Department of Mechanical and Materials Engineering; Auburn University; Auburn AL 36849 USA
Department of Bioengineering; Northeastern University; Boston MA 02115 USA
School of Physics and CRANN; Trinity College; Dublin 2 Ireland
Department of Physics; Northeastern University; Boston MA 02115 USA
在编号1806931中，Majid Beidaghi及其同事制备了2D碳化钒MXene（V 2 CT x）的柔性且独立的膜，并将其用作伪电容电极。与分层的2D V 2 CT x片材相比，组装后的薄膜具有出色的化学和电化学稳定性，后者在环境条件下会迅速氧化。电极在具有水性电解质的超级电容器中显示出卓越的高速率伪电容特性，并且可以嵌入各种阳离子，在一百万次充放电循环后，提供的电容超过1300 F cm -3，而电容保持率约为77％。
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2D MXenes: Assembling 2D MXenes into Highly Stable Pseudocapacitive Electrodes with High Power and Energy Densities (Adv. Mater. 8/2019)
In article number 1806931, flexible and freestanding films of 2D vanadium carbide MXene (V2CTx) are prepared by Majid Beidaghi and co‐workers and used as pseudocapacitive electrodes. The assembled films show excellent chemical and electrochemical stability in contrast to delaminated 2D V2CTx sheets, which rapidly oxidize in ambient conditions. The electrodes show exceptional high‐rate pseudocapacitive properties in supercapacitors with aqueous electrolytes and can intercalate a variety of cations, delivering capacitances in excess of 1300 F cm−3 and a capacitance retention of ≈77% after one million charge–discharge cycles.
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