电解水制氢(及其氢氧燃料电池)的化学半反应 current density 2H2→O2+4H+4e H2→2H+2e diffusion- Ruo platinum limited Ps‖ hydrogenase current 0 123 E(vS RHE) PtNi diffusion laccase overpotential limited current O2+4H+4e→2H2O 2H++2e→H2 Ref: M.T. M. Koper, H.A. Heering, in"Fuel Cell Science", Eds. A. Wieckowski, J.K. Norskov, Wiley, (2010) p.71-1106 电解水制氢（及其氢氧燃料电池）的化学半反应 Ref: M.T.M. Koper, H.A. Heering, in "Fuel Cell Science", Eds. A. Wieckowski, J.K. Norskov, Wiley, (2010), p.71-110