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In Situ Reactive Synthesis of Polypyrrole-MnO2 Coaxial Nanotubes as Sulfur Hosts for High-Performance Lithium–Sulfur Battery
Abstract
Lithium–sulfur batteries are considered as a promising candidate for high energy density storage applications. However, their specific capacity and cyclic stability are hindered by poor conductivity of sulfur and the dissolution of redox intermediates. Here, we design polypyrrole-MnO 2 coaxial nanotubes to encapsulate sulfur, in which MnO 2 restrains the shuttle effect of polysulfides greatly through chemisorption and polypyrrole serves as conductive frameworks. The polypyrrole-MnO 2 nanotubes are synthesized through in situ polymerization of pyrrole using MnO 2 nanowires as both template and oxidization initiator. A stable Coulombic efficiency of ∼98.6% and a decay rate of 0.07% per cycle along with 500 cycles at 1C-rate are achieved for S/PPy-MnO 2 ternary electrodes with 70 wt % of S and 5 wt % of MnO 2 . The excellent trapping ability of MnO 2 to polysulfides and tubular structure of polypyrrole with good flexibility and conductivity are responsible for the significantly improved cyclic stability and rate capability.
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Li-O2 and Li-S batteries with high energy storage
Bruce, P. G., Freunberger, S. A., Hardwick, L. J., & Tarascon, J.-M. (2012) · Nature Materials · doi:10.1038/nmat3191 · Cited by 9,479
Wang, Z., Dong, Y., Li, H., Zhao, Z., Bin Wu, H., Hao, C., Liu, S., Qiu, J., & Lou, X. W. (2014) · Nature Communications · doi:10.1038/ncomms6002 · Cited by 1,059
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Advances in Lithium–Sulfur Batteries: From Academic Research to Commercial Viability
Chen, Y., Wang, T., Tian, H., Su, D., Zhang, Q., & Wang, G. (2021) · Advanced Materials · doi:10.1002/adma.202003666 · Cited by 870
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He, J., Luo, L., Chen, Y., & Manthiram, A. (2017) · Advanced Materials · doi:10.1002/adma.201702707 · Cited by 521
Chen, T., Zhang, Z., Cheng, B., Chen, R., Hu, Y., Ma, L., Zhu, G., Liu, J., & Jin, Z. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b06973 · Cited by 502
Metadata
- Authors
- Zhang, J., Shi, Y., Ding, Y., Zhang, W., & Yu, G.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-10-17
- Volume
- 16
- Issue
- 11
- Pages
- 7276-7281
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2531406671
- Cited by
- 280
- References
- 2
- FWCI
- 24.70
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhang, J., Shi, Y., Ding, Y., Zhang, W., & Yu, G. (2016). In Situ Reactive Synthesis of Polypyrrole-MnO2 Coaxial Nanotubes as Sulfur Hosts for High-Performance Lithium–Sulfur Battery. Nano Letters. https://doi.org/10.1021/acs.nanolett.6b03849
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