Recently, Tang Yongbing, a researcher of the Functional Thin Film Materials Research Center of the Shenzhen Institute of Advanced Technology, the Chinese Academy of Sciences, and his team members Lang Jihui, Jiang Chunlei, and Fang Yue developed a room temperature calcium-based multi-ion battery with high rates and long cycles. The three-ion design strategy has achieved a rate performance of up to 15C (capacity retention rate of 97%), and has a capacity retention rate of 86% after 1500 cycles at a rate of 5C. It is currently reported in calcium-based full batteries. Best performance. Related achievements were published in "Advanced Energy Materials" under the title of Room-Temperature Rechargeable Ca-Ion Based Hybrid Batteries with High Rate Capability and Long-Term Cycling Life. The rich resource reserves of calcium, the standard electrode potential close to lithium, and the bivalent state (the number of charges is twice that of lithium ions) characteristics make calcium ion energy storage devices have good application prospects in energy storage and other fields. However, the calcium metal anode forms a passivation film in the conventional organic electrolyte, and it is difficult to achieve a reversible deposition / stripping reaction at room temperature; in addition, the larger calcium ion radius leads to poor rate and cycle performance, which seriously hinders calcium ion energy storage Device development. Based on the above considerations, Tang Yongbing (corresponding author) and his team members Lang Jihui (first author), Jiang Chunlei (co-first author), and Fang Yue (co-first author) successfully developed a three-ion reaction strategy (Ca2 + / Li + / PF6-) new type calcium ion battery. By studying the binary phase diagram and combining with theoretical calculations, the battery uses Sn metal, which can be alloyed with Ca2 + and Li +, as the anode material, and expanded graphite, which can react with PF6-reversibly intercalated, as the cathode material. On the one hand, due to the good reversibility of PF6-intercalated graphite, the problems of low rate performance and poor cycling performance caused by the slow kinetic process of calcium ions in traditional cathode materials are avoided, which provides a high-performance calcium ion battery More positive electrode materials are selected; on the other hand, by hybridizing appropriate amount of lithium ions with small ion radius and fast diffusion rate, the kinetic performance of calcium ion alloying reaction can be effectively improved. The synergy of the above two reaction mechanisms significantly improves the electrochemical performance of calcium-based multi-ion batteries. The results of the study show that the optimized calcium battery has a capacity retention rate of 97% at a high rate of 15 C, and a capacity retention rate of 1500 cycles at 5 C rate of 86%, which is the most reported calcium-based battery. Good performance. This work provides a new solution for designing room temperature reversible calcium ion energy storage devices. The research was supported by the National Natural Science Foundation of Youqing project, Guangdong Science and Technology Plan and Shenzhen Science and Technology Plan. PLC synchronous jacking system Plc Synchronous Jacking System,Synchronous Jacking System,Synchronized Lifting Jacks,Synchronized Hydraulic Jacking Systems Taizhou Juhuan Lifting Protection Equipment Co., Ltd , https://www.jsjoba.com