Journal
MATERIALS LETTERS
Volume 255, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2019.126558
Keywords
Composite materials; Energy storage and conversion; Zinc-Nickel secondary battery; Zinc-Aluminum layered double hydroxide; Electrochemical performance
Funding
- Natural Science Foundation of China [21371180]
- Hunan Provincial Science and Technology Plan Project [2017TP1001]
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In this work, the zinc-aluminum layered double hydroxide grown on the substrate of graphene and polypyrrole composite (Zn-Al LDHs/GP) was prepared by in-situ growth method, and evaluated as anode materials of Zn-Ni secondary batteries. The results indicate that the Zn-Al LDHs/GP electrode has the smallest peak potential difference (0.452 V), the lowest charge transfer resistance and the superior cycling performance. Compared to the normal Zn-Al LDHs, charge transfer resistance of Zn-Al LDHs/GP electrode is reduced by 6.65 Omega. Moreover, the specific capacity of the Zn-Al LDHs/GP electrode is still remained at 350.0 mAh g(-1) after 1000 cycles, with a retention rate of 91.5% and it exhibits better rate capability. (C) 2019 Elsevier B.V. All rights reserved.
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