Hexagonal boron nitride induces anion trapping in a polyethylene oxide based solid polymer electrolyte for lithium dendrite inhibition

Li, Yuhan; Zhang, Libo; Sun, Zhanbo; Gao, Guoxin; Lu, Shiyao; Zhu, Min; Zhang, Yanfeng; Jia, Zhiyu; Xiao, Chunhui; Bu, Huaitian; Xi, Kai

doi:10.1039/d0ta03677c

“…Theo ligomers also serve as disrupting agent for PEO chains,leading to the generation of amorphous region for Li ion immigration. As ac onsequence,the assembled cells utilizing the optimized composite [46][47][48][49][53][54][55][56][57][58][59][60][61][62][63] e) Safety test for the asobtained solid electrolyte under cutting and burning conditions.…”

Section: Discussionmentioning

confidence: 99%

In‐Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi‐Solid‐State Lithium Metal Batteries

He

¹

,

Cheng

²

,

Hu

³

et al. 2021

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Solid‐state lithium metal batteries built with composite polymer electrolytes using cubic garnets as active fillers are particularly attractive owing to their high energy density, easy manufacturing and inherent safety. However, the uncontrollable formation of intractable contaminant on garnet surface usually aggravates poor interfacial contact with polymer matrix and deteriorates Li+ pathways. Here we report a rational designed intermolecular interaction in composite electrolytes that utilizing contaminants as reaction initiator to generate Li+ conducting ether oligomers, which further emerge as molecular cross‐linkers between inorganic fillers and polymer matrix, creating dense and homogeneous interfacial Li+ immigration channels in the composite electrolytes. The delicate design results in a remarkable ionic conductivity of 1.43×10−3 S cm−1 and an unprecedented 1000 cycles with 90 % capacity retention at room temperature is achieved for the assembled solid‐state batteries.

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“…At the same time, despite the advantages inherent in SPEs, their practical application is limited due to the low ionic conductivity at room temperature. [19][20][21][22][23][24][25] For example, for a well-studied SPE based on polyethylene oxide (PEO), the ionic conductivity is in the range from 10 À8 to 10 À4 S cm À1 . 26,27 The reason for the low level of conductivity in this case is the appearance of obstacles to the transport of lithium ions, which, due to the transition of complexes into a more ordered structure, appear below the crystallization temperature.…”

Section: Introductionmentioning

confidence: 99%

Gel-polymer electrolytes based on polyurethane ionomers for lithium power sources

Davletbaeva

¹

,

Nizamov

²

,

Yudina

³

et al. 2021

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“…b) Rate performance and c) cycling performance of PLLE-3 and SPE-TiO 2 -1.1EC electrolytes. d) Comparison of the cycling performance of selected typical solid composite electrolytes [46][47][48][49][53][54][55][56][57][58][59][60][61][62][63]. e) Safety test for the asobtained solid electrolyte under cutting and burning conditions.…”

mentioning

confidence: 99%

In‐Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi‐Solid‐State Lithium Metal Batteries

He

¹

,

Cheng

²

,

Hu

³

et al. 2021

View full text Add to dashboard Cite

Solid‐state lithium metal batteries built with composite polymer electrolytes using cubic garnets as active fillers are particularly attractive owing to their high energy density, easy manufacturing and inherent safety. However, the uncontrollable formation of intractable contaminant on garnet surface usually aggravates poor interfacial contact with polymer matrix and deteriorates Li+ pathways. Here we report a rational designed intermolecular interaction in composite electrolytes that utilizing contaminants as reaction initiator to generate Li+ conducting ether oligomers, which further emerge as molecular cross‐linkers between inorganic fillers and polymer matrix, creating dense and homogeneous interfacial Li+ immigration channels in the composite electrolytes. The delicate design results in a remarkable ionic conductivity of 1.43×10−3 S cm−1 and an unprecedented 1000 cycles with 90 % capacity retention at room temperature is achieved for the assembled solid‐state batteries.

show abstract

Hexagonal boron nitride induces anion trapping in a polyethylene oxide based solid polymer electrolyte for lithium dendrite inhibition

Abstract: Lithium ion conductivity and mechanical strength of a PEO based composite solid polymer electrolyte are improved by adding h-BN.

Cited by 102 publications

References 62 publications

In‐Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi‐Solid‐State Lithium Metal Batteries

In‐Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi‐Solid‐State Lithium Metal Batteries

Gel-polymer electrolytes based on polyurethane ionomers for lithium power sources

In‐Situ Intermolecular Interaction in Composite Polymer Electrolyte for Ultralong Life Quasi‐Solid‐State Lithium Metal Batteries

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