Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/64531
Title: Ni@NiO core/shell dendrites for ultra-long cycle life electrochemical energy storage
Authors: Liu, Y
Fu, NQ
Zhang, GG
Lu, W
Zhou, LM 
Huang, HT 
Issue Date: 2016
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry A, 2016, v. 4, no. 39, p. 15049-15056 How to cite?
Journal: Journal of materials chemistry A 
Abstract: A dendritic Ni@NiO core/shell electrode (DNE) is successfully fabricated by electrodeposition in a Ni-free electrolyte, with a Ni anode providing Ni ions through dissolution and diffusion. The unique structure is ideal for electrochemical energy storage since the dendrites provide a large surface area for easy electrolyte infiltration; the metal core improves the electrode conductivity with a shortened ion diffusion path, and the metal oxide shell is active for faradaic charge storage. As a result, the synthesized DNE demonstrates a high specific capacitance of 1930 F g(-1) and a high areal capacitance of 1.35 F cm(-2), with super-long cycle stability. The gravimetric capacitance of the DNE hardly shows any decay after 70 000 cycles at a scan rate of 100 mV s(-1). It was also demonstrated that our electrodeposition method in a source-free electrolyte is universal to deposit dendritic Ni-compounds on many other types of substrates, versatile for different applications.
URI: http://hdl.handle.net/10397/64531
ISSN: 2050-7488
EISSN: 2050-7496
DOI: 10.1039/c6ta05508g
Rights: The article is licensed under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) <https://creativecommons.org/licenses/by-nc/3.0/>
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