Extremely durable high-rate capability of a LiNi 0.4Mn 0.4Co 0.2O 2 cathode enabled with single-walled carbon nanotubes

Chunmei Ban, Zheng Li, Zhuangchun Wu, Melanie J. Kirkham, Le Chen, Yoon Seok Jung, E. Andrew Payzant, Yanfa Yan, M. Stanley Whittingham, Anne C. Dillon

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)58-62
Number of pages5
JournalAdvanced Energy Materials
Volume1
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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