Integrated carbon capture and CO production from bicarbonates through bipolar membrane electrolysis

Song, Hakhyeon; Fernández, Carlos A.; Choi, Hyeonuk; Huang, Po-Wei; Oh, Jihun; Hatzell, Marta C.

doi:10.1039/d4ee00048j

Energy Environ. Sci.

2024

DOI: 10.1039/d4ee00048j

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Integrated carbon capture and CO production from bicarbonates through bipolar membrane electrolysis

Hakhyeon Song,

Carlos A. Fernández,

Hyeonuk Choi

et al.

Abstract: Electrochemical CO2 reduction (CO2RR) offers an environmentally friendly method to transform and harness sequestered CO2. While gas-phase electrolysis systems provide high efficiency, gas-phase electrolysis systems face challenges related to carbonate...

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Cited by 8 publications

References 38 publications

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Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Shan,

Cao,

et al. 2024

AIChE Journal

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Producing battery‐grade Li2CO3 product from salt‐lake brine is a critical issue for meeting the growing demand of the lithium‐ion battery industry. Traditional procedures include Na2CO3 precipitation and multi‐stage crystallization for refining, resulting in significant lithium loss and undesired lithium product quality. Herein, we first proposed a bipolar membrane CO2 mineralization technique for directly producing battery‐grade Li2CO3 from lake brine that enriches alkali metals (Na+, K+). Results indicate the process can successfully separate Li+ from contaminants and present a selectivity above 900 for Li+ through the CO2 mineralization reaction, while prevent electro‐oxidating Cl− to Cl2 pollution. The obtained Li2CO3 production purity is above 99.75% with lithium recovery rate of 86%. Carbon dioxide was captured in the form of Li2CO3, with a capacity of 595 g of CO2 for1 kg of Li2CO3. The technology provides a sustainable and cost‐effective path for producing battery‐grade Li2CO3 from the lake brine.

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Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Shan,

Cao,

et al. 2024

AIChE Journal

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Engineering Catalytic Microenvironment Enabling Direct Carbonate Electrolysis to Ethylene

Sheng,

Ge,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

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The preparation of multicarbon products, such as ethylene (C 2 H 4 ), is primarily achieved through gas-phase CO 2 electrolysis. However, this method faces challenges, including low CO 2 utilization and inefficient catalysts. To address these issues, direct carbonate electrolysis can be employed effectively. In this study, we propose a microenvironment-modulated strategy to enhance the efficiency of direct carbonate electrolysis to C 2 H 4 using a Cu catalyst. By incorporating a hydrophobic component, polytetrafluoroethylene (PTFE), on the surface of the Cu catalyst, we achieved a significant improvement in C 2 H 4 selectivity, from 1.07% for the Cu catalyst to 13.48% for the Cu/50% PTFE catalyst at 100 mA cm −2 . Furthermore, by optimizing the CO coverage at the catalytic interface with tandem components, notably Ni−N−C, the Faradaic efficiency of C 2 H 4 was boosted to 21.72% at the same current density. Notably, the CO 2 gas was almost undetectable at the outlet during a long-term stability test, indicating nearly 100% CO 2 utilization. This research underscores the significance of adjusting the catalyst microenvironment at the electrode− electrolyte interface for direct (bi)carbonate electrolysis.

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Economic Viability of Integrated CO₂ Capture and Conversion

Kim,

Namdari,

Jewlal

et al. 2024

ACS Energy Lett.

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Integrated carbon capture and CO production from bicarbonates through bipolar membrane electrolysis

Abstract: Electrochemical CO2 reduction (CO2RR) offers an environmentally friendly method to transform and harness sequestered CO2. While gas-phase electrolysis systems provide high efficiency, gas-phase electrolysis systems face challenges related to carbonate...

Cited by 8 publications

References 38 publications

Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Engineering Catalytic Microenvironment Enabling Direct Carbonate Electrolysis to Ethylene

Economic Viability of Integrated CO₂ Capture and Conversion

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Product

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Integrated carbon capture and CO production from bicarbonates through bipolar membrane electrolysis

Abstract: Electrochemical CO2 reduction (CO2RR) offers an environmentally friendly method to transform and harness sequestered CO2. While gas-phase electrolysis systems provide high efficiency, gas-phase electrolysis systems face challenges related to carbonate...

Cited by 8 publications

References 38 publications

Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Producing battery grade lithium carbonate from salt‐lake brine via bipolar membrane carbon dioxide mineralization

Engineering Catalytic Microenvironment Enabling Direct Carbonate Electrolysis to Ethylene

Economic Viability of Integrated CO2 Capture and Conversion

Contact Info

Product

Resources

About

Economic Viability of Integrated CO₂ Capture and Conversion