摘要采用水解-水热法制备 Cu 掺杂的 Mn-Co 尖晶石型化合物（MnxCu1−xCo2O4）和碳负载尖晶石型化合物（MnxCu1−xCo2O4/C），并对不同元素掺杂比例水热法条 件进行了探索。通过循环伏安曲线等电化学测试比较了 MnxCu1−xCo2O4/C 的中性 条件下氧还原（ORR）性能，选择最优掺杂比例。通过 TEM、SEM、XRD、XPS 等表征，确定了物质的组成和形貌，解释中性条件下氧还原性能的差异。最后把催化剂用作双室微生物燃料电池（MFC）阴极催化剂，测试微生物燃料电池的性 能参数。实验结果表明：Mn0.6Cu0.4Co2O4/C 同时具有最好的电化学性能和最好的

MFC 产电性能。因此， Mn0.6Cu0.4Co2O4/C 为最优掺杂比例。68420

毕业论文关键词 Mn-Co  尖晶石型化合物 氧还原反应 微生物燃料电池 阴极催化剂Cu 掺杂 产电性能

Title Cu-doped Mn-Co spinel-type oxide used  as  cathodic  catalyst toward oxygen reduction  reaction  for  dual-chambered  microbial fuel cells  

Abstract

Cu-doped Mn-Co spinel-type oxide (MnxCu1-xCo2O4) and  carbon  black  supported spinel oxide (MnxCu1-xCo2O4/C) were synthesized by hydrolysis  -  hydrothermal method, and the synthetic conditions were explored. We compared  the ORR performance of the MnxCu1-xCo2O4/C and selected the optimal doping ratio by cyclic

voltammetry (CV) electrochemical test. Morphology characterizations by TEM、SEM、

XRD、XPS showed that the as-prepared MnxCu1-xCo2O4 nanoparticles with crystalline spinel structure were uniformly dispersed on the carbon black. Finally, the catalysts were used  for dual-chambered  microbial  fuel  cell  (MFC)  as  cathodic  catalysts. The

polarization curves were obtained. The results show that Mn0.6Cu0.4Co2O4/C has both the best electrocatalytic activity and the best power generation for MFC. Therefore, the optimal composition was Mn0.6Cu0.4Co2O4/C.

Keywords  ： Mn-Co spinel-type oxide oxygen reduction reaction microbial fuel cell cathodic catalyst Cu-doped power generation

目 次

1 绪论 1

1.1 课题研究背景 1

1.2 本课题研究内容与方法 4

2 实验材料与方法 6

2.1 研究路线 6

2.2 尖晶石型催化剂的制备 6

2.2.1 实验药品 7

2.2.2 实验仪器 8

2.2.3 合成主要步骤 8

2.3 微生物燃料电池的启动 9

2.3.1 MFC 构建 9

2.3.2 MFC 的启动和运行 10

2.3.3 实验仪器 10

2.3.4