Durable Zn-ion hybrid capacitors using 3D printed carbon composites.

ABSTRACT: Rechargeable Zn-ion hybrid capacitors (ZHCs) have gained considerable attention towards future energy storage applications owing to their non-flammable nature, high abundance of raw materials and remarkable energy storage performance. However, the uncontrolled growth of dendrites, interfacial corrosion of Zn anodes and limited mass loading of cathode materials, hinders their practical applicability. Herein, we demonstrate ZHCs with enhanced capacity and durability using a synergistic combination of a hybrid-ion electrolyte and a high-mass loading three-dimensionally (3D) printed graphene-carbon nanotube (Gr-C) cathode. The hybrid electrolyte composed of NaCl and ZnSO₄, features higher ionic conductivity and lower pH compared with pristine ZnSO₄, which enable uniform p

SUBMITTER: Nagaraju G 

PROVIDER: S-EPMC9337798 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature