锂离子电池正极材料二巯基噻二唑的研究进展

Research progress in DMcT based cathode materials for Li-ion batteries

二巯基噻二唑(DMcT)作为锂离子电池正极材料,具有容量高、寿命长、制备简便等优点,但它在室温下的反应速度较慢。介绍DMcT在锂离子电池中的充放电机理及利用聚苯胺、聚吡咯、聚3,4-乙撑二氧噻吩、聚邻甲基苯胺、聚N-甲基化苯胺、聚3-烷基酯-4-甲基吡咯、聚3-丁基酯-4-甲基吡咯、聚二巯基噻二唑、金属离子以及金属纳米粉等电催化剂对DMcT进行改性的研究进展,以及电催化剂对DMcT电化学性能的影响。通过这些改性,DMcT的放电容量、正极电流、循环寿命都得到了改善。

<Abstrcat>As a Li-ion battery cathode material, 2,5-dimercapto-1,3,4-thiadiazole (DMcT) had some advantages, such as high capacity, long cyclic life and simple preparation, but its reaction was slow at room temperature. Charge-discharge mechanism in Li-ion battery and performance improvement of DMcT modified by poly aniline (PAn), poly pyrrole (PPy), poly (3,4-ethylenedioxythiophene) (PEDOT),poly(o-toluidine) (POT), N-methylated polyaniline(NMPAn), Poly(3-alkylcarboxylate-4-methylpyrrol) (PAMPy), Poly(3-butycarboxylate-4-methylpyrrol) (PBMPy), poly 2,5-dimercapto-l,3,4-thiadiazole(PDMcT), metal ions and metal nano-particles were reviewed and the effects of eletrocatalyst on electrochemical performance were discussed. Through these modifications, the discharge capacity, cathode currents and cyclic life of DMcT were improved.