PEEK‐WC/Nanosponge Membranes for Lithium‐Anode Protection in Rechargeable Li−O<sub>2</sub> Batteries

Amici, Julia; Alidoost, Mojtaba; Caldera, Fabrizio; Versaci, Daniele; Zubair, Usman; Trotta, Francesco; Francia, Carlotta; Bodoardo, Silvia

doi:10.1002/celc.201800241

Cited by 15 publications

(10 citation statements)

References 53 publications

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“…[88] Benefiting from the superior segregation effect of CTFPNM, the Li-metal anode was effectively protected, which contributed to a high CE of 99.3-99.5% and extended operation over 250 cycles with a potential gap of only 0.47 V. Amici et al prepared a novel membrane by using an amorphous modified polyetheretherketone (PWC) incorporated with dextrin-based nanosponges. [89] Taking advantage of high complexing ability toward macromolecules and gases, the 3D polymer membrane exhibited low O 2 permeability with high Li + conductivity, thereby allowing improvements in cyclability and reversibility.…”

Section: Separator Functionalization To Alleviate Anode Corrosion By mentioning

confidence: 99%

“…prepared a novel membrane by using an amorphous modified polyetheretherketone (PWC) incorporated with dextrin‐based nanosponges. [ 89 ] Taking advantage of high complexing ability toward macromolecules and gases, the 3D polymer membrane exhibited low O 2 permeability with high Li + conductivity, thereby allowing improvements in cyclability and reversibility.…”

Section: Developments and Applications Of Porous Materials For Li–o2 mentioning

confidence: 99%

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Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Wang

et al. 2020

Advanced Materials

143

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Li-O 2) batteries with high theoretical energy densities offer considerable potential for a new generation of energy storage technology. [1] In 1996, the first nonaqueous Li-O 2 battery was introduced with a polymer organic electrolyte and a carbon-cobalt composite cathode by Abraham and Jiang. [2] This was followed by the verification of the rechargeability of Li-O 2 batteries with manganese dioxide-super S cathodes for over 50 cycles by Bruce and co-workers, [3] after which nonaqueous Li-O 2 batteries received substantial research attention worldwide. A typical nonaqueous Li-O 2 battery includes a Li metal anode, an aprotic electrolyte and an O 2 cathode. It operates according to the reaction 2Li + O 2 ↔ Li 2 O 2 (2.96 V vs Li/Li +), in which O 2 is reduced to form Li 2 O 2 on the cathode during discharging and Li 2 O 2 is decomposed to O 2 and Li + through a reversible charging process. In this way, the battery delivers exceptional theoretical energy density of ≈3600 Wh kg −1. [4] This report is centered on nonaqueous Li-O 2 batteries, and the use of the term "Li-O 2 batteries" mentioned below represents "nonaqueous Li-O 2 batteries." To date, enormous progress has been achieved in the understanding and application of high-performance Li-O 2 batteries, however, their low practical discharge capacity, poor rate capability, low round-trip efficiency, and inferior cycling stability have greatly blocked their practical applications. The current major scientific and technical challenges of Li-O 2 batteries can be summarized as follows. 1) The slow kinetics of formation and decomposition of the discharge products lead to poor rate capability and low round-trip efficiency. 2) Cathode corrosion and electrolyte decomposition due to the attack by the discharge intermediates such as superoxide species, giving rise to poor cycling stability. 3) Pore clogging on the cathode arising from the stacking of insulated, insoluble discharge products blocks the mass transfer and oxygen/Li + diffusion, limiting the capacity and degrading the cycling performance. 4) The inevitable side reactions between the highly reactive Li anode and the organic electrolyte, crossover O 2 , CO 2 , etc., and the redox mediators (RMs), give rise to premature battery death. [1a,5] 5) The unavoidable Li dendrites caused by uncontrollable deposition of lithium, as well as the risk of collapse of the lithium anode due to the volume change during iterative plating/stripping processes, increase the probability of safety problems. [6] Consequently, the slow kinetics of Li 2 O 2 Porous materials possessing high surface area, large pore volume, tunable pore structure, superior tailorability, and dimensional effect have been widely applied as components of lithium-oxygen (Li-O 2) batteries. Herein, the theoretical foundation of the porous materials applied in Li-O 2 batteries is provided, based on the present understanding of the battery mechanism and the challenges and advantageous qualities of porous materials. Furthermore, recent progress in porous material...

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Section: Separator Functionalization To Alleviate Anode Corrosion By mentioning

confidence: 99%

Section: Developments and Applications Of Porous Materials For Li–o2 mentioning

confidence: 99%

Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Wang

et al. 2020

Advanced Materials

143

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“…Dextrin/β‐cyclodextrin nanosponge was incorporated into a modified polyetheretherketone (PWC) and flat sheet membranes were generated to protect Li anodes. The membrane has a 3D network to protect highly reactive Li anodes from oxygen crossover . Moreover, ceramic fillers could integrate with polymers to improve the rigidity of the composite.…”

Section: Strategies For Protecting LI Anodes In Li‐o2 Batteriesmentioning

confidence: 99%

Recent Progress in Protecting Lithium Anodes for Li‐O₂ Batteries

2019

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LiÀ O 2 batteries with extremely high theoretical energy density have garnered great attention over the last decade. To realize practical applications, numerous efforts have been made to solve the critical problems. Li anodes, as one of the most important part of LiÀ O 2 batteries, play a vital role in improving the cycle life of batteries. The unresolved issues related to lithium dendrites and contaminant (O 2 and H 2 O) crossover from cathodes to anodes dramatically influence the battery performance. In this review, we analyze the challenging issues of Li anodes in LiÀ O 2 batteries and summarize the strategies to achieve high performance of LiÀ O 2 batteries and the recent progress in this field. The prospective development of highly stable Li anodes is also discussed.

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“…More importantly, dextrin-based NS are nanostructured within a three-dimensional network. Our group already reported the use of NS encapsulated in polymer matrices for different applications [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Nanosponge-Based Composite Gel Polymer Electrolyte for Safer Li-O2 Batteries

et al. 2021

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Li-O2 batteries represent a promising rechargeable battery candidate to answer the energy challenges our world is facing, thanks to their ultrahigh theoretical energy density. However, the poor cycling stability of the Li-O2 system and, overall, important safety issues due to the formation of Li dendrites, combined with the use of organic liquid electrolytes and O2 cross-over, inhibit their practical applications. As a solution to these various issues, we propose a composite gel polymer electrolyte consisting of a highly cross-linked polymer matrix, containing a dextrin-based nanosponge and activated with a liquid electrolyte. The polymer matrix, easily obtained by thermally activated one pot free radical polymerization in bulk, allows to limit dendrite nucleation and growth thanks to its cross-linked structure. At the same time, the nanosponge limits the O2 cross-over and avoids the formation of crystalline domains in the polymer matrix, which, combined with the liquid electrolyte, allows a good ionic conductivity at room temperature. Such a composite gel polymer electrolyte, tested in a cell containing Li metal as anode and a simple commercial gas diffusion layer, without any catalyst, as cathode demonstrates a full capacity of 5.05 mAh cm−2 as well as improved reversibility upon cycling, compared to a cell containing liquid electrolyte.

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PEEK‐WC/Nanosponge Membranes for Lithium‐Anode Protection in Rechargeable Li−O₂ Batteries

Cited by 15 publications

References 53 publications

Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Recent Progress in Protecting Lithium Anodes for Li‐O₂ Batteries

Nanosponge-Based Composite Gel Polymer Electrolyte for Safer Li-O2 Batteries

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PEEK‐WC/Nanosponge Membranes for Lithium‐Anode Protection in Rechargeable Li−O2 Batteries

Cited by 15 publications

References 53 publications

Porous Materials Applied in Nonaqueous Li–O2 Batteries: Status and Perspectives

Porous Materials Applied in Nonaqueous Li–O2 Batteries: Status and Perspectives

Recent Progress in Protecting Lithium Anodes for Li‐O2 Batteries

Nanosponge-Based Composite Gel Polymer Electrolyte for Safer Li-O2 Batteries

Contact Info

Product

Resources

About

PEEK‐WC/Nanosponge Membranes for Lithium‐Anode Protection in Rechargeable Li−O₂ Batteries

Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Porous Materials Applied in Nonaqueous Li–O₂ Batteries: Status and Perspectives

Recent Progress in Protecting Lithium Anodes for Li‐O₂ Batteries