期刊
RSC ADVANCES
卷 6, 期 89, 页码 86131-86136出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra17251b
关键词
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资金
- National Natural Science Foundation of China [51472271, 61376018, 51174233]
- Project for Innovation-Driven Planning in Central South University [2016CX002]
- Program for New Century Excellent Talents in University [NCET-12-0554]
- National Basic Research Program of China (973 Program) [2013CB932901]
Fast development of low-cost sodium ion batteries (SIBs) has boosted research efforts to identify proper anode materials, and now more attention is paid on carbon composites with better performance than simplex compounds. According to the explored different kinds of anode materials for SIBs in the past, only a few works are about transition metal nitrides. Herein a carbon-coated iron nitride was synthesized and applied for the first time in sodium ion batteries (SIBs), and the primary mechanism was detected via in situ XRD confirming Fe2N activity during discharge in SIBs. Fe2N nanoparticles as anodes in SIBs showed better stability than most of the materials reported in SIBs. The cycling performance of the synthesized coral-like Fe2N@C nanoparticles was significantly promoted compared to the pure nitride, and the improved performance of the carbon coated coral-like Fe2N suggests that more explorations about nitride electrode materials for SIBs are needed.
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