Electrolytic Manganese Dioxide Production
MnSO4 + 2H2O → MnO2 + H2SO4 + H2
概述
Electrolytic manganese dioxide (EMD) is produced by electrolyzing manganese sulfate solution in sulfuric acid at 90–98°C. MnO₂ deposits on the titanium anode as a dense, high-purity gamma-phase material with superior electrochemical activity compared to natural or chemical MnO₂. EMD is essential for high-performance alkaline and lithium batteries.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Water H₂O | 2 | (l) |
| 产物 | Manganese Dioxide MnO₂ | 1 | (s) |
| 产物 | Sulfuric Acid H₂SO₄ | 1 | (aq) |
日常示例
The MnO₂ cathode in every Duracell or Energizer alkaline battery is electrolytic manganese dioxide made by this process.
工业重要性
电解二氧化锰（EMD）年产量超过40万吨，主要用于碱性电池和NiMH电池的阴极材料，是电池工业的关键原料。
属性
- 可逆
- 否
- 能量
- 吸热
- ΔH
- 385.0 kJ/mol
相关反应
Electrorefining of Copper
Alkaline Battery Discharge
Anodizing of Aluminum
Chlor-Alkali Electrolysis
Nickel-Metal Hydride Battery
Daniell Cell (Zinc-Copper Galvanic Cell)
Electrolysis of Molten NaCl (Downs Process)
Lead-Acid Battery Discharge
Hall-Héroult Process (Aluminum Smelting)
Electrolysis of Water
Frequently Asked Questions
What is the equation for Electrolytic Manganese Dioxide Production?
The balanced equation is: MnSO₄ + 2H₂O → MnO₂ + H₂SO₄ + H₂.
What type of reaction is Electrolytic Manganese Dioxide Production?
Electrolytic Manganese Dioxide Production is a electrochemical reaction.
Is Electrolytic Manganese Dioxide Production exothermic or endothermic?
Electrolytic Manganese Dioxide Production is endothermic (absorbs energy). The enthalpy change (ΔH) is 385.0 kJ/mol.