| Title | Enhancing Full Water-Splitting Performance of Transition Metal Bifunctional Electrocatalysts in Alkaline Solutions by Tailoring CeO2-Transition Metal Oxides-Ni Nanointerfaces |
| Authors | Long, Xia Lin, He Zhou, Dan An, Yiming Yang, Shihe |
| Affiliation | Hong Kong Univ Sci & Technol, William Mong Inst Nano Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China. Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Key Lab Nanomicro Mat Res, Shenzhen, Peoples R China. Hong Kong Univ Sci & Technol, William Mong Inst Nano Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China. Yang, SH (reprint author), Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Key Lab Nanomicro Mat Res, Shenzhen, Peoples R China. |
| Keywords | HYDROGEN EVOLUTION REACTION OXYGEN-EVOLUTION HIGHLY-EFFICIENT NANOWIRE ARRAYS OXIDATION CATALYSTS NANOSHEETS PHOSPHIDE ELECTRODE SURFACES |
| Issue Date | 2018 |
| Publisher | ACS ENERGY LETTERS |
| Citation | ACS ENERGY LETTERS. 2018, 3(2), 290-296. |
| Abstract | Rational design of highly efficient bifunctional electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is critical for sustainable energy conversion. Herein, motivated by the high activity of OER catalyst on water dissociation that is the rate-determining step of alkaline HER, a bifunctional catalyst of metallic nickel-decorated transition metal oxide nanosheets vertically grown on ceria film (ceria/NiTMO) is synthesized by composition controlling and surface engineering. Because of the idealized electronic structure of the active centers and the abundance of such sites, as well as a synergistic effect between the carbon cloth/ceria film and the in situ formed TMO/Ni nanoparticles, the as-synthesized ceria/NiTMO exhibited long-time stability and a low cell voltage of 1.58 V at 10 mA/cm(2) when applied as both the cathode and anode in alkaline solutions. Moreover, it is the first time that pH independent four-proton-coupled-electron-transfer processes and multiple adsorption desorption processes were found to occur at the interfaces of ceria/TMO and Ni/TMO in a single catalyst for catalyzing OER and HER, respectively. |
| URI | http://hdl.handle.net/20.500.11897/506811 |
| ISSN | 2380-8195 |
| DOI | 10.1021/acs.energy.lett.7b01130 |
| Indexed | SCI(E) |
| Appears in Collections: | 化学生物学与生物技术学院 |
