【摘要】 采用150 A.m-2的高电流密度,电解周期为10 d。在此电流密度下如采用常规电解会造成电流效率降低和电解产品中-γMnO2含量降低,阳极如果采用纯钛板,还会造成阳极的严重钝化。故本实验阳极采用北京有色金属研究总院生产的钛基钛锰涂层阳极,阴极采用紫铜板,主要通过改变悬浮颗粒加入量来研究悬浮颗粒的加入对于电解工艺的影响。通过实验表明:在高电流密度下,无悬浮体或悬浮体含量较低的电解体系,电解效率较低,当悬浮颗粒含量达到或超过0.075 g.L-1时,电解效率在98%以上。X射线衍射表明:随着悬浮颗粒加入量的增大,电解产品中-γMnO2含量不断增加。更多还原

【Abstract】 The electrolytic manganese dioxide(EMD) was prepared under the current density of 150 A·m-2,with a duration of 10 d.The current efficiency of the conventional method is very low,in addition,the content of γ-MnO2 is low also.If pure titanium plate was used as anode,the anode may be passivated seriously.In order to overcome all the disadvantages,the titanium plate with Ti-Mn alloy coating as an anode and red copper as a cathode to examine the influence of suspended grain on the electrolytic technique by changing the amount of suspended grain.The result indicated that the efficiency was low without suspended grain or with low density of suspended grain,when the density exceeded 0.075 g·L-1,the efficiency was over 98%.The XRD showed that the percentage of γ-MnO2 increased as increasing doping suspended grain.更多还原