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层状LiNi1/3Co1／3Mn1/3O2正极材料脱嵌锂的动力学研究 被引量：3

Study on Li deintercalation/intercalation kinetics behaviors of layered LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 material by EIS
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摘要 采用交流阻抗法对层状LiNi1/3Co1/3Mn1/3O2材料嵌/脱锂反应的动力学过程进行了研究,结果发现,该材料的交换电流密度和锂离子扩散系数均与嵌锂电位有关,交换电流密度在电位平台附近(3.9V)出现了最大值(1.03mA/cm2),而锂离子扩散系数却出现了最小值(1.23×10-12cm2/s)。 The kinetic behaviors related to Li deintercalation/intercalation process of layered LiNi1/3Co1/3Mn1/3O2 were studied by means of electrochemical impedance spectroscopy （EIS） measurements. The results show that the exchange current density （Jo） and chemical diffusion coefficient of lithium-ion （DLi＋） vary with delithiation voltage, and the max value （ 1.03 mA/cm^2 ）of exchange current density and the min value （ 1.23 × 10^-12 cm^2/s ） of diffusion coefficient （Du＋） are obtained near the voltage plat（ 3.9 V ）.
作者 禹筱元 余仕僖 刘海峰 胡国荣 刘业翔
机构地区 华南农业大学理学院 中南大学冶金科学与工程学院
出处 《电源技术》 CAS CSCD 北大核心 2009年第2期116-118,共3页 Chinese Journal of Power Sources
基金 广东省自然科学基金(06300397) 华南农业大学校长基金(K06143)
关键词 LiNi1/3Co1/3Mn1/3O2材料 交流阻抗法 动力学 交换电流密度 锂离子扩散系数 LiNi1/3Co1/3Mn1/3O2 cathode electrochemical impedance spectroscopy （EIS） kinetic behavior exchangecurrent density（J0） diffusion coefficient （DLi＋.）
分类号 TM912.9 [电气工程—电力电子与电力传动]
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共引文献43

同被引文献59

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电源技术
2009年 第2期

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