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首页> 外文期刊>RSC Advances >Improved electrochemical performance of sulphur cathodes with acylated gelatine as a binder
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Improved electrochemical performance of sulphur cathodes with acylated gelatine as a binder

机译：以酰化明胶为粘合剂改善硫阴极的电化学性能

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摘要

Acylated gelatine has been successfully used in the sulphur cathode for a Li/S battery. The results indicated that acylated gelatine could effectively constrain the resolution of polysulphide into the electrolyte because of carbonyl groups' strong affinity for polysulphide. Meanwhile it also served as a strong dispersion and adhesion agent for the cathode materials. Cyclic voltammograms and electrochemical impedance spectroscopy experiments showed that the prepared cathodes have less polarization and lower transfer resistance compared to gelatine binder-sulphur cathode. The prepared cathode exhibited a much higher initial and reversible capacity after 100 cycles at rates of 0.1 and 0.5 degrees C than that of gelatine bindersulphur cathode under the same condition. Our findings have shown that acylated gelatine is a promising binder to improve Li-S performance and helpful for its future development.
机译：酰化明胶已成功用于Li / S电池的硫阴极中。结果表明，由于羰基对多硫化物具有很强的亲和力，酰化明胶可以有效地限制多硫化物在电解质中的分解。同时，它还用作正极材料的强分散剂和粘附剂。循环伏安图和电化学阻抗谱实验表明，与明胶粘合剂-硫阴极相比，制备的阴极具有更低的极化和更低的转移电阻。在相同条件下，在0.1和0.5摄氏度的速率下进行100次循环后，制得的阴极显示出更高的初始容量和可逆容量。我们的发现表明，酰化明胶是改善Li-S性能的有前途的粘合剂，并有助于其未来的发展。

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