Intermediate-Temperature Ceramic Fuel Cells with Thin Film Yttrium-Doped Barium Zirconate Electrolytes

被引：152

作者：

Shim, Joon Hyung ^{[1
]}

Park, Joong Sun ^{[1
]}

An, Jihwan ^{[1
]}

Guer, Turgut M. ^{[2
]}

Kang, Sangkyun ^{[3
]}

Prinz, Fritz B. ^{[1
,2
]}

机构：

[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[3] Samsung Elect, Samsung Adv Inst Technol, Giheung, Gyeonggi Do, South Korea

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 14期

关键词：

ATOMIC-LAYER DEPOSITION; CONDUCTION; ZRO2; STABILITY; OXIDES; WATER; NONSTOICHIOMETRY; PRECURSORS; TRANSPORT; CATHODE;

D O I：

10.1021/cm900820p

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Structural and microstructural properties as well as the fuel cell performance of anhydrous proton conducting yttria-doped barium zirconate (BYZ) membranes were investigated. The membranes were nominally about 100 nm thick and were fabricated by both atomic layer deposition (ALD) and pulsed laser deposition (PLD) techniques on micromachined Si substrates. Electrochemical cells (H-2, Pt/BYZ/Pt, air) were fabricated using porous platinum electrodes deposited by sputtering. The cells were tested in the temperature regime 200-450 degrees C. Power densities of 136 mW/cm(2) at 400 degrees C employing a BYZ membrane fabricated by ALD and 120 mW/cm(2) at 450 degrees C employing a BYZ fabricated by PLD clearly represent the highest reported values in the literature at these temperatures. The difference in the cell performances for the ALD BYZ versus PLD BYZ membranes is attributed to differences in their surface morphology and interfacial microstructure.

引用

页码：3290 / 3296

页数：7

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