Toward MBenes Battery Electrode Materials: Layered Molybdenum Borides for Li-Ion Batteries
- Tulane Univ., New Orleans, LA (United States)
- INM-Leibniz Institute for New Materials, Saarbrücken (Germany); Saarland University Campus, Saarbrücken (Germany)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
- INM-Leibniz Institute for New Materials, Saarbrücken (Germany); Saarland University Campus, Saarbrücken (Germany); Saarland Center for Energy Materials and Sustainability, Saarbrücken (Germany)
Lithium-ion and sodium-ion batteries (LIBs and SIBs) are crucial in our shift toward sustainable technologies. In this work, the potential of layered boride materials (MoAlB and Mo2AlB2) as novel, high-performance electrode materials for LIBs and SIBs, is explored. It is discovered that Mo2AlB2 shows a higher specific capacity than MoAlB when used as an electrode material for LIBs, with a specific capacity of 593 mAh g-1 achieved after 500 cycles at 200 mA g-1. It is also found that surface redox reactions are responsible for Li storage in Mo2AlB2, instead of intercalation or conversion. Moreover, the sodium hydroxide treatment of MoAlB leads to a porous morphology and higher specific capacities exceeding that of pristine MoAlB. When tested in SIBs, Mo2AlB2 exhibits a specific capacity of 150 mAh g-1 at 20 mA g-1. These findings suggest that layered borides have potential as electrode materials for both LIBs and SIBs, and highlight the importance of surface redox reactions in Li storage mechanisms.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1997865
- Journal Information:
- Small Methods, Journal Name: Small Methods Journal Issue: 8 Vol. 7; ISSN 2366-9608
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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