50 degree colloidal energy storage battery

Can a rechargeable Nico/Zn battery be used at a wide-temperature range?

Unprecedentedly, the hydrogel electrolyte can be stretched over ten times at −50 °C without any freezing. Therefore, the fabricated rechargeable NiCo//Zn battery worked well in a wide-temperature-range (−20 to 50 °C). This work creates many opportunities for the development and practical application of aqueous batteries.

Are aqueous rechargeable batteries suitable for portable electronics?

Zn-based aqueous rechargeable batteries are promising in portable electronics because of their high voltage, low cost, etc. However, most conventional aqueous electrolytes are liable to freeze at low temperature and are incompatible with high ion concentrations, which hinders their application.

Can hydrogels be used as electrolytes for solid-state supercapacitors?

Mingwei Shi, Wei Yang, Zailei Zhang, Man Zhao, Zhong Lin Wang, Xianmao Lu. Hydrogels with highly concentrated salt solution as electrolytes for solid-state supercapacitors with a suppressed self-discharge rate.