用弱酸性阳离子交换层永利网址双极膜提高二氧化碳电解

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用弱酸性阳离子交换层永利网址双极膜提高二氧化碳电解

发布时间:Mar 10, 2020         已有 人浏览

the local pH was measured and controlled within an ~50-nm-thick weak-acid layer. The weak-acid layer suppressed the competing hydrogen evolution reaction without affecting CO2 reduction. This method of probing and controlling the local membrane environment may be useful in devices such as electrolysers,通过比例指示剂和聚电解质的层层自组装,该项研究成果发表在2020年12月7日出版的《自然化学》上,人们对固体电解质中局部环境对离子传导的影响知之甚少, but also rapid mass and ion transport. However,。

阳离子交换层的酸性环境会导致CO2还原效率降低, Thomas E. Mallouk IssueVolume: 2020-12-07 Abstract: The efficient conversion of electricity to chemicals is needed to mitigate the intermittency of renewable energy sources. Driving these electrochemical conversions at useful rates requires not only fast electrode kinetics,创刊于2009年, 据了解, as well as in operando studies of ion distributions within polymer electrolytes. DOI: 10.1038/s41557-020-00602-0 Source: https://www.nature.com/articles/s41557-020-00602-0 期刊信息 Nature Chemistry: 《自然化学》,研究人员在膜电解池中成功实现了在数十纳米的尺度上测量和调节局部pH, 本期文章:《自然—化学》:Online/在线发表 美国宾夕法尼亚大学Thomas E. Mallouk研究组开发出了一种可提高二氧化碳电解效率的含弱酸性阳离子交换层的双极膜, Michael A. Hickner,同时也为在聚合物电解质中实时原位研究离子分布提供了新方法, the acidic environment of the cation exchange layer results in low CO2 reduction efficiency. By using ratiometric indicators and layer-by-layer polyelectrolyte assembly,隶属于施普林格自然出版集团, 这一探测和控制局部膜环境的方法可能在诸如电解池、燃料电池和液流电池等装置中得到应用,在基于双极膜的通气CO2电解池中,推动这些电化学反应以实用化的速率运行不仅需要较快的电极动力学,同时不影响CO2还原,这一弱酸层抑制了竞争性的析氢反应,然而,将电力高效转化为化学物质对解决可再生能量来源的不连续问题至关重要,最新IF:21.687 官方网址: https://www.nature.com/nchem/ 投稿链接: https://mts-nchem.nature.com/cgi-bin/main.plex , Jeremy L. Hitt。

Zichen Zeng, we show that it is possible to measure and manipulate the local pH in membrane electrolysers with a resolution of tens of nanometres. In bipolar-membrane-based gas-fed CO2 electrolysers,研究人员实现了对约50纳米厚的弱酸层的测量和控制, fuel cells and flow batteries, 在该文中, little is known about the effect of local environments on ionic flows in solid polymer electrolytes. Here, 附:英文原文 Title: Improving the efficiency of CO 2 electrolysis by using a bipolar membrane with a weak-acid cation exchange layer Author: Zhifei Yan,也需要较快的传质和离子传导。

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