Preparation and properties of water-based electrolyte diaphragm by tape casting

YANG Guanjun; ZHANG Ruiyun; LU Chengzhuang; WANG Pengjie; WANG Jinyi; HUANG Hua; WANG Ju

doi:10.19666/j.rlfd.202205069

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Preparation and properties of water-based electrolyte diaphragm by tape casting

Thermal Power Generation Vol. 51, Issue 11, Pages: 115-120(2022)

更新时间：2025-09-28

- Preparation and properties of water-based electrolyte diaphragm by tape casting
- 作者机构：
  
  1. 中国华能集团清洁能源技术研究院有限公司
  2. 清华大学能源与动力工程系
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202205069
  CLC： TB383.2;TM911.4
- Published：2022
- 稿件说明：
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YANG Guanjun, ZHANG Ruiyun, LU Chengzhuang, et al. Preparation and properties of water-based electrolyte diaphragm by tape casting[J]. Thermal Power Generation, 2022, 51(11): 115-120.
DOI：

YANG Guanjun, ZHANG Ruiyun, LU Chengzhuang, et al. Preparation and properties of water-based electrolyte diaphragm by tape casting[J]. Thermal Power Generation, 2022, 51(11): 115-120. DOI： 10.19666/j.rlfd.202205069.

摘要

因为水基电解质隔膜流延法制备具有高效、低成本、低污染等优点，故提出了一种以流延机制备电解质隔膜工艺过程，主要针对以α-LiAlO2为粉料，蒸馏水和聚乙烯醇（PVA）的混合溶液为黏结剂，通过流延机流延制备大面积高强度环保型的水基电解质隔膜，并对隔膜和电池性能进行了测试。结果表明：所制备水基隔膜平均孔径为0.217μm，孔隙率为61.63%，通过组装1.5kW电堆进行实验验证，0.7V恒电压下放电最大功率在1.718kW，比设定值1.5kW超过13%，功率稳定输出在1.5kW运行超过了900h。该研究为后期大功率熔融碳酸盐燃料电池研发奠定基础。

Abstract

The preparation of water-based electrolyte diaphragm by tape casting method has the characteristics of high efficiency

low cost and low pollution. A process of preparing electrolyte diaphragm by tape casting mechanism was proposed

which used α-Li AlO2 as powder and the mixed solution of distilled water and polyvinyl alcohol(PVA) as binder. A large-area

high-strength and environment-friendly water-based electrolyte diaphragm was prepared by tape casting in a tape casting machine. Moreover

the performances of the diaphragm and fuel cell were tested. The results showed that

the average pore diameter of the prepared water-based diaphragm was 0.217 μm

and the porosity was 61.63%. Through assembling a 1.5 kW stack

it was experimentally verified that the maximum discharge power at constant voltage(0.7 V) was 1.718 kW

which was 13% higher than the set value(1.5 kW). The power output was stable at 1.5 kW for more than 900 hours. The research laied the foundation for later researches and developments of high-power molten carbonate fuel cell.

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