writer：Zihao Wang, Jiahang Liu, Jianxin Zhang, Shuai Hao, Xiaoli Duan*, Hongzan Song*, Jun Zhang*.
keywords：cellulose，chitosan， ionogel，self-healability
source：期刊
specific source：Cellulose
Issue time：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.