title: The effect of hydrazine intercalation on the structure and capacitance of 2D titanium carbide (MXene).
abstract: Herein we show that hydrazine intercalation into 2D titanium carbide (Ti3C2-based MXene) results in changes in its surface chemistry by decreasing the amounts of fluorine, OH surface groups and intercalated water. It also creates a pillaring effect between Ti3C2Tx layers pre-opening the structure and improving the accessability to active sites. The hydrazine treated material has demonstrated a greatly improved capacitance of 250 F g(-1) in acidic electrolytes with an excellent cycling ability for electrodes as thick as 75 μm.
authors.affiliation: Department of Materials Science and Engineering & A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA. gogotsi@drexel.edu.
authors.forename: O
authors.initials: O
authors.lastname: Mashtalir
authors.affiliation: Department of Materials Science and Engineering & A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA. gogotsi@drexel.edu.
authors.forename: M R
authors.initials: MR
authors.lastname: Lukatskaya
authors.affiliation: Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
authors.forename: A I
authors.initials: AI
authors.lastname: Kolesnikov
authors.affiliation: CNRS, CEMHTI UPR3079, Univ. Orléans, F-4071 Orléans, France.
authors.forename: E
authors.initials: E
authors.lastname: Raymundo-Piñero
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
authors.forename: M
authors.initials: M
authors.lastname: Naguib
authors.affiliation: Department of Materials Science and Engineering & A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA. gogotsi@drexel.edu.
authors.forename: M W
authors.initials: MW
authors.lastname: Barsoum
authors.affiliation: Department of Materials Science and Engineering & A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA. gogotsi@drexel.edu.
authors.forename: Y
authors.initials: Y
authors.lastname: Gogotsi