电池2017，Vol.47Issue(2)：76-79,4.DOI:10.19535/j.1001-1579.2017.02.004
溶胶-凝胶法制备纳米LaMnO3的电催化活性
Electrocatalytic activity of nano-LaMnO3 prepared via sol-gel method
摘要
Abstract
Lanthanum manganate (LaMnO3) catalysts for zinc-air battery were prepared by surfactant PEG-2000 assisted sol-gel method.The structure and electrocatalytic activity of LaMnO3 catalysts were studied by thermogravimetry-differential scanning calorimeter(TG-DSC),XRD,Fourier transform infrared spectroscopy (FTIR),transmission electron microscope (TEM) and polarization curves.The optimum preparation process:the initial pH value was 6.5,the ratio of surface active agent to metal ions was 0.018∶ 1.000,calcined at 700 ℃ for 3 h.The prepared LaMnO3 was perovskite-type structure,the crystal forming temperature was about 450 ℃ and grain size was at the nanometer level,it had fine electrocatalytic activity for oxygen reduction.The air electrode with LaMnO3 as catalyst had the output current density of 0.165 A/cm2 at the potential of-600 mV (vs.Hg/HgO).关键词
锌-空气电池/锰酸镧(LaMnO3)/溶胶-凝胶法/催化剂/电催化活性Key words
zinc-air battery/lanthanum manganate(LaMnO3)/sol-gel method/catalyst/electrocatalytic activity分类
信息技术与安全科学引用本文复制引用
何伟,赵芳霞,肖酉,张振忠..溶胶-凝胶法制备纳米LaMnO3的电催化活性[J].电池,2017,47(2):76-79,4.基金项目
江苏高校优势学科建设工程项目(2011-6),广西科技成果转化与推广计划项目(1298009-15) （2011-6）
