Reversible Discharge Products in Li–Air Batteries

Liu, Tong; Zhao, Siyuan; Xiong, Qi; Yu, Jie; Wang, Jian; Huang, Gang; Ni, Meng; Zhang, Xinbo

doi:10.1002/adma.202208925

Cited by 36 publications

(13 citation statements)

References 208 publications

(305 reference statements)

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“…On the carbon paper, Li 2 O 2 is moss‐like nanoparticles, indicating that the formation of Li 2 O 2 occurs through a surface growth mechanism. [ 53 ] It is decomposed after charging, revealing the oxidation of Li 2 O 2 by D‐TEMPO (Figure 3f).…”

Section: Resultsmentioning

confidence: 99%

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity

Zhou,

Zhang,

Bian

et al. 2023

Advanced Energy Materials

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Aprotic lithium‐oxygen (Li–O2) batteries hardly cycle at the condition of high area capacity for realizing their high energy density, because the unconducive lithium peroxide (Li2O2) discharge product limits the electron transfer between electrode and O2/Li2O2. Here, it is demonstrated that one of redox mediator (RM), triethylene glycol bis‐2,2,6,6‐tetramethylpiperidin‐1‐oxyl radical (D‐TEMPO), can be effectively used to promote the electron transfer between electrode and Li2O2, which the shuttle effect of RM can be cooperatively inhibited by regulating the size of RM and the thickness of ion‐selective membrane. As a result, the Li–O2 battery coupled with double cathodes, D‐TEMPO, and ion‐selective membrane can be stably operated for 46 days at a capacity of 5 mAh cm−2. The concept in this work provides the cooperative design of a stable solution‐mediated pathway for high‐capacity Li–O2 battery with long cycle stability.

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Section: Resultsmentioning

confidence: 99%

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity

Zhou,

Zhang,

Bian

et al. 2023

Advanced Energy Materials

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“…Moreover, Li 2 O 2 sometimes leads to electrolyte decomposition due to the increased potential. To date, intensive effort including the modification of the catalyst cathode, electrolyte, and metal anode, has been devoted to solving the above issues; however, the critical technical and scientific challenges still cannot be properly addressed . Owing to the low cost, abundance, and environmental friendliness of Zn metal, the Zn–air battery has strong potential as an energy storage candidate, although its specific energy is 1084 Wh/kg, lower than that of Li–air batteries …”

Section: Development Of the Metal-catalysis Batterymentioning

confidence: 99%

Development, Essence, and Application of a Metal-Catalysis Battery

et al. 2023

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Metrics & MoreArticle Recommendations CONSPECTUS: In the pursuit of maximizing the energy supply and sustainable energy development, high-energy-density energy storage systems beyond lithium-ion batteries are surging. The metal-catalysis battery, composed of a metal anode, electrolyte, and redox-coupled electrocatalyst cathode with gas, liquid, or solid as active reactants, is regarded as a promising energy storage and conversion system due to its dual functions of energy storage and chemical production. In this system, with the assistance of a redox-coupled catalyst, during discharging, the reduction potential energy of the metal anode is converted into chemicals along with electrical energy generation, while the external electrical energy is translated to the reduction potential energy of the metal anode and the oxidation potential energy of the reactants during charging. In this loop, the electrical energy and sometimes chemicals can be generated simultaneously. Although intensive effort has been devoted to the exploration of redox-coupled catalysts, the essence of the metalcatalysis battery, which is the prerequisite for further development and application, has been overlooked.In this Account, we present the journey of the metal-catalysis battery from development to essence and application and propose that the metal-catalysis battery system, which combines energy storage and electrocatalytic redox reactions with the characteristics of temporal decoupling and spatial coupling and an energy-conversion paradigm from electrical energy to chemicals via electrochemical energy storage, is achieved. First, inspired by the Zn−air/Li−air battery, we developed and realized Li−CO 2 /Zn−CO 2 batteries and enriched the functions of the metal-catalysis battery from energy storage to chemical production. Based on OER/ORR and OER/CDRR catalysts, we have further explored OER/NO 3 − RR and HzOR/HER coupled catalysts and developed Zn−nitrate and Zn−hydrazine batteries. By extending the redox-coupled electrocatalyst systems from O, C species to N species and others, the metal-catalysis battery systems would develop from metal−O x , C x to metal−N x and other batteries. Then, from Zn−CO 2 and Zn−hydrazine batteries, we found that the overall reaction is decoupled into two separate reduction and oxidation reactions via the cathodic discharge and charge processes, and we further extracted the essence of the metal-catalysis battery, namely, the temporal-decouple and spatialcouple (TD-SC) mechanism, which is completely opposite to the conventional temporal couple and spatial decouple in electrochemical water splitting. Based on the TD-SC mechanism, we developed various applications of metal-catalysis batteries for the green and efficient synthesis of fine chemicals by modifying the metal anode and redox-coupled catalysts and electrolytes, including the Li−N 2 /H 2 battery for NH 3 synthesis and the organic Li−N 2 battery for fine chemical synthesis. Finally, the main challenges and the possible opportunities for the metal-catalysis ba...

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“…[20][21][22] However, unlike traditional alkaline ZABs, insoluble discharge products such as ZnO 2 in non-alkaline ZABs precipitate on the surface of the air cathode, similar to lithiumair batteries. [23,24] Therefore, more space in the cathode is needed to accommodate ZnO 2 generated during the discharge process. Mesoporous cathodes with a high pore volume have been found to promote O 2 diffusion and improve specific capacity in lithium-air batteries.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic and Homogeneous Conductive Carbon Matrix for High‐Rate Non‐Alkaline Zinc‐Air Batteries

Wang,

Qiu,

Zhang

et al. 2023

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Non‐alkaline zinc‐air batteries (ZABs) that use reversible O2/ZnO2 chemistry exhibit excellent stability and superior reversibility compared to conventional alkaline ZABs. Unlike alkaline ZABs, ZnO2 discharge products are generated on the surface of the air cathodes in non‐alkaline ZABs, requiring more gas–liquid–solid three‐phase reaction interfaces. However, the kinetics of reported ZABs based on carbon black (CB) is far from satisfactory due to the insufficient reaction areas. The rational structural design of the air cathode is an effective way to increase active surfaces to further enhance the performance of non‐alkaline ZABs. In this study, multi‐walled carbon nanotubes (MW‐CNTs) with unique mesoporous structures and high pore volumes are selected to replace CB in the air cathode preparation. Due to the larger electrochemically active surface area, superior hydrophobicity, and uniform electroconductibility of MW‐CNTs‐based cathodes, primary ZABs exhibit high specific capacity (704 mAh gZn−1) with a Zn utilization ratio of 85.85% at 1.0 mA cm−2, excellent discharge rate performance, and negligible self‐discharge. Furthermore, rechargeable ZABs also demonstrate outstanding rate capability and excellent cycling stability at various current densities. This work provides a fundamental understanding of the criteria for the cathode design of non‐alkaline ZABs, thus opening a new pathway for more sustainable ZABs.

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Reversible Discharge Products in Li–Air Batteries

Cited by 36 publications

References 208 publications

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity

Development, Essence, and Application of a Metal-Catalysis Battery

Hydrophobic and Homogeneous Conductive Carbon Matrix for High‐Rate Non‐Alkaline Zinc‐Air Batteries

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Reversible Discharge Products in Li–Air Batteries

Cited by 36 publications

References 208 publications

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O2 Battery with Large Cyclic Capacity

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O2 Battery with Large Cyclic Capacity

Development, Essence, and Application of a Metal-Catalysis Battery

Hydrophobic and Homogeneous Conductive Carbon Matrix for High‐Rate Non‐Alkaline Zinc‐Air Batteries

Contact Info

Product

Resources

About

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity

Cooperative Effect of Redox Mediator and Ion Selective Membrane to Inhibit the Shuttle Effect for Li–O₂ Battery with Large Cyclic Capacity