Novel chemically cross-linked chitosan-cellulose based ionogel with self-healability, high Ionic conductivity, and high thermo-mechanical stability.
作者：Zihao Wang, Jiahang Liu, Jianxin Zhang, Shuai Hao, Xiaoli Duan*, Hongzan Song*, Jun Zhang*.
關鍵字：cellulose，chitosan， ionogel，self-healability
論文來源：期刊
具體來源：Cellulose
發表時間：2020年
Developing flexible electrochemical
devices with high-performance electrolytes by using
natural renewable polymer is of great significance for
meeting green and sustainable energy requirements.
Here, a new type of chemically cross-linked ionogel
based on natural chitosan and cellulose with good selfhealability
has been designed by a two-step method in
ionic liquid. The rheological and dynamic mechanical
analysis tests revealed that the as-prepared ionogel
exhibited excellent thermo-mechanical stability even
when the temperature was as high as 150 C.
Furthermore, the obtained ionogels showed good frost
resistance, and still could maintain excellent flexibility
even when the temperature was as low as - 20 C.
More importantly, the ionogel showed superior room
temperature ionic conductivity (up to 2.1 mS/cm) and
retained high electrical performance over a temperature
range from - 50 to 120 C. Additionally, the
ionogel was used as electrolyte for preparing flexible
supercapacitors and showed good performance under
high temperature and harsh mechanical conditions.
Such an ionogel, based on natural polymers with
robust mechanical properties, high ionic conductivity,
self-healability, and wide working temperature range,
could be very useful for next-generation sustainable
electrochemical devices.