Perovskite-Like Metal-Organic Framework of Cobalt Formate as High-Performance Electrocatalyst for Dye-Sensitized Solar Cells: From Microcube to Nanotube.
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引用次数: 0
Abstract
Perovskite-like metal-organic framework of cobalt formate, that is, [(CH3)2NH2][Co(HCOO)3]n (denoted as Co(HCOO)3), has successfully grown on a conductive carbon cloth (CC) with or without surfactant. The insertion of various thiolate surfactants, for example, 2-mercaptobenzoxazole (MBO), 2-mercaptobenzimidazole (MBI), and 2-mercaptobenzothiazole (MBT), effectively confined the particle size to microcubes owing to the core@shell structure of H2O@dimethylformamide (DMF) reverse micelles. The insertion of benzeneselenolate (PhSe-) caused the formation of both microcubes and nanotubes. When some H2O@DMF reverse micelles were intensively surrounded by benzeneselenious anions (R-SeO3- or R-SeO2-), the strong π-π stacking among benzenes would induce the crystal growth through 1D direction, leading to the formation of Co(HCOO)3 nanotubes uniformly covered on CC. Among all the CC/Co(HCOO)3 electrodes, the CC/PhSe-doped Co(HCOO)3 electrodes reached the optimal electrocatalytic performance toward triiodide reduction, and thereby functioned as the outstanding counter electrode in dye-sensitized solar cell (DSSC). Good DSSCs' efficiencies of 9.73% (1 sun) and 24% (at 6 klux) can be obtained by using CC/PhSe-doped Co(HCOO)3, which surpassed the cells with CC/bare Co(HCOO)3 (5.25% at 1 sun) and the benchmark CC/Pt (9.85% at 1 sun), owing to numerous electro-donating R-SeO3-/R-SeO2- dopants as active sites and facile 1D charge-transfer pathways.
期刊介绍:
Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics.
Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews.
A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal.
Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).