Characterization of electrocatalysts by in situ SAXS and XAS investigations

被引：14

作者：

Haubold, HG ^{[1
]}

Hiller, P ^{[1
]}

Jungbluth, H ^{[1
]}

Vad, T ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1999年 / 38卷

关键词：

electrocatalysts; Pt/C; in situ SAXS; in situ XAS; ASAXS; XANES;

D O I：

10.7567/JJAPS.38S1.36

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Size distributions, oxidation states and surface coverage of Pt catalyst particles on carbon supports were studied by anomalous small angle scattering (ASAXS) and X-ray absorption (XANES) with X-ray energies near the Pt-LS absorption edge. The measurements were performed in electrochemical cells to trace electrochemical reactions in situ as a function of the applied electrochemical potential. In potential sweep experiments combined in situ ASAXS and XAS measurements give direct information on the electrochemical processes of methanol oxidation and iodine adsorption on the catalyst surface.

引用

页码：36 / 39

页数：4

共 5 条

[1] In situ anomalous small-angle X-ray scattering investigation of carbon-supported electrocatalysts [J].

Haubold, HG ;

Wang, XH ;

Goerigk, G ;

Schilling, W .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 (02) :653-658

[2] JUSIFA - A NEW USER-DEDICATED ASAXS BEAMLINE FOR MATERIALS SCIENCE [J].

HAUBOLD, HG ;

GRUENHAGEN, K ;

WAGENER, M ;

JUNGBLUTH, H ;

HEER, H ;

PFEIL, A ;

RONGEN, H ;

BRANDENBERG, G ;

MOELLER, R ;

MATZERATH, J ;

HILLER, P ;

HALLING, H .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1989, 60 (07) :1943-1946

[3]

Haubold HG, 1996, ELEC SOC S, V96, P383

[4] ON THE MECHANISM OF ELECTROCHEMICAL ION TRANSFER-REACTIONS [J].

PECINA, O ;

SCHMICKLER, W ;

SPOHR, E .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 394 (1-2) :29-34

[5]

WIECKOWSKI A, 1996, P 6 INT S EL PROC 18, V96, P322

← 1 →