Glycerol, a main byproduct of biodiesel, was used as the fuel agent in a scalable flame-assisted spray pyrolysis approach to synthesize micron-size cathode materials. Single droplet combustion, particle morphology, and electrochemical performance were examined considering the effects of salt concentration, water addition, and post-annealing time on synthesizing Li(Ni_1/3Co_1/3Mn_1/3)O₂ (NCM111) cathode materials. Single droplet tests showed that a sufficient amount of water in the glycerol-based precursor could delay droplet inflation and ignition. Moreover, using a two-fluid atomization nozzle, spray tests demonstrated that adding water would result in less wrinkled and more uniform particles. Nevertheless, increasing water proportion in the precursor could reduce the reaction heat, resulting in that samples prepared with water addition needed longer post-annealing time to improve their electrochemical performance. Using the precursor without water, the best performed NCM111 cathode material was synthesized with only 2 h of post-annealing. It has a discharge capacity of 163.3 mAh/g at 0.1C and 85.5% capacity retention at 1C after 100 cycles. The current work confirmed the capability of using glycerol as a sustainable fuel agent to synthesize NCM111 cathode materials, and also provided basic conditions for the development of large-scale production in the future.

甘油，生物柴油的主要副产物，在可扩展的火焰辅助喷雾热解方法中用作燃料，以合成微米级的阴极材料。考虑了盐浓度，加水量和后退火时间对Li（Ni _1/3 Co _1/3 Mn _1/3）O ₂合成的影响，研究了单滴燃烧，颗粒形态和电化学性能。（NCM111）正极材料。单滴测试表明，甘油基前体中的水量足够，可能会延迟水滴膨胀和着火。此外，使用双流体雾化喷嘴，喷雾测试表明，加水将产生更少的起皱和更均匀的颗粒。然而，增加前驱体中的水比例可能会降低反应热，导致加水制备的样品需要更长的后退火时间才能改善其电化学性能。使用没有水的前驱物，仅需2 h的后退火即可合成性能最佳的NCM111阴极材料。在100个循环后，其在0.1C时的放电容量为163.3 mAh / g，在1C时的容量保持率为85.5％。