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On the Origin of the Extra Electrochemical Capacity Displayed by MO/Li Cells at Low Potential
Abstract
We report that the room temperature cycling of CoO/Li cells involving two processes, the reduction of CoO → Co 0 and the growth of a polymer/gel-like film at high and low potentials, respectively, is extremely sensitive to cycling voltage ranges with the best results obtained when the cells are fully discharged. The low-voltage process is quite reversible over the 0.02 to 1.8 V range with a sustained capacity of about 150 mAh/g over a few hundred cycles. Within such a range of potential the polymer/gel-like is barely evolving while it vanishes as the oxidation potential is increased above 2 V. From the cyclic-voltammogram profiles we conclude that the origin of the low-voltage capacity is nested in the pseudocapacitive character of the in situ made polymeric/gel film. Tentative explanations based on comparisons with existing literature are made to explain such an unusual finding. © 2002 The Electrochemical Society. All rights reserved.
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Cited by
Luo, J., Liu, J., Zeng, Z., Ng, C. F., Ma, L., Zhang, H., Lin, J., Shen, Z., & Fan, H. J. (2013) · Nano Letters · doi:10.1021/nl403461n · Cited by 773
Li, J., Xiong, S., Liu, Y., Ju, Z., & Qian, Y. (2013) · ACS Applied Materials & Interfaces · doi:10.1021/am3026294 · Cited by 759
Liu, W., Liu, P., & Mitlin, D. (2020) · Advanced Energy Materials · doi:10.1002/aenm.202002297 · Cited by 687
Nanostructured Fe3O4/SWNT Electrode: Binder‐Free and High‐Rate Li‐Ion Anode
Ban, C., Wu, Z., Gillaspie, D. T., Chen, L., Yan, Y., Blackburn, J. L., & Dillon, A. C. (2010) · Advanced Materials · doi:10.1002/adma.200904285 · Cited by 580
Conversion Reaction‐Based Oxide Nanomaterials for Lithium Ion Battery Anodes
Yu, S., Lee, S. H., Lee, D. J., Sung, Y., & Hyeon, T. (2016) · Small · doi:10.1002/smll.201502299 · Cited by 499
Metadata
- Authors
- Laruelle, S., Grugeon, S., Poizot, P., Dollé, M., Dupont, L., & Tarascon, J.-M.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2002
- Volume
- 149
- Issue
- 5
- Pages
- A627
- ISSN
- 0013-4651 (ISSN-L)
- OpenAlex
- W2073751755
- Cited by
- 1,211
- References
- 0
- FWCI
- 8.06
- Type
- journal article
- Language
- en
- Open access
- closed
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- Laruelle, S., Grugeon, S., Poizot, P., Dollé, M., Dupont, L., & Tarascon, J.-M. (2002). On the Origin of the Extra Electrochemical Capacity Displayed by MO/Li Cells at Low Potential. Journal of The Electrochemical Society. https://doi.org/10.1149/1.1467947
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