Interface Engineering via Ti3C2Tx MXene Electrolyte Additive toward Dendrite-Free Zinc Deposition

Sun, Chuang, Wu, Cuiping, Gu, Xingxing, Wang, Chao and Wang, Qinghong (2021) Interface Engineering via Ti3C2Tx MXene Electrolyte Additive toward Dendrite-Free Zinc Deposition. Nano-Micro Letters, 13 (1). p. 89. ISSN 2311-6706

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Zinc metal batteries have been considered as a promising candidate for next-generation batteries due to their high safety and low cost. However, their practical applications are severely hampered by the poor cyclability that caused by the undesired dendrite growth of metallic Zn. Herein, Ti3C2Tx MXene was first used as electrolyte additive to facilitate the uniform Zn deposition by controlling the nucleation and growth process of Zn. Such MXene additives can not only be absorbed on Zn foil to induce uniform initial Zn deposition via providing abundant zincophilic-O groups and subsequently participate in the formation of robust solid-electrolyte interface film, but also accelerate ion transportation by reducing the Zn2+ concentration gradient at the electrode/electrolyte interface. Consequently, MXene-containing electrolyte realizes dendrite-free Zn plating/striping with high Coulombic efficiency (99.7%) and superior reversibility (stably up to 1180 cycles). When applied in full cell, the Zn-V2O5 cell also delivers significantly improved cycling performances. This work provides a facile yet effective method for developing reversible zinc metal batteries.

Item Type: Article
Additional Information: Funding information: This work was supported by the National Natural Science Foundation of China (No. 51902036, 51702138, 22075115), Natural Science Foundation of Chongqing Science & Technology Commission (No. cstc2019jcyj-msxm1407), Natural Science Foundation of Chongqing Technology and Business University (No. 1952009), the Venture & Innovation Support Program for Chongqing Overseas Returnees (Grant No. CX2018129), the Science and Technology Research Program of Chongqing Municipal Education Commission (Grant No. KJQN201900826 and KJQN201800808), the Innovation Group of New Technologies for Industrial Pollution Control of Chongqing Education Commission (Grant No. CXQT19023) and Key Disciplines of Chemical Engineering and Technology in Chongqing Colleges and Universities during the 13th Five Year Plan provided the financial support.
Uncontrolled Keywords: Zinc metal batteries; Ti3C2Tx MXene; Electrolyte additive; Uniform Zn deposition
Subjects: F100 Chemistry
F200 Materials Science
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 01 Jul 2021 11:50
Last Modified: 31 Jul 2021 10:32

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