基于Fe/Co-MOF制备的高性能镍铁电池铁电极及其电化学性能

doi:10.11896/j.issn.1005-023X.2018.05.005

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Abstract Developing high performance iron electrodes is still a challenge for nickel-iron batteries. In this work, we reported a high-performance iron electrode material derived from Fe/Co-MOF for the first time. As shown by XRD, SEM and TEM analysis, octahedral particles consisted of Fe₃O₄ phase and trace Fe-Co alloy were obtained by calcining the Fe/Co-MOF precursor. The improved performance of this hybrid as anode materials for nickel-iron batteries in comparison with the Fe-MOF alone was due to the incorporation of an appropriate amount of Co. It showed a discharge plateau at about 1.18 V, which was slightly higher than Fe-MOF (1.10 V). Despite the sharp capacity loss in initial 10 cycles, a stable capacity of 233.1 mAh·g^-1 was obtained at a current density of 1.0 A·g^-1 after 90 cycles, which was about 181.2 mAh·g^-1 higher than that of Fe-MOF derived sample. The improved electrochemical properties may be attributed to the improved electronic conductivity and reduced ion transfer resistance.

Key words： Fe₃O₄ carbon composite metal organic framework nickel-iron battery anode material

Published: 10 March 2018 Online: 2018-03-10

CLC number:

TM912.9

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	Articles by authors
	ZHANG Hehe
	LI Fangfang
	WANG Haiyan
	PENG Zhiguang
	TANG Yougen

Cite this article:

ZHANG Hehe,LI Fangfang,WANG Haiyan, et al. Iron Electrode Derived from Fe/Co-MOF and Its Electrochemical Performance for Nickel-Iron Batteries[J]. Materials Reports, 2018, 32(5): 719-724.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.05.005 OR https://www.mater-rep.com/EN/Y2018/V32/I5/719

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