Synthesis of Carbon-coated Nanoplate α-Na 2 MoO 4 and its Electrochemical Lithiation Process as Anode Material for Lithium-ion Batteries

A Bio-Inspired Nanotubular Na2MoO4/TiO2 Composite as a High-Performance Anodic Material for Lithium-Ion Batteries

“…The metal oxides are outstanding electrode material candidates for lithium storage on account of their excellent electronic conductivities, larger theoretical capacities, as well as favorable diffusion abilities of lithium ions [ 17 ]. Specifically, Mo-based compounds have been investigated in large quantities due to the large capacities owing to the conversion reaction from Mo 6+ to Mo 0 with the transfer of six electrons [ 18 , 19 , 20 , 21 , 22 , 23 ]. In addition, Mo 6+ is easily reduced, which causes the appearance of conversion type reactions at lower voltage vs. Li + /Li [ 20 , 22 ].…”

“…In addition, Mo 6+ is easily reduced, which causes the appearance of conversion type reactions at lower voltage vs. Li + /Li [ 20 , 22 ]. Mo-based oxides, dichalcogenide, and oxysalts have been investigated on their electrochemical properties as the anodic materials for LIBs, such as MoO 3 [ 24 , 25 ], MoO 2 [ 26 , 27 ], MoS 2 [ 28 , 29 ], MMoO 4 (M = Na, Fe, Ni, La, Zn, Ca) [ 21 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ], and MMo 2 O 7 (M = Na, Li, Ag) [ 18 , 19 , 20 ]. However, the electronic conductivities and long-term cycling performances of these materials remain to be improved.…”

“…Besides, combining Mo-based materials with other materials (e.g., carbon, metal oxides) also increases the ionic and electronic conductivities and buffers the huge volumetric strain of the Mo-based materials, leading to the significant enhancement of their electrochemical performances [ 39 , 40 ]. Among all sorts of the molybdate salts, sodium molybdate has many advantages of a high theoretical specific capacity (780.6 mAh g −1 ) [ 21 ], low cost, as well as environmental friendliness [ 41 , 42 , 43 ]. Some of the sodium molybdate based materials were produced and applied as the anodic materials for LIBs, such as the carbon-coated α-Na 2 MoO 4 nanoplate and Na 2 Mo 2 O 7 nanocrystalline samples prepared via the sol–gel method [ 20 , 21 ], the Y 2 (MoO 4 ) 3 nanowires synthesized by the electrospinning technique [ 23 ], and so on.…”

“…Among all sorts of the molybdate salts, sodium molybdate has many advantages of a high theoretical specific capacity (780.6 mAh g −1 ) [ 21 ], low cost, as well as environmental friendliness [ 41 , 42 , 43 ]. Some of the sodium molybdate based materials were produced and applied as the anodic materials for LIBs, such as the carbon-coated α-Na 2 MoO 4 nanoplate and Na 2 Mo 2 O 7 nanocrystalline samples prepared via the sol–gel method [ 20 , 21 ], the Y 2 (MoO 4 ) 3 nanowires synthesized by the electrospinning technique [ 23 ], and so on. However, there were few researches concerning the development of the Na 2 MoO 4 -based materials with specific nanostructures as the anodic materials for LIBs previously.…”

Engineering Na−Mo−O/Graphene Oxide Composites with Enhanced Electrochemical Performance for Lithium Ion Batteries

“…Besides, the ease of reduction of Mo 6+ causes conversion type reactions to happen at lower voltages vs. Li + /Li, thereby qualifying the Mo 6+ containing oxides as potentially suitable anode materials for LIBs. Sodium containing Mo oxides such as Na 0.23 MoO 3 , Na 2 MoO 4 , Na 2 Mo 2 O 7 , due to its interesting structure and thermodynamic stability, have been explored as possible anode materials for LIBs. However, the electronic conductivities of these materials are not satisfactory in most cases.…”