ESM: Self-supporting tungstate/MXene fibers for bendable lithium and sodium batteries

已传文件：photo/1631586161.png Beiconn can provide self-supporting tungstate/MXene fibers (customizable)







       Wearable electronic devices such as Apple Watch, Samsung bracelet, and Sony VR headset are gradually becoming a part of life because of the great convenience they bring. With the rapid rise of the consumer market, wearable devices will inevitably require further development of flexible energy storage systems. Fiber batteries have gained popularity in recent years as an ideal energy supply for wearable devices, which allow mechanical deformation in all dimensions and can be integrated into wearable electronic textiles.



      Recently, Professor Zhao Jiupengs group from Harbin Institute of Technology published a research paper titled Assembling Free-Standing and Aligned Tungstate/MXene Fiber for Flexible Lithium and Sodium-Ion Batteries with Efficient Pseudocapacitive Energy Storage in the well-known academic journal Energy Storage Materials. A one-dimensional wire electrode is designed and assembled, and it has good performance in lithium-ion sodium-ion batteries.










Figure 1. Schematic diagram of the synthesis process and AFM characterization of tungstate/MXene composite fibers.







Figure 2. SEM, XPS, Zeta potential and mechanical properties tests.





Figure 3. Electrochemical tests of tungstate/MXene composite fiber electrodes assembled into one-dimensional linear lithium-ion batteries.





Figure 4. Electrochemical tests of tungstate/MXene composite fiber electrodes assembled into one-dimensional linear Na-ion batteries.



In this paper, a novel, independently aligned tungstate/MXene fiber is developed for flexible Li- and Na-ion batteries by wet-spinning technique. Among them, the two-dimensional tungstate nanosheets are combined with MXene to build a two-dimensional heterostructure in the fiber, which has excellent mechanical properties and electrochemical performance.

Literature link:

https://doi.org/10.1016/j.ensm.2020.06.018