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Stabilized TiN Nanowire Arrays for High-Performance and Flexible Supercapacitors
Abstract
Metal nitrides have received increasing attention as electrode materials for high-performance supercapacitors (SCs). However, most of them are suffered from poor cycling stability. Here we use TiN as an example to elucidate the mechanism causing the capacitance loss. X-ray photoelectron spectroscopy analyses revealed that the instability is due to the irreversible electrochemical oxidation of TiN during the charging/discharging process. Significantly, we demonstrate for the first time that TiN can be stabilized without sacrificing its electrochemical performance by using poly(vinyl alcohol) (PVA)/KOH gel as the electrolyte. The polymer electrolyte suppresses the oxidation reaction on electrode surface. Electrochemical studies showed that the TiN solid-state SCs exhibit extraordinary stability up to 15,000 cycles and achieved a high volumetric energy density of 0.05 mWh/cm(3). The capability of effectively stabilizing nitride materials could open up new opportunities in developing high-performance and flexible SCs.
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Cited by
Metallic Nickel Nitride Nanosheets Realizing Enhanced Electrochemical Water Oxidation
Xu, K., Chen, P., Li, X., Tong, Y., Ding, H., Wu, X., Chu, W., Peng, Z., Wu, C., & Xie, Y. (2015) · Journal of the American Chemical Society · doi:10.1021/ja5119495 · Cited by 1,115
Self-citationTransition metal nitrides for electrochemical energy applications
Wang, H., Li, J., Li, K., Lin, Y., Chen, J., Gao, L., Nicolosi, V., Xiao, X., & Lee, J.-M. (2021) · Chemical Society Reviews · doi:10.1039/d0cs00415d · Cited by 983
Shi, Y., Pan, L., Liu, B., Wang, Y., Cui, Y., Bao, Z., & Yu, G. (2014) · J. Mater. Chem. A · doi:10.1039/c4ta00484a · Cited by 699
Polypyrrole-coated paper for flexible solid-state energy storage
Yuan, L., Yao, B., Hu, B., Huo, K., Chen, W., & Zhou, J. (2013) · Energy & Environmental Science · doi:10.1039/c2ee23977a · Cited by 623
Flexible electronics based on inorganic nanowires
Liu, Z., Xu, J., Chen, D., & Shen, G. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00116h · Cited by 512
Metadata
- Authors
- Lu, X., Wang, G., Zhai, T., Yu, M., Xie, S., Ling, Y., Liang, C., Tong, Y., & Li, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-09-07
- Volume
- 12
- Issue
- 10
- Pages
- 5376-5381
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2096683902
- Cited by
- 670
- References
- 0
- FWCI
- 20.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lu, X., Wang, G., Zhai, T., Yu, M., Xie, S., Ling, Y., Liang, C., Tong, Y., & Li, Y. (2012). Stabilized TiN Nanowire Arrays for High-Performance and Flexible Supercapacitors. Nano Letters. https://doi.org/10.1021/nl302761z
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