Journal
ACS NANO
Volume 14, Issue 7, Pages 8678-8688Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c03042
Keywords
alkali-metal anode; 3D framework; MXene; high areal capacity; dendrite-free
Categories
Funding
- National Key R&D Program of China [2016YFA0200200]
- National Natural Science Foundation of China [51872283, 21805273, 51925207, 51872277, U1910210]
- LiaoNing Revitalization Talents Program [XLYC1807153]
- Liaoning BaiQianWan Talents Program
- Natural Science Foundation of Liaoning Province
- Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science [20180510038]
- DICP [DICP ZZBS201708, DICP ZZBS201802]
- DICP QIBEBT [DICPQIBEBT UN201702]
- Dalian National Laboratory for Clean Energy (DNL), CAS
- DNL Cooperation Fund, CAS [DNL180310, DNL180308, DNL201912, DNL201915]
- Fundamental Research Funds for the Central Universities [WK2060140026]
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Alkali metals are ideal anodes for high-energy-density rechargeable batteries, while seriously hampered by limited cycle life and low areal capacities. To this end, rationally designed frameworks for dendrite-free and volume-changeless alkali-metal deposition at both high current densities and capacities are urgently required. Herein, a general 3D conductive Ti3C2Tx MXene-melamine foam (MXene-MF) is demonstrated as an elastic scaffold for dendrite-free, high-areal-capacity alkali anodes (Li, Na, K). Owing to the lithiophilic nature of F-terminated MXene, conductive macroporous network, and excellent mechanical toughness, the constructed MXene-MF synchronously achieves a high current density of 50 mA cm(-2) for Li plating, high areal capacity (50 mAh cm(-2)) with high Coulombic ef f iciency (99%), and long lifetime (3800 h), surpassing the Li anodes reported recently. Meanwhile, MXene-MF shows flat voltage profiles for 720 h at 10 mA cm(-2) for the Na anode and 800 h at 5 mA cm(-2) for the K anode, indicative of the wide applicability. Notably, the high current density of 20 mA cm(-2) for 20 mAh cm(-2) for the Na anode, accompanying good recyclability was rarely achieved before. When coupled with sulfur or Na3V2(PO4)(3) cathodes, the assembled MXene-MF alkali (Li, Na)-based full batteries showcase enhanced rate capability and cycling stability, demonstrating the potential of MXene-MF for advanced alkali-metal batteries.
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