期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 216, 期 -, 页码 58-63出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2018.05.054
关键词
Iron trioxide; Nitrogen-doped carbon matrix; Oxygen-bridge bonds; Anode; Sodium-ion batteries
资金
- National Natural Science Foundation of China [51622406, 21673298, 21473258]
- Grants from the Project of Innovation Driven Plan in Central South University [2016CX020, 2017CX004]
- National Key Research and Development Program of China [2017YFB0102000, 2018YFB0104200]
- Huna Provincial Natural Science Foundation of China [2018113633]
- China Postdoctoral Science Foundation [2017M6203552]
- National Postdoctoral Program for Innovative Talents [BX00192]
- Hunan Provincial Science and Technology Plan Project [2017TP1001]
By reason of rich sodium resources, sodium-ion batteries have excited enormous consideration for adhibition in the developing energy-storage stations. And not surprisingly, the exploration of cost-effective anode materials for SIBs have been a conspicuous topic. Herein, iron trioxide embedded in the nitrogen-doped carbon matrix with strong oxygen-bridge bonds is synthesized by using the iron based metal organic framework as template. The obtained composite delivers excellent electrochemical properties, such as specific capacity of 473.7 mAh g(-1) at the current density of 100 mA g(-1) after 100 cycles. Besides, the reversible capacity still remains at 155.3 mAh g(-1) at the high density of 4000 mA g(-1). This remarkable sodium-ion storage capability could be attributed to the incorporation of nitrogen atoms into carbon matrix and the strong chemical bonds between iron trioxide and carbon matrix, which can restrain electrode pulverization and also retain an interparticle connection even after long cycling that could offer a good electronic conductive pathway. This engineer strategy for preparing iron trioxide possess strong interfacial interaction with nitrogen-doped carbon matrix can be applied to other metal phosphides and metal oxide materials.
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