Na2V6O16·3H2O Barnesite Nanorod: An Open Door to Display a Stable and High Energy for Aqueous Rechargeable Zn-Ion Batteries as Cathodes
- Authors
- Soundharrajan, Vaiyapuri; Sambandam, Balaji; Kim, Sungjin; Alfaruqi, Muhammad H.; Putro, Dimas Yunianto; Jo, Jeonggeun; Kim, Seokhun; Mathew, Vinod; Sun, Yang-Kook; Kim, Jaekook
- Issue Date
- Apr-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- Layer-structured metal oxide; aqueous Zn-ion batteries; high capacity; prolonged cycle lifespan; high energy
- Citation
- NANO LETTERS, v.18, no.4, pp.2402 - 2410
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO LETTERS
- Volume
- 18
- Number
- 4
- Start Page
- 2402
- End Page
- 2410
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/3917
- DOI
- 10.1021/acs.nanolett.7b05403
- ISSN
- 1530-6984
- Abstract
- Owing to their safety and low cost, aqueous rechargeable Zn-ion batteries (ARZIBs) are currently more feasible for grid-scale applications, as compared to their alkali counterparts such as lithium- and sodium-ion batteries (LIBs and SIBs), for both aqueous and nonaqueous systems. However, the materials used in ARZIBs have a poor rate capability and inadequate cycle lifespan, serving as a major handicap for long-term storage applications. Here, we report vanadium-based Na2V6O16·3H2O nanorods employed as a positive electrode for ARZIBs, which display superior electrochemical Zn storage properties. A reversible Zn2+-ion (de)intercalation reaction describing the storage mechanism is revealed using the in situ synchrotron X-ray diffraction technique. This cathode material delivers a very high rate capability and high capacity retention of more than 80% over 1000 cycles, at a current rate of 40C (1C = 361 mA g–1). The battery offers a specific energy of 90 W h kg–1 at a specific power of 15.8 KW kg–1, enlightening the material advantages for an eco-friendly atmosphere.
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