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Ultra-Low Cost Polypropylene Cloth Web-Reinforced EPDM Rubber-ZrO<sub>2</sub> Composite Porous Membrane for Alkaline Water Electrolysis

アルカリ水電解用の超低コストポリプロピレン布強化EPDMゴム-ZrO2複合多孔質膜 (AI 翻訳)

Ganesh I

Research Squareプレプリント2026-08-10#水素経営インパクト: コスト削減対象セクター: power
DOI: 10.20944/preprints202608.0638.v1
原典: https://doi.org/10.20944/preprints202608.0638.v1

🤖 gxceed AI 要約

日本語

本研究は、アルカリ水電解用の超低コストなPP布強化EPDMゴム-ZrO2複合多孔質膜を開発し、市販のZirfon膜と同等の性能を示した。HERおよびOERの過電圧はそれぞれ200mV未満、400mV未満で、100mA/cm2以上の電流密度を達成した。SEM/EDAX分析により、膜の多孔性と細孔構造が性能に影響することが示された。

English

This study develops an ultra-low-cost PP cloth-reinforced EPDM rubber-ZrO2 composite porous membrane for alkaline water electrolysis, achieving performance comparable to commercial Zirfon membranes. Overpotentials for HER and OER are below 200 mV and 400 mV, respectively, with current densities exceeding 100 mA/cm2. SEM/EDAX analysis reveals that porosity and pore structure influence performance.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本は水素社会の実現を目指しており、グリーン水素の低コスト製造技術は重要。この膜技術は、再生可能エネルギー由来の水素製造コスト低減に寄与し、福島水素エネルギー研究フィールドなどのプロジェクトに応用可能。

In the global GX context

Globally, reducing the cost of green hydrogen is critical for the energy transition. This membrane technology offers a low-cost alternative for alkaline electrolyzers, supporting the scale-up of renewable hydrogen production, which aligns with international efforts like the Hydrogen Council and national strategies.

👥 読者別の含意

🔬研究者:Provides a low-cost membrane alternative for alkaline electrolysis, with detailed performance data and structural analysis.

🏢実務担当者:Could be used by electrolyzer manufacturers to reduce system costs and improve economic viability of green hydrogen production.

🏛政策担当者:Highlights a technology that could lower the cost of green hydrogen, supporting policy goals for decarbonization and energy security.

📄 Abstract（原文）

Ultra-low cost membranes or porous separators are required to develop affordable alkaline electrolyzer stacks to generate green hydrogen as a part of harvesting sunlight at every home to meet all the energy needs of the society without any back-up from fossil fuels. The ultra-low cost polypropylene (PP) cloth web-reinforced EPDM rubber-ZrO2 composite porous membranes are fabricated and evaluated for alkaline water electrolysis reaction by following the cyclic voltammetry (CV) and controlled potential bulk electrolysis (CPBE) techniques. When the thickness of this EPDM rubber-ZrO2 based membrane was maintained at around 570 micrometer, it exhibited the performance exactly similar to the one exhibited by the commercial Zirfon® perl membrane at ambient conditions. The overpotentials noted for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) are less than 200 mV and 400 mV, respectively, when the cathodic and anodic compartments were separated by this rubber based porous membrane. Current densities (i.e., the rate of product formation) &gt;100 mA/cm2 are also noted, which is a must for practicing this reaction at industry with economic viability. The SEM and EDAX studies revealed that the EPDM rubber-ZrO2 based membranes prepared in this study contains the disconnected spherical shaped pores with relatively low porosity, whereas, the commercial zirfon membrane contains open pores with inter connected porosity with much higher porosity. This study suggests that by optimizing the processing parameters, the porosity, pore size distribution and pore diameters of the EPDM rubber based membranes can be improved to the required levels.

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