MXenes公司
插层(化学)
材料科学
锂(药物)
电化学
电容
碳化钛
化学工程
储能
水溶液
碳化物
离子
钛
超级电容器
无机化学
盐(化学)
电化学储能
电极
纳米技术
化学
冶金
复合材料
物理化学
有机化学
功率(物理)
内分泌学
工程类
物理
医学
量子力学
作者
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall’Agnese,Patrick Rozier,Pierre Louis Taberna,Michael Naguib,Patrice Simon,Michel W. Barsoum,Yury Gogotsi
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2013-09-27
卷期号:341 (6153): 1502-1505
被引量:3339
标识
DOI:10.1126/science.1241488
摘要
The intercalation of ions into layered compounds has long been exploited in energy storage devices such as batteries and electrochemical capacitors. However, few host materials are known for ions much larger than lithium. We demonstrate the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers. MXenes combine 2D conductive carbide layers with a hydrophilic, primarily hydroxyl-terminated surface. A variety of cations, including Na(+), K(+), NH4(+), Mg(2+), and Al(3+), can also be intercalated electrochemically, offering capacitance in excess of 300 farads per cubic centimeter (much higher than that of porous carbons). This study provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.
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