Integrated Intelligent Energy ›› 2022, Vol. 44 ›› Issue (8): 86-90.doi: 10.3969/j.issn.2097-0706.2022.08.009

• Cell System with Proton Conducting Electrolyte • Previous Articles     Next Articles

Preparation and performance study of tubular protonic ceramic fuel cells

YAN Xueling(), PAN Xiang, REN Keke, HUANG Rong, CHENG Jigui, HONG Tao*()   

  1. School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China
  • Received:2022-06-17 Revised:2022-07-23 Online:2022-08-25 Published:2022-09-15
  • Contact: HONG Tao E-mail:2275426549@qq.com;taoh@hfut.edu.cn

Abstract:

Proton ceramic fuel cells (PCFCs) attract great attention for being of lower operating temperatures than solid oxide fuel cells.Furthermore,tubular PCFCs are of higher power density and higher mechanical strength compared with planar PCFCs.To simplify the preparation of large-size tubular PCFCs,hollow glass tubes with tiny pores at their tops are taken as the preparation mold for the anode supporting layers,and the NiO-BaCe0.7Zr0.1Y0.1Yb0.1O3(BCZYYb) anode support is made from raw material powder by one-step preparation based on phase inversion mechanism.To reduce the impact of the ceramic substrates on the tubular PCFC electrolyte ceramic films,various sintering methods are explored.The scanning electron microscope(SEM) image of an anode support after high-temperature co-sintering presents that there are a large number of connected pores in the anode support.Dip-coating method provide the anode support with a 30 μm dense BZCYYb electrolyte layer.At 600 ℃,the power density of the tubular PCFC with humid hydrogen as fuel and ambient air as oxidant can peak at 80 mW/cm2,and the ohmic resistance and polarization resistance can reach 14 Ω·cm2 and 16 Ω·cm2,respectively.The one-step preparation method integrated phase inversion mechanism and solid reaction sintering can make tubular PCFCs from raw materials powder,which can be applied to large-scale tubular PCFC production.

Key words: proton ceramic fuel cell, tubular cell, phase inversion, solid reactive sinter, electrochemical performance