青海师范大学学报：自然科学版
青海師範大學學報：自然科學版
청해사범대학학보：자연과학판
Journal of Qinghai Normal University(Natural Science Edition)
2011年
2期
42-45
,共4页
DMF%电化学性质%扩散系数%形核
DMF%電化學性質%擴散繫數%形覈
DMF%전화학성질%확산계수%형핵
DMF%electrochemical characteristics%diffusion coefficients%nucleation
293.15K时,利用循环伏安曲线、计时电流曲线研究了0.02mol.L-1Mg（ClO4）2-0.1mol.L-1LiClO4-DMF基础体系中Mg2＋的电化学行为.研究结果表明,Mg2＋在铂电极上的反应过程受扩散控制并且其形核过程是瞬间成核.同时在该体系中利用循环伏安曲线,计时电量曲线分别计算了0.02mol.L-1的Mg2＋的扩散系数D0和传递系数α其值分别为4.09610-6cm2.s-13、.2510-6cm2.s-1和0.095.
293.15K時,利用循環伏安麯線、計時電流麯線研究瞭0.02mol.L-1Mg（ClO4）2-0.1mol.L-1LiClO4-DMF基礎體繫中Mg2＋的電化學行為.研究結果錶明,Mg2＋在鉑電極上的反應過程受擴散控製併且其形覈過程是瞬間成覈.同時在該體繫中利用循環伏安麯線,計時電量麯線分彆計算瞭0.02mol.L-1的Mg2＋的擴散繫數D0和傳遞繫數α其值分彆為4.09610-6cm2.s-13、.2510-6cm2.s-1和0.095.
293.15K시,이용순배복안곡선、계시전류곡선연구료0.02mol.L-1Mg（ClO4）2-0.1mol.L-1LiClO4-DMF기출체계중Mg2＋적전화학행위.연구결과표명,Mg2＋재박전겁상적반응과정수확산공제병차기형핵과정시순간성핵.동시재해체계중이용순배복안곡선,계시전량곡선분별계산료0.02mol.L-1적Mg2＋적확산계수D0화전체계수α기치분별위4.09610-6cm2.s-13、.2510-6cm2.s-1화0.095.
The electrochemical characteristics of Mg2＋ on Pt electrode were studied by the methods of Cyclic voltammetry and chronoamperometry in 0.02mol·L-1MgClO4–0.1mol·L-1 LiClO4-DMF system at 293.15 K.Results indicate that the reaction process is controlled by diffusion and the processing of nucleation is instant nucleation.And also the Mg2＋ diffusion coefficients of 0.02 mol·L-1 were measured by the methods of Cyclic voltammetry and Chronocoulometric,the diffusion coefficients are respectively 4.095 10-6cm2·s-1、3.25 10-6cm2·s-1and the transfer coefficients is 0.095.
