无机材料学报2011，Vol.26Issue(8)：807-812,6.DOI:10.3724/SP.J.1077.2011.00807
PMMA造孔剂对固体氧化物电解池制氢性能的影响
Effect of PMMA Pore Former on Hydrogen Production Performance of Solid Oxide Electrolysis Cells
摘要
Abstract
To reduce the diffusion resistance, improve the energy efficiency and extend the life of solid oxide electrolysis cells (SOEC), the porosity and microstructure optimization of SOEC cathode support layer were studied. Po-lymethyl methacrylate(PMMA)was added into the cathode as an alternative of starch for pore formation. The experimental results show that the porosity of cathode reaches 45% with conductivity of 6726 S/cm when the PMMA content is 10wt%. The round micro-pores formed by PMMA are well distributed with an average diameter of about 10 μm, which not only significantly reduce the gas diffusion resistance and increase the mechanical strength of cathode materials, but also improve largely the electrolysis efficiency, stability and hydrogen production performance of the SOEC. After the microstructure modification and optimization of cathode layer, the hydrogen production rate of SOEC using PMMA pore former can reach 175mL/(cm2·h), which is 1.5 times of the hydrogen production rate of starch. Also their steam diffusion resistance reduce 50% at 850℃ and 1.3V electrolysis voltage, which indicates that PMMA is a very promising candidate for the application of SOEC technology.关键词
高温固体氧化物电解池/核能制氢/微观结构/阴极支撑层/扩散Key words
solid oxide electrolysis cells(SOEC)/nuclear hydrogen production/microstructure modification/cathode support layer/diffusion分类
化学工程引用本文复制引用
于波,张文强,梁明德,张平,徐景明..PMMA造孔剂对固体氧化物电解池制氢性能的影响[J].无机材料学报,2011,26(8):807-812,6.基金项目
国家科技重大专项基金(2010ZX06901) （2010ZX06901）
国家自然科学基金(20803039) （20803039）
