Pie-like electrode design for high-energy density lithium–sulfur batteries
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Li-2015-Pie-like electrode.pdf
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Author(s)
Zhang, Jin Tao
Chen, Yu Ming
Li, Ju
Lou, Xiong Wen (David)
Li, Zhen, M. Eng. Massachusetts Institute of Technology
Date Issued
November 2015
Journal
Nature Communications
Publisher
Nature Publishing Group
Citation
Li, Zhen, Jin Tao Zhang, Yu Ming Chen, Ju Li, and Xiong Wen (David) Lou. “Pie-Like Electrode Design for High-Energy Density Lithium–sulfur Batteries.” Nat Comms 6 (November 26, 2015): 8850. © 2015 Macmillan Publishers Limited
Version
Final published version
Abstract
Owing to the overwhelming advantage in energy density, lithium–sulfur (Li–S) battery is a promising next-generation electrochemical energy storage system. Despite many efforts in pursuing long cycle life, relatively little emphasis has been placed on increasing the areal energy density. Herein, we have designed and developed a ‘pie’ structured electrode, which provides an excellent balance between gravimetric and areal energy densities. Combining lotus root-like multichannel carbon nanofibers ‘filling’ and amino-functionalized graphene ‘crust’, the free-standing paper electrode (S mass loading: 3.6 mg cm[superscript −2]) delivers high specific capacity of 1,314 mAh g[superscript −1] (4.7 mAh cm[superscript −2]) at 0.1 C (0.6 mA cm[superscript −2]) accompanied with good cycling stability. Moreover, the areal capacity can be further boosted to more than 8 mAh cm[superscript −2] by stacking three layers of paper electrodes with S mass loading of 10.8 mg cm[superscript −2].
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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DOI of Published Version
https://doi.org/10.1038/ncomms9850
