An Aqueous Manganese-Ion Battery with NaV6O15/C Microrods as a Stable Mn2+ Storage Host
- Authors
- Soundharrajan, Vaiyapuri; Lee, Jun; Kim, Sungjin; Kim, Jung Ho; Hwang, Jang-Yeon; Kim, Jaekook
- Issue Date
- Apr-2023
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- carbon coating; manganese-ion batteries; Mn2+ intercalation; NaV6O15; C
- Citation
- BATTERIES & SUPERCAPS, v.6, no.4, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- BATTERIES & SUPERCAPS
- Volume
- 6
- Number
- 4
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191621
- DOI
- 10.1002/batt.202200527
- ISSN
- 2566-6223
- Abstract
- Manganese-ion batteries (MIBs) involving aqueous electrolytes are regarded as next-generation energy-storage systems for utilization in safe and non-flammable, grid-scale energy-storing appliances. For practical application, it is very important to establish a stable cathode with a high capacity and stable cycle life. In this respect, vanadium-based layered oxides have been well demonstrated as suitable cathodes for aqueous-electrolyte-based batteries due to their high theoretical capacity and adequate working voltage. However, the dissolution of vanadium in the aqueous electrolyte directly affects the cycle life of the vanadium-based layered oxides. In the present study, a carbon-coating approach is established to boost the rate capability and cycling stability of the NaV6O15 (NVO) cathode. When employed as a cathode for MIBs, the carbon-coated NaV6O15 (NVO/C) supplies a stable recoverable capacity of 149 mAh g(-1) at 0.4 A g(-1) after the 1600 consecutive cycles with 88 % capacity retention, along with a rapid Mn2+ storage ability of 6000 cycles at 3.0 A g(-1) with 74 % capacity retention.
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