THERMOCHEMICAL TEMPERATURE REGULATION STUDY OF COBALT-COPPER-LITHIUM COMPOSITE METAL OXIDES

Yuan Peng; Peng Jikang; Xiao Gang

doi:10.19912/j.0254-0096.tynxb.2021-0884

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (1) : 114-118. DOI: 10.19912/j.0254-0096.tynxb.2021-0884

THERMOCHEMICAL TEMPERATURE REGULATION STUDY OF COBALT-COPPER-LITHIUM COMPOSITE METAL OXIDES

Yuan Peng^1,2, Peng Jikang^1,2, Xiao Gang^1,2

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Abstract

A composite metal oxide system has been proposed to regulate the thermochemical temperature by doping. The results showed the reduction temperature of cobalt-copper-lithium ternary composite oxide decreased from 850 ℃ to 795 ℃. The oxidation temperature was also reduced by 35-50 ℃. XRD and reaction kinetic analysis showed that the composite phase CoLiO₂ reduced the average activation energy of the reduction reaction from 911 kJ/mol to 602 kJ/mol, which was the main reason for the decrease of the reaction temperature. After 105 cycles, the redox reaction ratio of the cobalt-copper-lithium ternary composite oxide remained above 80%.

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thermochemistry / thermal energy storage / reaction kinetics / metal oxide / temperature regulation

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Yuan Peng, Peng Jikang, Xiao Gang. THERMOCHEMICAL TEMPERATURE REGULATION STUDY OF COBALT-COPPER-LITHIUM COMPOSITE METAL OXIDES[J]. Acta Energiae Solaris Sinica. 2023, 44(1): 114-118 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0884

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