期刊
APPLIED SURFACE SCIENCE
卷 464, 期 -, 页码 472-478出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2018.09.115
关键词
Synthesis; Hedgehog-like ZnO; Lithium ion batteries; Nanostructure
类别
资金
- National Natural Science Foundation of China [21806129, 51872238, 51407134]
- China Postdoctoral Science Foundation [2016M590619]
- Natural Science Foundation of Shandong Province [ZR2016EEQ28]
- Fundamental Research Funds for the Central Universities [3102018zy045]
- Natural Science Basic Research Plan in Shaanxi Province of China [2017JQ5116]
- Qingdao Postdoctoral Application Research Project
- State Key Laboratory of Electrical Insulation and Power Equipment [EIPE14107]
- Thousand Talents Plan
- World-Class University and Discipline
- Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province
- World-Class Discipline Program of Shandong Province
- [51521065]
Herein, uniform mull-shelled ZnO hollow spheres were synthesized, especially hedgehog-like and triple-shelled ZnO hollow spheres were synthesized for the first time by a simple hydrothermal method capable of controlling the number of internal multishells, which are achieved by controlling the calcination process. Used as anodes for lithium ion batteries, the hedgehog-like ZnO hollow spheres show excellent rate capacity, good cycling performance, and high initial specific capacity. A superior capacity, up to 109 mAh g(-1) with minimal irreversible capacity (i.e., coulomb efficiency of 99.1%) after 100 cycles is achieved at a current rate of 100 mA g(-1), and a capacity of 98.8 mAh g(-1) is obtained at a current rate of 1 A g(-1). However, a high discharge of 253.6 mA h g(-1) for the hedgehog-like ZnO hollow spheres can still be achieved when the current rate is reduced back to 100 mA g(-1).
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