期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 7, 期 11, 页码 3699-3708出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ee01876a
关键词
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资金
- 973 program of China [2011CB013000]
- NSFC [21325415, 21174019, 21173023, 21301018, 51161120361]
- Fok Ying Tong Education Foundation [131043]
- 111 Project [807012]
Pore-rich graphene networks hold great promise as advanced supporting materials of metals and metal oxides for high electrochemical performance. In this work, a dual substrate-assisted reduction and assembly (DSARA) process has been devised and demonstrated as a general approach for the spontaneous reduction of graphene oxide, well-organized assembly of reduced graphene oxide into three-dimensional porous networks, and simultaneous functionalization of graphenes with metal-based nanocomponents on demand, including metals, metal oxides, metal/metal oxide hybrids or alloys. The newly designed process avoids the use of toxic reducing agents, multiple steps, and long reaction times, and offers a facile but powerful pathway to greatly enhance the merits of using pristine graphenes in energy-related applications such as lithium ion batteries, fuel cells, photoelectric conversion devices, and so on. Specifically, as an anode material in a lithium ion battery (LIB), the DSARA-produced RGO decorated with NiO/Ni nanohybrids presents a record capacity with a high charge-discharge rate compared to those reported so far for Ni based materials. PdPt alloy nanoparticles on 3D RGO generated by DSARA exhibits a highly efficient catalytic performance for the oxygen reduction reaction (ORR) in fuel cells.
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