Boosting a practical Li-CO2 battery through dimerization reaction based on solid redox mediator

Li, Wei; Zhang, Menghang; Sun, Xinyi; Sheng, Chuanchao; Mu, Xiaowei; Wang, Lei; He, Ping; Zhou, Haoshen

doi:10.1038/s41467-024-45087-4

Cited by 19 publications

(1 citation statement)

References 61 publications

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“…Moreover, CO 2 is employed as the cathode active material of Li-CO 2 batteries, enabling the sequestration of CO 2 and energy release through electrochemical reactions. Accordingly, Li-CO 2 batteries not only facilitate the advancement of high-energy electrochemical energy storage devices but also significantly contribute to address the challenges posed by the energy crisis and climate change. − Nevertheless, Li-CO 2 batteries suffer from two main defects including poor stability and low round-trip efficiency during the discharge/charge processes, which are mainly attributed to the parasitic chemical reactions occurring at the anode, electrolyte, and cathode interfaces. O 2 •– has been found to be the major chemical mediators involved in or promoting the above-mentioned parasitic chemical reactions. , These side reactions lead to larger voltage polarization during discharge/charge processes and affect the cycling stability of batteries …”

Section: Introductionmentioning

confidence: 99%

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Wang,

Guo,

Ning

et al. 2024

Energy Fuels

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The lithium carbon dioxide (Li-CO 2 ) battery is regarded as an attractive electrochemical energy storage system on account of its high energy density (∼1876 Wh kg −1 ) and utilization of "greenhouse gas" CO 2 . The main discharge product lithium carbonate (Li 2 CO 3 ) is decomposed along with the inevitable formation of superoxide radicals (O 2•− ), and it results in irreversible side reactions, such as the deterioration of electrolytes and oxidation of the carbon cathode, which lead to unfavorable cycle life. Herein, sodium lignosulfonate (LSS) is introduced as a radical capture agent to reduce the reactivity of generated O 2•− in the Li-CO 2 battery. Combined with the results of adsorption energy calculation, it is found that O 2•− can be preferentially adsorbed with LSS. It favors suppression of the side reactions between O 2•− and the carbon cathode/electrolyte during charge. The discharge/charge voltage gap of the Li-CO 2 battery is significantly reduced by 0.23 V with a long lifespan of over 200 cycles. This investigation demonstrates that the reactivity manipulation of the O 2•− is essential to construct a stable and efficient Li-CO 2 battery.

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Section: Introductionmentioning

confidence: 99%

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Wang,

Guo,

Ning

et al. 2024

Energy Fuels

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Activated Co in Thiospinel Boosting Li₂CO₃ Decomposition in Li−CO₂ Batteries

Chen,

Li,

et al. 2024

Advanced Materials

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Catalytic reactions mainly depend on the adsorption properties of reactants on the catalyst, which provides a perspective for the design of reversible lithium−carbon dioxide (Li−CO2) batteries including CO2 reduction (CO2RR) and CO2 evolution (CO2ER) reactions. However, due to the complex reaction process, the relationship between the adsorption configuration and CO2RR/CO2ER catalytic activity is still unclear in Li─CO2 batteries. Herein, taking Co3S4 as a model system, nickel (Ni substitution in the tetrahedral site to activate cobalt (Co) atom for forming multiatom catalytic domains in NiCo2S4 is utilized. Benefiting from the special geometric and electronic structures, NiCo2S4 exhibits an optimized adsorption configuration of lithium carbonate (Li2CO3), promoting its effective activation and decomposition. As a result, the Li−CO2 batteries with NiCo2S4 cathode exhibit remarkable electrochemical performance in terms of low potential gap of 0.42 V and high energy efficiency of 88.7%. This work provides a unique perspective for the development of highly efficient catalysts in Li−CO2 batteries.

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Approaching Splendid Catalysts for Li–CO₂ Battery from the Theory to Practical Designing: A Review

Pan,

Ma,

Wang

et al. 2024

Advanced Materials

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Lithium carbon dioxide (Li–CO2) batteries, noted for their high discharge voltage of approximately 2.8 V and substantial theoretical specific energy of 1876 Wh kg−1, represent a promising avenue for new energy sources and CO2 emission reduction. However, the practical application of these batteries faces significant hurdles, particularly at high current densities and over extended cycle lives, due to their complex reaction mechanisms and slow kinetics. This paper delves into the recent advancements in cathode catalysts for Li–CO2 batteries, with a specific focus on the designing philosophy from composition, geometry, and homogeneity of the catalysts to the proper test conditions and real‐world application. It surveys the possible catalytic mechanisms, giving readers a brief introduction of how the energy is stored and released as well as the critical exploration of the relationship between material properties and performances. Specifically, optimization and standardization of test conditions for Li–CO2 battery research is highlighted to enhance data comparability, which is also critical to facilitate the practical application of Li–CO2 batteries. This review aims to bring up inspiration from previous work to advance the design of more effective and sustainable cathode catalysts, tailored to meet the practical demands of Li–CO2 batteries.

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Boosting a practical Li-CO2 battery through dimerization reaction based on solid redox mediator

Cited by 19 publications

References 61 publications

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Activated Co in Thiospinel Boosting Li₂CO₃ Decomposition in Li−CO₂ Batteries

Approaching Splendid Catalysts for Li–CO₂ Battery from the Theory to Practical Designing: A Review

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Boosting a practical Li-CO2 battery through dimerization reaction based on solid redox mediator

Cited by 19 publications

References 61 publications

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO2 Battery: Experimental and Density Functional Theory Studies

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO2 Battery: Experimental and Density Functional Theory Studies

Activated Co in Thiospinel Boosting Li2CO3 Decomposition in Li−CO2 Batteries

Approaching Splendid Catalysts for Li–CO2 Battery from the Theory to Practical Designing: A Review

Contact Info

Product

Resources

About

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Superoxide Radical Capture Agent for a Stable and Efficient Li-CO₂ Battery: Experimental and Density Functional Theory Studies

Activated Co in Thiospinel Boosting Li₂CO₃ Decomposition in Li−CO₂ Batteries

Approaching Splendid Catalysts for Li–CO₂ Battery from the Theory to Practical Designing: A Review