US 12,308,420 B1
Aluminum-air composite battery and preparation method
Xuerong Zheng, Haikou (CN); Yida Deng, Haikou (CN); Wenjie Huang, Haikou (CN); Yang Wang, Haikou (CN); Beiyang Chen, Beijing (CN); Haozhi Wang, Haikou (CN); Caiyun Zhao, Haikou (CN); Feng Liu, Beijing (CN); and Rui Li, Beijing (CN)
Assigned to Hainan University, Haikou (CN); China Huadian Co. Ltd., Beijing (CN); Hainan Lvran clean energy Co. Ltd., Haikou (CN); and Huadian Water Technology Co. Ltd., Beijing (CN)
Filed by Hainan University, Haikou (CN); China Huadian Co. Ltd., Beijing (CN); Hainan Lvran clean energy Co. Ltd., Haikou (CN); and Huadian Water Technology Co. Ltd., Beijing (CN)
Filed on Nov. 22, 2024, as Appl. No. 18/957,235.
Claims priority of application No. 202410036653.9 (CN), filed on Jan. 10, 2024.
Int. Cl. H01M 4/38 (2006.01); H01M 4/36 (2006.01); H01M 4/50 (2010.01); H01M 4/90 (2006.01); H01M 12/02 (2006.01); H01M 12/06 (2006.01)
CPC H01M 4/364 (2013.01) [H01M 4/381 (2013.01); H01M 4/387 (2013.01); H01M 4/50 (2013.01); H01M 4/9016 (2013.01); H01M 12/02 (2013.01); H01M 12/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An aluminum-air composite battery, comprising an aluminum-ion battery anode, an aluminum-ion battery cathode, an aluminum-air battery cathode and an alkaline electrolyte, wherein MnO2, SiO2, TiO2, Mg, Ga, Sn, Bi, Zn and Al are mixed in proportion, melted in an inert gas environment, then refined and poured to prepare the aluminum-ion battery anode;
α-MnO2, nickel oxide and anhydrous ethanol are mixed and calcined, and then mixed with Ketjen black, activated carbon, polytetrafluoroethylene dispersion and anhydrous ethanol into pulp; and the pulp is coated on a nickel fiber felt, pressed by a die and dried to prepare the aluminum-ion battery cathode;
a potassium permanganate solution is mixed with a carbon carrier; the mixture is processed by hydrothermal synthesis, filtration, washing and drying to make powder; the powder is mixed with polyvinylidene fluoride and N-methylpyrrolidone and coated on a waterproof conductive cloth; and after drying and aging, the aluminum-air battery cathode is prepared;
the alkaline electrolyte is prepared from indium sulfate, potassium citrate, sodium stannate, zinc oxide, glucose, potassium fluoride, casein, polyoxypropylene glycerol ether and a sodium hydroxide solution.