Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 38, Pages 19427-19432Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta04680g
Keywords
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Funding
- National Basic Research Program of China [2013CB934103]
- International Science & Technology Cooperation Program of China [2013DFA50840]
- NSF of China [51272197, 51302128]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing [2013-ZD-7]
- NSF of Henan province [14B140009]
- program for Youth Scholar teachers Supporting Plan in universities of Henan province [2013GGJS-189]
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Layered silicate is a new type of electrode material with high reversible capacity. However, its poor electrical conductivity leads to rapid capacity decay. To solve this problem, reduced graphene oxide (RGO) wrapped nickel silicate (NiSiO) hollow spheres are successfully synthesized. The hollow structure provides sufficient free space to accommodate the volume variation during lithiation/de-lithiation and the RGO improves the electrical conductivity. The resulting NiSiO/RGO delivers a capacity of 400 mA h g(-1) at 500 mA g(-1) after 1000 cycles, making the NiSiO/RGO composite a promising anode material for lithium-ion batteries.
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