| 水热处理对二氧化锰电容性能的影响 |
| Effect of Hydrothermal Treatment on Capacitance Performance of Manganese Dioxide |
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| 摘要: 采用化学共沉淀法制备了二氧化锰。XRD测试表明，产物为α-MnO2和γ-MnO2无定形粉末，经水热处理后的二氧化锰晶化程度增加，为α-MnO2和γ-MnO2混晶相结构。电化学测试表明，二氧化锰单电极比容量达252.72 F·g-1。经水热处理后单电极比容量达到299.15 F·g-1，比处理前的提高18.37%。经400次循环后，水热处理后的样品比容量衰减极小。 |
| 关键词: 二氧化锰 超级电容器 水热处理 |
| 基金项目: |
| Abstract: Manganese dioxide was prepared by chemical Co-precipitation. The XRD patterns indicate that the main crystal structures of the sample are amorphous α-MnO2 and γ-MnO2. The sample hydrothermal treatment shows stronger crystal phases, and the phase is α-MnO2 and γ-MnO2 mixed phase. Electrochemical measurement reveals that the specific capacitance of single electrode is 252.72 F·g-1 and reachs at 299.15 F·g-1 after hydrothermal treatment 18.37% higher than that before the treatment. Capacitance of the latter sample shows almost no decline after 400 charge/discharge cycles. |
| Keywords: manganese dioxide supercapacitor hydrothermal treatment |
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| 刘素琴,王珏,黄可龙,龚汉祥.水热处理对二氧化锰电容性能的影响[J].无机化学学报,2006,22(10):1783-1787. |
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