Designed synthesis of CuCo2O4 /CuO nano-composite as a potential anode material for lithium ion batteries

Publication date: Available online 27 September 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Anubha Tomar, Jay Singh, Satendra Pal Singh, Alok Kumar RaiAbstractA unique strategy has been designed to synthesize CuCo2O4/CuO nano-composite by using facile pyro-synthesis method. A pyro-synthesis is a well‒known method to carbon coat the nanomaterials without using any carbon source. The network of carbon formed during pyro-synthesis was eventually evaporated by calcination in air, which simultaneously led to the partial reduction of CuCo2O4 to CuO due to the consumption of carbon under reduced atmosphere. Formation of CuCo2O4/CuO nano-composite was confirmed through powder X-ray diffraction analysis. Phase fractions of CuCo2O4 and CuO in the nano-composite obtained after the Rietveld refinement was ∼71.1 and 28.9 wt%, respectively. Employing this nano-composite as an anode exhibit excellent cycling stability (675.8 mAh g−1 at 0.1 C and 300.3 mAh g−1 at 1.0 C after 60 and 100 cycles, respectively) and better rate capability (122.4 mAh g−1 at 3.0 C), which can be ascribed to the unique architecture of the electrode with high structural integrity and excellent synergy between CuO and CuCo2O4 nanoparticles.
Source: Physica E: Low dimensional Systems and Nanostructures - Category: Nanotechnology Source Type: research
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