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Poly(m-phenylene isophthalamide)-reinforced polyethylene oxide composite electrolyte with high mechanical strength and thermostability for all-solid-state lithium metal batteries

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Rare Metals 2022年第11期41卷 3762-3773页

作者： Ya-Ning Liu Zhen Xiao Wen-Kui Zhang Jun Zhang Hui Huang Yong-Ping Gan Xin-Ping He G.Gnana Kumar Yang Xia College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou310014China Institute of Optoelectronic Materials and Devices China Jiliang UniversityHangzhou310018China Department of Physical Chemistry School of ChemistryMadurai Kamaraj UniversityMadurai625021India

polyethylene oxide(PEO)-based solid polymer electrolytes(SPEs)with flexibility,easy processability,low cost and especially strong ability to dissolve lithium salts have been regarded as promising alternatives to traditional flammable liquid electrolytes in next-generation highsafety and high-energy-density lithium metal ***,the inferior mechanical strength and thermostability of PEO-based SPEs will raise the lithium dendritic penetration issue,further leading to the short circuit in *** this work,aiming at enhancing the interfacial stability against Li dendrites of PEO-based SPEs,poly(mphenylene isophthalamide)(PMIA)is introduced as a reinforcing phase for the rational design of PEO/PMIA composite ***,PMIA chain with meta-type benzene-amide linkages significantly improves the mechanical strength(1.60 MPa),thermal stability(260℃)and ability to inhibit the growth of lithium dendrites(>300 h at 0.1 mA·cm^(-2))of ***,allsolid-state LiFePO_(4)‖PEO/PMlA‖Li cell demonstrates superior electrochemical performance in terms of high specific capacity(159.1 mAh·g^(-1)),remarkable capacity retention(82.2%after 200 cycles at 0.5 C)and excellent safety *** burning or explosion occurs under pressing,bending and cutting *** work opens a new door in developing high-performance PEObased electrolytes for advanced all-solid-state lithium metal batteries.

关键词： Poly(m-phenylene isophthalamide) polyethylene oxide Solid electrolyte Mechanical strength Thermal stability All-solid-state lithium metal battery

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Ionic conductivity study on electron beam irradiated polyacrylonitrile-polyethylene oxide gel

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Chinese Physics B 2011年第7期20卷 466-471页

作者：马艺准庞立龙朱亚滨王志光申铁龙 Institute of Modern Physics Graduate University of Chinese Academy of Sciences

Different mass percent polyacrylonitrile （PAN）-polyethylene oxide （PEO） gels were prepared and irradiated by an electron beam （EB） with energy of 1.0 MeV to the dose ranging from 13 kGy to 260 kGy. The gels were analysed by using Fourier transform infrared spectrum, gel fraction and ionic conductivity （IC） measurement. The results show that the gel is crosslinked by EB irradiation, the crosslinking degree rises with the increasing EB irradiation dose （ID） and the mass percents of both PAN and PEO contribute a lot to the crosslinking; in addition, EB irradiation can promote the IC of PAN-PEO gels. There exists an optimum irradiation dose, at which the IC can increase dramatically. The IC changes of the PAN-PEO gels along with ID are divided into three regions： IC rapidly increasing region, IC decreasing region and IC balanced region. The cause of the change can be ascribed to two aspects, gel capturing electron degree and crosslinking degree. By comparing the IC-ID curves of different mass percents of PAN and PEO in gel, we found that PAN plays a more important role for gel IC promotion than PEO, since addition of PAN in gel causes the IC-ID curve sharper, while addition of PEO in gel causes the curve milder.

关键词： polyacrylonitrile polyethylene oxide electron beam irradiation ionic conductivity

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Incorporating multifunctional LiAlSiO_(4) into polyethylene oxide for high-performance solid-state lithium batteries

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Journal of Energy Chemistry 2021年第2期30卷 116-123,I0005页

作者： Yuqi Wu Xinhai Li Guochun Yan Zhixing Wang Huajun Guo Yong Ke Lijue Wu Haikuo Fu Jiexi Wang School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083HunanChina Guangdong Jiana Energy Technology Co. Ltd.Qingyuan 513056GuangdongChina

High ionic conductivity,good electrochemical stability,and satisfactory mechanical property are the crucial factors for polymer solid state ***,fast ion conductor LiAlSiO_4(LASO) is incorporated into polyethylene oxide(PEO)-based solid-state electrolytes(SSEs).The SSEs containing LASO exhibit enhanced mechanical properties performance compared to pristine PEO-LiTFSI electrolyte.A reduced melting transition temperature of 40.57℃ is enabled by introducing LASO in to PEO-based SSE,which is beneficial to the motion of PEO chain and makes it possible for working at a moderate *** with the enhanced motion of PEO,dissociation of the lithium salt,and conducting channel of LASO,the optimized composite polymer SSE exhibits a high ionic conductivity of 4.68×10^(-4),3.16×10^(-4) and 1.62×10^(-4) S cm^(-1) at 60,50 and 40℃,*** corresponding LiFePO_4//Li solid-state battery exhibits high specific capacities of 166,160 and 139 mAh g^(-1) at 0.2 C under 60,40 and 25℃.In addition,it remains 130 mAh g^(-1) at 4.0 C,and maintains 91.74% after 500 cycles at 1.0 C under 60℃.This study provides a simple approach for developing ionic conductor-filled polymer electrolytes in solid-state lithium battery application.

关键词： LiAlSiO_(4) polyethylene oxide Solid state battery Composite polymer electrolyte Ionic conductivity

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Preparation of polyethylene oxide with 4-amino-N-(2-pyrimidinyl) benzene sulfonamide and diethylenetriaminepentaacetic acid end groups and its enrichment in tumour tissues

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Science China Chemistry 1998年第1期41卷 54-59页

作者：黄骏廉陈胜谈立松王海原 1. Department of Macromolecular Science Fudan University 200433 Shanghai China 2. Shanghai First Lung Hospital 200433 Shanghai China

Using polyethylene oxide (PEO) with 4 amino N (2 pyrimidinyl) benzene sulfonamide (APBS) and hydroxyl end groups (PEO a h ) as parent compounds, PEO with diethylenetriaminepentaacetic acid (DTPA) and APBS end groups (PEO a d ) was prepared by functionization of PEO a h . After complexation of PEO a d with isotopes of 153 Sm and 99 Tc, and injecting the polymer drug into the Kunming white mouse transplanted with Sarcoma 180, it was confirmed by γ counter that the PEO a d could be concentrated selectively in the tumour tissues, the ratio of concentration of the polymer drug in tumour tissue to that in ordinary organs such as liver, heart, spleen, muscle, blood and bone marrow is about 2.3:1 or even 10:1.

关键词： polyethylene oxide 4-amino-N-(2-pyrimidinyl) benzene sulfonamide diethylenetriaminepentaacetic acid anti-turnour drug directing function

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The Structure and Properties of polyethylene oxide Reinforced Poly(Metaphenylene Isophthalamide)Fibers

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Advanced Fiber Materials 2022年第3期4卷 436-447页

作者： Qingquan Song Wenwen Wu Yi Wang Junrong Yu Zuming Hu Yan Wang State Key Laboratory for Modifcation of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China

In this paper,the efect of poly(ethylene oxide)(PEO)as an additive on the structure and properties of poly(m-phenylene dimethylene terephthalamide)(PMIA)fbers obtained by wet spinning was *** tensile strength of the composite fbers was substantially enhanced compared to the pure PMIA *** was due to the fact that the addition of PEO weakens the hydrogen bonding between PMIA molecular chains resulting in an improved orientation of the composite *** was found that the optimum PEO addition was 2%and the tensile strength of the composite fber was 4.74 cN/dtex,which was 76%higher compared to the pure PMIA ***,the heat resistance and fame retardancy of the composite fbers were basically unchanged compared to the pure PMIA *** modifcation method is simple,with low raw material cost and good stability,and has not only good academic value but also excellent industrial value.

关键词： Poly(metaphenylene isophthalamide) polyethylene oxide Mechanical properties Hydrogen bonding

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Synthesis and Surface Tension Properties of polyethyleneimine-polyethylene oxide Block Copolymers

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Chinese Journal of Chemistry 2003年第4期21卷 460-465页

作者：张剑 LONNIE Bryant Research Institute of Daily Chemical Industry State Key Laboratory of C1 Chemistry and Technology Taiyuan University of TechnologyTaiyuan Shanxi 030021 China Corporate Innovation Asia Kobe Technical Center

This paper describes the synthesis, surface tension and dispersancy properties of block copolymer nonionic surfactants comprised of polyethyleneimine (PEI) and polyethylene oxide (PEO) blocks of selected lengths. These block copolymers were prepared by a three step synthetic sequence. Firstly, PEO glycol was converted to its dimethanesulphonylester (dimesyl) derivative by reacting with methanesulphonyl chloride. Then a tri block polymer was prepared by the ring opening polymerization of 2 methyl 2 oxazoline (MeOZO) with the dimesyl PEO derivative. Lastly, linear PEI blocks were obtained by subsequent hydrolysis and purification. 1H NMR spectra confirmed the structures of the intermediate, final products and their purities (>99%). The utility of these block copolymers is described in terms of their surface tension and clay dispersancy measurements as a function of copolymer chain and block length.

关键词： block copolymer polyethylene oxide poly^ethyle^nei^mine surface tension clay dispersancy

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Direct ink writing of polycaprolactone/polyethylene oxide based 3D constructs

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Progress in Natural Science:Materials International 2021年第2期31卷 180-191页

作者： Bin Zhang Se Hun Chung Susan Barker Duncan Craig Roger J.Narayan Jie Huang Department of Mechanical Engineering University College London Medway School of Pharmacy Universities of Greenwich and Kent School of Pharmacy University College London Joint Department of Biomedical Engineering University of North Carolina and North Carolina State University

There has been increasing interest over recent years in the application of three-dimensional(3 D) printing technologies in the biomedical field. One such method is Direct Ink Writing(DIW); this approach has the potential advantage of allowing room-temperature deposition of materials, presented as an ink, to build complex architectures. DIW offers the ability to process biomaterials containing temperature-sensitive components. Due to the fabrication principles of DIW, there are specific rheological requirements that the ink must exhibit for the 3 D construction. For this reason, hydrogel-based liquid feed stocks have been the focal point of ink development. As a consequence, studies based on inks comprising hydrophobic biomaterials, which are insoluble in water and hence unsuited to the hydrogel approach, have been *** this study, we investigate novel inks that utilize polycaprolactone(PCL), a hydrophobic polymer, as the primary constituent by dissolving the polymer in solvent systems based on dichloromethane(DCM) and acetone(ACE). Moreover, polyethylene oxide(PEO) was incorporated into the PCL systems in order to extend the range of hydrophilicity of the systems. The rheological properties of the inks were investigated as a function of polymer composition and solvent system. Woodpile constructs of PCL and PCL/PEO were fabricated using DIW method and were assessed by a series of material characterisation. The type of solvent system had a noticeable impact on the ink rheology, which ultimately affected the surface properties. The incorporation of PEO particularly enhanced the roughness and wettability of the constructs. Our results support the use of DIW as a new means to process hydrophobic polymers for biomedical applications.

关键词： Direct ink writing Polycaprolactone polyethylene oxide Ink rheology Material characterisation 3D construct

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Solid-state Al-air battery with an ethanol gel electrolyte

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Green Energy & Environment 2023年第4期8卷 1117-1127页

作者： Yifei Wang Wending Pan Kee Wah Leong Shijing Luo Xiaolong Zhao Dennis Y.C.Leung School of Mechanical Engineering and Automation Harbin Institute of TechnologyShenzhenChina Department of Mechanical Engineering The University of Hong KongHong KongChina

Hydrogel electrolyte is especially suitable for solid-state Al-air batteries targeted for various portable applications, which may, however, lead to continuous Al corrosion during battery standby. To tackle this issue, an ethanol gel electrolyte is developed for Al-air battery for the first time in this work, by using KOH as solute and polyethylene oxide as gelling agent. The ethanol gel is found to effectively inhibit Al corrosion compared with the water gel counterpart, leading to stable Al storage. When assembled into an Al-air battery, the ethanol gel electrolyte achieves a much improved discharge lifetime and specific capacity, which are 5.3 and 4.1 times of the water gel electrolyte at 0.1 mA cm^(-2), *** studying the gel properties, it is found that a lower ethanol purity can improve the battery power output, but at the price of decreased discharge efficiency. On the contrary, a higher polymer concentration will decrease the power output, but can bring extra benefit to the discharge efficiency. As for the gel thickness, a moderate value of 1 mm is preferred to balance the power output and energy efficiency. Finally, to cater the increasing market of flexible electronics, a flexible Al-air battery is developed by impregnating the ethanol gel into a paper substrate, which can function normally even under serious deformation or damage.

关键词： Al-air battery Gel electrolyte Ethanol gel Al corrosion polyethylene oxide

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DILECTRIC AND THERMAL PROPERTIES OF PEO DOPED WITH CADIMIUM CHLORIDE SALT

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Chinese Journal of Polymer Science 2012年第2期30卷 143-151页

作者： Jibril Al-Hawarin Ayman S.Ayesh Rami A.Abdel-Rahem Chemistry Department College of ScienceAl Hussein Bin Talal UniversityMaanJordan Physics Department College of ScienceKing Faisal UniversityAl-AhssaKingdom of Saudi Arabia Chemistry Department College of ScienceKing Faisal UniversityAl-AhssaKingdom of Saudi Arabia

The main aim of this research is to investigate the effect of salt concentration on the dielectric properties （AC （CrAC）, permittivity （d）, dielectric loss （d＇）, and dielectric relaxation process） and melting behavior of polyethylene oxide （PEO）/CdC12 complexes. The dielectric study was carried out over a frequency range 10-335 kHz and a temperature range 25--45~C. The AC conductivity, permittivity and dielectric loss of the PEO/CdC12 complexes increase with increasing salt concentration and temperature. Also, it was found that the addition of CdC12 salt to PEO host reduced the melting temperature of PEO host. Dielectric results reveal that the relaxation process of these complexes is due to viscoelastic relaxation or non-Debye relaxation at room temperature. Additionally, it was found that relaxation behavior remained viscoelastic at different temperatures and salt concentrations.

关键词： polyethylene oxide CdC12 salt Dielectric properties Dielectric relaxation Relaxation process Thermalproperties.

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An asymmetric bilayer polymer-ceramic solid electrolyte for highperformance sodium metal batteries

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Journal of Energy Chemistry 2022年第11期31卷 18-25,I0003页

作者： Han Wang Yongjiang Sun Qing Liu Zhiyuan Mei Li Yang Lingyan Duan Hong Guo School of Materials and Energy Yunnan UniversityKunming 650091YunnanChina

Manufacturing an excellent solid electrolyte compatible with a high-voltage cathode is viewed as a critical tactic for improving the energy density of solid-state sodium-ion batteries(SSIBs).A novel asymmetric bilayer solid electrolyte of the PEO-SN-NaClO_(4)|NZSP-NSO with an anti-reduction PEO-SN-NaClO_(4)layer close to the Na side is constructed by solution *** ionic conductivity is enhanced by using succinonitrile(SN)in polyethylene oxide(PEO)polymer *** anti-oxidation layer of Na_(3)Zr_(2)Si_(2)PO_(12)with Na_(2)SiO_(3)(NZSP-NSO)is served as the support of the membrane on the cathode,which could improve the interface compatibility and electrochemical performance of *** asymmetric bilayer solid electrolyte simultaneously features a wide electrochemical stability window(4.65 V ***+/Na)and a high conductivity(2.68×10^(-4) S cm^(-1)).Furthermore,the solid electrolyte demonstrates stable Na plating/stripping over 700 h and remarkably improves cycling stability in Na/Na_(3) V_(2)(PO_(4))_(3) batteries with an ultra-high capacity retention of 99.6%after 100 cycles at 50℃and 0.5 *** study provides an effective strategy for designing asymmetric high sodium ion conductivity solid-state electrolytes for high-performance SSIBs.

关键词： Solid sodium batteries Bilayer electrolytes NASICON polyethylene oxide

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