Nickel-Copper/Gadolinium-Doped Ceria (CGO) Composite Electrocatalyst as a Protective Layer for a Solid-Oxide Fuel Cell Anode Fed with Ethanol

被引：22

作者：

Lo Faro, Massimiliano ^{[1
]}

Reis, Rafael M. ^{[2
]}

Saglietti, Guilherme G. A. ^{[2
]}

Sato, Andre G. ^{[2
]}

Ticianelli, Edson A. ^{[2
]}

Zignani, Sabrina C. ^{[1
,2
]}

Arico, Antonio S. ^{[1
]}

机构：

[1] CNR ITAE, Via Salita S Lucia Contesse 5, I-98126 Messina, Italy

[2] Inst USP IQSC, BR-13560970 Sao Carlos, SP, Brazil

来源：

CHEMELECTROCHEM | 2014年 / 1卷 / 08期

关键词：

copper; electrochemistry; ethanol; fuel cells; nickel; CONVERSION; CATALYSTS; IMPROVEMENT; BIOETHANOL; METHANOL; BIOMASS; SOFCS;

D O I：

10.1002/celc.201402017

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A nickel-copper alloy is prepared by using the oxalate method and subsequent in situ reduction. The bimetallic alloy is mixed with gadolinium-doped ceria (CGO) to obtain a composite material with mixed electronic-ionic conductivity. The catalytic and electrocatalytic properties of the composite material for ethanol conversion are described. Different conditions to simulate bio-ethanol feed operation are selected. Electrochemical tests are performed by utilizing the Ni-Cu/CGO cermet as a barrier layer in a conventional anode-supported solid-oxide fuel cell (AS-SOFC). A comparative study between the modified cell and a conventional AS-SOFC without the protective layer is made. A maximum power density of 277 mW cm(-2)@0.63 V is recorded in the presence of a mixture of ethanol-water for a cell containing the protective anodic layer compared with 231 mW cm(-2)@0.64 V for a bare cell under the same conditions. This corresponds to a 20% increase in performance.

引用

页码：1395 / 1402

页数：8

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