Pillared Structure Design of MXene with Ultralarge Interlayer Spacing for High-Performance Lithium-Ion Capacitors | Zendy

Jianmin Luo | Zendy; Wenkui Zhang | Zendy; Huadong Yuan | Zendy; Chengbin Jin | Zendy; Liyuan Zhang | Zendy; Hui Huang | Zendy; Chu Liang | Zendy; Yang Xia | Zendy; Jun Zhang | Zendy; Yongping Gan | Zendy; Xinyong Tao | Zendy

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Pillared Structure Design of MXene with Ultralarge Interlayer Spacing for High-Performance Lithium-Ion Capacitors

Author(s) -

Jianmin Luo,

Wenkui Zhang,

Huadong Yuan,

Chengbin Jin,

Liyuan Zhang,

Hui Huang,

Chu Liang,

Yang Xia,

Jun Zhang,

Yongping Gan,

Xinyong Tao

Publication year - 2016

Publication title -

acs nano

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.554

H-Index - 382

eISSN - 1936-086X

pISSN - 1936-0851

DOI - 10.1021/acsnano.6b07668

Subject(s) - materials science , mxenes , electrochemistry , anode , cathode , chemical engineering , lithium (medication) , power density , bromide , capacitor , supercapacitor , energy storage , cationic polymerization , nanotechnology , inorganic chemistry , power (physics) , voltage , electrode , chemistry , electrical engineering , medicine , physics , quantum mechanics , endocrinology , polymer chemistry , engineering

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 Ti 3 C 2 MXene (CTAB-Sn(IV)@Ti 3 C 2 ) via a facile liquid-phase cetyltrimethylammonium bromide (CTAB) prepillaring and Sn 4+ pillaring method. The interlayer spacing of Ti 3 C 2 MXene 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 -1 based on the weight of CTAB-Sn(IV)@Ti 3 C 2 even under higher power density of 10.8 kW kg -1 . When CTAB-Sn(IV)@Ti 3 C 2 anode couples with commercial AC cathode, LIC reveals higher energy density and power density compared with conventional MXene materials.

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