Bi掺杂的直接甲醇燃料电池阳极催化剂研究进展

发展可替代能源对缓解全球能源问题具有重要意义。直接甲醇燃料电池(direct methanol fuel cell，DMFC) 因其工作温度低、能量密度高以及污染物排放少等特性，正逐渐成为最有发展前景的便携式能源技术之一。目前，其商业化进程主要取决于甲醇氧化反应(methanol oxidation reaction，MOR) 的动力学快慢、催化剂的成本和寿命。Bi元素的掺杂可以极大地提高甲醇电催化氧化的性能，并且可以提高阳极催化剂抵抗CO中毒的能力。介绍了掺杂Bi的贵金属和非贵金属阳极电催化剂，以及贵金属掺杂Bi₂O₃、Bi₂WO₆ 等光辅助电催化剂；综述了它们提高甲醇电催化氧化性能的机制，并展望了阳极Bi电催化剂在DMFC中所面临的机遇和挑战。

Research progress of Bi-doped anode catalysts for direct methanol fuel cells

The development of alternative energy is of great significance to alleviate the global energy problem. Direct methanol fuel cell (DMFC) is becoming one of the most promising portable energy technologies due to its low operating temperature, high energy density and low pollutant emissions. At present, its commercialization process mainly depends on the kinetic speed of anodic methanol oxidation reaction (MOR), the cost and life of the catalysts. The doping of Bi can greatly improve the performance of methanol electro-catalytic oxidation and the ability of anode catalyst to resist CO poisoning. Bi-doped noble metal and non-noble metal anode electrocatalysts, noble metal doped Bi₂O₃, Bi₂WO₆ and other photocatalysts photo-assisted electrocatalysts were introduced. The mechanism of their improving the methanol electrocatalytic oxidation performance was summarized, and the opportunities and challenges faced by anodic Bi electrocatalysts in DMFC were prospected.