Platinum-Free Binary Co-Ni Alloy Counter Electrodes for Efficient Dye-Sensitized Solar Cells

被引:201
作者
Chen, Xiaoxu [1 ]
Tang, Qunwei [1 ]
He, Benlin [1 ]
Lin, Lin [2 ]
Yu, Liangmin [1 ]
机构
[1] Ocean Univ China, Inst Mat Sci & Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China
[2] Natl Engn Res Ctr Nanotechnol, Shanghai 200241, Peoples R China
关键词
alloys; counter electrodes; dye-sensitized solar cells; electrochemistry; energy conversion; PERFORMANCE; NANOPARTICLES; DERIVATIVES; NANOTUBES; GRAPHENE;
D O I
10.1002/anie.201406982
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Dye-sensitized solar cells (DSSCs) have attracted growing interest because of their application in renewable energy technologies in developing modern low-carbon economies. However, the commercial application of DSSCs has been hindered by the high expenses of platinum (Pt) counter electrodes (CEs). Here we use Pt-free binary Co-Ni alloys synthesized by a mild hydrothermal strategy as CE materials in efficient DSSCs. As a result of the rapid charge transfer, good electrical conduction, and reasonable electrocatalysis, the power conversion efficiencies of Co-Ni-based DSSCs are higher than those of Pt-only CEs, and the fabrication expense is markedly reduced. The DSSCs based on a CoNi0.25 alloy CE displays an impressive power conversion efficiency of 8.39%, fast start-up, multiple start/stop cycling, and good stability under extended irradiation.
引用
收藏
页码:10799 / 10803
页数:5
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