首页> 外国专利> - - Aqueous binder for lithium-sulfur secondary battery preparation method thereof and lithium-sulfur secondary battery comprising the same

- - Aqueous binder for lithium-sulfur secondary battery preparation method thereof and lithium-sulfur secondary battery comprising the same

机译:--用于锂硫二次电池的水性粘合剂的制备方法以及包括该粘合剂的锂硫二次电池

摘要

The present invention relates to an aqueous binder for a lithium-sulfur secondary battery, a manufacturing method thereof and a lithium-sulfur secondary battery comprising the same. More specifically, citric acid is added to a mixed solution composed of polyethyleneimine and polyvinylpyrrolidone to prepare an aqueous binder (PEI/PVP/CA, PPC). The binder can be applied to a lithium-sulfur secondary battery having stable lifespan properties, high coulomb efficiency, and high discharge capacity through improvements such as suppression of corrosion of a metal current collector, suppression of shuttle reactions, and enhancement in the adhesiveness even in a high energy density sulfur positive electrode.
机译:锂硫二次电池用水性粘合剂,其制造方法以及包含该粘合剂的锂硫二次电池技术领域本发明涉及锂硫二次电池用水性粘合剂,其制造方法以及包含该粘合剂的锂硫二次电池。更具体地,将柠檬酸添加到由聚乙烯亚胺和聚乙烯吡咯烷酮组成的混合溶液中以制备水性粘合剂(PEI / PVP / CA,PPC)。通过改善诸如抑制金属集流体的腐蚀,抑制往复反应以及提高粘合性,甚至可以将粘合剂应用于具有稳定的寿命特性,高的库仑效率和高的放电容量的锂-硫二次电池。高能量密度的硫正电极。

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