期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 43, 页码 39991-39997出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b13629
关键词
iron sulfides; surface anionization; capacitive storage; lithium-ion battery; sodium -ion battery
资金
- National Natural Science Foundation of China [51902158, 51872139, 21501091]
- Natural Science Foundation of Jiangsu Higher Education Institutions [19KJB430002]
- NSF of Jiangsu Province [BK20170045, BK20150064]
- Recruitment Program of Global Experts [1211019]
- Six Talent Peak Project of Jiangsu Province [XCL-021, XCL-043]
- National Key Basic Research Program of China [2015CB932200]
Due to the ever-growing demand for costeffective batteries toward greener and sustainable applications, continuous effort has been devoted to tailoring the interfacial kinetics of electrode materials. Herein, surface anionization has been introduced for the hierarchical assembly of iron sulfides on three-dimensional (3D) graphene foam (denoted FeS2@3DGF and FeS@3DGF). The surface -anchored sulfate species provide ideal electroactive sites, which is correlated with enhanced capacitive contribution and boosted energy storage. Consequently, remarkable rate capability and stable cyclability can be achieved in alkaline -metal-ion batteries. Specifically, FeS@3DGF displays superb cycling stability when evaluated as anodes for Li -ion batteries (a steady capacity of 1109 mAh CI after 200 cycles at 200 mA g-1). Moreover, superior rate capability can be achieved for Na-ion batteries (203 mAh at 10 000 mA g-'). These findings provide new insights into reinforcing interface kinetics during electrochemical processes and hold great promise for versatile applications in the future.
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