Enhanced electrochemical performance of Bi2O3 via facile synthesis as anode material for ultra-long cycle lifespan lithium-ion batteries
Nischal Oli, Wilber Ortiz Lago, Balram Tripathi, Mohan K. Bhattarai, Brad R. Weiner, Gerardo Morell, Ram S. Katiyar
Abstract
The urgent demand for stable electrode materials, especially for the anode, arises in the pursuit of high-energy Li-ion batteries. This research focuses on bismuth oxide (Bi2O3) and uncovers its performance through a straightforward, commercially viable synthesis route, along with the optimization of binders and electrolytes. By employing a sodium carboxymethyl cellulose binder and fluoroethylene carbonate additives, the Bi2O3 anode demonstrates significantly enhanced performance compared to prior studies. It attains an impressive initial capacity of approximately 750 mA h g-1, exhibits excellent rate capability at 1000 mA g-1 and maintains stable cycling performance over 6000 cycles.