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采用电沉积法制备铝基MnO2电极,通过Tafel曲线、阳极极化曲线考察了镀液组成、施镀时间、施镀温度、电流密度对电极催化活性和耐蚀性的影响.考察了温度对镀层形貌的影响,最优条件下制备的MnO2电极分别在120℃、250℃、320℃和400℃条件下焙烧4h,结果表明,在120℃和250℃焙烧所得MnO2的结晶程度比不焙烧时增大了20%,而320℃和400℃焙烧所得MnO2的结晶程度比不焙烧时略有增加;物相和晶型都没有发生明显变化.因此得出制备铝基MnO2电极的最佳镀液组成和工艺条件为:MnSO4·H2O 150 g/L,H2SO4 50 g/L,温度80℃,电流密度3 mA/cm2,施镀时间75 min,120℃焙烧4h.所得电极催化活性较好,耐蚀性较强.经XRD表征主要晶型为γ-MnO2,SEM表征为球状堆积物.

参考文献

[1] Ueda M.;Kameyama T.;Matsumoto Y.;Sekimoto M.;Shimamune T.;Watanabe A. .PERFORMANCE CHARACTERISTICS OF A NEW TYPE OF LEAD DIOXIDE-COATED TITANIUM ANODE[J].Journal of Applied Electrochemistry,1995(9):817-822.
[2] Ito M.;Kaji H.;Yahikozawa K.;Takasu Y.;Murakami Y. .SURFACE CHARACTERIZATION OF RUO2-SNO2 COATED TITANIUM ELECTRODES[J].Journal of the Electrochemical Society,1996(1):32-36.
[3] Camara O R;Trasatti S .Surface electrochemical properties of Ti/(RuO2 + ZrO2) electrodes[J].Electrochimica Acta,1996,41(03):419.
[4] Comninellis Ch;Plattner E .The preparation and behaviour of Ti/Au/PbO2 anodes[J].Journal of Applied Electrochemistry,1982,12(04):399.
[5] 李乃军;梁英教;刘晓霞.锌电积烧结钛阳极的研究[J].有色金属(冶炼部分),1989(05):16.
[6] 刘业翔.功能电极材料及其应用[M].长沙:中南工业大学出版社,1996:221.
[7] Krishna, BM;Murthy, UN;Kumar, BM;Lokesh, KS .Electrochemical pretreatment of distillery wastewater using aluminum electrode[J].Journal of Applied Electrochemistry,2010(3):663-673.
[8] A.B.Velichenko;D.Devilliers .Electrodeposition of fluorine-doped lead dioxide[J].Journal of Fluorine Chemistry,2007(4):269-276.
[9] Yusairie Mohd;Derek Pletcher .The fabrication of lead dioxide layers on a titanium substrate[J].Electrochimica Acta,2006(3):786-793.
[10] Serdar Abaci;Kadir Pekmez;Attila Yildiz et al.Investigation of some parameters influencing electrocrystallisation of PbO2[J].Journal of Power Sources,2000,88:232.
[11] Mao Lanqun;Zhang Dun;Tadashi Sotomura et al.Mechanistic study of the reducton of oxygen in air electrode with manganese oxides as electrocatalysts[J].Electrochimica Acta,2003,48(08):1015.
[12] 黄庆华,王先友,汪形艳,李俊,黄伟国.超级电容器电极材料--MnO2的电化学制备及其性能[J].电源技术,2005(07):470-473.
[13] 赵峰鸣,马淳安,童少平,褚有群.喷雾热解法制备超细MnO2及其电化学性能[J].化工学报,2005(05):925-931.
[14] 李东升,王文亮,王振军.纳米MnO2的制备与表征[J].化学研究与应用,2002(05):583-586.
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