Composite polymer electrolytes reinforced by hollow silica nanotubes for lithium metal batteries

Ji, Hu; Wang, Wan‐Hui; Zhu, Xinjun; Liu, Shaobing; Wang, Yujiang; Xu, Yongping; Zhou, Shengfeng; He, Xichan; Xue, Zhigang

doi:10.1016/j.memsci.2020.118697

Cited by 40 publications

(26 citation statements)

References 89 publications

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“…Such results demonstrate the superior stability at the electrode/electrolyte interface in typical SIPPI-protected Li-metal anodes, which results in the decreased overpotential of the Li@SIPPI/PVEC/SIPPI@Li cell with increasing cycle number at the beginning. As shown in Figure f, compared to previously reported solid-state electrolyte-based Li/Li symmetric cells, the SIPPI-based symmetric cell exhibits significantly longer cycling life with high current density (3 mA cm –2 ) and improved cationic transport number (0.79). ,,,,,,,− …”

Section: Resultsmentioning

confidence: 82%

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Single-Ion Conducting Polymeric Protective Interlayer for Stable Solid Lithium-Metal Batteries

Shan

Zhao

et al. 2022

ACS Appl. Mater. Interfaces

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With many reported attempts on fabricating single-ion conducting polymer electrolytes, they still suffer from low ionic conductivity, narrow voltage window, and high cost. Herein, we report an unprecedented approach on improving the cationic transport number (t Li +) of the polymer electrolyte, i.e., single-ion conducting polymeric protective interlayer (SIPPI), which is designed between the conventional polymer electrolyte (PVEC) and Li-metal electrode. Satisfied ionic conductivity (1 mS cm–1, 30 °C), high t Li + (0.79), and wide-area voltage stability are realized by coupling the SIPPI with the PVEC electrolyte. Benefiting from this unique design, the Li symmetrical cell with the SIPPI shows stable cycling over 6000 h at 3 mA cm–2, and the full cell with the SIPPI exhibits stable cycling performance with a capacity retention of 86% over 1000 cycles at 1 C and 25 °C. This incorporated SIPPI on the Li anode presents an alternative strategy for enabling high-energy density, long cycling lifetime, and safe and cost-effective solid-state batteries.

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Section: Resultsmentioning

confidence: 82%

“…EIS plots of the (d) Li/PVEC/Li cell with the SIPPI and (e) Li/PVEC/Li cell after cycling at 25 °C. (f) Comparison of cycle life of Li/Li symmetric cells in this work with the previously reported polymer electrolytes. ,,,,,,,− …”

Section: Resultsmentioning

confidence: 89%

Single-Ion Conducting Polymeric Protective Interlayer for Stable Solid Lithium-Metal Batteries

Shan

Zhao

et al. 2022

ACS Appl. Mater. Interfaces

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“…Figure a,b shows the ATR-FTIR spectra of poly(B-Vd)-LiTFSI and LiTFSI, respectively. The peaks at 1199 and 1142 cm –1 are assigned to the absorption peaks of the asymmetric stretching vibration of the −CF 3 group and stretching vibration of the −SO 2 group in the TFSI – anion. , For poly(B-Vd)-LiTFSI, the peaks of the sulfonyl group slightly move to a lower wavenumber (from 1199 to 1183 cm –1 and 1142 to 1130 cm –1 , respectively), implying that the cyclic structure in poly(B-Vd) could improve the interactions between the polymer chains and lithium salt (Figure b) . Meanwhile, Raman spectroscopy was also used to characterize the intermolecular interactions that lead to B-PPEs with a relatively higher Li + transference number and interfacial compatibility.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Borate-Based Porous Polymer Electrolytes Containing Cyclic Carbonate for High-Performance Lithium Metal Batteries

Zhou

Lai

et al. 2021

ACS Appl. Energy Mater.

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A series of borate-based porous polymer electrolytes (B-PPEs) is prepared by incorporating the copolymers containing cyclic boroxine and cyclic carbonate groups into poly(vinylidene fluoride) (PVDF) through the phase inversion method. The dense and well-interconnected pores are obtained in the polymer matrix when the content of the copolymer reached 40 wt %. The ethylene–oxygen chain segments in the copolymer can facilitate the mobility of polymer chains and form the uniform distribution of pores in the B-PPEs. The B-PPEs show an enhanced ionic conductivity of 1.32 × 10–3 S cm–1 at 30 °C, which is due to the uniform well-interconnected pores in the polymer host. The cyclic carbonate units interact with the liquid electrolyte, which could improve the electrolyte uptake capacity of the polymer matrix. Benefited from the Lewis acid–base interactions between boron moieties and the anions of the lithium salt, the lithium-ion transference number of B-PPEs is also significantly improved. Compared to the pure PVDF-based electrolyte, the Li/B-PPEs/Li cell displays a very stable polarization voltage and the long-time cycling for 1000 h at a current density of 0.2 mA cm–2. Moreover, the Li/B-PPEs/LiFePO4 cells deliver a higher capacity of 143.0 mAh g–1 at 0.2 C and 86% capacity retention after 150 cycles. The B-PPEs could be a promising candidate for enhancing the safety and electrochemical properties of lithium metal batteries.

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“… Summary of the principal strategies to improve ionic conductivities of polymers in SPEs and GPEs [ 68 ]. …”

Section: Figurementioning

confidence: 99%

Designing Versatile Polymers for Lithium-Ion Battery Applications: A Review

et al. 2022

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Solid-state electrolytes are a promising family of materials for the next generation of high-energy rechargeable lithium batteries. Polymer electrolytes (PEs) have been widely investigated due to their main advantages, which include easy processability, high safety, good mechanical flexibility, and low weight. This review presents recent scientific advances in the design of versatile polymer-based electrolytes and composite electrolytes, underlining the current limitations and remaining challenges while highlighting their technical accomplishments. The recent advances in PEs as a promising application in structural batteries are also emphasized.

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Composite polymer electrolytes reinforced by hollow silica nanotubes for lithium metal batteries

Cited by 40 publications

References 89 publications

Single-Ion Conducting Polymeric Protective Interlayer for Stable Solid Lithium-Metal Batteries

Single-Ion Conducting Polymeric Protective Interlayer for Stable Solid Lithium-Metal Batteries

Fabrication of Borate-Based Porous Polymer Electrolytes Containing Cyclic Carbonate for High-Performance Lithium Metal Batteries

Designing Versatile Polymers for Lithium-Ion Battery Applications: A Review

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