Three-dimensional hollow platinum-nickel bimetallic nanoframes for use in dye-sensitized solar cells

Pt3Ni bimetallic nanoframes with 3D electrocatalytic surfaces are used as the counter electrode for the DSSC, achieving an enhanced photovoltaic conversion efficiency of 7.75% compared to that using the thermal decomposition Pt CE (7.26%). This is due to the catalytic surfaces of this 3D hollow rhombic dodecahedron nanoframes are composed of the Pt-rich structure, which has a high catalytic activity for the reduction of I3− to I− and a low charge transfer resistance at the electrolyte/electrode interface.163