期刊
ADVANCED MATERIALS
卷 29, 期 29, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201700214
关键词
hollow phosphorus nanospheres; LIB and SIB anodes; porous shells; solvothermal method; wet-chemical synthesis
类别
资金
- National Natural Science Fund of China [91022033, 21201158, 21471142, 21521001]
- Specialized Research Fund for the Doctoral Program of Higher Education [20133402110047]
- National Key Research and Development Program of China [2016YFB0901500]
- Fundamental Research Funds for the Central Universities [WK2060190053]
Large-volume-expansion-induced material pulverization severely limits the electrochemical performance of red phosphorous (P) for energy-storage applications. Hollow nanospheres with porous shells are recognized as an ideal structure to resolve these issues. However, a chemical synthetic approach for preparing nanostructured red P is always of great challenge and hollow nanosphere structures of red P have not yet been fabricated. Herein, a wet solvothermal method to successfully fabricate hollow P nanospheres (HPNs) with porous shells via a gas-bubble-directed formation mechanism is developed. More importantly, due to the merits of the porous and hollow structures, these HPNs reveal the highest capacities (based on the weight of electrode materials) of 1285.7 mA h g(-1) for lithium-ion batteries and 1364.7 mA h g(-1) for sodium-ion batteries at 0.2 C, and excellent long-cycling performance.
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