作　　者： ; ; ;

机构地区： 广州大学化学化工学院

出　　处： 《电池》 2012年第3期129-131,共3页

摘　　要： 以三聚氰胺、间苯二酚和甲醛为原料,通过溶胶-凝胶、溶剂置换、冷冻干燥及碳化等步骤,制备三聚氰胺-间苯二酚-甲醛(MR)含氮碳气凝胶(MR-CA)。比表面积及微孔分析结果显示:MR气凝胶的孔径为5～40 nm,平均孔径为15.5 nm。使用旋转圆盘电极在O2饱和的0.5 mol/L H2SO4中对制备的催化剂进行线性扫描测试,当转速为1 200 r/min时,MR-CA催化剂在相同条件下的氧还原极限电流比三聚氰胺-甲醛含氮碳气凝胶(MF-CA)催化剂高4倍左右。 Melamine-resorcinol-formaldehyde（MR） nitrogen contained carbon aerogel（MR-CA） was prepared through the steps of sol-gel, solvent exchange, freeze-drying and carbonization using melamine, resorcinol and formaldehyde as raw materials. The results of specific surface area and microporous analysis showed that the pore size of MR acrogel was 5 - 40 nm, the average pore size was 15.5 nm. The linear scanning test was taken to the prepared catalysts using rotating disk electrode in 02 saturated 0.5 mol/L H2 SO4. When the rotation rate was 1 200 r/min, the oxygen reduction limiting current of MR-CA catalyst was about 4 times high- er than melamine-formaldehyde nitrogen contained carbon aerogel（MF-CA） catalyst in the same condition.

关 键 词： 碳气凝胶 冷冻干燥 氧还原反应 质子交换膜燃料电池

领　　域： [电气工程]