MXene-Stabilized VS2 Nanostructures for High-Performance Aqueous Zinc Ion StorageShow others and affiliations
2024 (English)In: Advanced Science, E-ISSN 2198-3844, Vol. 11, no 25, article id 2401252Article in journal (Refereed) Published
Abstract [en]
Aqueous zinc-ion batteries (AZIBs) based on vanadium oxides or sulfides are promising candidates for large-scale rechargeable energy storage due to their ease of fabrication, low cost, and high safety. However, the commercial application of vanadium-based electrode materials has been hindered by challenging problems such as poor cyclability and low-rate performance. To this regard, sophisticated nanostructure engineering technology is used to adeptly incorporate VS2 nanosheets into the MXene interlayers to create a stable 2D heterogeneous layered structure. The MXene nanosheets exhibit stable interactions with VS2 nanosheets, while intercalation between nanosheets effectively increases the interlayer spacing, further enhancing their stability in AZIBs. Benefiting from the heterogeneous layered structure with high conductivity, excellent electron/ion transport, and abundant reactive sites, the free-standing VS2/Ti(3)C(2)Tz composite film can be used as both the cathode and the anode of AZIBs. Specifically, the VS2/Ti3C2Tz cathode presents a high specific capacity of 285 mAh g(-1) at 0.2 A g(-1). Furthermore, the flexible Zn-metal free in-plane VS2/Ti3C2Tz//MnO2/CNT AZIBs deliver high operation voltage (2.0 V) and impressive long-term cycling stability (with a capacity retention of 97% after 5000 cycles) which outperforms almost all reported Vanadium-based electrodes for AZIBs. The effective modulation of the material structure through nanocomposite engineering effectively enhances the stability of VS2, which shows great potential in Zn2+ storage. This work will hasten and stimulate further development of such composite material in the direction of energy storage.
Place, publisher, year, edition, pages
WILEY , 2024. Vol. 11, no 25, article id 2401252
Keywords [en]
aqueous zinc-ion batteries; heterogeneous layered structure; structural stability; Ti3C2Tz MXene; VS2
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:liu:diva-202919DOI: 10.1002/advs.202401252ISI: 001200752100001PubMedID: 38605686Scopus ID: 2-s2.0-85189982477OAI: oai:DiVA.org:liu-202919DiVA, id: diva2:1853422
Note
Funding Agencies|National Natural Science Foundation of China; Jiangxi Provincial Natural Science Foundation [20224BAB214022]; Doctoral Research Start-up Fund of Jiangxi Science and Technology Normal University [2022BSQD08]; SSF Synergy Program [EM16-0004]; Swedish Energy Agency [EM 42033-1]; Knut and Alice Wallenberg (KAW) Foundation through a Scholar Grant [KAW2020.0033]; [52103212]
2024-04-222024-04-222025-03-28Bibliographically approved