Structural engineering of porous N-doped carbon-coated Fe3O4 framework by controlling coordination for superior lithium-ion full-cell
Structural engineering of porous N-doped carbon-coated Fe3O4 framework by controlling coordination for superior lithium-ion full-cell
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DOI：
10.1016/j.apsusc.2020.146639
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发表时间：
2020-10
影响因子：
6.7
通讯作者：
Zhikang Liu;Lei Liu;Zhenghui Zhao;Jianhui He;Shan Wang;C. Xiong
中科院分区：
文献类型：
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作者：
Zhikang Liu;Lei Liu;Zhenghui Zhao;Jianhui He;Shan Wang;C. Xiong
The rational design of a proper electrode structure with high-performance and low cost still remains a significant challenge for developing advanced energy storage systems. Herein, we report a coordination-induced interlinked and porous N-doped carbon-coated Fe3O4(Fe3O4@N-C) framework based on the Fe-based metal-organic frameworks (MOFs). The controlled coordination can not only provide the in-situ N-doping, but also generate the richer porous interlinked carbon framework, the superiority of the surface structure from the Fe3O4@N-C remarkably improves the transport performance of Li+and electron. As a result, a specific capacity of 724 mAh g−1at 0.5 A g−1and a long-life stability for 300 cycles at 5 A g−1for half-cell can be obtained due to the more stable carbon framework. Importantly, the assembled full-cell also delivers a delightful performance with a specific capacity of 550 mAh g−1at 0.5 A g−1after 50 cycles. This controllably structural engineering by 2-methylimidazole assisted-coordination provides a simple approach to fabricate the high-performance nanopolyhedra towards the practical LIBs.
