Journal
JOURNAL OF POWER SOURCES
Volume 301, Issue -, Pages 78-86Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.09.101
Keywords
Sandwich-like; Graphitized carbon; NiO; Nanoparticles; Li-ion battery
Funding
- Thousand Young Talents Program of Chinese Central Government [0220002102003]
- National Natural Science Foundation of China (NSFC) [21373280, 21403019]
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- Fundamental Research Funds for Central Universities [0301005202017]
- Hundred Talents Program at Chongqing University [0903005203205]
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In this contribution, the novel 2D sandwich-like NiO/C arrays on Ti foil are successfully designed and fabricated for the first time via simple and controllable hydrothermal process. In this strategy, we use green glucose as carbon source and ultrathin Ni(OH)(2) nanosheet arrays as precursor for NiO nano-particles and sacrificial templates for coupled graphitized carbon layers. This advanced sandwiched composite can not only provide large surface area for numerous active sites and continuous contact between active materials and electrolyte, but also protect the active nanoparticles from aggregation, pulverization and peeling off from conductive substrates. Furthermore, the porous structure derived from lots of substances loss under high-temperature calcinations can effectively buffer possible volume expansion and facilitate ion transfer. In this article, sandwiched NiO/C arrays, utilized as anode for LIBs, demonstrated high specific capacity (similar to 1458 mAh g(-1) at 500 mA g(-1)) and excellent rate performance and cyclablity (similar to 95.7% retention after 300 cycles). (C) 2015 Elsevier B.V. All rights reserved.
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