流延法制备单片式直接碳固体氧化物燃料电池组及其性能研究

doi:10.15541/jim20180345

无机材料学报 ›› 2019, Vol. 34 ›› Issue (5): 509-514.DOI: 10.15541/jim20180345 CSTR: 32189.14.10.15541/jim20180345

流延法制备单片式直接碳固体氧化物燃料电池组及其性能研究

汪维¹,苑莉莉¹,丘倩媛¹,周明扬¹,刘美林^1,²,刘江¹()

^1. 华南理工大学环境与能源学院, 新能源研究所, 广州市能源材料表面化学重点实验室, 广州 510006
^2. 美国佐治亚理工学院材料科学与工程系, 亚特兰大GA 30332-0245, 美国

收稿日期:2018-07-26 修回日期:2018-10-28 出版日期:2019-05-20 网络出版日期:2019-05-14
作者简介:汪维(1993-), 女, 硕士研究生. E-mail:823442499@qq.com
基金资助:
国家自然科学基金(91745203);国家自然科学基金(U1601207);广东省公共研究与能力建设专项基金(2014A010106008);广东省引进创新创业团队项目(2014ZT05N200)

A Direct Carbon Solid Oxide Fuel Cell Stack Based on a Single Electrolyte Plate Fabricated by Tape Casting Technique

Wei WANG¹,Li-Li YUAN¹,Qian-Yuan QIU¹,Ming-Yang ZHOU¹,Mei-Lin LIU^1,²,Jiang LIU¹()

^1. Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
^2. School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta GA 30332-0245, USA;

Received:2018-07-26 Revised:2018-10-28 Published:2019-05-20 Online:2019-05-14
Supported by:
National Natural Science Foundation of China(91745203);National Natural Science Foundation of China(U1601207);The Special Funds of Guangdong Province Public Research and Ability Construction(2014A010106008);Guangdong Innovative, Entrepreneurial Research Team Program(2014ZT05N200)

摘要/Abstract

摘要：

本研究针对小型电源应用, 提出一种基于单片电解质的直接碳固体氧化物燃料电池组的设计和制备方法。采用流延成型的工艺制备YSZ平板式电解质, 通过在生坯上打孔作为电解质两侧电极的电连接通道, 在单片电解质平板上制备四节串联的电池组, 有效面积为5.6 cm ²。采用5 g担载5wt% Fe催化剂的活性炭为燃料, 对电池组的输出性能及稳定性进行测试。结果表明: 850 ℃下电池组的开路电压为3.80 V, 最大输出功率为1.66 W, 对应的功率密度为296 mW×cm ^-2。同时, 测得的四节串联电池组中的第一节单电池的最大输出功率密度为294 mW×cm ^-2, 说明该电池组中各单电池一致性良好。在800 ℃下, 电池组在300 mA的恒电流下放电11 h, 放电容量为8.42 W×h, 燃料利用率达到了~30%。本研究可以为开发直接碳固体氧化物燃料电池在便携式和分布式电源方面的应用提供参考依据。

关键词: 固体氧化物燃料电池, 单片电池组, 碳燃料, 流延成型法

Abstract:

A direct carbon solid oxide fuel cell stack based on a single electrolyte plate was proposed and investigated for applications in small-scale power supplies. YSZ electrolyte plates were fabricated through tape casting technique. Small holes, contributing to electrical connection between the electrodes on opposite sides of the electrolyte, were punched on the green electrolyte plates. A stack with four cells electrically connected in series was prepared, whose total effective area was 5.6 cm ². The 4-cell-stack was tested with 5 g Fe-loaded (5wt%) activated carbon as fuel and ambient air as oxidant. The stack gave an open circuit voltage of 3.80 V and the a peak power of 1.66 W, corresponding to a power density of 296 mW×cm ^-2 at 850 ℃. Meanwhile, the peak power density of the first cell of the stack was 294 mW×cm ^-2, suggesting good consistency among the four cells constituting the stack. The stack discharged at a constant current of 300 mA for 11 h at 800 ℃, giving a discharging energy of 8.42 W×h and fuel utilization of 30%. This work shows the promise of developing DC-SOFCs for portable and distributed applications.

Key words: solid oxide fuel cell, single planar stack, carbon fuel, tape casting

中图分类号:

TM911

汪维, 苑莉莉, 丘倩媛, 周明扬, 刘美林, 刘江. 流延法制备单片式直接碳固体氧化物燃料电池组及其性能研究[J]. 无机材料学报, 2019, 34(5): 509-514.

Wei WANG, Li-Li YUAN, Qian-Yuan QIU, Ming-Yang ZHOU, Mei-Lin LIU, Jiang LIU. A Direct Carbon Solid Oxide Fuel Cell Stack Based on a Single Electrolyte Plate Fabricated by Tape Casting Technique[J]. Journal of Inorganic Materials, 2019, 34(5): 509-514.

图/表 6

图1 YSZ电解质支撑的四节串联电池组示意图

Fig. 1 Schematic diagram of YSZ electrolyte-supported 4-cell-stack

图2 四节串联电池组(a)示意图和(b)实物图

Fig. 2 Diagrammatic drawing (a) and physical map (b) of 4-cell-stack

图3 (a)DC-SOFC, (b)YSZ电解质, (c)阴极和电解质界面, (d)阳极和电解质界面的截面微观照片

Fig. 3 Cross-sectional microstructures of DC-SOFC (a), YSZ electrolyte (b), interface between cathode and electrolyte (c), interface between anode and electrolyte (d)

图4 4节串联电池组中第一节电池的(a)输出性能, (b)开路下的阻抗谱图(插图为放大图和等效电路图), (c) YSZ的Arrhenius曲线

Fig. 4 Output performance (a), impedance spectra under OCV of the first cell of the 4-cell-stack with insets showing magnified spectra and equivalent circuit (b) and Arrhenius plot for YSZ (c)

图5 四节串联的电池组在不同温度下的(a)输出性能, (b)开路下的阻抗谱图(插图为放大图)

Fig. 5 Output performance (a) and impedance spectra under OCV (b) of 4-cell-stack of DC-SOFC operated at different temperatures with inset showing magnified spectra

图6 4节串联电池组在800 ℃、300 mA下的放电性能图

Fig. 6 Discharge characteristic of the 4-cell-stack at 800 ℃ and 300 mA

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流延法制备单片式直接碳固体氧化物燃料电池组及其性能研究

A Direct Carbon Solid Oxide Fuel Cell Stack Based on a Single Electrolyte Plate Fabricated by Tape Casting Technique

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