Researchers Develop a Stable Anode Material for Sodium-Ion Batteries

Researchers at the Beijing University of Technology claim that they had synthesized a series of phosphorus(P)-/tin (Sn)-based composites that serve as high-capacity and high-stability anode materials, enabling a sodium-ion battery with a capacity retention of 97.7% after 50 cycles.The researchers said sodium-ion batteries would be a vital alternative to lithium-ion batteries due to the high abundance and low cost of sodium resources. High-capacity anode materials like phosphorus are known for their high theoretical capacities, low discharge voltages, and low costs. But they often suffer from large volume expansion, leading to problems like structural collapse and particle pulverization, declining performance rapidly. Therefore, they alloyed phosphorous with tin and constructed well-designed microstructures to buffer these issues.The researchers used a low-cost one-step ball milling…

Read more…