PtCoFe nanowires with different alloying compositions are chemically prepared and acted as counter electrodes (CEs) in dye‐sensitized solar cells (DSSCs) with Ru(II)‐based dyes. Due to their superior reduction activity, PtCoFe nanowires with rich (111) facets enhance the performance of DSSCs. Hence, N719 DSSCs with PtCoFe nanowires, respectively, produce better power conversion efficiency (PCE) of 8.10% for Pt₃₃Co₂₄Fe₄₃ nanowire, 8.33% for Pt₇₄Co₁₂Fe₁₄ nanowire, and 9.26% for Pt₄₉Co₂₃Fe₂₈ nanowire in comparison to the PCE of Pt CE (7.32%). Further, the PRT‐22 DSSC with Pt₄₉Co₂₃Fe₂₈ nanowire exhibits a maximum PCE of 12.29% with a certificated value of 12.0%, which surpass the previous PCE record of the DSSCs with Ru(II)‐based dyes. The photovoltaic and electrochemical results reveal the composition‐dependent activity along with a volcano‐shaped trend in the I⁻/ redox reaction. Theoretical work on the adsorption energies of I₂, the desorption energies of I⁻, and the corresponding absolute energy demonstrates that the reduction activity followed in the order of Pt₄₉Co₂₃Fe₂₈(111) plane > Pt₇₄Co₁₂Fe₁₄(111) plane > Pt₃₃Co₂₄Fe₄₃(111) plane, proving Pt₄₉Co₂₃Fe₂₈ nanowire to be a superior cathode material for DSSCs.

中文翻译：

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PtCoFe纳米线阴极可提高基于Ru（II）的染料敏化太阳能电池的短路电流，使功率转换效率达到12.29％

化学合成了具有不同合金成分的PtCoFe纳米线，并用作含Ru（II）染料的染料敏化太阳能电池（DSSC）中的反电极（CE）。由于其卓越的还原活性，具有丰富（111）刻面的PtCoFe纳米线可增强DSSC的性能。因此，带有PtCoFe纳米线的N719 DSSC分别产生更好的功率转换效率（PCE），对于Pt ₃₃ Co ₂₄ Fe ₄₃纳米线为8.10％，对于Pt ₇₄ Co ₁₂ Fe ₁₄纳米线为8.33％，对于Pt ₄₉ Co ₂₃ Fe为9.26％。与Pt CE的PCE相比，只有₂₈纳米线（7.32％）。此外，带有Pt ₄₉的PRT-22 DSSCCo ₂₃ Fe ₂₈纳米线的最大PCE为12.29％，认证值为12.0％，超过了以前使用Ru（II）染料的DSSC的PCE记录。光伏和电化学结果揭示了组成依赖活性与在I火山形趋势沿^- /氧化还原反应。上的我的吸附能理论工作₂，I的解吸能量^- ，和相应的绝对能量表明，还原活性遵循的Pt的顺序₄₉钴₂₃的Fe ₂₈（111）面>的Pt ₇₄钴₁₂的Fe ₁₄（111）平面> Pt ₃₃ Co ₂₄ Fe ₄₃（111）平面，证明Pt ₄₉ Co ₂₃ Fe ₂₈纳米线是DSSC的优良阴极材料。