Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
Lawrence Berkeley National Laboratory · University of California, Berkeley · +6 more institutions
Abstract
Control of structure at the atomic level can precisely and effectively tune catalytic properties of materials, enabling enhancement in both activity and durability. We synthesized a highly active and durable class of electrocatalysts by exploiting the structural evolution of platinum-nickel (Pt-Ni) bimetallic nanocrystals. The starting material, crystalline PtNi3 polyhedra, transforms in solution by interior erosion into Pt3Ni nanoframes with surfaces that offer three-dimensional molecular accessibility. The edges of the Pt-rich PtNi3 polyhedra are maintained in the final Pt3Ni nanoframes. Both the interior and exterior catalytic surfaces of this open-framework structure are composed of the nanosegregated…
Citation impact
- FWCI
- 96.18
- Percentile
- 100%
- References
- 41
Authors
17- CCChen ChenCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley, Tsinghua University
- YKYijin KangCorresponding
Argonne National Laboratory
- ZHZiyang Huo
Lawrence Berkeley National Laboratory, University of California, Berkeley
- ZZZhongwei Zhu
Lawrence Berkeley National Laboratory, University of California, Berkeley
- WHWenyu Huang
Lawrence Berkeley National Laboratory, University of California, Berkeley
Topics & keywords
- Dodecahedron
- Catalysis
- Platinum
- Dissolution
- Materials science
- Nanocrystal
- Fuel cells
- Nanotechnology