| 电解二氧化锰的掺钛研究 |
| RESEARCH ON THE DOPED TITANIUM ELECTROLYTIC MANGANESE DIOXIDE |
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| 摘要: 在硫酸锰和氯化锰体系中加入浓度相同的钛(Ⅲ)盐，可制得掺钛量不同的电解二氧化锰(EMD)。BET比表面积测定、X光电子能谱、红外光谱分析、阴极电位扫描和恒电流放电实验表明：掺钛EMD的空腔内表面积变大，钛离子在EMD颗粒表层被大大富集。掺进的TiO2进入EMD的晶格，钛使得Mn-O键强度下降。含钛量为0.25～0.4%的EMD(化学式为MnOx)在碱液中放电时，当x>1.80，钛对MnOx放电无明显的影响；当x>1.75，且放电深度为放电的第一步时，钛使EMD的放电极化变小。 |
| 关键词: 掺钛电解二氧化锰 X光电子能谱 放电深度 空腔 |
| 基金项目: |
| Abstract: When mixing Ti(Ⅲ) salt with MnSO4-H2SO4 or MnCl2-HCl system, we can obtain the doped titanium electrolytic manganese dioxide (EMD-Ti) by the electrochemical method. The data of the BET area, XPS, IR, the sweep of controlled potential and discharge at 7.5 mA current show: the inner surface area of gap in EMD-Ti particle is increased, Ti atom is richened on the surface of MnO2 particle. Doped TiO2 is entered into MnO2 lattice and also cause the binding energy of Mn-O band to be decreased. When MnOx with 0.25-0.40% Ti are discharged in 9 mol/L KOH solution, if x>1.80, discharge reaction is slightly affected by doped Ti; if x<1.75 and the discharge depth is in first step of discharge reaction, the polarization of EMD-Ti electrode is less. |
| Keywords: doped titanium electrolytic manganese dioxide XPS discharge depth gap |
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| 摘要点击次数: 2479 |
| 全文下载次数: 1930 |
| 童庆松,连锦明.电解二氧化锰的掺钛研究[J].无机化学学报,1997,13(4):380-384. |
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