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Research Topics

隨著全球暖化與能源危機問題日益嚴重，如何有效降低二氧化碳排放並建立可循環利用之碳資源技術，已成為能源與環境領域的重要研究方向。利用再生能源驅動之二氧化碳電化學還原反應(CO₂ Reduction Reaction, CO₂RR)，可將CO₂轉換為一氧化碳、甲酸及碳氫化合物等高附加價值產物，不僅能降低溫室氣體排放，同時具備能源儲存與碳循環再利用之潛力，因此受到廣泛關注。

 

目前二氧化碳電解系統仍面臨高過電位、低能量效率、觸媒穩定性不足及長時間操作衰退等問題。其中，零間隙型鹼性陰離子交換膜(Anion Exchange Membrane, AEM)電解槽因具有低內阻、高反應效率與可操作高電流密度等優勢，被視為未來高效CO₂電解技術的重要發展方向。然而，其系統中的陰極二氧化碳還原反應、陽極析氧反應、膜內離子傳輸與水管理機制仍需進一步優化。

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With the increasing severity of global warming and the ongoing energy crisis, developing effective technologies for reducing carbon dioxide (CO₂) emissions and establishing sustainable carbon utilization pathways has become a critical research focus in the fields of energy and environmental science. Electrochemical carbon dioxide reduction (CO₂ Reduction Reaction, CO₂RR), powered by renewable energy sources, offers a promising approach for converting CO₂ into value-added products such as carbon monoxide (CO), formate, and various hydrocarbons. This technology not only contributes to the mitigation of greenhouse gas emissions but also provides opportunities for energy storage and carbon recycling, making it an attractive strategy for achieving a carbon-neutral future.

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Despite significant progress, current CO₂ electrolysis systems still face several challenges, including high overpotentials, limited energy efficiency, insufficient catalyst stability, and performance degradation during long-term operation. Among the various reactor configurations, zero-gap alkaline anion exchange membrane (AEM) electrolyzers have attracted considerable attention due to their low internal resistance, high reaction efficiency, and capability to operate at industrially relevant current densities. Consequently, AEM-based CO₂ electrolyzers are regarded as one of the most promising technologies for next-generation high-efficiency CO₂ conversion systems. However, further optimization is still required in key areas, including the cathodic CO₂ reduction reaction, anodic oxygen evolution reaction (OER), ion transport through the membrane, and water management within the electrolyzer.