Shenzhen Advanced Institute of Chinese Academy of Sciences successfully developed a new zinc-ion hybrid supercapacitor

Recently, the team of Tang Yongbing, a researcher at the Functional Film Materials Research Center of Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, successfully developed a new zinc-ion hybrid supercapacitor, which has important reference significance for the study of new energy storage devices based on multivalent carriers
.

At present, the widely used lithium-ion battery is an excellent electrochemical energy storage technology, but the reserves of lithium resources are very limited and the distribution is extremely uneven, resulting in the high cost of lithium-ion batteries and the difficulty of recycling, which limits their wide application
in the field of large-scale energy storage.
The development of new electrochemical energy storage devices based on low cost and easy recycling has important research value and application prospects
.

Based on this, Wang Heng, Wang Meng and others, members of Tang Yongbing, developed a new high-efficiency and low-cost hybrid supercapacitor
based on +2 valent zinc ions as active carriers.
The device has an integrated design of cheap zinc foil, and at the same time uses it as an active material and current collector for the negative electrode, with environmentally friendly biomass activated carbon as the positive electrode and an organic solvent dissolved with zinc salt as the electrolyte, and realizes the reversible charge and discharge of the capacitor through the reduction/oxidation reaction of zinc ions in the negative electrode and
the adsorption/desorption reaction of anion at the positive electrode.
Large-scale energy storage in the field of renewable clean energy has good application prospects
.