Reduced graphene oxide promoted assembly of graphene@polyimide film as a flexible cathode for high-performance lithium-ion battery.

ABSTRACT: Organic carbonyl polymers have been gradually used as the cathode in lithium-ion batteries (LIB). However, there are some limits in most organic polymers, such as low reversible capacity, poor rate performance, cycle instability, etc., due to low electrochemical conductivity. To mitigate the limits, we propose a strategy based on polyimide (PI)/graphene electroactive materials coated with reduced graphene oxide to prepare a flexible film (G@PI/RGO) by solvothermal and vacuum filtration processes. As a flexible cathode for LIB, it provides a reversible capacity of 198 mA h g^-1 at 30 mA g^-1 and excellent rate performance of 100 mA h g^-1 at high current densities of 6000 mA g^-1, and even a super long cycle performance (2500 cycles, 70% capaci

SUBMITTER: Chang B 

PROVIDER: S-EPMC9050026 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature