Electrolytic Manganese Dioxide Production
MnSO4 + 2H2O → MnO2 + H2SO4 + H2
概要
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.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Water H₂O | 2 | (l) |
| 生成物 | Manganese Dioxide MnO₂ | 1 | (s) |
| 生成物 | Sulfuric Acid H₂SO₄ | 1 | (aq) |
日常の例
The MnO₂ cathode in every Duracell or Energizer alkaline battery is electrolytic manganese dioxide made by this process.
産業上の重要性
EMD生産量は年間50万トンを超え、アルカリ電池およびリチウム電池需要に支えられている。電池グレードのMnO₂は天然産品よりも高い純度と均一性を有する。
特性
- タイプ
- Electrochemical
- 可逆的
- いいえ
- エネルギー
- 吸熱性
- ΔH
- 385.0 kJ/mol
関連する反応
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.