Multilayer MXene framework for construction of hierarchical structure composites for high performance metal ion batteries
MXenes have become promising candidates for metal ion battery anodes. However, the achievable capacities of bare MXene-based electrodes are still limited. A promising strategy to overcome this issue and still exploit the unique properties of MXenes is to design composites of the MXenes and high-capa...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
7 May 2025
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| In: |
Electrochimica acta
Year: 2025, Volume: 530, Pages: 1-10 |
| ISSN: | 1873-3859 |
| DOI: | 10.1016/j.electacta.2025.146413 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.electacta.2025.146413 Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0013468625007753 
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| Author Notes: | Peng Guo, Lennart Singer, Zhiyong Zhao, Brian Hinz, Tomasz Kędzierski, Tobias König, Ewa Mijowska, Michael Zharnikov, Peter Comba, Rüdiger Klingeler |
| Summary: | MXenes have become promising candidates for metal ion battery anodes. However, the achievable capacities of bare MXene-based electrodes are still limited. A promising strategy to overcome this issue and still exploit the unique properties of MXenes is to design composites of the MXenes and high-capacity conversion or alloy-type anode materials. Despite the growing interest in these kinds of MXene-based composites, the utility of multilayer MXene with its unique accordion-like structure is, even though it promises many advantages, such as a large surface area and a unique open structure, rarely reported. Here, we report on the preparation of hierarchical MoO2/C/V2C composites by an electrostatic interaction-assisted hydrothermal method and a post-annealing process. Our composites exhibit a unique hierarchical structure, where the MoO2 nanoparticles are confined and uniformly distributed in the open V2C/C layered framework. This architecture enables fast-ion and electron transfers and nicely accommodates the volume changes of MoO2 during cycling. Therefore, when used for lithium-ion batteries, the composites exhibit outstanding long-term cycling performance at high current densities of 1 and 2 A g-1. Our results demonstrate the benefits of using an accordion-like MXene host-framework for the composite formation and highlight the potential of such composites for high performance metal ion batteries. |
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| Item Description: | Gesehen am 21.10.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1873-3859 |
| DOI: | 10.1016/j.electacta.2025.146413 |