Rational Design of Titanium Carbide MXene Electrode Architectures for Hybrid Capacitive Deionization

作     者：Samantha Buczek Michael L.Barsoum Simge Uzun Narendra Kurra Ryan Andris Ekaterina Pomerantseva Khaled A.Mahmoud Yury Gogotsi Samantha Buczek;Michael L.Barsoum;Simge Uzun;Narendra Kurra;Ryan Andris;Ekaterina Pomerantseva;Khaled A.Mahmoud;Yury Gogotsi

作者机构：Department of Materials Science and Engineering and A.J.Drexel Nanomaterials InstituteDrexel UniversityPhiladelphia PA 19104USA Qatar Environment and Energy Research Institute(QEERI)Hamad Bin Khalifa University(HBKU)P.O.Box 34110Doha Qatar 

出 版 物：《Energy & Environmental Materials》 (能源与环境材料（英文）)

年 卷 期：2020年第3卷第3期

页      面：398-404页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0706[理学-大气科学] 0702[理学-物理学] 

基　　金：financial support from Qatar National Research Fund(a member of Qatar Foundation)through the NPRP Grant#9-254-2-120 Support from the National Science Foundation(CMMI-1635233) 

主　　题：MXene bi-stacked design water desalination purification CDI 

摘      要：Intercalation redox materials have shown great promise for efficient water desalination due to available faradaic gallery *** capacitive deionization(CDI)cells previously demonstrated using MXenes were often limited in their salt adsorption capacity(SAC)and voltage window of *** this study,current collector-and binder-free Ti3C2Tx MXene electrode architectures are designed with porous carbon as the positive electrode to demonstrate hybrid CDI(HCDI)***,MXene current collectors are fabricated by employing a scalable doctor blade coating technique and subsequently spray coating a layer of a small flake MXene *** redox-active galleries of MXenes are capable of intercalating a variety of aqueous cations including Na+,K+,and Mg2+ions,showing volumetric capacitances up to 250 F *** a result,a salt removal capacity of 39 mg g-1 with decent cycling stability is *** study opens new avenues for developing freestanding,binder-and additivefree MXene electrodes for HCDI applications.