青岛科技大学  English 
林健健
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教授 博士生导师  
硕士生导师  

教师拼音名称:linjianjian

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入职时间:2018-09-11

所在单位:化学与分子工程学院

学历:博士研究生

办公地点:四方校区第一实验楼216

性别:女

联系方式:19862229511

学位:工学博士

职称:教授

毕业院校:澳大利亚伍伦贡大学

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Hollow TiO<inf>2</inf> submicrospheres assembled by tiny nanocrystals as superior anode for lithium ion battery

关键字:Lithium-ion batteries;Anodes - Energy conversion - Nanocrystals - Stability - Temperature - Titanium dioxide - Transition metal oxides - Transition metals

摘要:Developing a facile and green methodology to prepare nanostructured transition metal oxides (TMD) formed by sub-10 nm nanocrystals for the electrochemical energy conversion and storage remains an important challenge. Herein, we present hollow TiO<inf>2</inf> submicrospheres, assembled by 10 nm units via a facile one-step, low-temperature hydrothermal strategy. When used as anodes for lithium ion batteries, the submicrospheres could exhibit excellent rate capabilities of 223, 153, 44 and 22 mA h g<sup>-1</sup> at 1C, 10C, 100C and 300C, respectively. More importantly, they demonstrated a long-term cycling performance and structural stability over 2000 cycles at 10C and even 300C. The superb performances mainly originate from the integration of distinct advantages of the well-defined hollow structures and tiny TiO<inf>2</inf> grains into a single component via the environmental friendly synthesis strategy.<br/> © 2019 The Royal Society of Chemistry.

卷号:7

期号:41

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