采用不同比例的木质素磺酸钠作为胶体电解质添加剂,探讨其添加前后胶体电解质的物理和电化学性能的变化.粘度测试、老化析水量测试以及循环伏安和交流阻抗分析表明,添加剂能影响胶体粘度,减少老化析水量,提高胶体电化学性能和减少胶体电池内阻.确定添加剂最佳添加量的质量分数为0.005％～0.01％,胶体电解质中气相二氧化硅的适宜质量分数为3.0％.采用UV-Vis、FT-IR光谱、TEM和SEM对添加剂和胶体电解质的结构和形貌变化进行了表征.结果表明,添加木质素磺酸钠的胶体电解质形成更为疏松多孔的结构,更有利于离子的传导和电解液的储存.
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