催化裂化废弃催化剂在锂硫电池正极材料中的应用

Application of waste catalytic cracking catalysts in cathode materials of lithium sulfur batteries

锂硫电池具有2.6 (kW·h)/kg的超高理论比能量,被认为是储能系统最有潜力的的候选电池。然而,合成高性能锂硫电池原材料的成本较高,是锂硫电池商业化进程的重大阻碍。炼油厂的催化裂化裂化装置产生大量废弃催化剂,通常以危废品的形式处理。文中介绍了以催化裂化装置废弃催化剂为原料,采用简单的制备方法合成锂硫电池正极材料并组装电池的新技术。对材料进行了相关的物理表征和电化学测试,研究了不同废弃催化剂掺杂的载体对正极材料性能影响的机理,探讨了以此正极组装的锂硫电池的对各项电化学性能的影响。

Lithium-sulfur batteries have an ultra-high theoretical specific energy of 2.6(kW·h)/kg,which are considered to be the most potential candidate batteries for energy storage systems.However,the high cost of synthesizing high-performance lithium-sul-fur battery raw materials is a major obstacle to the commercialization of lithium-sulfur batteries.The catalytic cracking units of re-fineries produced large quantities of waste catalysts,which were usually disposed as hazardous waste.This paper introduced a new technology of synthesizing the cathode material of lithium-sulfur battery and assembling the battery using the waste catalyst of cata-lytic cracking unit as raw material,carried out the physical characterization and electrochemical testing of the materials,studiedthe mechanism of the influence of different waste catalyst doped carriers on the properties of the positive electrode materials,and dis-cussedthe influence of the lithium-sulfur battery assembled from the positive electrode on the electrochemical properties.