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Electrochemical Cement Clinker Precursor Production at Low Voltages AITranslate

Benjamin A. W. Mowbray; Zishuai Bill Zhang; Colin T. E. Parkyn; Curtis P. Berlinguette;
The University of British Columbia; The University of British Columbia; The University of British Columbia; 661 University Avenue
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Publisher: ACS
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Abstract AITranslate

Cement production is carbon intensive today because fossil fuels are used to heat high-temperature kilns, and because CO2 is released as a byproduct of limestone (CaCO3) decomposition. Electrochemical reactors can decarbonize cement production by using electricity instead of heat to convert CaCO3 into Ca(OH)2, a cement clinker precusor, while releasing the CO2 byproduct as a pure stream. Herein, we report a “cement electrolyzer” that electrolytically converts limestone into Ca(OH)2 at a cell voltage of 1.8 V at 100 mA cm–2. This new benchmark improves upon the previous record of 4.2 V by oxidizing the H2 byproduct from the cathode compartment into protons for CaCO3 decomposition. A techno-economic model shows that this use of H2 decreases the cost of cement production by $36/tcement compared to the use of H2 as a kiln fuel. This work describes an energy-efficient cement electrolyzer and advances the feasibility of electrochemical cement production.

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DOI：https://doi.org/10.1021/acsenergylett.3c00242

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Citation Information:

Cement production is carbon intensive today because fossil fuels are used to heat high-temperature kilns, and because CO2 is released as a byproduct of limestone (CaCO3) decomposition. Electrochemical reactors can decarbonize cement production by using electricity instead of heat to convert CaCO3 into Ca(OH)2, a cement clinker precusor, while releasing the CO2 byproduct as a pure stream. Herein, we report a “cement electrolyzer” that electrolytically converts limestone into Ca(OH)2 at a cell voltage of 1.8 V at 100 mA cm–2. This new benchmark improves upon the previous record of 4.2 V by oxidizing the H2 byproduct from the cathode compartment into protons for CaCO3 decomposition. A techno-economic model shows that this use of H2 decreases the cost of cement production by $36/tcement compared to the use of H2 as a kiln fuel. This work describes an energy-efficient cement electrolyzer and advances the feasibility of electrochemical cement production.

quote

GB/T 7714-2015 [1] Benjamin A. W. Mowbray, Zishuai Bill Zhang, Colin T. E. Parkyn, et al. ACS Energy Letters, 2023(8). DOI:10.1021/acsenergylett.3c00242.
MLA [1] Benjamin A. W. Mowbray, et al., ACS Energy Letters, no. 8, 2023, https://doi.org/10.1021/acsenergylett.3c00242.
APA [1] Benjamin A. W. Mowbray, Zishuai Bill Zhang, Colin T. E. Parkyn, & Curtis P. Berlinguette. (2023). ACS Energy Letters(8). https://doi.org/10.1021/acsenergylett.3c00242
IEEE [1] Benjamin A. W. Mowbray, Zishuai Bill Zhang, Colin T. E. Parkyn, and Curtis P. Berlinguette, ACS Energy Letters, no. 8, 2023, doi: 10.1021/acsenergylett.3c00242.