Flexible TiVCTx MXene film for high-performance magnesium-ion storage device

Yuming Zhang; Dongdong Li; Junzhi Li; Yilin Li; Lili Wang; Hao Xu; Wei Han

doi:10.1016/j.jcis.2023.11.175

Flexible TiVCTx MXene film for high-performance magnesium-ion storage device

J Colloid Interface Sci. 2024 Mar:657:550-558. doi: 10.1016/j.jcis.2023.11.175. Epub 2023 Nov 30.

Authors

Yuming Zhang¹, Dongdong Li¹, Junzhi Li², Yilin Li¹, Lili Wang³, Hao Xu⁴, Wei Han⁵

Affiliations

¹ State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences & Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing 100083, China; Sino-Russian International Joint Laboratory for Clean Energy and Energy Conversion Technology, College of Physics, Jilin University, Changchun 130012, China.
² State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
³ State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences & Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing 100083, China.
⁴ State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences & Center of Materials Science and Optoelectronic Engineering, University of Chinese Academy of Sciences, Beijing 100083, China. Electronic address: haoxu19@semi.ac.cn.
⁵ Sino-Russian International Joint Laboratory for Clean Energy and Energy Conversion Technology, College of Physics, Jilin University, Changchun 130012, China. Electronic address: whan@jlu.edu.cn.

PMID: 38071804
DOI: 10.1016/j.jcis.2023.11.175

Abstract

Magnesium-based battery system has emerged as the potential candidate to beyond Li-ion battery system due to the numerous advantageous of magnesium anode, such as natural abundance, high capacity and dendrites free. However, the selection of cathode materials and the intercalation of magnesium-ions in the cathode host material remains a challenge due to the strong interaction of highly polar divalent magnesium ions with the cathode material, making the diffusion of magnesium ions relatively difficult. Herein, the flexible TiVCT_x MXene film was developed via a facile and economical approach. As the cathode host material for magnesium-ion storage, the freestanding TiVCT_x MXene film displays a high specific capacity of 111 and 135 mAh g^-1 at a current density of 0.05 A g^-1 for magnesium-ion batteries (MIB) and Mg/Li hybrid batteries (MLHB). Furthermore, a long-term cycling stability over 1000 cycles was demonstrated and a detailed investigation of the unique long activation phenomenon of MXene films during cycling. More importantly, the reaction mechanism of magnesium-ion storage was validated, i.e., the MXene interlayer spacing variation with the reversible Mg²⁺ diffusion behavior. This work reveals the magnesium storage mechanism of MXene materials and provides a new pathway for high-performance storage of magnesium-ion cathode materials.

Keywords: 2D material; Energy storage; Magnesium-ion batteries; Mg/Li hybrid batteries; TiVCT(x) MXene.