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A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries.
Nanoscale. 2020 Jul 09; 12(26):14279-14289.N

Abstract

All-solid-state polymer electrolytes have received widespread attention due to their superior safety over liquid electrolytes that are prone to leaks. However, poor ionic conductivity and uncontrollable lithium dendrite growth have greatly limited the rapid development of polymer electrolytes. Hence, we report a composite polymer electrolyte combining a polyacrylonitrile (PAN) electrospun fiber membrane, flexible polydimethylsiloxane (PDMS) macromolecules and a polyethylene oxide (PEO) polymer. The introduction of PDMS with a highly flexible molecular chain, ultra-low glass transition energy and high free volume can help optimize lithium ion migration paths and improve the interface compatibility between the electrolyte and the electrode. In addition, the nano-network structure of the PAN nanofiber membrane can promote the interaction between adjacent polymer molecular chains and improve the mechanical properties of the composite electrolyte to suppress the lithium dendrite growth. The synergistic effect of the PDMS and PAN electrospun nanofiber membranes endows the composite electrolyte with superior ionic conductivity and excellent electrochemical stability towards lithium metal. The interface impedance of the Li/Li symmetric battery with the composite electrolyte after 15 days of continuous standing has no significant change compared with the initial state, and the battery can maintain stable cycling for 1200 h without short circuit under a dynamic current of 0.3 mA cm-2. The obtained composite polymer electrolyte has potential application prospects in the field of high-energy lithium metal batteries.

Authors+Show Affiliations

State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China. kangweimin@tjpu.edu.cn dengnanping@tjpu.edu.cn.State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China. kangweimin@tjpu.edu.cn dengnanping@tjpu.edu.cn and School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China.School of International Education, Tiangong University, Tianjin 300387, PR China.State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China. kangweimin@tjpu.edu.cn dengnanping@tjpu.edu.cn and School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China.State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China. kangweimin@tjpu.edu.cn dengnanping@tjpu.edu.cn.State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, PR China. kangweimin@tjpu.edu.cn dengnanping@tjpu.edu.cn and School of Material Science and Engineering, Tiangong University, Tianjin 300387, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32609141

Citation

Gao, Lu, et al. "A 3D Polyacrylonitrile Nanofiber and Flexible Polydimethylsiloxane Macromolecule Combined All-solid-state Composite Electrolyte for Efficient Lithium Metal Batteries." Nanoscale, vol. 12, no. 26, 2020, pp. 14279-14289.
Gao L, Li J, Sarmad B, et al. A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries. Nanoscale. 2020;12(26):14279-14289.
Gao, L., Li, J., Sarmad, B., Cheng, B., Kang, W., & Deng, N. (2020). A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries. Nanoscale, 12(26), 14279-14289. https://doi.org/10.1039/d0nr04244g
Gao L, et al. A 3D Polyacrylonitrile Nanofiber and Flexible Polydimethylsiloxane Macromolecule Combined All-solid-state Composite Electrolyte for Efficient Lithium Metal Batteries. Nanoscale. 2020 Jul 9;12(26):14279-14289. PubMed PMID: 32609141.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A 3D polyacrylonitrile nanofiber and flexible polydimethylsiloxane macromolecule combined all-solid-state composite electrolyte for efficient lithium metal batteries. AU - Gao,Lu, AU - Li,Jianxin, AU - Sarmad,Bushra, AU - Cheng,Bowen, AU - Kang,Weimin, AU - Deng,Nanping, PY - 2020/7/2/pubmed PY - 2020/7/2/medline PY - 2020/7/2/entrez SP - 14279 EP - 14289 JF - Nanoscale JO - Nanoscale VL - 12 IS - 26 N2 - All-solid-state polymer electrolytes have received widespread attention due to their superior safety over liquid electrolytes that are prone to leaks. However, poor ionic conductivity and uncontrollable lithium dendrite growth have greatly limited the rapid development of polymer electrolytes. Hence, we report a composite polymer electrolyte combining a polyacrylonitrile (PAN) electrospun fiber membrane, flexible polydimethylsiloxane (PDMS) macromolecules and a polyethylene oxide (PEO) polymer. The introduction of PDMS with a highly flexible molecular chain, ultra-low glass transition energy and high free volume can help optimize lithium ion migration paths and improve the interface compatibility between the electrolyte and the electrode. In addition, the nano-network structure of the PAN nanofiber membrane can promote the interaction between adjacent polymer molecular chains and improve the mechanical properties of the composite electrolyte to suppress the lithium dendrite growth. The synergistic effect of the PDMS and PAN electrospun nanofiber membranes endows the composite electrolyte with superior ionic conductivity and excellent electrochemical stability towards lithium metal. The interface impedance of the Li/Li symmetric battery with the composite electrolyte after 15 days of continuous standing has no significant change compared with the initial state, and the battery can maintain stable cycling for 1200 h without short circuit under a dynamic current of 0.3 mA cm-2. The obtained composite polymer electrolyte has potential application prospects in the field of high-energy lithium metal batteries. SN - 2040-3372 UR - https://www.unboundmedicine.com/medline/citation/32609141/A_3D_polyacrylonitrile_nanofiber_and_flexible_polydimethylsiloxane_macromolecule_combined_all-solid-state_composite_electrolyte_for_efficient_lithium_metal_batteries L2 - https://doi.org/10.1039/d0nr04244g DB - PRIME DP - Unbound Medicine ER -
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