摘要
采用水热合成法制备了二氧化锰/二氧化钛/介孔碳复合材料,利用该复合材料制备了空气电极。通过X射线衍射仪(XRD)分析了复合材料的物相,用扫描电子显微镜(SEM)观察了复合材料的表面形貌,采用循环伏安法研究了空气电极的电化学性能。结果表明:在160℃条件下制备的复合材料结晶度更高,循环伏安测试表明空气电极可逆性较好。利用复合材料组装了锂空气电池,对其进行充放电测试,发现锂空气电池首次放电容量最高可达1 331 m Ah/g。
Manganese dioxide/titanium dioxide/mesoporous carbon composite materials were synthesized via a hydrothermal reaction and air electrode was prepared with composite materials. The crystal structures and the surface morphologies of the composite materials were characterized by X-ray diffractometer （XRD） and scanning electron microscope （SEM）. Cyclic voltammetry was adopted to investigate the electrochemical behaviors. The experimental results show that the highest degree of crystallinity can be achieved for the composite material prepared on the condition of 160℃ and its air electrode has good electrochemical reversibility. The charge-discharge of lithium-air batteries with air electrode was tested. The first discharge performance of lithium-air batteries is up to 1 331 mAh/g.
出处
《电子元件与材料》
CAS
CSCD
2015年第11期61-64,共4页
Electronic Components And Materials
关键词
锂空气电池
空气电极
复合材料
二氧化锰
二氧化钛
介孔碳
lithium-air batteries
air electrodes
composite materials
manganese dioxide
titanium dioxide
mesoporous carbon
