解耦(概率)
电解
电解质
海水
电合成
氯
化学
材料科学
环境科学
化学工程
电化学
电极
海洋学
工程类
有机化学
地质学
控制工程
物理化学
作者
Wenxin Zhu,Ziyi Wei,Yiyue Ma,Meirong Ren,Fei Xue,Min Li,Chunyu Zhang,Jianlong Wang,Shaojun Guo
标识
DOI:10.1002/anie.202319798
摘要
Direct saline (seawater) electrolysis is a well‐recognized system to generate active chlorine species for the chloride‐mediated electrosynthesis, environmental remediation and sterilization over the past few decades. However, the large energy consumption originated from the high cell voltage of traditional direct saline electrolysis system, greatly restricts its practical application. Here, we report an acid‐saline hybrid electrolysis system for energy‐saving co‐electrosynthesis of active chlorine and H2. We demonstrate that this system just requires a low cell voltage of 1.59 V to attain 10 mA cm‐2 with a large energy consumption decrease of 27.7% compared to direct saline electrolysis system (2.20 V). We further demonstrate that such acid‐saline hybrid electrolysis system can be extended to realize energy‐saving and sustainable seawater electrolysis. The acidified seawater in this system can absolutely avoid the formation of Ca/Mg‐based sediments that always form in the seawater electrolysis system. We further prove that this system in the half‐flow mode can realize real‐time preparation of active chlorine for rapid sterilization.
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