Toward MBenes Battery Electrode Materials: Layered Molybdenum Borides for Li‐Ion Batteries
Toward MBenes Battery Electrode Materials: Layered Molybdenum Borides for Li‐Ion Batteries
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DOI：
10.1002/smtd.202300193
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发表时间：
2023-05
期刊：
影响因子：
12.4
通讯作者：
Ahmad Majed;Mohammad Torkamanzadeh;Chukwudi F. Nwaokorie;Karamullah Eisawi;Chaochao Dun;Audrey Buck;J. Urban;Matthew M. Montemore;V. Presser;Michael Naguib
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文献类型：
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作者：
Ahmad Majed;Mohammad Torkamanzadeh;Chukwudi F. Nwaokorie;Karamullah Eisawi;Chaochao Dun;Audrey Buck;J. Urban;Matthew M. Montemore;V. Presser;Michael Naguib
锂离子和钠离子电池（LIB和SIB）在我们向可持续技术转变中至关重要。在这项工作中，探索了层状硼化物材料（MoAlB和Mo 2AlB 2）作为LIB和SIB的新型高性能电极材料的潜力。发现当用作LIB的电极材料时，Mo 2AlB 2显示出比MoAlB更高的比容量，在200 mA g-1下500次循环后达到593 mAh g-1的比容量。结果表明，Li在Mo_2AlB_2中的存储不是由表面氧化还原反应引起的，而是由表面氧化还原反应引起的。此外，氢氧化钠处理的MoAlB导致多孔形态和更高的比容量超过原始的MoAlB。当在SIB中测试时，Mo 2AlB 2在20 mA g−1下的比容量为150 mAh g − 1。这些发现表明层状硼化物具有作为LIB和SIB的电极材料的潜力，并且突出了表面氧化还原反应在Li存储机制中的重要性。
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.