Conducting polymer paper-derived separators for lithium metal batteries

Wang, Zhaohui; Pan, Ruijun; Xu, Chao; Ruan, Changqing; Edström, Kristina; Strömme, Maria; Nyholm, Leif

doi:10.1016/j.ensm.2018.02.006

Cited by 66 publications

(51 citation statements)

References 76 publications

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“…Wang's group employed a porous overoxidized polypyrrole (OPPy) paper as LIBs separator by treating PPy/cellulose composite with base and heat-treatment. [419] The overoxidation procedure could effectively disturb the conjugation units of PPy without collapsing their porous nature, leading to insulative separator. The rigid and porous skeleton with polar heteroatom-doping group simultaneously improved the current distribution, thermal stability, and electrolyte wettability.…”

Section: Li-ion Battery Separatormentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

185

114

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The demand for practical and cost-effective environmental treatment and energy storage materials is exploding. Porous polymeric and carbonaceous materials have attracted tremendous interest on account of their welldeveloped porosity and tunable surface chemistry. Functionalization of pore structures further enhances their properties for environmental treatment and energy storage. Herein, the procedures for functionalization of porous structures are introduced, including predesign and postsynthetic strategies. Subsequently, the important advancements of emerging porous polymers for environmental treatment in sorption (e.g., organic micropollutant adsorption, heavy metal ion removal, radionuclide extraction, and oil absorption) and membrane separation (e.g., aqueous micropollutant separation, organic solvent nanofiltration, desalination and pervaporation), as well as for energy storage ranging from the electrodes and separators of batteries to supercapacitor electrodes are highlighted. Moreover, given the combined merits of high intrinsic conductivity, porosity, and physicochemical stability, novel polymer-based porous carbons for energy storage are also highlighted. Key functionalization chemistry for each application is discussed and an in-depth understanding of the structure-property relationships of these functional porous materials is provided. Finally, the challenges and perspectives of emerging functional porous polymeric and carbonaceous materials for environmental treatment and energy storage are proposed.

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Section: Li-ion Battery Separatormentioning

confidence: 99%

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Zheng

Lin

Zhang

et al. 2019

Adv Funct Materials

185

114

View full text Add to dashboard Cite

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“…In addition to minimizing the Li metal problems, there are also other reasons for developing new types of separators for LMBs . Commercial polyolefin separators have low thermal stabilities and unsatisfactory electrolyte wettability, which can give rise to problems when Li metal is used as battery anode.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

Pan

Sun

et al. 2018

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142

113

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Poor cycling stability and safety concerns regarding lithium (Li) metal anodes are two major issues preventing the commercialization of high-energy density Li metal-based batteries. Herein, a novel tri-layer separator design that significantly enhances the cycling stability and safety of Li metal-based batteries is presented. A thin, thermally stable, flexible, and hydrophilic cellulose nanofiber layer, produced using a straightforward paper-making process, is directly laminated on each side of a plasma-treated polyethylene (PE) separator. The 2.5 µm thick, mesoporous (≈20 nm average pore size) cellulose nanofiber layer stabilizes the Li metal anodes by generating a uniform Li flux toward the electrode through its homogenous nanochannels, leading to improved cycling stability. As the tri-layer separator maintains its dimensional stability even at 200 °C when the internal PE layer is melted and blocks the ion transport through the separator, the separator also provides an effective thermal shutdown function. The present nanocellulose-based tri-layer separator design thus significantly facilitates the realization of high-energy density Li metal-based batteries.

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“…In other studies, paper-type polymers were applied to increase ionic conductivity. Nyholm group prepared overoxidized polypyrrole (PPy) paper and cellulose composite films [ 104 ]. The overoxidizing process can electrically insulate PPy without structural damage ( Figure 7 b).…”

Section: Real Cases Of Modifying Separators For Li-metal Based Batmentioning

confidence: 99%

“…Overoxidation changes the structure of PPy. Reprinted with permission from [ 104 ]. Copyright (2018) Elsevier B.V. ( c ) Puncture strength according to polymer ratio (HDPE:UHMWPE = 27:3); (1) UHMWPE, Mw = 240,000,000 and (2) UHMWPE, Mw = 340,000,000.…”

Section: Figurementioning

confidence: 99%

A Review of Functional Separators for Lithium Metal Battery Applications

Jang

Jeong

et al. 2020

Materials

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Lithium metal batteries are considered “rough diamonds” in electrochemical energy storage systems. Li-metal anodes have the versatile advantages of high theoretical capacity, low density, and low reaction potential, making them feasible candidates for next-generation battery applications. However, unsolved problems, such as dendritic growths, high reactivity of Li-metal, low Coulombic efficiency, and safety hazards, still exist and hamper the improvement of cell performance and reliability. The use of functional separators is one of the technologies that can contribute to solving these problems. Recently, functional separators have been actively studied and developed. In this paper, we summarize trends in the research on separators and predict future prospects.

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Conducting polymer paper-derived separators for lithium metal batteries

Cited by 66 publications

References 76 publications

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Emerging Functional Porous Polymeric and Carbonaceous Materials for Environmental Treatment and Energy Storage

Nanocellulose Modified Polyethylene Separators for Lithium Metal Batteries

A Review of Functional Separators for Lithium Metal Battery Applications

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