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Wu S, Wang C, Li S, Lin L, Tong Q, Zhu M, Weng J. Coconstruction of Supramolecular Lithium-Conducting Cross-Linked Networks Based on PVDF and Triblock Polymer Nanomicrosphere Solid-State Polymer Electrolytes for Lithium-Metal Batteries. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28482-28492. [PMID: 38771938 DOI: 10.1021/acsami.4c03355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Uneven lithium plating and low ionic conductivity currently impede the realization of high-capacity rechargeable lithium metal batteries. And the conventional poly(ethylene oxide) (PEO) solid-state electrolytes are unsuitable for high-energy-density Li anode applications due to their low lithium-ion transference number and high reactivity with Li metal, leading to detrimental dendrite formation and potentially hazardous exothermic reactions with the electrolyte. In this study, we employ a supramolecular approach to develop a novel polymer solid-state electrolyte based on poly(vinylidene fluoride) (PVDF) and a novel triblock polymer nanomicrosphere, (poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone), (PCL-PEG-PCL). The abundance of carbonyl and ether-oxygen functional groups in PCL-PEG-PCL enhances the lithium coordination environment within the polymer solid-state electrolyte. Additionally, the original C-F moieties of PVDF form hydrogen bonds with C-H and terminal hydroxyl groups in PCL-PEG-PCL, collectively creating a multichannel fast Li+-conducting supramolecular cross-linked network. The resulting electrolyte demonstrates a high ionic conductivity of 1.4 × 10-3 S cm-1 and an extended electrochemical window of 5.2 V. Moreover, the electrolyte exhibits a high lithium-ion transference number (tLi+ = 0.63) at room temperature and exhibits excellent interfacial compatibility with the lithium metal anode. For the resulting electrolyte utilized in LiFePO4 batteries, the capacity retention of the cells assembled with this electrolyte exceeds 91.3% after 1000 cycles at 25 °C and 2 C (0.281 mA cm-2).
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Affiliation(s)
- Shuru Wu
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Chengyu Wang
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Shuanghui Li
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Liming Lin
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350007, China
| | - Qingsong Tong
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Mengqi Zhu
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
| | - Jingzheng Weng
- Fujian University High-Efficiency Battery Engineering Research Center, Fujian Key-Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, China
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Fractionated Crystallization Kinetics and Polymorphic Homocrystalline Structure of Poly(L-lactic acid)/Poly(D-lactic acid) Blends: Effect of Blend Ratio. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2658-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Anisotropic nanoparticles as templates for the crystalline structure of an injection-molded isotactic polypropylene/TiO 2 nanocomposite. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chen Y, Gan T, Ma C, Wang L, Zhang G. Crystallization of Polymer Chains Chemically Attached on a Surface: Lamellar Orientation from Flat-on to Edge-on. J Phys Chem B 2016; 120:4715-22. [DOI: 10.1021/acs.jpcb.6b02344] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yihuang Chen
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Tiansheng Gan
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chunfeng Ma
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Linge Wang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Guangzhao Zhang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
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Chen XZ, Chen X, Guo X, Cui YS, Shen QD, Ge HX. Ordered arrays of a defect-modified ferroelectric polymer for non-volatile memory with minimized energy consumption. NANOSCALE 2014; 6:13945-13951. [PMID: 25316324 DOI: 10.1039/c4nr03866e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ferroelectric polymers are among the most promising materials for flexible electronic devices. Highly ordered arrays of the defect-modified ferroelectric polymer P(VDF-TrFE-CFE) (poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)) are fabricated by nanoimprint lithography for nonvolatile memory application. The defective CFE units reduce the coercive field to one-fifth of that of the un-modified P(VDF-TrFE), which can help minimize the energy consumption and extend the lifespan of the device. The nanoimprint process leads to preferable orientation of polymer chains and delicately controlled distribution of the defects, and thus a bi-stable polarization that makes the memory nonvolatile, as revealed by the pulsed polarization experiment.
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Affiliation(s)
- Xiang-Zhong Chen
- Department of Polymer Science & Engineering and Key Laboratory of High Performance Polymer Materials & Technology of MOE, School of Chemistry & Chemical Engineering, Nanjing University, Nanjing, 210093, China.
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Zhang P, Huang HY, Chen Y, Yu S, Krywka C, Vayalil SK, Roth SV, He TB. Preparation of long-range ordered nanostructures in semicrystalline diblock copolymer thin films using micromolding. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1506-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wu H, Huang X. Structural evolution of low-molecular-weight poly(ethylene oxide)-block-polystyrene diblock copolymer thin film. ScientificWorldJournal 2013; 2013:539457. [PMID: 24302862 PMCID: PMC3835911 DOI: 10.1155/2013/539457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Accepted: 09/23/2013] [Indexed: 11/20/2022] Open
Abstract
The structural evolution of low-molecular-weight poly(ethylene oxide)-block-polystyrene (PEO-b-PS) diblock copolymer thin film with various initial film thicknesses on silicon substrate under thermal annealing was investigated by atomic force microscopy, optical microscopy, and contact angle measurement. At film thickness below half of the interlamellar spacing of the diblock copolymer (6.2 nm), the entire silicon is covered by a polymer brush with PEO blocks anchored on the Si substrate due to the substrate-induced effect. When the film is thicker than 6.2 nm, a dense polymer brush which is equal to half of an interlamellar layer was formed on the silicon, while the excess material dewet this layer to form droplets. The droplet surface was rich with PS block and the PEO block crystallized inside the bigger droplet to form spherulite.
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Affiliation(s)
- Hui Wu
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaohua Huang
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials of Ministry of Education, Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, and School of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
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