纤维素凝胶电解质及其在超级电容器中的应用  

Cellulose Gel Polymer Electrolytes and Its Application in Supercapacitors

作　　者：张晓博 辛海瑛 许爽 张兴海[2] 王丽秋[1,3] ZHANG Xiaobo;XIN Haiying;XU Shuang;ZHANG Xinghai;WANG Liqiu(College of Environmental and Chemical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China;School of Physical Education,Yanshan University,Qinhuangdao,Hebei 066004,China;Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,China)

机构地区：[1]燕山大学环境与化学工程学院,河北秦皇岛066004 [2]燕山大学体育学院,河北秦皇岛066004 [3]南开大学先进能源材料化学教育部重点实验室,天津300071

出　　处：《应用化学》2020年第5期547-554,共8页Chinese Journal of Applied Chemistry

基　　金：河北省自然科学基金(B2019203500)、先进能源材料化学教育部重点实验室开放基金(2018)和河北省社科基金(HB18TY020)项目资助。

摘　　要：以纸浆为原料制备得到一种粘胶液,经静置水化交联,得到一种纤维素凝胶电解质(XWD-NaOH);添加亚铁氰化钾,使获得的新型纤维素凝胶电解质(XWD-NaOH-K 4[Fe(CN)6])呈现良好的氧化还原活性,电导率达15.3 mS/cm;与XWD-NaOH相比,XWD-NaOH-K 4[Fe(CN)6]电解质超级电容器,在0.5 A/g电流密度下,比电容、功率密度和能量密度分别提高了57%、111%和214%,并且体系具有更低的内阻、电荷转移电阻及高的循环稳定性。A cellulose gel electrolyte(XWD-NaOH)was obtained through static hydration and crosslinking of cellulose pulp viscose solution,followed by introducing potassium ferrocyanide into XWD-NaOH to give a gel electrolyte(XWD-NaOH-K 4[Fe(CN)6]).XWD-NaOH-K 4[Fe(CN)6]has excellent redox activity and ionic conductivity(15.3 mS/cm).At 0.5 A/g current density,XWD-NaOH-K 4[Fe(CN)6]electrolyte supercapacitor exhibits an increase of the electrode specific capacitance,power density and energy density by 57%,111%and 214%compared to those of XWD-NaOH system.The XWD-NaOH-K 4[Fe(CN)6]system has low internal resistance,charge transfer resistance and high cycle stability.

关 键 词：纸浆 凝胶聚合物电解质 亚铁氰化钾 超级电容器 

分 类 号：O646.5[理学—物理化学]