Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts

N. Todoroki; Y. Bando; Y. Tani; S. Kaneko; H. Watanabe; T. Wadayama

doi:10.1149/07514.0741ecst

Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts

N. Todoroki, Y. Bando, Y. Tani, S. Kaneko, H. Watanabe, T. Wadayama

ENV - Frontier Science for Advanced Environment

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We investigated surface structures and electrochemical stabilities for Pt/Pd(111) bimetallic surfaces fabricated using molecular beam epitaxy. The Pt/Pd(111) surfaces were prepared by depositing four monolayer (ML)-thick Pt onto Pd(111) at substrate temperatures of 300 °C. The oxygen reduction reaction (ORR) activity of the pristine 4ML-Pt/Pd(111) surface was ca. 4.5 times higher than that of clean Pt(111). Electrochemical stabilities were evaluated by applying square-wave potential cycles (PCs) between 0.6 and x V (x = 0.8, 0.85, 0.9 and 1.0; xV-PCs) in O2-saturated 0.1 M HClO4 at 80 °C. Although the 0.9V-and 1.0V-PCs cause ORR deactivation, the pristine ORR activities remained nearly unchanged by the 0.8V-and 0.85V-PCs even after 5000 PCs. The results suggest that the electrochemical structural stability of Pt/Pd core-shell type catalysts depends on the cell voltages used under the practical operating conditions of polymer electrolyte fuel cells.

Original language	English
Title of host publication	Polymer Electrolyte Fuel Cells 16, PEFC 16
Editors	D. J. Jones, H. Uchida, H. A. Gasteiger, K. Swider-Lyons, F. N. Buchi, P. N. Pintauro, B. S. Pivovar, K. E. Ayers, K. A. Perry, P. Shirvanian, A. Z. Weber, V. K. Ramani, P. Strasser, R. A. Mantz, K. Shinohara, S. Mitsushima, C. Coutanceau, J. M. Fenton, T. J. Schmidt, T. F. Fuller, S. R. Narayanan, Y. T. Kim, L. Zhuang, S. G. Sun
Publisher	Electrochemical Society Inc.
Pages	741-746
Number of pages	6
Edition	14
ISBN (Electronic)	9781607687313, 9781607687672, 9781607687689, 9781607687696, 9781607687702, 9781607687719, 9781607687726, 9781607687733, 9781607687740, 9781607687757, 9781607687771, 9781607687788, 9781607687795, 9781607687801, 9781607687818, 9781607687825, 9781607687832, 9781607687849, 9781607687856, 9781607687863, 9781607687887, 9781607687894, 9781607687900, 9781607687917, 9781607687924, 9781607687931, 9781607687948, 9781607687955, 9781607687962, 9781607687979, 9781607687986, 9781607687993, 9781607688006, 9781607688013, 9781607688020, 9781607688037
DOIs	https://doi.org/10.1149/07514.0741ecst
Publication status	Published - 2016
Event	Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting - Honolulu, United States Duration: 2016 Oct 2 → 2016 Oct 7

Publication series

Name	ECS Transactions
Number	14
Volume	75
ISSN (Print)	1938-6737
ISSN (Electronic)	1938-5862

Conference

Conference	Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting
Country/Territory	United States
City	Honolulu
Period	16/10/2 → 16/10/7

Access to Document

10.1149/07514.0741ecst

Cite this

Todoroki, N., Bando, Y., Tani, Y., Kaneko, S., Watanabe, H., & Wadayama, T. (2016). Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts. In D. J. Jones, H. Uchida, H. A. Gasteiger, K. Swider-Lyons, F. N. Buchi, P. N. Pintauro, B. S. Pivovar, K. E. Ayers, K. A. Perry, P. Shirvanian, A. Z. Weber, V. K. Ramani, P. Strasser, R. A. Mantz, K. Shinohara, S. Mitsushima, C. Coutanceau, J. M. Fenton, T. J. Schmidt, T. F. Fuller, S. R. Narayanan, Y. T. Kim, L. Zhuang, ... S. G. Sun (Eds.), Polymer Electrolyte Fuel Cells 16, PEFC 16 (14 ed., pp. 741-746). (ECS Transactions; Vol. 75, No. 14). Electrochemical Society Inc.. https://doi.org/10.1149/07514.0741ecst

Todoroki, N. ; Bando, Y. ; Tani, Y. et al. / Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts. Polymer Electrolyte Fuel Cells 16, PEFC 16. editor / D. J. Jones ; H. Uchida ; H. A. Gasteiger ; K. Swider-Lyons ; F. N. Buchi ; P. N. Pintauro ; B. S. Pivovar ; K. E. Ayers ; K. A. Perry ; P. Shirvanian ; A. Z. Weber ; V. K. Ramani ; P. Strasser ; R. A. Mantz ; K. Shinohara ; S. Mitsushima ; C. Coutanceau ; J. M. Fenton ; T. J. Schmidt ; T. F. Fuller ; S. R. Narayanan ; Y. T. Kim ; L. Zhuang ; S. G. Sun. 14. ed. Electrochemical Society Inc., 2016. pp. 741-746 (ECS Transactions; 14).

@inproceedings{4e72fbd6249c49f0aaafb133710b1eb3,

title = "Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts",

abstract = "We investigated surface structures and electrochemical stabilities for Pt/Pd(111) bimetallic surfaces fabricated using molecular beam epitaxy. The Pt/Pd(111) surfaces were prepared by depositing four monolayer (ML)-thick Pt onto Pd(111) at substrate temperatures of 300 °C. The oxygen reduction reaction (ORR) activity of the pristine 4ML-Pt/Pd(111) surface was ca. 4.5 times higher than that of clean Pt(111). Electrochemical stabilities were evaluated by applying square-wave potential cycles (PCs) between 0.6 and x V (x = 0.8, 0.85, 0.9 and 1.0; xV-PCs) in O2-saturated 0.1 M HClO4 at 80 °C. Although the 0.9V-and 1.0V-PCs cause ORR deactivation, the pristine ORR activities remained nearly unchanged by the 0.8V-and 0.85V-PCs even after 5000 PCs. The results suggest that the electrochemical structural stability of Pt/Pd core-shell type catalysts depends on the cell voltages used under the practical operating conditions of polymer electrolyte fuel cells.",

author = "N. Todoroki and Y. Bando and Y. Tani and S. Kaneko and H. Watanabe and T. Wadayama",

note = "Publisher Copyright: {\textcopyright} 2016 The Electrochemical Society.; Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting ; Conference date: 02-10-2016 Through 07-10-2016",

year = "2016",

doi = "10.1149/07514.0741ecst",

language = "English",

series = "ECS Transactions",

publisher = "Electrochemical Society Inc.",

number = "14",

pages = "741--746",

editor = "Jones, {D. J.} and H. Uchida and Gasteiger, {H. A.} and K. Swider-Lyons and Buchi, {F. N.} and Pintauro, {P. N.} and Pivovar, {B. S.} and Ayers, {K. E.} and Perry, {K. A.} and P. Shirvanian and Weber, {A. Z.} and Ramani, {V. K.} and P. Strasser and Mantz, {R. A.} and K. Shinohara and S. Mitsushima and C. Coutanceau and Fenton, {J. M.} and Schmidt, {T. J.} and Fuller, {T. F.} and Narayanan, {S. R.} and Kim, {Y. T.} and L. Zhuang and Sun, {S. G.}",

booktitle = "Polymer Electrolyte Fuel Cells 16, PEFC 16",

edition = "14",

}

Todoroki, N, Bando, Y, Tani, Y, Kaneko, S, Watanabe, H & Wadayama, T 2016, Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts. in DJ Jones, H Uchida, HA Gasteiger, K Swider-Lyons, FN Buchi, PN Pintauro, BS Pivovar, KE Ayers, KA Perry, P Shirvanian, AZ Weber, VK Ramani, P Strasser, RA Mantz, K Shinohara, S Mitsushima, C Coutanceau, JM Fenton, TJ Schmidt, TF Fuller, SR Narayanan, YT Kim, L Zhuang & SG Sun (eds), Polymer Electrolyte Fuel Cells 16, PEFC 16. 14 edn, ECS Transactions, no. 14, vol. 75, Electrochemical Society Inc., pp. 741-746, Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting, Honolulu, United States, 16/10/2. https://doi.org/10.1149/07514.0741ecst

Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts. / Todoroki, N.; Bando, Y.; Tani, Y. et al.
Polymer Electrolyte Fuel Cells 16, PEFC 16. ed. / D. J. Jones; H. Uchida; H. A. Gasteiger; K. Swider-Lyons; F. N. Buchi; P. N. Pintauro; B. S. Pivovar; K. E. Ayers; K. A. Perry; P. Shirvanian; A. Z. Weber; V. K. Ramani; P. Strasser; R. A. Mantz; K. Shinohara; S. Mitsushima; C. Coutanceau; J. M. Fenton; T. J. Schmidt; T. F. Fuller; S. R. Narayanan; Y. T. Kim; L. Zhuang; S. G. Sun. 14. ed. Electrochemical Society Inc., 2016. p. 741-746 (ECS Transactions; Vol. 75, No. 14).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts

AU - Todoroki, N.

AU - Bando, Y.

AU - Tani, Y.

AU - Kaneko, S.

AU - Watanabe, H.

AU - Wadayama, T.

PY - 2016

Y1 - 2016

N2 - We investigated surface structures and electrochemical stabilities for Pt/Pd(111) bimetallic surfaces fabricated using molecular beam epitaxy. The Pt/Pd(111) surfaces were prepared by depositing four monolayer (ML)-thick Pt onto Pd(111) at substrate temperatures of 300 °C. The oxygen reduction reaction (ORR) activity of the pristine 4ML-Pt/Pd(111) surface was ca. 4.5 times higher than that of clean Pt(111). Electrochemical stabilities were evaluated by applying square-wave potential cycles (PCs) between 0.6 and x V (x = 0.8, 0.85, 0.9 and 1.0; xV-PCs) in O2-saturated 0.1 M HClO4 at 80 °C. Although the 0.9V-and 1.0V-PCs cause ORR deactivation, the pristine ORR activities remained nearly unchanged by the 0.8V-and 0.85V-PCs even after 5000 PCs. The results suggest that the electrochemical structural stability of Pt/Pd core-shell type catalysts depends on the cell voltages used under the practical operating conditions of polymer electrolyte fuel cells.

AB - We investigated surface structures and electrochemical stabilities for Pt/Pd(111) bimetallic surfaces fabricated using molecular beam epitaxy. The Pt/Pd(111) surfaces were prepared by depositing four monolayer (ML)-thick Pt onto Pd(111) at substrate temperatures of 300 °C. The oxygen reduction reaction (ORR) activity of the pristine 4ML-Pt/Pd(111) surface was ca. 4.5 times higher than that of clean Pt(111). Electrochemical stabilities were evaluated by applying square-wave potential cycles (PCs) between 0.6 and x V (x = 0.8, 0.85, 0.9 and 1.0; xV-PCs) in O2-saturated 0.1 M HClO4 at 80 °C. Although the 0.9V-and 1.0V-PCs cause ORR deactivation, the pristine ORR activities remained nearly unchanged by the 0.8V-and 0.85V-PCs even after 5000 PCs. The results suggest that the electrochemical structural stability of Pt/Pd core-shell type catalysts depends on the cell voltages used under the practical operating conditions of polymer electrolyte fuel cells.

UR - http://www.scopus.com/inward/record.url?scp=84991738453&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84991738453&partnerID=8YFLogxK

U2 - 10.1149/07514.0741ecst

DO - 10.1149/07514.0741ecst

M3 - Conference contribution

AN - SCOPUS:84991738453

T3 - ECS Transactions

SP - 741

EP - 746

BT - Polymer Electrolyte Fuel Cells 16, PEFC 16

A2 - Jones, D. J.

A2 - Uchida, H.

A2 - Gasteiger, H. A.

A2 - Swider-Lyons, K.

A2 - Buchi, F. N.

A2 - Pintauro, P. N.

A2 - Pivovar, B. S.

A2 - Ayers, K. E.

A2 - Perry, K. A.

A2 - Shirvanian, P.

A2 - Weber, A. Z.

A2 - Ramani, V. K.

A2 - Strasser, P.

A2 - Mantz, R. A.

A2 - Shinohara, K.

A2 - Mitsushima, S.

A2 - Coutanceau, C.

A2 - Fenton, J. M.

A2 - Schmidt, T. J.

A2 - Fuller, T. F.

A2 - Narayanan, S. R.

A2 - Kim, Y. T.

A2 - Zhuang, L.

A2 - Sun, S. G.

PB - Electrochemical Society Inc.

T2 - Symposium on Polymer Electrolyte Fuel Cells 16, PEFC 2016 - PRiME 2016/230th ECS Meeting

Y2 - 2 October 2016 through 7 October 2016

ER -

Todoroki N, Bando Y, Tani Y, Kaneko S, Watanabe H, Wadayama T. Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts. In Jones DJ, Uchida H, Gasteiger HA, Swider-Lyons K, Buchi FN, Pintauro PN, Pivovar BS, Ayers KE, Perry KA, Shirvanian P, Weber AZ, Ramani VK, Strasser P, Mantz RA, Shinohara K, Mitsushima S, Coutanceau C, Fenton JM, Schmidt TJ, Fuller TF, Narayanan SR, Kim YT, Zhuang L, Sun SG, editors, Polymer Electrolyte Fuel Cells 16, PEFC 16. 14 ed. Electrochemical Society Inc. 2016. p. 741-746. (ECS Transactions; 14). doi: 10.1149/07514.0741ecst

Surface structures and electrochemical stabilities for Pt/Pd(111) model electrocatalysts

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

Cite this