Electrochemical performance of LaNiO–CeLaO as a promising bifunctional oxygen electrode for reversible solid oxide cells

被引：0

作者：

Pengzhang LI ^{[1
]}

Wei YANG ^{[1
]}

Chuanjin TIAN ^{[1
]}

Wenyan ZHAO ^{[1
]}

Zhe L ^{[2
]}

Zhipeng XIE ^{[1
,3
]}

ChangAn WANG ^{[1
,3
]}

机构：

[1] School of Materials Science and Engineering, Jingdezhen Ceramic Institute

[2] School of Physics, Harbin Institute of Technology

[3] State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University

来源：

Journal of Advanced Ceramics | 2021年 / 02期

关键词：

D O I：

暂无

中图分类号：

TM91 [独立电源技术（直接发电）]; TB34 [功能材料];

学科分类号：

0808 ; 080501 ;

摘要：

In this work, La2NiO4+δ–xCe0.55La0.45O2–δ（denoted as LNO–x LDC） with various LDC contents（x = 0, 10, 20, 30, and 40 wt%） were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells（RSOCs）. Compared with the pure LNO, the optimum composition of LNO–30 LDC exhibited the lowest polarization resistance（Rp） of 0.53 and 0.12 ?·cm2 in air at 650 and 750 ℃, respectively. The enhanced electrochemical performance of LNO–30 LDC oxygen electrode was mainly attributed to the extended triple phase boundary and more oxygen ionic transfer channels. The hydrogen electrode supported single cell with LNO–30 LDC oxygen electrode displayed peak power densities of 276, 401, and 521 mW·cm–2 at 700, 750, and 800 ℃, respectively. Moreover, the electrolysis current density of the single cell demonstrated 526.39 mA·cm–2 under 1.5 V at 800 ℃, and the corresponding hydrogen production rate was 220.03 m L·cm–2·h–1. The encouraging results indicated that LNO–30 LDC was a promising bifunctional oxygen electrode material for RSOCs.

引用

页码：328 / 340

页数：13

共 45 条

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