Extremely Durable High-Rate Capability of a LiNi0.4Mn0.4Co0.2O2 Cathode Enabled with Single-Walled Carbon Nanotubes

被引：82

作者：

Ban, Chunmei ^{[1
]}

Li, Zheng ^{[2
]}

Wu, Zhuangchun ^{[1
]}

Kirkham, Melanie J. ^{[3
]}

Chen, Le ^{[1
]}

Jung, Yoon Seok ^{[1
]}

Payzant, E. Andrew ^{[3
]}

Yan, Yanfa ^{[1
]}

Whittingham, M. Stanley ^{[2
]}

Dillon, Anne C. ^{[1
]}

机构：

[1] Natl Renewable Energy Lab, Golden, CO 80401 USA

[2] SUNY Binghamton, Inst Mat Res, Binghamton, NY 13902 USA

[3] Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37381 USA

来源：

ADVANCED ENERGY MATERIALS | 2011年 / 1卷 / 01期

关键词：

ELECTROCHEMICAL-BEHAVIOR; STORAGE CHARACTERISTICS; LITHIUM INTERCALATION; COMPOSITE ELECTRODES; LI(NI1/3CO1/3MN1/3)O-2; PERFORMANCE; STABILITY; BATTERIES; LICOO2; SAFETY;

D O I：

10.1002/aenm.201000001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A binder-free LiNi 0.4Mn 0.4Co 0.2O 2 cathode fabricated with 5 wt.% single-walled carbon nanotubes (SWNTS) shows excellent cycling performance at rates of 10C (Charge/discharge in 6 minutes). In contrast, a LiNi 0.4Mn 0.4Co 0.2O 2 electrode prepared by conventional methods without SWNTs has a significantly lower capacity. Based on the morphology and structural analysis, this exceptional rate capability is due to highly intimate contact between the long crystalline SWNT ropes and the active cathode material, ensuring fast diffusion of ions and electrons during cycling and resulting in sustainable capacity at high rates for 500 cycles.

引用

页码：58 / 62

页数：5

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