선양국
2018-03-23T00:20:00Z
2018-03-23T00:20:00Z
2013-09
Nano Lett., 2013, 13 (9), p.4182-4189
1530-6984
https://pubs.acs.org/doi/10.1021/nl401833p
http://hdl.handle.net/20.500.11754/50904
In this study, atomic layer deposition (ALD) was used to deposit nanostructured palladium on porous carbon as the cathode material for Li?O2 cells. Scanning transmission electron microscopy showed discrete crystalline nanoparticles decorating the surface of the porous carbon support, where the size could be controlled in the range of 2?8 nm and depended on the number of Pd ALD cycles performed. X-ray absorption spectroscopy at the Pd K-edge revealed that the carbon supported Pd existed in a mixed phase of metallic palladium and palladium oxide. The conformality of ALD allowed us to uniformly disperse the Pd catalyst onto the carbon support while preserving the initial porous structure. As a result, the charging and discharging performance of the oxygen cathode in a Li?O2 cell was improved. Our results suggest that ALD is a promising technique for tailoring the surface composition and structure of nanoporous supports in energy storage devices.
Research at Argonne National Laboratory was funded by U.S. Department of Energy, FreedomCAR and Vehicle Technologies Office. Y.L. was supported as part of the Institute for Atom-efficient Chemical Transformations (IACT), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. J.W.E. was supported by the Center for Electrical Energy Storage: Tailored Interfaces, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. J.L. was supported by the Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Postdoctoral Research Award under the EERE Vehicles Technology Program. This work was also supported by the Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government, Ministry of Knowledge and Economy (No. 20114010203150), and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2009-0092780). Use of the Advanced Photon Source and research carried out in the Electron Microscopy Center at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. MRCAT operations are supported by the Department of Energy under Contract No. DE-AC02-06CH11357 and the MRCAT member institutions.
en
American Chemical Society
atomic layer deposition
Li?O2 battery
oxygen evolution reaction
oxygen reduction reaction
palladium nanoparticles
Synthesis of Porous Carbon Supported Palladium Nanoparticle Catalysts by Atomic Layer Deposition: Application for Rechargeable Lithium-O-2 Battery
Article
9
13
10.1021/nl401833p
4182-4189
NANO LETTERS
Lei, Yu
Lu, Jun
Luo, Xiangyi
Wu, Tianpin
Du, Peng
Zhang, Xiaoyi
Ren, Yang
Wen, Jianguo
Miller, Dean J.
Sun, Yang-Kook
2013011384
S
COLLEGE OF ENGINEERING[S]
DEPARTMENT OF ENERGY ENGINEERING
yksun