Scalable Manufacturing of Large and Flexible Sheets of MXene/Graphene Heterostructures

• DOI: 10.1002/admt.201800639
• Publication Date: 2019-03-06T10:09:24Z
• Authors: Meng‐Qiang Zhao; Nicholas Trainor; Chang E. Ren; Michelle Torelli; Babak Anasori; Yury Gogotsi
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Abstract Stacking different 2D materials is a promising strategy to fabricate heterostructures that combine the advantages and eliminate associated shortcomings of individual building blocks. When used for energy storage, provide opportunity manufacture flexible conductive paper electrodes, which require no binders, additives, or current collectors. Here, MXene/graphene heterostructured papers are manufactured by alternately stacking Ti 3 C 2 T x MXene reduced graphene oxide (rGO) nanosheets using spray‐assisted layer‐by‐layer assembly. Up letter paper–sized free‐standing films can be within half an hour spraying. directly as anodes Na‐ion MXene/rGO exhibit improved electrochemical performance compared pure rGO in terms capacity, rate performance, cycling stability. Capacities ≈600 mAh g −1 achieved MXene—20 wt% at 0.25 (≈220 2.5 C) along with excellent This work demonstrates possibility large‐scale manufacturing MXene‐based energy, separation, electromagnetic interference shielding, biomedical applications.