Graphite and platinum's catalytic selectivity for disulfide/thiolate (T-2/T-) and triiodide/iodide (I-3(-)/I-)
文献类型：期刊论文
| 作者 | Wu, Hongwei; Lv, Zhibin; Chu, Zengze; Wang, Dan; Hou, Shaocong; Zou, Dechun |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2011 |
| 卷号 | 21期号:38页码:14815-14820 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/c1jm11864a |
| 英文摘要 | Dye-sensitized solar cells (DSSCs) using pure graphite sheet as the substrate and catalytic material were first fabricated based on a disulfide/thiolate (T-2/T-) redox couple. It can present up to 4.79% of the power-conversion efficiency (PCE), compared with the 2.33% of triiodide/iodide (I-3(-)/I-) redox couple at the same experimental condition under AM 1.5 illumination (100 mW cm(-2)). In contrast, when FTO/Pt is used as the counter electrode, PCE values are 3.97% and 7.13% based on the T-2/T- and I-3(-)/I- redox couples, respectively. With respect to the above dramatic difference, cyclic voltammetry (CV) and electrochemical impedance spectra (EIS) are applied to study the catalytic behavior at electrolyte (T-2/T- and I-3(-)/I-)/counter electrode (graphite sheet and FTO/Pt) interface. In particular, EIS indicated that the charge transfer resistance (R-CT) (1.1 Omega cm(2)) of the graphite sheet for T-2/T- is less than one-ninth of its R-CT (10.2 Omega cm(2)) for I-3(-)/I-. However, the R-CT of FTO/Pt (7.7 Omega cm(2)) for T-2/T- is more than twice the R-CT (3.0 Omega cm(2)) of I-3(-)/I-. This demonstrates the high catalytic selectivity of graphite and platinum (Pt) for the two redox couples. These results show the great potential of carbon materials to replace Pt by using this novel electron-transfer mediator in DSSCs. |
| 语种 | 英语 |
| WOS记录号 | WOS:000295101000069 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72301]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zou, Dechun |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hongwei,Lv, Zhibin,Chu, Zengze,et al. Graphite and platinum's catalytic selectivity for disulfide/thiolate (T-2/T-) and triiodide/iodide (I-3(-)/I-)[J]. JOURNAL OF MATERIALS CHEMISTRY,2011,21(38):14815-14820. |
| APA | Wu, Hongwei,Lv, Zhibin,Chu, Zengze,Wang, Dan,Hou, Shaocong,&Zou, Dechun.(2011).Graphite and platinum's catalytic selectivity for disulfide/thiolate (T-2/T-) and triiodide/iodide (I-3(-)/I-).JOURNAL OF MATERIALS CHEMISTRY,21(38),14815-14820. |
| MLA | Wu, Hongwei,et al."Graphite and platinum's catalytic selectivity for disulfide/thiolate (T-2/T-) and triiodide/iodide (I-3(-)/I-)".JOURNAL OF MATERIALS CHEMISTRY 21.38(2011):14815-14820. |
入库方式： OAI收割
来源：化学研究所
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