3D carbon framework-supported FeSe for high-performance potassium ion batteries. Issue 9 (27th July 2020)

• Record Type: Journal Article
• Authors: Deng, Jianhua; Huang, Xianglong; Gao, Wei; Liu, Hongdong; Xu, Maowen
• Is Part Of: Sustainable energy & fuels. Volume 4:Issue 9(2020)
• Page Start: 4807
• Page End: 4813
• Publication Date: 2020-07-27
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d0se00146e
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : FeSe@C with a 3D porous interconnected carbon framework is used as the anode for potassium ion batteries (PIBs). Abstract : FeSe@C with a 3D porous interconnected carbon framework is used as the anode for potassium ion batteries (PIBs). FeSe@C has a relatively large specific surface area and a superior microporous and mesoporous structure, thus facilitating the storage and transportation of potassium ions. When tested in PIBs as an anode, FeSe@C shows good specific capacity of 298.5 mA h g −1 after 200 cycles at 500 mA g −1, thus indicating good cycle stability. In addition, a possible potassium storage mechanism is explored. Moreover, the diffusion coefficient of potassium ions ( D K ) of FeSe@C is 1.67 × 10 −10 cm 2 s −1 is calculated. Therefore, the FeSe@C composite is expected to become the next-generation anode material for PIBs.