Ti_4O_7纳米导电添加剂对铅酸电池正极性能的影响  

Effects of nanometer Ti_4O_7 conductive additive on the properties of positive electrodes of lead-acid batteries

作　　者：郭泉忠[1] 郭兴华[1] 杜克勤[1] 王勇[1] 郭志刚 GUO Quanzhong;GUO Xinghua;DU Keqin;WANG Yong;GUO Zhigang(Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Science,Shenyang Liaoning 110000;The Academy of Tianneng Group, Changxing Zhejiang 313100, China)

机构地区：[1]中国科学院金属研究所金属腐蚀与防护实验室,辽宁沈阳110000 [2]天能集团研究院,浙江长兴313100

出　　处：《蓄电池》2017年第4期151-153,189,共4页Chinese LABAT Man

基　　金：国家自然科学基金(51402307;51501202)

摘　　要：采用溶胶-凝胶/碳热还原法成功地制备了Magnéli相Ti_4O_7纳米导电添加剂。通过扫描电子显微镜和X射线衍射仪分别观测了Ti_4O_7纳米颗粒的微观形貌和相组成。将少量Ti_4O_7导电添加剂加入到铅酸电池正电极中,并采用循环伏安法和放电曲线分别考察了Ti_4O_7导电添加剂对电极性能的影响。试验结果表明,Ti_4O_7纳米导电添加剂的加入可以有效改善Pb电极的电化学活性,尤其是其在高倍率电流密度下的放电性能。A Magnéli phase of nanometer Ti4O7as the conductive additive was successfully preparedby the sol-gel/carbothermic reduction method.The microtopography and phase composition of thenanometer Ti4O7were characterized by SEM and X-ray diffraction.Substantial improvements of leadacidbattery were obtained by the addition of small amount of Ti4O7to the positive electrode,which wasinvestigated through cyclic voltammetry and discharge curves.Compared with the Pb electrode withoutTi4O7,the Pb electrode with nanometer Ti4O7showed a better discharge property at high rate of currentdensity.

关 键 词：溶胶-凝胶/碳热还原法 导电添加剂 Magnéli相 Ti4O7 正极 铅酸电池 

分 类 号：TM912.1[电气工程—电力电子与电力传动]