Journal
ELECTROCHIMICA ACTA
Volume 215, Issue -, Pages 500-505Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.08.070
Keywords
hollow structure; layered double hydroxide; acidic etching; supercapacitor
Categories
Funding
- Key Project of Chinese National Programs for Research and Development [2016YFC0203800]
- Assembly Foundation of the Industry and Information Ministry of the People's Republic of China [543]
- National Natural Science Foundation of China [51408309, 51578288]
- Science and Technology Support Program of Jiangsu Province [BE2014713]
- Natural Science Foundation of Jiangsu Province [BK20140777, BK20160834]
- Industry-Academia Cooperation Innovation Fund Projects of Jiangsu Province [BY2014004-10]
- Science and technology project of Nanjing [201306012]
- Jiangsu Province Scientific and Technological Achievements into a Special Fund Project [BA2015062]
- Top-notch Academic Programs of Jiangsu Higher Education Institutions
- Priority Academic Program Development of Jiangsu Higher Education of Jiangsu Higher Education Institutions
- 59th Chinese Postdoctoral Science Foundation [2016M591850]
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It has been well accepted that the performance of supercapacitor material highly depends on its morphology, thus the control on morphology is significant for acquiring advanced materials. Herein, a facile method for controllable synthesis of nickel-cobalt layered double hydroxide (Ni-Co LDH) with a unique hollow structure is presented. In which zeolitic imidazolate framework-67 (ZIF-67) nanocrystals are used as templates and etched in a nitrate solution. The morphology of Ni-Co LDH shows an interesting variation with a different dosage of Ni(NO3)(2). The Ni-Co LDH with integrated hollow structure exhibits superior electrochemical property among the obtained materials. The electrochemical tests revealed that the electrode display a specific capacity of 790 C g(-1) at 2 A g(-1) and a favourable rate capability. The integrated polyhedral hollow structure and the interlaced nanosheets make the Ni-Co LDH a highly promising material for hybrid supercapacitors. (C) 2016 Elsevier Ltd. All rights reserved.
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