An intricately designed poly(vinylene carbonate-acrylonitrile) copolymer electrolyte enables 5 V lithium batteries

Wang, Peng; Chai, Jingchao; Zhang, Zhonghua; Zhang, Huanrui; Ma, Yue; Xu, Gaojie; Du, Huiping; Liu, Tianmeng; Li, Guicun; Cui, Guanglei

doi:10.1039/c9ta00204a

Cited by 84 publications

(73 citation statements)

References 46 publications

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“…This law may be applicable to modify the electrochemical stability of other polymer electrolytes. As shown in Table , the electrochemical stability of poly(vinylene carbonate‐acrylonitrile) P(VCA‐AN) and PVCA electrolytes is 5.2 V and 4.8 V, respectively, indicating the polar group CN also further enhances the antioxidant ability of vinylene carbonate (VC) segments in P(VCA‐AN) . We provide the HOMO energy level of polar group commonly in SPEs (Figure ), which will help researchers to design high antioxidant chemical structure for polymer electrolytes.…”

Section: High‐voltage Compatibility Of Polymer Electrolytesmentioning

confidence: 91%

Intermolecular Chemistry in Solid Polymer Electrolytes for High‐Energy‐Density Lithium Batteries

et al. 2019

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Solid polymer electrolytes (SPEs) have aroused wide interest in lithium batteries because of their sufficient mechanical properties, superior safety performances, and excellent processability. However, ionic conductivity and high‐voltage compatibility of SPEs are still yet to meet the requirement of future energy‐storage systems, representing significant barriers to progress. In this regard, intermolecular interactions in SPEs have attracted attention, and they can significantly impact on the Li+ motion and frontier orbital energy level of SPEs. Recent advances in improving electrochemcial performance of SPEs are reviewed, and the underlying mechanism of these proposed strategies related to intermolecular interaction is discussed, including ion–dipole, hydrogen bonds, π–π stacking, and Lewis acid–base interactions. It is hoped that this review can inspire a deeper consideration on this critical issue, which can pave new pathway to improve ionic conductivity and high‐voltage performance of SPEs.

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Section: High‐voltage Compatibility Of Polymer Electrolytesmentioning

confidence: 91%

Intermolecular Chemistry in Solid Polymer Electrolytes for High‐Energy‐Density Lithium Batteries

et al. 2019

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“…In this regard, the configuration of multifunctional catalytic materials characteristic of light weight, low price, and controllable structure architecture is the direction for conquering the challenges in practical LSBs. 5)Recently, solid‐state electrolytes have attracted enormous attention related to the reliable safety and the outstanding ability to deal with shuttle effects, which may be the desired alternative for the high‐energy‐density and high‐safety LSBs. [ 178,179 ] Applying catalytic materials to solid‐state LSBs, especially PEO‐based electrolyte which was identified with a degree of shuttle effect, may achieve incredible effect in the aspect of accelerating electrochemical reaction at the electrolyte/electrode interface and further inhibiting the shuttle effect.…”

Section: Discussionmentioning

confidence: 99%

Emerging Catalysts to Promote Kinetics of Lithium–Sulfur Batteries

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Huang

et al. 2021

Advanced Energy Materials

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Lithium–sulfur batteries (LSBs) with a high theoretical capacity of 1675 mAh g−1 hold promise in the realm of high‐energy‐density Li–metal batteries. To cope with the shuttle effect and sluggish transformation of soluble lithium polysulfides (LiPSs), varieties of traditional metal‐based materials (such as metal, metal oxides, metal sulfides, metal nitrides, and metal carbides) with unique catalytic activity for accelerating LiPSs redox have been exploited to fundamentally inhibit the shuttle effect and improve the performance of LSBs. Concurrently, some budding catalytic materials also possess enormous potential for facilitating LiPSs redox reaction in LSBs, including metal borides, metal phosphides, metal selenides, single atoms, and defect‐engineered materials. Here, recent advances in these emerging catalytic candidates as well as the evaluation methods and parameters for catalytic materials are comprehensively summarized for the first time. New insights are also given to aid in the design of high‐performance LSBs and satisfy the high expectation in the future, including the exposure of the active sites and adsorption‐catalysis synergy strategies. Finally, the current challenges and prospects for designing highly efficient catalytic materials are highlighted, aiming at providing guidance for configuring catalytic materials to make sure high‐energy and long‐life LSBs.

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“…98,126 However, in practical application, the μ c could shift down to a lower state than the HOMO of SPEs, resulting in an interfacial parasitic reaction. Thus, strategies have been proposed to regulate the frontier orbital energy level of SPEs, lowering the HOMO of SPEs, and increasing high-voltage stability, including molecular design, 127,128 highly concentrated electrolytes, 129 and so forth.…”

Section: Improving High-voltage Stabilitymentioning

confidence: 99%

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

et al. 2021

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Solid polymer electrolytes (SPEs) have become increasingly attractive in solidstate lithium-ion batteries (SSLIBs) in recent years because of their inherent properties of flexibility, processability, and interfacial compatibility. However, the commercialization of SPEs remains challenging for flexible and highenergy-density LIBs. The incorporation of functional additives into SPEs could significantly improve the electrochemical and mechanical properties of SPEs and has created some historical milestones in boosting the development of SPEs. In this study, we review the roles of additives in SPEs, highlighting the working mechanisms and functionalities of the additives. The additives could afford significant advantages in boosting ionic conductivity, increasing ion transference number, improving high-voltage stability, enhancing mechanical strength, inhibiting lithium dendrite, and reducing flammability. Moreover, the application of functional additives in high-voltage cathodes, lithium-sulfur batteries, and flexible lithium-ion batteries is summarized. Finally, future research perspectives are proposed to overcome the unresolved technical hurdles and critical issues in additives of SPEs, such as facile fabrication process, interfacial compatibility, investigation of the working mechanism, and special functionalities.

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An intricately designed poly(vinylene carbonate-acrylonitrile) copolymer electrolyte enables 5 V lithium batteries

Abstract: A novel high-voltage polymer electrolyte based on poly(vinylene carbonate-acrylonitrile) is successfully prepared for LiNi0.5Mn1.5O4 lithium batteries, which endows the high voltage batteries with significant improved performance.

Cited by 84 publications

References 46 publications

Intermolecular Chemistry in Solid Polymer Electrolytes for High‐Energy‐Density Lithium Batteries

Intermolecular Chemistry in Solid Polymer Electrolytes for High‐Energy‐Density Lithium Batteries

Emerging Catalysts to Promote Kinetics of Lithium–Sulfur Batteries

Functional additives for solid polymer electrolytes in flexible and high‐energy‐density solid‐state lithium‐ion batteries

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