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TiN/VN composites with core/shell structure for supercapacitors |
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| Authors: | Shanmu Dong Xiao Chen Lin Gu Haibo Wang Pengxian Han Li Wang Liquan Chen |
| Affiliation: | a Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, PR China b WPI Advanced Institute for Materials Research, Tohoku University, Sendai 9808577, Japan c Qingdao University of Science and Technology, Qingdao 266101, PR China d Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | TiN/VN core-shell composites are prepared by a two-step strategy involving coating of commercial TiN nanoparticles with V2O5·nH2O sols followed by ammonia reduction. The highest specific capacitance of 170 F g−1 is obtained when scanned at 2 mV s−1 and a promising rate capacity performance is maintained at higher voltage sweep rates. These results indicate that these composites with good electronic conductivity can deliver a favorable capacity performance. |
| Keywords: | A. Composites B. Sol-gel chemistry C. Electron microscopy D. Electrochemical properties |
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