可逆质子交换膜燃料电池研究进展

可逆质子交换膜燃料电池(RPEMFC)是一种在同一装置上实现水电解(充电)和燃料电池发电(放电)两种功能的储能电池。随着PEMFC技术的迅速发展,RPEMFC开始引起人们更多关注。介绍了它的工作原理,对电催化、膜电极(MEA)制作、电池性能以及应用等方面的研究进展进行评述。双效氧电极(氧还原和氧气析出)是RPEMFC的技术关键,但其电催化剂的双效高活性功能以及稳定性还没有得到很好解决。由于它的理论比能量高(可达3 600 Wh/kg),可靠性好,并且寿命长,因此RPEMFC在许多蓄电池的应用领域,特别是对质量有严格限制的场合(如航天飞机和太阳能飞机等),将得到广泛应用。

Development status of reversible proton exchange membrane fuel cells

Reversible proton exchange membrane fuel cell (RPEMFC) is an electrochemical cell working both as the water electrolyzer (charging) and fuel cell (discharging). Promoted by the improvement of proton exchange membrane fuel cell (PEMFC) technology, RPEMFCs are attracting much attention. Its working principle was described, and development status in electro catalysis, membrane electrode assembly (MEA) preparation, performance, and application were reviewed. One key issue is the development of the bifunctional electrodes for oxygen reduction and evolution, but its highly activity and long-term stability of electro catalysts on the dual modes are under solving. Due to its theoretical energy density (as high as 3 600 Wh/kg), reliability and long lifetime, RPEMFCs have the potential to be well in excess of the energy storage systems of secondary battery, especially in weight-sensitive application, such as solar-powered aircraft, and space shuttle.