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Pseudocapacitance of MXene nanosheets for high-power sodium-ion hybrid capacitors
Open accessAbstract
High-power Na-ion batteries have tremendous potential in various large-scale applications. However, conventional charge storage through ion intercalation or double-layer formation cannot satisfy the requirements of such applications owing to the slow kinetics of ion intercalation and the small capacitance of the double layer. The present work demonstrates that the pseudocapacitance of the nanosheet compound MXene Ti 2 C achieves a higher specific capacity relative to double-layer capacitor electrodes and a higher rate capability relative to ion intercalation electrodes. By utilizing the pseudocapacitance as a negative electrode, the prototype Na-ion full cell consisting of an alluaudite Na 2 Fe 2(SO 4)3 positive electrode and an MXene Ti 2 C negative electrode operates at a relatively high voltage of 2.4 V and delivers 90 and 40 mAh g−1 at 1.0 and 5.0 A g−1 (based on the weight of the negative electrode), respectively, which are not attainable by conventional electrochemical energy storage systems.
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Cited by
Two-Dimensional, Ordered, Double Transition Metals Carbides (MXenes)
Anasori, B., Xie, Y., Beidaghi, M., Lu, J., Hosler, B. C., Hultman, L., Kent, P. R. C., Gogotsi, Y., & Barsoum, M. W. (2015) · ACS Nano · doi:10.1021/acsnano.5b03591 · Cited by 2,110
Two-Dimensional Ultrathin MXene Ceramic Nanosheets for Photothermal Conversion
Lin, H., Wang, X., Yu, L., Chen, Y., & Shi, J. (2017) · Nano Letters · doi:10.1021/acs.nanolett.6b04339 · Cited by 1,314
Self-citationElectrochemical etching of Ti2AlC to Ti2CTx (MXene) in low-concentration hydrochloric acid solution
Sun, W., Shah, S. A., Chen, Y., Tan, Z., Gao, H., Habib, T., Radovic, M., & Green, M. J. (2017) · J. Mater. Chem. A · doi:10.1039/c7ta05574a · Cited by 854
Electromagnetic absorption materials: Current progress and new frontiers
Lv, H., Yang, Z., Pan, H., & Wu, R. (2022) · Progress in Materials Science · doi:10.1016/j.pmatsci.2022.100946 · Cited by 837
Ma, Y., Liu, N., Li, L., Hu, X., Zou, Z., Wang, J., Luo, S., & Gao, Y. (2017) · Nature Communications · doi:10.1038/s41467-017-01136-9 · Cited by 788
Metadata
- Authors
- Wang, X., Kajiyama, S., Iinuma, H., Hosono, E., Oro, S., Moriguchi, I., Okubo, M., & Yamada, A.
- Venue
- Nature Communications
- Published
- 2015-04-02
- Volume
- 6
- Issue
- 1
- Pages
- 6544-6544
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2037863567
- Cited by
- 1,145
- References
- 0
- FWCI
- 40.50
- Type
- journal article
- Language
- en
- Open access
- gold
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- Wang, X., Kajiyama, S., Iinuma, H., Hosono, E., Oro, S., Moriguchi, I., Okubo, M., & Yamada, A. (2015). Pseudocapacitance of MXene nanosheets for high-power sodium-ion hybrid capacitors. Nature Communications. https://doi.org/10.1038/ncomms7544
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