Extremely stable Li-metal battery enabled by piezoelectric polyacrylonitrile quasi-solid-state electrolytes

Peng, Hongzhi; Xu, Zhong; Zhou, Yunjie; Huang, Junfeng; Zhang, Jieling; Ao, Yong; Xie, Yongbing; He, Hanyu; Zhang, Xiong; Yang, Weiqing; Zhang, Haitao

doi:10.1016/j.jmat.2023.04.011

Cited by 10 publications

(3 citation statements)

References 45 publications

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“…101,102 The elastic modulus of PEO-based electrolytes is lower by 2–3 orders of magnitude than that of Li metal. 103 According to the theory proposed by Monroe and Newman, SPEs are unable to suppress the growth of Li dendrites. 8 Furthermore, due to the crystallization at low temperatures, low carrier concentration, and low solubility for Li + , PEO-based SPEs exhibit low ionic conductivity at room temperature, as low as 10 −7 S cm −1 , necessitating operation at elevated temperatures (40–70 °C) to enhance ionic conductivity.…”

Section: Strategies For Suppressing LI Dendritesmentioning

confidence: 99%

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Yang,

Wang,

Guo

et al. 2024

J. Mater. Chem. A

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Section: Strategies For Suppressing LI Dendritesmentioning

confidence: 99%

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Yang,

Wang,

Guo

et al. 2024

J. Mater. Chem. A

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“…29 Various strategies have been explored to address these issues, including blending, 30 copolymerization, 31 and introducing inorganic fillers. 32 However, most of the polymer matrices employed in QSEs, including poly(vinylidene fluoride-co-hexafluoroyl), 33 polyacrylonitrile, 34 and poly(ethylene oxide), 35 still face challenges in achieving both high mechanical strength and high ionic conductivity concurrently. This arises from the inherent trade-off between ionic conductivity and mechanical strength.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin, Mechanically Robust Quasi-Solid Composite Electrolyte for Solid-State Lithium Metal Batteries

Wang,

Xu,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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Herein, we present the preparation and properties of an ultrathin, mechanically robust, quasi-solid composite electrolyte (SEO-QSCE) for solid-state lithium metal battery (SLB) from a well-defined polystyrene-b-poly(ethylene oxide) diblock copolymer (SEO), Li 6.75 La 3 Zr 1.75 Ta 0.25 O 12 nanofiller, and fluoroethylene carbonate plasticizer. Compared with the ordered lamellar microphase separation of SEO, the SEO-QSCE displays bicontinuous phases, consisting of a Li + ion conductive poly-(ethylene oxide) domain and a mechanically robust framework of the polystyrene domain. Therefore, the 12 μm-thick SEO-QSCE membrane exhibits an exceptional ionic conductivity of 1.3 × 10 −3 S cm −1 at 30 °C, along with a remarkable tensile strength of 5.1 MPa and an elastic modulus of 2.7 GPa. The high mechanical robustness and the self-generated LiF-rich SEI enable the SEO-QSCE to have an extraordinary lithium dendrite prohibition effect. The SLB of Li|SEO-QSCE|LiFePO 4 reveals superior cycling performances at 30 °C for over 600 cycles, maintaining an initial discharge capacity of 145 mAh g −1 and a remarkable capacity retention of 81% (117 mAh g −1 ) after 400 cycles at 0.5 C. The highvoltage SLB of Li|SEO-QSCE|LiNi 0.5 Co 0.3 Mn 0.2 O 2 displays good cycling stability for over 150 cycles at 30 °C. Moreover, the exceptional robustness of SEO-QSCE enables the high-voltage solid-state pouch cell of Li|SEO-QSCE|LiNi 0.5 Co 0.3 Mn 0.2 O 2 with high flexibility and excellent safety features. The current investigation delivers a promising and innovative approach for preparing quasisolid electrolytes with features of ultrathin design, mechanical robustness, and exceptional electrochemical performance for highvoltage SLBs.

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“…A great deal of strategies have been devoted to solving these problems, such as polymer blending cross-linking, design and synthesis of novel polymers with unique structural properties, and addition of organic plasticizers and inorganic fillers. − Recently, the combination of inorganic fillers and polymer matrix has been a research hotspot because of its ability to afford composite SSEs with fast ionic conductivity, good interfacial contact, and high mechanical strength by a simple and low-cost method. Chen et al added Ca-doped CeO 2 (Ca–CeO 2 ) nanotubes as one-dimensional (1D) nanofillers to PEO polymer solid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Perovskite CsPbI₃ Nanowire-Reinforced PEO Electrolytes Toward High-Rate All-Solid-State Lithium–Metal Battery

Zhang,

Jia,

Wang

et al. 2023

ACS Sustainable Chem. Eng.

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Polymer solid-state electrolytes (SSEs) usually suffer from low ionic conductivity and interface instability between the electrolyte and lithium metal. Herein, a strategy using perovskite CsPbI3 nanowires (CsPbI3–NWs) to reinforce the poly(ethylene oxide) (PEO) electrolyte (PLN) has been developed to build a high-rate all-solid-state lithium–metal battery (ASSLMB). The principle is that the addition of CsPbI3–NWs significantly reduces the crystallinity of PEO and promotes the dissociation of Li+-ion, therefore leading to a large Li+-ion migration number (t Li +) (0.61) and excellent ionic conductivity (1.66 × 10–4 S cm–1) at 30 °C. Meanwhile, the lithium dendrite growth is effectively suppressed and a stable SEI is formed in the Li|PLN|Li ASSLMB. Moreover, the Li|PLN|LiFePO4 ASSLMBs possess remarkable rate capability (∼94.3 mAh g–1 under 5C), high Coulombic efficiency (CE) (∼99.7% on average), and cycling stability (8.6% capacity loss for 200 cycles at 0.8C) at 90 °C. This work reveals that CsPbI3–NW-reinforced PEO-based SSE is a good candidate to develop high-performance ASSLMBs by increasing the ionic conducting ability and promoting the formation of a stable electrochemical interface.

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Extremely stable Li-metal battery enabled by piezoelectric polyacrylonitrile quasi-solid-state electrolytes

Cited by 10 publications

References 45 publications

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Ultrathin, Mechanically Robust Quasi-Solid Composite Electrolyte for Solid-State Lithium Metal Batteries

Perovskite CsPbI₃ Nanowire-Reinforced PEO Electrolytes Toward High-Rate All-Solid-State Lithium–Metal Battery

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Extremely stable Li-metal battery enabled by piezoelectric polyacrylonitrile quasi-solid-state electrolytes

Cited by 10 publications

References 45 publications

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Interfacial engineering of suppressing Li dendrite growth in all solid-state Li-metal batteries

Ultrathin, Mechanically Robust Quasi-Solid Composite Electrolyte for Solid-State Lithium Metal Batteries

Perovskite CsPbI3 Nanowire-Reinforced PEO Electrolytes Toward High-Rate All-Solid-State Lithium–Metal Battery

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Product

Resources

About

Perovskite CsPbI₃ Nanowire-Reinforced PEO Electrolytes Toward High-Rate All-Solid-State Lithium–Metal Battery