Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 5, Pages 4296-4300Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b04198
Keywords
2D material; titanium carbide; MXene; hybrid Mg2+/Li+ battery; energy storage
Funding
- Toyota Research Institute of North America
- Korean National Research Foundation via the NNFC-KAIST-Drexel Nano2 Co-op Center [NRF-2015K1A4A3047100]
- Korea CCS R&D program - Ministry of Science, ICT, and Future Planning [NRF-2014M1A8A1049297]
- US National Science Foundation [DMR-1310245]
- Chinese Scholarship Council (CSC)
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As an alternative to pure lithium-ion, Lit, systems, a hybrid magnesium, Mg2+, and Li+ battery can potentially combine the high capacity, high voltage, and fast Li+ intercalation of Li-ion battery cathodes and the high capacity, low cost, and dendrite-free Mg metal anodes. Herein, we report on the use of two-dimensional titanium carbide, Ti3C2Tx (MXene), as a cathode in hybrid Mg2+/Li+ batteries, coupled with a Mg metal anode. Free-standing and flexible Ti3C2Tx/carbon nanotube composite paper delivered-,100 mAh at 0.1 C and similar to 50 mAh g(-1) at 10 C. At 1 C the capacity was maintained for >500 cycles at 80 mAh g(-1). The Mo2CTx MXene also demonstrated good performance as a cathode material in this hybrid battery. Considering the variety of available MXenes, this work opens the door for exploring a new large family of 2D materials with high electrical conductivity and large intercalation capacity as cathodes for hybrid Mg2+/Li+ batteries.
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