Self-doped block copolymer electrolytes for solid-state, rechargeable lithium batteries

Sadoway, Donald R.; Huang, Biying; Trapa, Patrick; Soo, Philip P.; Bannerjee, Pallab; Mayes, Anne M.

doi:10.1016/s0378-7753(01)00642-5

Cited by 122 publications

(81 citation statements)

References 4 publications

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“…Among these approaches, the addition of nanoparticles, such as Al 2 O 3 , [213][214][215][216] SiO 2 , [23,29,31,[217][218][219] and TiO 2 , [218,220,221] was found to be very effective for many reasons. [39,[222][223][224][225][226][227][228][229][230][231] The most interesting attribute of the copolymer electrolytes is the self-assembled microstructures, which result in properties with a good balance between ion conductivity and mechanical performance. Secondly, the nanoparticles can form special pathways in the interphase for ion transportation, which further improves the ion conductivity.…”

Section: Solid Polymer Electrolytesmentioning

confidence: 99%

“…[31] Copolymers with conductive blocks (usually PEO block) are also promising candidates for high-performance SPEs. [39,[222][223][224][225][226][227][228][229][230][231] The most interesting attribute of the copolymer electrolytes is the self-assembled microstructures, which result in properties with a good balance between ion conductivity and mechanical performance. Specifically, the ion-conducting PEO block provides a pathway for ion transportation, and other blocks, such as polyethylene (PE) or polystyrene (PS) blocks, form 3D connected frameworks for good mechanical properties.…”

Section: Solid Polymer Electrolytesmentioning

confidence: 99%

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Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

2014

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Increasing interest in flexible/wearable electronics, clean energy, electrical vehicles, and so forth is calling for advanced energy‐storage devices, such as high‐performance lithium‐ion batteries (LIBs), which can not only store energy efficiently and safely, but also possess additional properties, such as good mechanical properties to bear deformations or even to be used as structural components. These expectations first indicate the directions, but also raise new challenges for the advancement of energy materials. As one of the critical components in LIBs, the electrolyte connecting the two electrodes is vital for achieving the desired performances in batteries. In this Review, the developments of various liquid electrolytes (organic, ionic liquid, and aqueous electrolytes), solid electrolytes (solid polymer and inorganic solid), as well as gel electrolytes is briefly summarized and discussed. For each type of electrolyte, the challenging issues and possible solutions are discussed. In particular, safety, ionic conductivity, and contact/interface issues are emphasized. Finally, from a composite point of view, strategies for the development of high‐performance electrolytes with all‐round properties are proposed.

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Section: Solid Polymer Electrolytesmentioning

confidence: 99%

Section: Solid Polymer Electrolytesmentioning

confidence: 99%

Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

2014

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“…11,12 The theoretical advantages also include a spatially uniform anion distribution that enables the passage of larger currents through the cell, and lower joule heat per unit of current that lessens the chance of thermal runaway, and the absence of electrochemical interactions of anions with electrodes for improved stability. 13 A recent theoretical study 14 has suggested that single-ion conducting electrolytes can suppress the growth of lithium dendrites, which was followed by several experimental works 15−17 that confirmed the ability of single-ion conducting electrolytes to extend the lifetime of a battery cell using a lithium metal anode.…”

Section: Introductionmentioning

confidence: 97%

Poly(arylene ether)-Based Single-Ion Conductors for Lithium-Ion Batteries

Yoo

et al. 2015

Chem. Mater.

135

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Single-ion conducting electrolytes present a unique alternative to traditional binary salt conductors used in lithium-ion batteries. It has been shown theoretically that single-ion electrolytes can eliminate the salt concentration gradient and polarization loss in the cell that develop in a binary salt system, resulting in substantial improvements in materials utilization for high power and energy densities. Here, we describe synthesis and characterization of a class of single-ion electrolytes based on aromatic poly(arylene ether)s with pendant lithium perfluoroethyl sulfonates. The microporous polymer film saturated with organic carbonates exhibits a nearly unity Li + transference number, very high conductivities (e.g., > 10 −3 S m −1 at room temperature) over a wide range of temperatures, great electrochemical stability, and outstanding mechanical properties. Excellent cyclability with almost identical charge and discharge capacities has been demonstrated at ambient temperature in the batteries assembled from the prepared single-ion conductors.

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“…하지만, 고정된 음이온으로부터 전하의 전달을 기대할 수 없기 때문에, 자유로운 음이온이 존재하는 염-도핑 형(salt-doping) 고분자전해질에 비해 이온전도도가 상 대적으로 낮은 단점이 있다. 9) 특히 강한 이온 결합력 을 가지는 lithium carboxylate, lithium sulfonate 같 은 경우에, 리튬이온의 이동이 더욱 약해진다는 연구 결과들이 보고되고 있다. 10,11) 따라서 자기-도핑형 고분 자전해질의 연구는 낮은 이온전도도를 향상시킬 수 있 는 측면에서 집중적으로 진행되고 있다.…”

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Synthesis of Self-doped Poly(PEGMA-co-BF₃LiMA) Electrolytes and Effect of PEGMA Molecular Weight on Ionic Conductivities

Kim¹,

Ryu²

2012

Journal of the Korean Electrochemical Society

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초 록분자량이 각각 300(PEGMA300) 및 1100(PEGMA1100) g mol Abstract : Polymer electrolytes consisted of BF 3 LiMA and 300 (PEGMA300) or 1100 (PEGMA1100) g mol −1 of PEGMA were prepared and the electrochemical properties were characterized. Interestingly, the AC-impedance measurement shows 1.22 × 10 −5 S cm −1 of room temperature ionic conductivity from PEGMA1100 based solid polymer electrolytes while 8.54 × 10 −7 S cm −1 was observed in PEGMA300 based liquid polymer electrolytes. The more suitable coordination between lithium ion and ethylene oxide (EO) unit might be the reason of higher ionic conductivity which can be possible in PEGMA1100 based electrolytes since it has 23 EO units in monomer. The lithium ion transference number was found to be 0.6 due to the side reactions between BF 3 and lithium metal expecially for longer time but 0.9 was observed within 3000 seconds of measuring time which is strong evidence of a single-ion conductor.

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Self-doped block copolymer electrolytes for solid-state, rechargeable lithium batteries

Cited by 122 publications

References 4 publications

Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

Poly(arylene ether)-Based Single-Ion Conductors for Lithium-Ion Batteries

Synthesis of Self-doped Poly(PEGMA-co-BF₃LiMA) Electrolytes and Effect of PEGMA Molecular Weight on Ionic Conductivities

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Self-doped block copolymer electrolytes for solid-state, rechargeable lithium batteries

Cited by 122 publications

References 4 publications

Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

Development of Electrolytes towards Achieving Safe and High‐Performance Energy‐Storage Devices: A Review

Poly(arylene ether)-Based Single-Ion Conductors for Lithium-Ion Batteries

Synthesis of Self-doped Poly(PEGMA-co-BF3LiMA) Electrolytes and Effect of PEGMA Molecular Weight on Ionic Conductivities

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Synthesis of Self-doped Poly(PEGMA-co-BF₃LiMA) Electrolytes and Effect of PEGMA Molecular Weight on Ionic Conductivities