2021
DOI: 10.1126/science.abb9554
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A rechargeable zinc-air battery based on zinc peroxide chemistry

Abstract: Rechargeable alkaline zinc-air batteries promise high energy density and safety but suffer from the sluggish 4 electron (e−)/oxygen (O2) chemistry that requires participation of water and from the electrochemical irreversibility originating from parasitic reactions caused by caustic electrolytes and atmospheric carbon dioxide. Here, we report a zinc-O2/zinc peroxide (ZnO2) chemistry that proceeds through a 2e−/O2 process in nonalkaline aqueous electrolytes, which enables highly reversible redox reactions in zi… Show more

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Cited by 673 publications
(487 citation statements)
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References 68 publications
(32 reference statements)
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“…Molecular polarity index (MPI) obtained from the electrostatic potential calculated at the quantum chemistry level has also been proposed to correlate with the ion hydrophilicity, the larger value of the MPI corresponding to a more hydrophilic character. 20 Results obtained for MPI computed for the different anions are shown on Figure 4. Here again, it is clear that this descriptor is not able to catch differences between the Br -, NO3 -, Iand ClO4since they all display very similar MPIs.…”
Section: Probing the Influence Of The Anion Hydrophobicity Using Gas Phase Dft Calculationsmentioning
confidence: 99%
“…Molecular polarity index (MPI) obtained from the electrostatic potential calculated at the quantum chemistry level has also been proposed to correlate with the ion hydrophilicity, the larger value of the MPI corresponding to a more hydrophilic character. 20 Results obtained for MPI computed for the different anions are shown on Figure 4. Here again, it is clear that this descriptor is not able to catch differences between the Br -, NO3 -, Iand ClO4since they all display very similar MPIs.…”
Section: Probing the Influence Of The Anion Hydrophobicity Using Gas Phase Dft Calculationsmentioning
confidence: 99%
“…The zinc-air battery has been regarded as an ideal energy storage technology with attractive advantages of low cost, safety, and zero pollution. [1][2][3][4][5][6][7][8][9][10] For the rechargeable Zn-air battery, bifunctional electrocatalysts on air electrode for oxygen reduction/evolution reaction (ORR/OER) are urgently needed due to current drawbacks. Precious metal based catalysts (such as Pt/C and RuO 2 ) are expensive, while low-cost transition-metal-based catalysts still does not meet commercial requirements.…”
mentioning
confidence: 99%
“…A holistic modular and chemistry neutral approach, integrating all the critical elements outlined above: BIG-MAP, operando interface monitoring, multisensory techniques, and self-healing, coupled with high-throughput syntheses experiments, manufacturability and recyclability by design, will enable accelerated discovery and development of next generation of ultra-high performant and smart batteries. Irrespectively, concentrating the research and industrial development on "the nearest in time chemistries" foreseen, as formulated in the European SET-Plan action 7 [125] for the transport sector, or other battery chemistries further away in the development expectations, [3] a closed-loop discovery cycle dependent on the fast development of data-driven and datacentric tools and approaches including autonomous synthesis robotics [59] and faster and more accurate high-throughput characterization methods will be a prerequisite. In BATTERY 2030+ and BIG-MAP, the focus on decomposing, controlling, and engineering the interfaces in different batteries have a special attention.…”
Section: Perspectivesmentioning
confidence: 99%
“…
The concurrent transformations of the automotive sector toward e-mobility and the applicability of data-driven approaches in science and energy technology, [1] provides a synergistic opportunity to accelerate the battery discovery and manufacturing processes and to optimize the performance and lifetime of battery cells. [2] As new high-performance battery materials, chemistries, and cell designs emerge to compete with existing Li-ion batteries, [3] they face a common challenge in controlling the complex dynamic processes occurring at battery interfaces, which span a multitude of time-and length scales. [4] Developing a versatile and chemistry neutral infrastructure that is capable of monitoring, predicting, and controlling the dynamic properties and evolution of these interfaces and interphases like the solidelectrolyte interphase (SEI), is a cornerstone of the long-term roadmap of the large-scale European initiative BATTERY 2030+ [5] and the BIG-MAP project in particular.
…”
mentioning
confidence: 99%