期刊
RSC ADVANCES
卷 4, 期 34, 页码 17483-17489出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra00877d
关键词
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资金
- National Natural Science Foundation of China [41272064]
- Guangxi Zhuang Autonomous Region of China [200103YB061, 201010LX188]
- PolyU's Postdoctoral Dean Reserve Project [1-ZV9F]
- Department of Education
Bismuth oxide (alpha-Bi2O3) microribbons are prepared from a precursor of Bi(C2H4) OH (BICH) with a ribbon shape. The as-prepared BICH is obtained through a facile hydrothermal procedure of the mixture of bismuth nitrate and oxalic acid aqueous solution. XRD, FESEM, TEM and TG-DTG are used to characterize the BICH. The obtained BICH precursor consists of a one-dimensional crystal structure, and has a width of 1 to 2 mm, a thickness of 200 to 400 nm, and a length of 5 to 20 mm. The thermal decomposition of the BICH microribbons leads to the formation of a well-defined Bi2O3 microribbon structure without morphology changes. Compared to commercial Bi2O3 powder, the as-prepared Bi2O3 acting as an anode of lithium-ion batteries (LIBs) shows a higher capacity of about 1047 mA h g(-1) at 150 mA g (1) after the 100th cycle. The good performance of the Bi2O3 microribbons can be attributed to better charge transfer properties, and shorter lithium-ion diffusion path. Owing to their excellent cyclability and rate performance, the Bi2O3 microribbons may become promising candidates for highperformance LIB applications in the future.
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