将发展成熟的硅光伏电池与析氧催化剂(OEC)结合,在近中性环境下光解水制备了氢气.采用原位制备方法,在硅光伏材料上电沉积钴形成无定形Co-OEC膜,有效促进光生电荷分离,实现了利用AM1.5组合滤波片模拟太阳光照射下水分解制氢气.结果表明,在K2B4O7缓冲溶液(pH=9.2)中,0V(vs NHE)电压下沉积400 s形成的无定形Co-OEC具有良好的催化析氧效果,在无外加电压且模拟太阳光照射下,析氧电流密度可达1.7×10-2 A/cm2,产氧速率为1.28 mol/(h·m2),且具有良好的稳定性.
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