Pyrosynthesis of Na3V2(PO4)3@C Cathodes for Safe and Low-Cost Aqueous Hybrid Batteries
- Authors
- Islam, Saiful; Alfaruqi, Muhammad Hilmy; Putro, Dimas Yunianto; Mathew, Vinod; Kim, Sungjin; Jo, Jeonggeun; Kim, Seokhun; Sun, Yang-Kook; Kim, Kwangho; Kim, Jaekook
- Issue Date
- Jul-2018
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- batteries; carbon; hybrid; pyrosynthesis; sodium vanadium phosphate
- Citation
- CHEMSUSCHEM, v.11, no.13, pp.2239 - 2247
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMSUSCHEM
- Volume
- 11
- Number
- 13
- Start Page
- 2239
- End Page
- 2247
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3898
- DOI
- 10.1002/cssc.201800724
- ISSN
- 1864-5631
- Abstract
- Rechargeable hybrid aqueous batteries (ReHABs) have emerged as promising sustainable energy-storage devices because all components are environmentally benign and abundant. In this study, a carbon-wrapped sponge-like Na3V2(PO4)3 nanoparticle (NVP@C) cathode is prepared by a simple pyrosynthesis for use in the ReHAB system with impressive rate capability and high cyclability. A high-resolution X-ray diffraction study confirmed the formation of pure Na ion superionic conductor (NASICON) NVP with rhombohedral structure. When tested in the ReHAB system, the NVP@C demonstrated high rate capability (66 mAh g−1 at 32 C) and remarkable cyclability over 1000 cycles (about 72 % of the initial capacity is retained at 30 C). Structural transformation and oxidation change studies of the electrode evaluated by using in situ synchrotron X-ray diffraction and ex situ X-ray photoelectron spectroscopy, respectively, confirmed the high reversibility of the NVP@C electrode in the ReHAB system through a two-phase reaction. The combined strategy of nanosizing and carbon-wrapping in the NVP particles is responsible for the remarkable electrochemical properties. The pyrosynthesis technique appears to be a promising and feasible approach to prepare a high-performance electrode for safe and low-cost ReHAB systems as nextgeneration large-scale energy storage devices.
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