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用循环伏安（ＣＶ）和恒流放电及充放电技术测试了固相方法合成的纳米γ－ＭｎＯ２ 的电化学性能． 结果表明， 纳米γ－ＭｎＯ２ 在碱性电解液中具有优良的电化学活性． 纳米样品在－ ０．２ Ｖ 之后极化程度变小， 电位下降的趋势明显减慢． 重负荷放电时， 纳米微粒样品显示出更大的优势，放电容量大幅度增加． ＣＶ图中显示， 纳米ＭｎＯ２ 的峰电流明显大于国际１ 号电解二氧化锰样品（记为Ｓ）的峰电流， 表明在纳米样品中， 质子、电子的嵌入和脱出以及Ｍｎ（Ⅲ）、Ｍｎ（Ⅱ）的溶解和沉积比Ｓ样中更易进行
The electrochemical properties of nano-γ-MnO2 synthesized by the solid phase method were tested by cyclic voltammetry (CV), constant current discharge and charge-discharge technique. The results show that the nano-γ-MnO2 in the alkaline electrolyte has excellent electrochemical activity. The polarization degree of nano-samples after-0.2 V became smaller, and the tendency of potential decrease obviously slowed down. When subjected to heavy load discharge, the nanoparticle samples showed a greater advantage and the discharge capacity increased significantly. CV shows that the peak current of nano-MnO2 is obviously larger than the peak current of International Manganese Dioxide No. 1 (denoted as S), indicating that proton and electron intercalation and de-bonding as well as Mn (Ⅲ), Mn Ⅱ) dissolution and deposition easier than the S-like sample