Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Vertically-Oriented Ti3C2Tx MXene Membranes for High Performance of Electrokinetic Energy Conversion
ACS Nano ( IF 15.8 ) Pub Date : 2020-11-24 , DOI: 10.1021/acsnano.0c02202 Renjie Qu 1 , Xianhai Zeng 1 , Lingxin Lin 1 , Gehui Zhang 2 , Feng Liu 2 , Chao Wang 1 , Shenglin Ma 3 , Chang Liu 1 , Huifang Miao 1 , Liuxuan Cao 1
ACS Nano ( IF 15.8 ) Pub Date : 2020-11-24 , DOI: 10.1021/acsnano.0c02202 Renjie Qu 1 , Xianhai Zeng 1 , Lingxin Lin 1 , Gehui Zhang 2 , Feng Liu 2 , Chao Wang 1 , Shenglin Ma 3 , Chang Liu 1 , Huifang Miao 1 , Liuxuan Cao 1
Affiliation
|
The electrokinetic effect to convert the mechanical energy from ambient has gained sustained research attention because it is free of moving parts and easy to be miniaturized for microscale applications. The practical application is constrained by the limited electrokinetic energy conversion performance. Herein, we report vertically oriented MXene membranes (VMMs) with ultrafast permeation as well as high ion selectivity, in which the permeation is several thousand higher than the largely researched horizontally stacked MXene membranes (HMMs). The VMMs can achieve a high streaming current of 8.17 A m–2 driven by the hydraulic pressure, largely outperforming all existing materials. The theoretical analysis and numerical calculation reveal the underlying mechanism of the ultrafast transport in VMMs originates from the evident short migration paths, the low energy loss during the ionic migration, and the large effective inlet area on the membrane surface. The orientation of the 2D lamella in membranes, the long-overlooked element in the existing literatures, is identified to be an essential determinant in the performance of 2D porous membranes. These understandings can largely promote the development of electrokinetic energy conversion devices and bring advanced design strategy for high-performance 2D materials.
中文翻译：
垂直取向的Ti 3 C 2 T x MXene膜，可实现高性能的动能转换
从周围环境转换机械能的电动势一直受到研究的关注，因为它没有运动部件，并且易于在微型应用中小型化。实际的应用受到有限的电动能量转换性能的限制。在此，我们报道了具有超快渗透性和高离子选择性的垂直取向MXene膜（VMM），其渗透率比大量研究的水平堆叠MXene膜（HMM）高数千倍。VMM可以实现8.17 A m –2的高流电流由液压驱动，大大优于所有现有材料。理论分析和数值计算表明，VMM中超快速传输的潜在机理源于明显的短迁移路径，离子迁移过程中的低能量损失以及膜表面上较大的有效入口面积。膜中2D薄片的取向是现有文献中一个长期被忽视的因素，被认为是2D多孔膜性能的重要决定因素。这些理解可以极大地促进电动能量转换设备的开发，并为高性能2D材料带来先进的设计策略。
更新日期：2020-12-22
中文翻译：
垂直取向的Ti 3 C 2 T x MXene膜，可实现高性能的动能转换
从周围环境转换机械能的电动势一直受到研究的关注，因为它没有运动部件，并且易于在微型应用中小型化。实际的应用受到有限的电动能量转换性能的限制。在此，我们报道了具有超快渗透性和高离子选择性的垂直取向MXene膜（VMM），其渗透率比大量研究的水平堆叠MXene膜（HMM）高数千倍。VMM可以实现8.17 A m –2的高流电流由液压驱动，大大优于所有现有材料。理论分析和数值计算表明，VMM中超快速传输的潜在机理源于明显的短迁移路径，离子迁移过程中的低能量损失以及膜表面上较大的有效入口面积。膜中2D薄片的取向是现有文献中一个长期被忽视的因素，被认为是2D多孔膜性能的重要决定因素。这些理解可以极大地促进电动能量转换设备的开发，并为高性能2D材料带来先进的设计策略。
京公网安备 11010802027423号