Boosting the capacity of MXene electrodes in neutral aqueous electrolytes

• DOI: 10.1016/j.xcrp.2023.101507
• Publication Date: 2023-07-12T14:31:02Z
• Authors: Fyodor Malchik; Kairgali Maldybayev; Tatyana Kan; Saule Kokhmetova; Munseok S. Chae; Andrey Kurbatov; Alina Galeyeva; Olzhas Kaupbay; Amey Nimkar; Gil Bergman; Noam Levi; Hui Zhang; Qianqian Jin; Zifeng Lin; Netanel Shpigel; Daniel Mandler
• Keywords: MXenes; Capacity loss

The use of Ti3C2Tx (MXene) electrodes for energy storage applications is gaining momentum. Considering the low flammability, high safety, and cost neutral aqueous electrolyte solutions, significant efforts have been devoted to utilization MXenes in this environment. However, despite stability excellent rate capability MXene electrolytes, their capacity remains insufficient, usually below 30 mAh/g. This work aims benefit from spontaneous oxidation materials under ambient conditions produce TiO2-coated flakes. By using concentrated lithium chloride an extended potential window obtained, allowing reversible insertion ions into flakes titanium dioxide nanoparticles. results enhancement (by more than 200%) without impeding capacitive activity or its mechanical integrity. prepared electrode presents long-term capability.