Thin Film Approach to Single Crystalline Electrochemistry
详细信息 查看全文
- 作者：Joshua Snyder ; Nemanja Danilovic ; Arvydas P. Paulikas ; Dusan Tripkovic ; Dusan Strmcnik ; Nenad M. Markovic ; Vojislav R. Stamenkovic
- 刊名：Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：November 14, 2013
- 年：2013
- 卷：117
- 期：45
- 页码：23790-23796
- 全文大小：315K
- 年卷期：v.117,no.45(November 14, 2013)
- ISSN：1932-7455
文摘
Implementation of single-crystal metal electrodes into standard electrochemical procedures has provided invaluable insight into the structure of and processes occurring at the metal鈥揺lectrolyte interface. However, the accuracy required in their manufacture to provide ideally cut crystals with the lowest possible degree of miscut in conjunction with the amount of material required, especially in the case of precious metals, can make their use highly restrictive. We present here fundamental insight into a general procedure for producing thin metal films containing large, atomically flat (111) terraces without the use of an epitaxial template. Thermal annealing in a controlled atmosphere induces long-range ordering in magnetron sputtered thin metal films deposited on an amorphous substrate. The ordering transition in these thin metal films yields characteristic (111) electrochemical signatures with minimal amount of material and provides an adequate replacement for oriented bulk single crystals. Moreover, this approach can be generalized and applied toward development of a new class of thin-film-based catalysts.