| Title | A Freestanding Single-Wall Carbon Nanotube Film Decorated with N-Doped Carbon-Encapsulated Ni Nanoparticles as a Bifunctional Electrocatalyst for Overall Water Splitting |
| Authors | Majeed, Abdul Hou, Peng-Xiang Zhang, Feng Tabassum, Hassina Li, Xin Li, Guo-Xian Liu, Chang Cheng, Hui-Ming |
| Affiliation | Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China UCAS, 19 A Yuquan Rd, Beijing 100049, Peoples R China Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 110016, Anhui, Peoples R China Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing Key Lab Theory & Technol Adv Battery Mat, Beijing 100871, Peoples R China Tsinghua Univ, TBSI, Shenzhen 518055, Peoples R China |
| Keywords | bifunctional electrocatalysts carbon-encapsulated nanoparticles freestanding films Ni nanoparticles overall water splitting single-walled carbon nanotubes |
| Issue Date | 2019 |
| Publisher | ADVANCED SCIENCE |
| Abstract | Noble-metal free, cost-effective, and highly stable catalysts with efficient activity for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) have attracted tremendous research interest in recent years. Here, a flexible, self-standing hybrid film comprising a N-doped single-wall carbon nanotube (SWCNT) network on which are anchored Ni nanoparticles encapsulated by a monolayer of N-doped carbon (NCNi) is reported. The films are prepared by floating catalyst chemical vapor deposition followed by NH3 treatment. The material obtained at optimum conditions shows excellent bifunctional electrocatalytic activity in alkaline media with low overpotentials of 190 and 270 mV for HER and OER, respectively, to reach a current density of 10 mA cm(-2). A current density of 10 mA cm(-2) at 1.57 V is achieved when this freestanding and binder-free rod-shaped NCNi/SWCNT assembly is used as cathode and anode in 1 m KOH solution for overall water splitting, presenting one of the best values reported to date. |
| URI | http://hdl.handle.net/20.500.11897/547411 |
| DOI | 10.1002/advs.201802177 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 工学院 先进电池材料料理论与技术北京市重点实验室 |
