摘要
将具有特殊吸附特性的电气石与二氧化锰（MnO2）物理混合，制得电气石-MnO2电极。通过XRD、SEM对样品与电气石进行形貌与结构分析，用循环伏安、恒流充放电测试研究材料的电化学性能。当MnO2的质量为10 mg、电气石质量为12.5 mg时，电极在1 mol/L Na2 SO4中，以0.25 A/g的电流在-0.1～0.7 V放电，比电容可达347.0 F/g；电气石还可改善电极的循环稳定性，经过400次循环，电极的电容保持率可提高到90％。
Tourmaline with special adsorption characteristic was mixed with manganese dioxide （MnO2 ）to prepare tourmaline-MnO2 electrode. The morphology and microstructure of samples and tourmaline were examined by SEM and XRD. Electrochemical performance of as-prepared samples was studied by cyclic voltammetry（CV）and galvanostatic charge/discharge. The specific capac-itance of 347.0 F/g was achieved in 1 mol/L Na2 SO4 electrolyte at the current density of 0.25 A/g and under the potential window of -0.1 ~0.7 V with a certain proportion（mMnO2 =10 mg,mDQ =12.5 mg）. The cycle stability of electrode was improved by tour-maline,after 400 cycles,the capacitance retention of electrode was raised to 90%.
出处
《电池》
CAS
CSCD
北大核心
2014年第1期12-14,共3页
Battery Bimonthly
基金
新疆维吾尔自治区自然科学基金项目(2011211A001)
