Journal
RARE METALS
Volume 41, Issue 1, Pages 21-28Publisher
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-021-01835-9
Keywords
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Funding
- National Natural Science Foundation of China [21905239, U1910208]
- Natural Science Foundation of Shanxi Province of China [201901D211265, 201901D211257, 201901D111137, 201901D211208]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [2019L0609, 2019L0605]
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The special microstructure and superior performance of mesoporous FeS2 nanorods represent a critical step towards practical application of SIBs.
Sodium-ion batteries (SIBs), as highly promising alternatives to lithium-ion batteries (LIBs), can be widely used in a variety of next-generation energy storage systems. However, the current commercial graphite anodes of LIBs could not intercalate sodium ions to appreciable extent, and the electrochemical irreversibility hinders further application. Searching for a suitable anode material is a critical issue for the successful development of SIBs. Herein, we report a convenient, fast, and large-scale preparation method of mesoporous FeS2 nanorods. Our specially designed one-dimensional mesoporous structure of FeS2 takes full advantage of ultra-high strain relaxation as well as fast Na+ transport rate arising from microstructural characteristics. As a result, the mesoporous FeS2 nanorods exhibited excellent sodium storage performance. The discharge capacity was retained at 711.1 mAh center dot g(-1) after 450 cycles at a current density of 1000 mA center dot g(-1). The special microstructure and superior performance of mesoporous FeS2 nanorods represent a critical step for transition metal sulfides electrode materials toward practical SIBs application. Graphic abstract
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