Small quantities of cobalt deposited on tin oxide as anode material to improve performance of lithium-ion batteries.
In this report, we present a hybrid structure involving a small quantity of Co element uniformly deposited on porous SnO(2) spheres as stable and high capacity anode materials for lithium-ion batteries. Specifically, Co element deposited on SnO(2) nanomaterials exhibited an exceptional reversible capacity of 810 mA h g(-1) after 50 cycles which is higher than the pure SnO(2) electrode. Based on the experiments results, a possible mechanism for the change of this structure during lithium ion insertion/extraction was proposed. The minute quantity of Co element uniformly deposited on SnO(2) spherical structure could prevent Sn aggregation during charging-discharging, and high porosity of the spherical structure allowed the volume expansion during lithium ion alloying/dealloying. The SnO(2) deposited with small quantities of Co element as electrode facilitated improved performance of lithium ion batteries with higher energy densities.
Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, People's Republic of China.
Lin
L
Mei
Chengchao
C
Li
Baihua
B
Qu
Ming
M
Zhang
Cheng
C
Xu
Danni
D
Lei
Yuejiao
Y
Chen
Zhi
Z
Xu
Libao
L
Chen
Qiuhong
Q
Li
Taihong
T
Wang