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In recent years, conversion based mixed transition metal oxides have emerged as potential anode for the next generation lithium ion batteries due to their high theoretical capacity and high rate performance. Herein, an interconnected cobalt molybdenum oxide (CoMoO4) nanoarchitecture derived from molybdenum sulfide (MoS2) nanoflowers is investigated as an anode for lithium ion batteries. The interconnected CoMoO4 displayed excellent discharge capacity of 1100 mAh g-1 over 100 cycles at current rate of C/5. Moreover, the material exhibited an enhanced electrochemical stability, high rate performance and delivered high discharge capacities of 600 mAh g-1 and 220 mAh g-1, respectively at 5 C, 10 C after 500 cycles. The excellent cycling stability and high rate performance of interconnected CoMoO4 is credited to its unique architecture and porous morphology. The above characteristics and the synergetic effect between the constituting metal ions not only provided shorter diffusion path for the lithium ion conduction but also improved the electronic conductivity and mechanical strength of the anode. The field emission scanning electron microscopy (FESEM) analysis of electrochemically cycled electrode revealed good structural integrity of the electrode. Further, the practical feasibility of interconnected CoMoO4 in full cell was analyzed by integrating it with LiNi0.8Mn0.1Co0.1O2 cathode which demonstrated excellent cycling stability and high rate performance.
This article was published in the following journal.
Name: ACS applied materials & interfaces
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