Tea polyphenol-inspired tannic acid-treated polypropylene membrane as a stable separator for lithium–oxygen batteries

Wu, Chaolumen; Li, Taoran; Liao, Chenbo; Li, Lei; Yang, Jun

doi:10.1039/c7ta03456c

Cited by 36 publications

(14 citation statements)

References 26 publications

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“…Meanwhile, separators with a functional layer can enhance the cycling stability and act as a chemical trap for the confinement of active materials (e.g., polysulfides, transition metal ions, and superoxide radicals). Polymer separators with additional functions, which include thermal shutdown, nonflammability, self‐healing, and redox species‐trapping, have been highlighted for enhancing battery performance and improving safety.…”

Section: Designer Separators For Electrochemical Functionmentioning

confidence: 99%

“…The transport of superoxide radicals was suppressed rigorously due to the poreless structure, while the diffusion of Li ions still proceeded from the interchain space of the PU. The conventional PP membrane was coated with tannic acid as a superoxide radical scavenger, which improved the antioxidant ability and radical scavenging ability.…”

Section: Designer Separators For Electrochemical Functionmentioning

confidence: 99%

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Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

Zhang

Qian

et al. 2017

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Next-generation rechargeable batteries that offer high energy density, efficiency, and reversibility rely on cell configurations that enable synergistic operations of individual components. They must also address multiple emerging challenges,which include electrochemical stability, transport efficiency, safety, and active material loss. The perspective of this Review is that rational design of the polymeric separator, which is used widely in rechargeable batteries, provides a rich set of opportunities for new innovations that should enable batteries to meet many of these needs. This perspective is different from the conventional view of the polymer separator as an inert/passive unit in a battery, which has the sole function to prevent direct contact between electrically conductivecomponents that form the battery anode and cathode. Polymer separators, which serve as the core component in a battery, bridge the electrodes and the electrolyte with a large surface contact that can be utilized to apply desirable functions. This Review focuses specifically on recent advances in polymer separator systems, with a detailed analysis of several embedded functional agents that are incorporated to improve mechanical robustness, regulate ion and mass transport, and retard flammability. The discussion is also extended to new composite separator concepts that are designated traditionally as polymer/gel electrolytes.

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Section: Designer Separators For Electrochemical Functionmentioning

confidence: 99%

Section: Designer Separators For Electrochemical Functionmentioning

confidence: 99%

Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

Zhang

Qian

et al. 2017

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180

125

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“…In the same manner, tannic acid coating on PDMS substrate is though to undergo self-polymerization in the presence of Tris buffer solution, and this is also evident in the study of Barret and colleagues . However, complexes can also be formed with tannic acid through chelation with metal ions. , Besides, the versatility of this approach was demonstrated in the work of Ejima et al in coating substrates of different geometries, utilizing Fe(III) ions such that tannic acid coordination complexes are formed. The establishment of a cross-linked film is initiated by the formation of stable octahedral complexes with Fe(III) ions, which serve as their core center, reacting with three galloyl groups from TA; hence, giving rise to the capability of TA molecule to bind with several Fe(III) ions . The coated substrate then possesses hydroxyl groups offered by the tannic acid film, which allows covalent bonds to form with nucleophilic group composed of polymers and other molecules …”

Section: Resultsmentioning

confidence: 90%

“…35 However, complexes can also be formed with tannic acid through chelation with metal ions. 37,38 Besides, the versatility of this approach was demonstrated in the work of Ejima et al in coating substrates of different geometries, utilizing Fe(III) ions such that tannic acid coordination complexes are formed. 33 The establishment of a cross-linked film is initiated by the formation of stable octahedral complexes with Fe(III) ions, which serve as their core center, reacting with three galloyl groups from TA; hence, giving rise to the capability of TA molecule to bind with several Fe(III) ions.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

A Nondestructive Surface Zwitterionization of Polydimethylsiloxane for the Improved Human Blood-inert Properties

Dizon

Clarin

Venault

et al. 2018

ACS Appl. Bio Mater.

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Polydimethylsiloxane (PDMS) is extensively used in the field of biomaterials. However, its hydrophobicity still limits its range of applications and makes it prone to biofouling. Various techniques are currently utilized to overcome this limitation, but most of them reduce some of the PDMS prime characteristics, such as its mechanical strength and optical transparency. In this work, we employed an original two-step coating process to bypass harsh treatments on PDMS like UV–ozone or plasma treatment. A pre-coating step of tannic acid-Fe(III) complex was performed prior to the zwitterionization of the PDMS with poly(glycidyl methacrylate-co-sulfobetaine methacrylate) or poly(GMA-co-SBMA) by a “grafting-to” approach. Successful coating was evidenced by a decrease of the water-contact angle from 118° to 79°. The process was optimized, and the optimized coating condition led to a significant improvement of the PDMS biocompatibility while maintaining its mechanical property and optical transparency. In addition, a 90% reduction of Escherichia coli attachment and fibrinogen plasma protein, an 80% reduction of red blood cells and cells from whole-blood attachment, and a 60% reduction of platelets adhesion were measured. We further tested the potential of the zwitterionic PDMS material as a storage vessel for platelet-rich plasma under physiological conditions. Platelet activation was decreased from 10.95% using virgin PDMS to 3.35% with the coated sample in a period of 2 days.

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“…Wu et al coated the tea polyphenol-inspired tannic acid on a PP membrane as a superoxide radical scavenger. [91] By means of the intrinsic antioxidant ability, the modified membrane could prevent the penetration of the superoxide radicals, while providing high liquid electrolyte uptake and ionic conductivity.…”

Section: Separator Functionalization To Alleviate Anode Corrosion By 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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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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Tea polyphenol-inspired tannic acid-treated polypropylene membrane as a stable separator for lithium–oxygen batteries

Cited by 36 publications

References 26 publications

Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

A Nondestructive Surface Zwitterionization of Polydimethylsiloxane for the Improved Human Blood-inert Properties

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

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Tea polyphenol-inspired tannic acid-treated polypropylene membrane as a stable separator for lithium–oxygen batteries

Cited by 36 publications

References 26 publications

Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

Design Principles of Functional Polymer Separators for High‐Energy, Metal‐Based Batteries

A Nondestructive Surface Zwitterionization of Polydimethylsiloxane for the Improved Human Blood-inert Properties

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

Contact Info

Product

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About

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