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Asynchronous reactions of "self-matrix" dual-crystals effectively accommodating volume expansion/shrinkage of
Youchen Hao1, Xifei Li, Wen Liu
1Institute of Advanced Electrochemical Energy & School of Materials Science and Engineering, Xi'an University of Technology, Xi'an, Shaanxi 710048, China.
Chemical Communications (Cambridge, England)
|July 18, 2019
Abstract:
The large volume expansion of FeS2 is successfully accommodated via a series of asynchronous redox reactions of dual-crystalline FeS2. Consequently, a durable sodium storage performance with a reversible capacity of 567.7 mA h g-1 is obtained at 0.1 A g-1 after 50 cycles. This novel strategy can also be utilized in other types of electrodes having large volume change upon cycling.