Journal
ACS APPLIED ENERGY MATERIALS
Volume 4, Issue 11, Pages 12882-12891Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c02569
Keywords
Schiff-base polymer; organic electrode materials; lithium-ion batteries; anodes; superlithiation
Funding
- Scientific Research Fund of Anhui Provincial Education Department [KJ2020A0015, KJ2018A0038]
- Anhui Province Key Laboratory of Environment-Friendly Polymer Materials
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Schiff-base polymers are synthesized using melamine as raw material through the solvothermal method and tested as anode materials for lithium-ion batteries. The capacity of the battery increases at different degrees after cycling at different current densities, due to the realization of superlithiation with the benzene ring as the lithium storage center in the polymer. The study on the interaction between material structure and electrochemical performance explores the lithium storage mechanism of the triazine Schiff-base polymer, providing guidance for the development of high-performance organic cathode materials for lithium-ion batteries.
Schiff-base polymers are synthesized by the solvothermal method using melamine as the raw material, and their performances as anode materials for lithium-ion batteries are tested. The results show that the capacity of the battery increases at different degrees after cycling at different current densities. The specific charge capacity increases from 144 to 756 mA h g(-1) at a current density of 0.5 A g(-1) and from 138 to 461 mA h g(-1) at a current density of 1 A g(-1) after 1000 cycles. The experimental analysis and theoretical calculation show that the increase of capacity of the Schiff-base polymer during cycling is due to the realization of superlithiation with the benzene ring as the lithium storage center. By studying the interaction between the material structure and electrochemical performance, the lithium storage mechanism of the triazine Schiff-base polymer is explored, which provides guidance for the development of high-performance organic cathode materials for lithium-ion batteries.
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