The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.
Facile Synthesis of Nb2O5@Carbon Core–Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid Supercapacitors
Abstract
Hybrid supercapacitors (battery-supercapacitor hybrid devices, HSCs) deliver high energy within seconds (excellent rate capability) with stable cyclability. One of the key limitations in developing high-performance HSCs is imbalance in power capability between the sluggish Faradaic lithium-intercalation anode and rapid non-Faradaic capacitive cathode. To solve this problem, we synthesize Nb2O5@carbon core-shell nanocyrstals (Nb2O5@C NCs) as high-power anode materials with controlled crystalline phases (orthorhombic (T) and pseudohexagonal (TT)) via a facile one-pot synthesis method based on a water-in-oil microemulsion system. The synthesis of ideal T-Nb2O5 for fast Li(+) diffusion is simply achieved by controlling the microemulsion parameter (e.g., pH control). The T-Nb2O5@C NCs shows a reversible specific capacity of ∼180 mA h g(-1) at 0.05 A g(-1) (1.1-3.0 V vs Li/Li(+)) with rapid rate capability compared to that of TT-Nb2O5@C and carbon shell-free Nb2O5 NCs, mainly due to synergistic effects of (i) the structural merit of T-Nb2O5 and (ii) the conductive carbon shell for high electron mobility. The highest energy (∼63 W h kg(-1)) and power (16 528 W kg(-1) achieved at ∼5 W h kg(-1)) densities within the voltage range of 1.0-3.5 V of the HSC using T-Nb2O5@C anode and MSP-20 cathode are remarkable.
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Cited by
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Metadata
- Authors
- Lim, E., Jo, C., Kim, H., Kim, M.-H., Mun, Y., Chun, J., Ye, Y., Hwang, J., Ha, K.-S., Roh, K. C., Kang, K., Yoon, S., & Lee, J.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-06-24
- Volume
- 9
- Issue
- 7
- Pages
- 7497-7505
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2409015258
- Cited by
- 459
- References
- 45
- FWCI
- 15.95
- Type
- journal article
- Language
- en
- Open access
- closed
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- Lim, E., Jo, C., Kim, H., Kim, M.-H., Mun, Y., Chun, J., Ye, Y., Hwang, J., Ha, K.-S., Roh, K. C., Kang, K., Yoon, S., & Lee, J. (2015). Facile Synthesis of Nb2O5@Carbon Core–Shell Nanocrystals with Controlled Crystalline Structure for High-Power Anodes in Hybrid Supercapacitors. ACS Nano. https://doi.org/10.1021/acsnano.5b02601
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