负极集流体表面处理方法及对电池性能的影响

Surface Treatment Method of Cathodic Current-Collector and Its Effect on Performances of Batteries

摘要:

在高能扣式碱性锌锰电池负极集流体表面制备出一种性能良好的高氢过电位材料Zn-In合金。采用线性扫描阴极极化曲线、X射线衍射(XRD)、扫描电镜(SEM)、能谱分析(EDS)、交流阻抗(EIS)及电池气胀高度检测等方法研究Zn-In合金材料的性质、各组分的含量以及对电池性能的影响。结果表明：该Zn-In合金材料显著提高了集流体析氢过电位，从而有效地抑制电池气胀, 改善电池性能，同时降低生产成本，且对环境友好，因此用于代替In电沉积具有广阔的应用前景

Abstract:

Zn-In alloy material with high hydrogen evolution overpotential was prepared on the cathodic current-collector surface of the alkaline Zn/MnO2 battery by chemical plating. The properties, effects on the battery performances and the composition of the Zn-In alloy material were studied by linear scanning voltammetry, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), electrochemical impedance spectra (EIS) and altimetry. The results indicate that Zn-In alloy material could increase the hydrogen evolution overpotential of current-collector obviously and was capable of restricting hydrogen evolution effectively to improve the performances of batteries, which can reduce the cost and protect the environment well. Therefore, the Zn-In alloy materials have promising application in Ag-free battery industry, as the replacement of the conventional In coated copper current-collector