TY - JOUR
T1 - The surface capacitance behavior and its contribution to the excellent performance of cobalt ferrite/carbon anode in lithium storage
AU - Li, Yuzhu
AU - Meng, Yanshuang
AU - Xiao, Mingjun
AU - Liu, Xinglian
AU - Zhu, Fuliang
AU - Zhang, Yue
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Carbon coated CoFe2O4 (CFO/C) is synthesized with the polyvinylpyrrolidone as carbon source by using the hydrothermal and subsequent heat treatment. The particle size of the CFO (CFO/C) is less than 50 nm, which facilitates the transport of Li+. The CFO/C composite delivers reversible discharge specific capacity of 934.8, 790.5, 685.9, 524.6, and 418.7 mAh g−1 at current density of 0.2C, 0.5C, 1C, 3C, 5C, respectively. When the current density is 1C, the CFO/C composite maintains the reversible specific discharge capacity of 775.6 mAh g−1 after 380 cycles. The quantitative calculation of the Cyclic voltammetry (CV) shows that the total charge is derived from the contribution of both surface capacitance behavior and diffusion-controlled process during lithium storage, and the capacitance behavior plays a critical role in determining the rate performance and cycle stability.
AB - Carbon coated CoFe2O4 (CFO/C) is synthesized with the polyvinylpyrrolidone as carbon source by using the hydrothermal and subsequent heat treatment. The particle size of the CFO (CFO/C) is less than 50 nm, which facilitates the transport of Li+. The CFO/C composite delivers reversible discharge specific capacity of 934.8, 790.5, 685.9, 524.6, and 418.7 mAh g−1 at current density of 0.2C, 0.5C, 1C, 3C, 5C, respectively. When the current density is 1C, the CFO/C composite maintains the reversible specific discharge capacity of 775.6 mAh g−1 after 380 cycles. The quantitative calculation of the Cyclic voltammetry (CV) shows that the total charge is derived from the contribution of both surface capacitance behavior and diffusion-controlled process during lithium storage, and the capacitance behavior plays a critical role in determining the rate performance and cycle stability.
UR - http://www.scopus.com/inward/record.url?scp=85066848293&partnerID=8YFLogxK
U2 - 10.1007/s10854-019-01629-x
DO - 10.1007/s10854-019-01629-x
M3 - Article
AN - SCOPUS:85066848293
SN - 0957-4522
VL - 30
SP - 12659
EP - 12668
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 13
ER -