引用本文:
黄峰, 詹晖, 周运鸿, 易德莲. 纳米SnO2负极的电化学性质[J]. 应用化学,
2007, 24(3): 268-272.
Citation: HUANG Feng, ZHAN Hu, ZHOU Yun-Hong, YI De-Lian. Electrochemical Study of Nano-SnO2 Anode[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 268-272.
Citation: HUANG Feng, ZHAN Hu, ZHOU Yun-Hong, YI De-Lian. Electrochemical Study of Nano-SnO2 Anode[J]. Chinese Journal of Applied Chemistry, 2007, 24(3): 268-272.
纳米SnO2负极的电化学性质
English
Electrochemical Study of Nano-SnO2 Anode
Abstract:
Slow scanning cyclic voltammetry was employed to study stainless steel electrode in different electrolytes, solvents and lithium-salt. The impedance diagrams of nano-SnO2 anode/electrolyte interphase at different discharge states were analyzed with alternative current impedance spectroscopy. The results suggest that nonaqueous electrolyte reacts also on the surface of a nano-SnO2 anode as in lithium rechargeable batteries during the initial charge/discharge cycles, and results in the partial irreversible capacity loss. The electrochemical reaction of nano-SnO2 anode for lithium rechargeable batteries can be deduced as follows:a passivating film forms on the surface of nano-SnO2 particles first, then Li+ ions pass through the surface film and react with nano-SnO2 to produce amorphous Li2O and to form fine grains of Li-Sn alloys in the core region underneath the passivation film.
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