Journal
CARBON
Volume 132, Issue -, Pages 323-328Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2018.02.056
Keywords
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Funding
- National Natural Science Foundation of China [21776309]
- Science Foundation of China University of Petroleum, Beijing [C201603]
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Carbon nanotubes (CNTs) with large length-diameter ratios and high conductivity are ideal to fabricate conductive networks in cathodes for Li ion batteries. However, good dispersion of CNTs in cathodes remains great challenge. Here, a CNT suspension containing an ultra-low concentration (0.2 wt%) of vertically-aligned CNTs (VACNTs) is used to construct a well-dispersed conductive network in cathodes. The VACNTs exhibit excellent dispersion stability in N-methyl pyrrolidone due to less entangling between CNTs. Significant promotion in specific capacities and low temperature performance have been achieved by adding highly-dispersed VACNTs into LiFePO4 cathodes. (c) 2018 Elsevier Ltd. All rights reserved.
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