High capacity Li3VO4-Ga2O3/NC as durable anode for Li-ion batteries via robust pseudocapacitive charge storage

Nitrogen doped carbon bridged Li 3 VO 4 -Ga 2 O 3 hybrid (Li 3 VO 4 -Ga 2 O 3 /NC) is first synthesized through an intermediate solution method with subsequent annealing. The Li 3 VO 4 -Ga 2 O 3 /NC hybrid exhibits robust pseudocapacitive charge storage owing to the synergetic effect between each component, resulting in ultra-high capacity and ultra-stable cyclability as anode for Li-ion batteries. At a specific current of 0.1 A g −1 , the Li 3 VO 4 -Ga 2 O 3 /NC electrode delivers high reversible capacity of 652.6 mA h g −1 after 400 cycles, without obvious capacity attenuation over cycling. After three periodic rate performance testing from 0.1 to 2.0 A g −1 over 260 cycles, the Li 3 VO 4 -Ga 2 O 3 /NC electrode delivers high discharge capacity of 750.3 mA h g −1 when reverting current to 0.1 A g −1 . The Li 3 VO 4 -Ga 2 O 3 /NC electrode also shows excellent long cycle stability at 1.0 A g −1 , delivering high discharge capacity of 450.4 mA h g −1 after 1600 cycles.