期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 15, 页码 17467-17477出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c00065
关键词
triphenylamine; polyimide; one-step imidization; organic electrode; lithium-ion batteries
资金
- Innovative Materials and Analysis Technology Exploration in Academia Sinica [ASiMATE-107-92, AS-iMATE-108-22, AS-iMATE-110-23]
- Ministry of Science and Technology in Taiwan [MOST 108-2113-M-001-023-MY3, MOST 109-2124-M-001-004]
Recent studies have investigated aromatic polyimide (PI) derivatives as redox-active electrode materials for Li-ion batteries due to their high thermal stability, excellent solvent resistance, and good electrical properties. Two PI derivatives, TPA-NTCPI and TPA-PMPI, synthesized from a newly developed DiCN-TPA monomer, show promising electrochemical performance with stable specific capacities up to 1000 cycles for the cathode and high specific capacities up to 1600 mAh g(-1) for the anode after 100 cycles. These results suggest that TPA-NTCPI and TPA-PMPI could be potential organic electrode materials for next generation Li-ion batteries.
Aromatic polyimide (PI) derivatives have recently been investigated as redox-active electrode materials for Li-ion batteries because of their high thermal stability and thermo-oxidative stability complemented by excellent solvent resistance, good electrical and mechanical properties, and chemical resistance. In this work, we report two PI derivatives from a newly synthesized 4,4'-diamino-3 '',4 ''-dicyanotriphenylamine (DiCN-TPA) monomer and two dianhydrides, pyromellitic dianhydride (PMDA) and 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA); designated as TPA-PMPI and TPA-NTCPI, respectively, as electrode materials for Li-ion batteries. Characterizations of the PIs reveal excellent thermal stability and bipolar property. The incorporation of DiCN-TPA into the polymer structure resulted to a disordered chain arrangement, thus giving high glass transition temperatures (T-g). Electrochemical performance tests reveal that TPA-NTCPI cathode delivered a reversible specific capacity of 150 mAh g(-1) at 0.1 A g(-1) and exhibited a stability up to 1000 cycles. On the other hand, TPA-PMPI anode delivered a high specific capacity of up to 1600 mAh g(-1) at 0.1 A g(-1) after 100 cycles. The electrochemical performance of TPA-NTCPI cathode and TPA-PMPI anode are both among the best compared with other reported aromatic PI-based electrodes. The long cycle lifetime and excellent battery performance further suggest that TPA-NTCPI and TPA-PMPI are promising organic electrode materials for next generation Li-ion batteries.
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