In-Situ Reduction Derived Nitrogen Doped Carbon Anchored Cobalt Nanoparticles as Highly Capacity and Long Life Lithium Ion Battery Anodes
Journal of Materials Science: Materials in Electronics
A novel composite with embedded cobalt nanoparticles in nitrogen doped carbon (Co@NDC) is synthesized by the in-situ reduction of Co(OH)2 using ionic liquid [HMIm]N(CN)2 as carbon precursor. Due to the special structure, this composite can form more stable solid electrolyte interface (SEI) film than cobalt nanoparticles when used as anode. The Co@NDC electrode shows a high discharge capacity of 1322 mAh g−1 after 850 cycles at 0.5 C, and an extremely long cycle life (436 mAh g−1 after 2400 cycles at 5 C). This excellent electrochemical performance can be attributed to the catalytic lithium-carbon reaction of cobalt nanoparticles, high conductivity of the carbon material, and the thin and stable SEI film.
Xiao, Mingjun, Yanshuang Meng, Gongrui Wang, Chaoyu Duan, Fuliang Zhu, Yue Zhang.
"In-Situ Reduction Derived Nitrogen Doped Carbon Anchored Cobalt Nanoparticles as Highly Capacity and Long Life Lithium Ion Battery Anodes."
Journal of Materials Science: Materials in Electronics, 29 (23): 19932-19941.
doi: 10.1007/s10854-018-0123-9 source: https://link.springer.com/article/10.1007%2Fs10854-018-0123-9