Abstract
The production of clean energy requires efficient energy storage systems, such as Lithium-ion batteries, to store wind and solar energy. To meet this demand, suitable electrode materials must be chosen. Conversion-type negative electrode materials are considered promising candidates due to their high reversible capacity. In this study, pure Ni2.5Co0.5(PO4)2 (NCP) orthophosphate was synthesized using a solid-state reaction at 900 °C in air and its electrochemical behavior was studied for the first time as a negative electrode material. Carboxymethyl cellulose (CMC) and polyvinylidene fluoride (PVDF) binders were used and the obtained performances were compared. The electrochemical properties were explored over a voltage range of 0.5 – 3.0 V and 0.01 – 3.0 V. The results showed that NCP exhibits the best electrochemical properties, delivering a high reversible discharge capacity of 200 mAh g−1 after 30 cycles at a C/5 current rate over 0.01 – 3.0 V voltage range, using a water-based CMC binder. Additionally, NCP@C delivers a reversible discharge capacity of 211 mAh g−1 after 400 cycles at a 2 C rate with a coulombic efficiency of 100 %
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
