Abstract
The niobium molybdenum oxide Nb14Mo3O44 nanoparticles are synthesized by a convenient solvothermal method and explored as new anodes for lithium-ion batteries. Nb14Mo3O44, which belongs to tetragonal structure that consists of 4 × 4 × ∞ NbO6 octahedra-blocks linked by MoO4 tetrahedra, generates stable structure for the efficient Li+ de/intercalation. Compared with the agglomerated microparticles obtained by solid-state reaction, Nb14Mo3O44 nanoparticles demonstrate a higher initial coulombic efficiency (90.6%), better cycle property (218 mAh g−1 after 503 cycles at 0.5 C) and improved rate capability (74 mAh g−1 at 20 C), benefiting from nanoparticles possessed rather high specific surface area and reaction reactivity. This work provides a current supplement for intercalation-type Nb-M-O compounds anodes.
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