title: Pillared Structure Design of MXene with Ultralarge Interlayer Spacing for High-Performance Lithium-Ion Capacitors.
abstract: Two-dimensional transition-metal carbide materials (termed MXene) have attracted huge attention in the field of electrochemical energy storage due to their excellent electrical conductivity, high volumetric capacity, etc. Herein, with inspiration from the interesting structure of pillared interlayered clays, we attempt to fabricate pillared Ti3C2MXene (CTAB-Sn(IV)@Ti3C2) via a facile liquid-phase cetyltrimethylammonium bromide (CTAB) prepillaring and Sn4+pillaring method. The interlayer spacing of Ti3C2MXene can be controlled according to the size of the intercalated prepillaring agent (cationic surfactant) and can reach 2.708 nm with 177% increase compared with the original spacing of 0.977 nm, which is currently the maximum value according to our knowledge. Because of the pillar effect, the assembled LIC exhibits a superior energy density of 239.50 Wh kg-1based on the weight of CTAB-Sn(IV)@Ti3C2even under higher power density of 10.8 kW kg-1. When CTAB-Sn(IV)@Ti3C2anode couples with commercial AC cathode, LIC reveals higher energy density and power density compared with conventional MXene materials.
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Jianmin
authors.initials: J
authors.lastname: Luo
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Wenkui
authors.initials: W
authors.lastname: Zhang
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Huadong
authors.initials: H
authors.lastname: Yuan
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Chengbin
authors.initials: C
authors.lastname: Jin
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Liyuan
authors.initials: L
authors.lastname: Zhang
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Chu
authors.initials: C
authors.lastname: Liang
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xia
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Yongping
authors.initials: Y
authors.lastname: Gan
authors.affiliation: College of Materials Science and Engineering, Zhejiang University of Technology , Hangzhou 310014, People's Republic of China.
authors.forename: Xinyong
authors.identifier: 0000-0002-6233-4140
authors.initials: X
authors.lastname: Tao
keywords: MXene; Ti3C2; lithium-ion capacitors; nanocomposites; pillared structure