论文部分内容阅读
对Zn|浓NH_4Cl|MnO_2,C电池放电时电压降低的研究结果表明,三分之二以上的电压降是由二氧化锰正极的行为所引起的,因而就电池的放电容量这一点而言,二氧化锰起着主要的作用。电池用二氧化锰的质量不完全取决于纯度,例如某些软锰矿,由化学分析测得MnO_2含量高达90%左右,然而以它们为原料所制成的电池却不一定具有理想的放电容量,有时甚至还不及一些MnO_2含量仅60～70%的低级矿石。直至X射线衍射分析被运用于二
The results of the study on the voltage drop of Zn | NH_4Cl | MnO_2, C battery during discharging show that more than two-thirds of the voltage drop is caused by the behavior of MnO2 cathode. Therefore, in terms of the discharge capacity of the battery, Manganese dioxide plays a major role. The quality of manganese dioxide for batteries is not completely dependent on the purity. For example, some pyrolusite samples contain MnO 2 up to about 90% as measured by chemical analysis. However, batteries made from these materials do not necessarily have an ideal discharge capacity, Sometimes not even as good as some low-grade ores with only 60-70% MnO 2 content. Until X-ray diffraction analysis was applied to two