A nanostructured SnO<sub>2</sub>/Ni/CNT composite as an anode for Li ion batteries
Anuradha A. Ambalkar, Ujjwala V. Kawade, Yogesh A. Sethi, Sandip C. Kanade, Milind V. Kulkarni, Parag V. Adhyapak, Bharat B. Kale
Abstract
along with the CNTs, avoiding pulverization as a result of the volumetric change of the nanoparticles being minimized. The material accommodates huge volume expansion and avoids the agglomeration of nanoparticles during the lithiation and delithiation processes. The Ni nanoparticles can successfully inhibit Sn coarsening during cycling, resulting in the enhancement of stability during reversible conversion reactions. They ultimately enhance the capacity, giving stability to the nanocomposite and improving performance. Additionally, the material exhibits a lower Warburg coefficient and higher Li ion diffusion coefficient, which in turn accelerate the interfacial charge transfer process; this is also responsible for the enhanced stable electrochemical performance. A detailed mechanism is expressed and elaborated on to provide a better understanding of the enhanced electrochemical performance.