Bistacked Titanium Carbide (MXene) Anodes for Hybrid Sodium-Ion Capacitors
Alshareef, Husam N.
KAUST DepartmentFunctional Nanomaterials and Devices Research Group
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Online Publication Date2018-08-08
Print Publication Date2018-09-14
Permanent link to this recordhttp://hdl.handle.net/10754/631620
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AbstractTwo-dimensional transition-metal carbides (MXenes) have shown great promise as electrode materials for high-rate pseudocapacitive energy storage. In this study, we report on the fabrication of bistacked two-dimensional titanium carbide electrodes which are free of binder, conductive additives, and current-collector. This MXene electrode is capable of reversible electrochemical storage of sodium ions with good cycling stability and rate capability. A prototype hybrid Na-ion capacitor was assembled by combining the bistacked MXene anode with an activated carbon cathode, which showed an energy density of 39 Wh/kg (including the total weight of bistacked MXene and activated carbon, 6 mg/cm) at 1C rate and maintained up to 60% of its performance at a 60C rate, in the operating voltage window of 3.4 V. This study opens new avenues for developing self-standing binder and additive-free MXene electrodes for metal-ion batteries and capacitors.
CitationKurra N, Alhabeb M, Maleski K, Wang C-H, Alshareef HN, et al. (2018) Bistacked Titanium Carbide (MXene) Anodes for Hybrid Sodium-Ion Capacitors. ACS Energy Letters 3: 2094–2100. Available: http://dx.doi.org/10.1021/acsenergylett.8b01062.
SponsorsThis research was supported by King Abdullah University of Science and Technology under the KAUST-Drexel University Competitive Research Grant. We thank Dr. Christopher Shuck for helpful comments on the manuscript.
PublisherAmerican Chemical Society (ACS)
JournalACS Energy Letters