A universal electrochemical lithiation-delithiation method to prepare low-crystalline metal oxides for high-performance hybrid supercapacitors.

ABSTRACT: The electrochemical performance of transition metal oxides (TMOs) for hybrid supercapacitors has been optimized through various methods in previous reports. However, most previous research was mainly focused on well-crystalline TMOs. Herein, the electrochemical lithiation-delithiation method was performed to synthesise low-crystallinity TMOs for hybrid supercapacitors. It was found that the lithiation-delithiation process can significantly improve the electrochemical performance of "conversion-type" TMOs, such as CoO, NiO, etc. The as-prepared low-crystallinity CoO exhibits high specific capacitance of 2154.1 F g^-1 (299.2 mA h g^-1) at 0.8 A g^-1, outstanding rate capacitance retention of 63.9% even at 22.4 A g^-1 and excellent cycling stabil

SUBMITTER: Wu ZD 

PROVIDER: S-EPMC9041128 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature