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

• 研究论文 • 上一篇    下一篇

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. 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 LIU1,2,Jiang LIU1()   

  1. 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:

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

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