Scholarlink

<p>Transforming waste carbon into valuable fuels and chemicals is a key step toward sustainable manufacturing. One promising approach is the electrochemical conversion of carbon monoxide (CO), a product of CO<sub>2</sub> recycling, into energy-rich multicarbon (C<sub>2+</sub>) compounds. However, current CO electrolyzers rely on anion exchange membranes (AEMs) that degrade over time when exposed to organic intermediates, limiting their practical use. Here we show that low-cost diaphragm materials, such as Zirfon, can serve as robust alternatives to AEMs in alkaline CO electrolysis. We evaluate a range of diaphragms and identify candidates that match or exceed the performance of commercial AEMs across a wide range of operating conditions (50 to 400 mA cm<sup>−2</sup>). At 60 °C, Zirfon-based cells maintain 45% Faradaic efficiencies for acetate over 250 hours, while state-of-the-art AEMs fail within 150 hours. Moreover, a 100 cm<sup>2</sup> Zirfon cell operates stably for 700 hours at 200 mA cm<sup>−2</sup>. These findings demonstrate that diaphragms offer a scalable and durable pathway for CO electrolysis, helping reduce system costs and enhance compatibility with renewable energy inputs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Diaphragm-based carbon monoxide electrolyzers for multicarbon production under alkaline conditions

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月26日

查看全文
  • Wanyu Deng,
  • Siyang Xing,
  • Guilherme Warwick Parker Maia,
  • Zhaoxi Wang,
  • Bradie S. Crandall,
  • Feng Jiao

摘要

Transforming waste carbon into valuable fuels and chemicals is a key step toward sustainable manufacturing. One promising approach is the electrochemical conversion of carbon monoxide (CO), a product of CO2 recycling, into energy-rich multicarbon (C2+) compounds. However, current CO electrolyzers rely on anion exchange membranes (AEMs) that degrade over time when exposed to organic intermediates, limiting their practical use. Here we show that low-cost diaphragm materials, such as Zirfon, can serve as robust alternatives to AEMs in alkaline CO electrolysis. We evaluate a range of diaphragms and identify candidates that match or exceed the performance of commercial AEMs across a wide range of operating conditions (50 to 400 mA cm−2). At 60 °C, Zirfon-based cells maintain 45% Faradaic efficiencies for acetate over 250 hours, while state-of-the-art AEMs fail within 150 hours. Moreover, a 100 cm2 Zirfon cell operates stably for 700 hours at 200 mA cm−2. These findings demonstrate that diaphragms offer a scalable and durable pathway for CO electrolysis, helping reduce system costs and enhance compatibility with renewable energy inputs.