测定Li^+扩散系数的几种电化学方法

Several electrochemical methods for measurement of chemical diffusion coefficient of lithium-ion

介绍了测定锂离子电池正、负极材料中锂离子扩散系数的电化学方法。重点对交流阻抗技术(AC)、电位阶跃技术(PSCA)、恒电流间隙滴定技术(GITT)和电流脉冲驰豫技术(CPR)的特点进行了比较和讨论。

The electrochemical methods for measuring the chemical diffusion coefficient of lithium-ion in cathode and anode materials of lithium-ion batteries such as the AC-impedance, the potential step chronoamperometry method （ PSCA ）, the galvamostatic intermittent titration technique（ GITT ） and the current pulse relaxation method（ CPR ） were reviewed. The emphases were put on the evaluation, comparison and discussion of these electrochemical methods.