A team led by Professor Que Wenxiu from the Key Laboratory of Electronic Ceramics and Devices of the Ministry of Education at the School of Electronic Science and Engineering, Xi'an Jiaotong University, and the Shaanxi Provincial Engineering Research Center for Advanced Energy Storage Electronic Materials and Devices, has made advancements in the use of low-cost, widely available, and highly flexible one-dimensional bacterial cellulose as a modified material for two-dimensional MXene. They utilized NaOH as an intercalating agent and alkali treatment agent, along with a low-temperature annealing process to directionally regulate the surface functional group composition of two-dimensional MXene. By replacing unfavorable functional groups such as ?OH, ?F, and ?Cl with ?Na and ?O functional groups, they achieved a twofold increase in the specific surface area and specific capacity of MXene-based flexible film electrodes. This research achievement was recently published in "ACS Nano."
It is understood that this strategy, which utilizes economical and widely available modified materials to expand the interlayer spacing of two-dimensional MXene while directionally regulating the surface functional group composition, provides a new approach for the industrial transformation of MXene-based flexible film electrodes for high-performance supercapacitors.
Schematic illustration of alkali-treated porous MXene/bacterial cellulose composite flexible membrane electrode. (Image provided by the research group)
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