Electrochemical properties of novel organodisulfide poly 1,2-bis(thiophen-3-ylmethyl)disulfane as cathode material for secondary lithium batteries

Electrochemical properties of novel organodisulfide poly 1,2-bis(thiophen-3-ylmethyl)disulfane as cathode material for secondary lithium batteries
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新型有机二硫化物聚1,2-双(噻吩-3-基甲基)二硫烷作为二次锂电池正极材料的电化学性能

DOI:
10.1016/j.energy.2009.05.032
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发表时间:
2009-09
期刊:
影响因子:
9
通讯作者:
Xu Changwei
Xu Changwei
中科院分区:
工程技术1区
文献类型:
--
作者:
Dong wen;Weng Guoming;Zhang jianhua;Liu zhaoqing;Su Yuzhi;Xu Changwei

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我们通过简便的制备方法成功合成了一种新型有机二硫化物聚1,2-双(噻吩-3-基甲基)二硫烷。采用傅里叶变换红外光谱(FTIR)对聚-3-噻吩基噻吩的化学基团类型进行了表征。在 CH3CN/0.1M [Bu4N] [PF6] 溶液中研究了有机二硫化物中 S-S 键氧化还原行为的电化学特性。聚1,2-双(噻吩-3-基甲基)二硫烷的阳极和阴极峰值电势的分离是180mV。结果表明,聚1,2-双(噻吩-3-基甲基)二硫烷具有优异的电化学可逆性。聚3-噻吩噻吩的平均比容量为230mAhg−1,比LiCoO2高约2倍。
We successfully synthesized a new organodisulfide poly 1,2-bis(thiophen-3-ylmethyl)disulfane by a facile preparation method. The types of the chemical groups of poly-3-thienylthiophene were characterized by Fourier transform infrared spectroscopy (FTIR). The electrochemical properties of S–S bonds redox behavior in the organodisulfides were investigated in CH3CN/0.1M [Bu4N] [PF6] solution. The separation of the anodic and cathodic peak potentials for poly 1,2-bis(thiophen-3-ylmethyl)disulfane is 180mV. The results indicated that poly 1,2-bis(thiophen-3-ylmethyl)disulfane has an excellent electrochemical reversibility. The average specific capacity of 230mAhg−1for poly-3-thienylthiophene is about 2 times higher than that of LiCoO2.
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