Metal Cation Pre-Intercalated Ti 3 C 2 T x MXene as Ultra-High Areal Capacitance Electrodes for Aqueous Supercapacitors
[1];
[3];
[4];
[5];
[5];
[6];
[6];
[3];
[2];
[1]
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, United States
- Department of Chemistry, University of California, Riverside, California 92521, United States
- Department of Mechanical Engineering, The Pennsylvania State University, State College, Pennsylvania 16801, United States
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, Berlin 12489, Germany, Department of Physics, Freie Universität Berlin, Arnimallee 14, Berlin 14195, Germany
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkely, California 94720, United States
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Str. 15, Berlin 12489, Germany
Two-dimensional transition-metal carbides and nitrides “MXenes” have demonstrated great potential as electrode materials for electrochemical energy storage systems. This is especially true for delaminated Ti3C2Tx, which already shows outstanding gravimetric and volumetric capacitance, with areal capacitance limited by thickness (only a few microns). However, the performance of multilayer Ti3C2Tx has been more modest. Here, we report on using metal cation (viz., Na+, K+, and Mg2+) pre-intercalated multilayer Ti3C2Tx as electrodes for aqueous supercapacitors. These electrodes are scalable and amenable to rollto- roll manufacturing, with adjustable areal loadings of 5.2 to 20.1 mg/cm2. K–Ti3C2Tx exhibited the highest capacitances at different scan rates. A gravimetric capacitance comparable to that of delaminated MXene of up to 300 F/g was achieved for multilayer K–Ti3C2Tx but with an outstanding ultra-high areal capacitance of up to 5.7 F/cm2, which is 10-fold higher than the 0.5 F/cm2 of delaminated MXene and exceeds the 4.0 F/cm2 of microengineered MXene electrodes.
- Research Organization:
- Tulane Univ., New Orleans, LA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1876921
- Alternate ID(s):
- OSTI ID: 1882836; OSTI ID: 1958137
- Journal Information:
- ACS Applied Energy Materials, Journal Name: ACS Applied Energy Materials Vol. 5 Journal Issue: 8; ISSN 2574-0962
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis and characterization of 2D molybdenum carbide (MXene)
Synthesis of new two-dimensional titanium carbonitride Ti2C0.5N0.5Tx MXene and its performance as an electrode material for sodium-ion battery