Mild Approach to Controllable Preparation of Manganese‐Based Micro‐ and Nanostructured Bars for High Performance Lithium‐Ion Batteries
Author(s) -
Ma Guo,
Li Sheng,
Zhang Weixin,
Yang Zeheng,
Liu Shulin,
Fan Xiaoming,
Chen Fei,
Tian Yuan,
Zhang Weibo,
Yang Shihe,
Li Mei
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201511196
Subject(s) - materials science , reagent , lithium (medication) , precipitation , solvent , manganese , nanotechnology , electrode , chemical engineering , oxide , battery (electricity) , chemistry , power (physics) , organic chemistry , metallurgy , medicine , physics , quantum mechanics , meteorology , engineering , endocrinology
One‐dimensional (1D) micro‐ and nanostructured electrode materials with controllable phase and composition are appealing materials for use in lithium‐ion batteries with high energy and power densities, but they are challenging to prepare. Herein, a novel ethanol–water mediated co‐precipitation method by a chimie douce route (synthesis conducted under mild conditions) has been exploited to selectively prepare an extensive series of manganese‐based electrode materials, manifesting the considerable generalizability and efficacy of the method. Moreover, by simply tuning the mixed solvent and reagents, transition metal oxide bars with differing aspect ratios and compositions were prepared with an unprecedented uniformity. Application prospects are demonstrated by Li‐rich 0.5 Li 2 MnO 3 ⋅0.5 LiNi 1/3 Co 1/3 Mn 1/3 O 2 bars, which demonstrate excellent reversible capacity and rate capability thanks to the steerable nature of the synthesis and material quality. This work opens a new route to 1D micro‐ and nanostructured materials by customizing the precipitating solvent to orchestrate the crystallization process.