聚合物电解质的研究进展

介绍了锂离子电池的特点、市场前景及聚合物锂离子电池的种类,综述了聚合物电解质的发展历程,重点阐述了近来研究较多的几种聚合物电解质的研究进展,包括:聚偏氟乙烯基(PVDF基)、聚丙烯腈基(PAN基)、聚甲基丙烯酸甲酯基(PMMA基)和聚乙烯类(PE)聚合物电解质。     

锂离子电池隔膜的成型工艺新进展

电池隔膜在锂离子电池组件中起着桥连作用,综述了近年来以微孔聚烯烃、无纺布、有机/无机复合材料以及凝胶聚合物电解质为膜材料的锂离子电池隔膜研究现状,根据隔膜制备的原理和特点,对最为常见的干法、湿法、静电纺丝法制备膜材料做出了具体的概括,并列举了最新的湿法抄造、熔喷纺丝和相转化制备工艺,展望了开发锂离子电池隔膜新材料和新工艺的发展方向。     

P（VDF—HFP）基凝胶聚合物电解质的研究进展

概述影响凝胶聚合物电解质性能的的因素;重点介绍P(VDF-HFP)多孔凝胶聚合物电解质作为锂离子电池聚合物电解质的研究进展,包括该类聚合物电解质的的制备方法及其离子电导率;展望了凝胶聚合物电解质在锂离子电池中的应用前景.     

锂离子电池中聚合物电解质的研究进展

聚合物电解质在锂离子电池中具有隔膜和电解质的功能,与传统的隔膜和电解质体系相比,改变了对电解液亲和性差,避免了液态电解液泄漏爆炸等安全问题,同时也简化了电池装备,便于电池外形设计。本文介绍了聚合物电解质的初期发展及性能要求,综述了聚合物电解质组成、各组分作用及改性研究,概述了聚合物电解质出现的问题及未来研究重点。     

锂离子电池凝胶聚合物电解质

对锂离子凝胶聚合物电解质的结构特征、导电机理、制备方法进行了总结和评述,对锂离子聚合物电解质及锂离子电池的发展进行了预测。     

索尔维推出全新Solef~ PVDF电池隔膜涂层

<正>索尔维特种聚合物事业部推出Solef PVDF(聚偏氟乙烯)电池隔膜涂层,用于生产高能量、安全、环保的电动汽车锂离子电池。全新的Solef PVDF在陶瓷涂层颗粒内展现出卓越的内聚力,并能安全黏结陶瓷颗粒和隔膜基板。这对生产高效、持久的高能电池至关重要。此外,它还具有良好的电极层压性能,有助于隔膜的内部电阻最小化,并展现出优异的孔隙形成能力,适用于锂离子电池中具有高离子导电率的隔膜,因     

锂离子电池用凝胶聚合电解质基体改性的研究进展

介绍了目前用于锂离子电池的凝胶聚合物电解质体系,重点介绍了凝胶聚合物电解质在离子电导率等方面的改性进展。     

锂离子电池聚合物电解质的研究进展

对固体聚合物电解质和凝胶聚合物电解质的发展、组成、性能及其在聚合物锂离子电池中的应用等方面进行了总结和评述,比较了其优缺点和应用范围,对聚合物电解质及聚合物锂离子蓄电池的发展前景进行了预测。     

耐热型聚合物锂离子电池隔膜的研究进展

综述了隔膜的性能要求以及国内外耐热型聚合物锂离子电池隔膜的发展现状,主要包括以聚醚醚酮（PEEK）、聚对苯二甲酸乙二醇酯（PET）、聚偏氟乙烯（PVDF）、聚酰亚胺（PI）等聚合物隔膜,针对各种聚合物隔膜的特点与制备方法及其性能进行了介绍,并对聚合物隔膜的发展方向进行了展望。     

凝胶聚合物电解质的电化学性能

用化学交联法制备了凝胶聚合物电解质.聚烯烃多孔膜支撑的凝胶聚合物电解质具有优良的电化学性能, 室温电导率为1.01×10^-3S&#8226;cm^-1,锂离子迁移数为0.41,在Al电极上的氧化起始电位达到4.2 V以上.采用聚烯烃多孔膜支撑的凝胶聚合物电解质制备了聚合物锂离子电池,并研究了工艺条件对聚合物锂离子电池电化学性能的影响.研究的工艺条件包括：单体添加量和电极组合方式.优化后的聚合物锂离子电池具有良好的电化学性能,1 C放电容量为0.2 C放电容量的93.2%,经100次1 C循环后的剩余容量仍在80%以上.     

增塑型锂离子电池聚合物电解质

从组成聚合物电解质的聚合物基材和电解液两方面进行分析,介绍了最近几年凝胶型、微孔型和复合型聚合物电解质的研究现状,比较了它们的制备方法、性能和特点,探讨了锂盐、增塑剂、离子液体和单离子导体等对聚合物电解质性能的影响,并简要评述了聚合物锂离子电池未来发展的前景趋势。     

锂离子电池隔膜研究与发展现状

介绍了锂离子电池隔膜的特性和类型。重点介绍了国内外聚烯烃隔膜的发展现状,通过专利和文献的检索了解到以聚烯烃为原料生产锂离子电池隔膜的发展历史和目前国外对锂离子电池隔膜开展研究较活跃的国家,最后介绍了锂离子电池隔膜的生产技术和国内市场情况,并提出了发展建议。     

陶瓷复合锂离子电池隔膜研究进展

相对于传统锂离子电池隔膜,有机-无机陶瓷复合隔膜兼具有机材料的柔韧性、无机材料的耐温性和电解液亲和性。本文对锂离子电池用陶瓷复合隔膜进行综述,首先介绍了此类隔膜相对于传统隔膜的优势,其次对目前研究的陶瓷锂离子电池隔膜的结构形式和主要成膜材料进行了讨论,并介绍了国内外主要公司的陶瓷复合隔膜的研究和发展现状,最后对陶瓷复合隔膜的应用前景和面临的挑战进行了简要分析。鉴于该新型隔膜的优势,随着锂离子电池在高端电子产品以及动力、储能等新兴领域的发展,高安全性陶瓷复合锂离子电池隔膜必将代替传统的聚烯烃隔膜,成为主流隔膜满足人们的需要。     

Li-LiFePO4 rechargeable polymer battery using dual composite polymer electrolytes

A composite polymer electrolyte, formed by dispersing into a poly(ethylene oxide)-lithium salt matrix two additives, i.e. calyx(6)pyrrole, (CP) acting as an anion trapper and superacid zirconia, S-ZrO₂ acting as a conductivity promoter, has been tested as a separator in a new type of rechargeable lithium battery using lithium iron phosphate as the cathode. The choice of the electrolyte was motivated by its favourable transport properties both in terms of lithium ion transference number and of total ionic conductivity. The choice of the cathode was motivated by the value of its operating voltage which falls within the stability window of the electrolyte. The performance of the battery was determined by cycling tests carried out at various rates and at various temperatures. The results demonstrate the good rate capability of the battery which can operate at high charge-discharge efficiency even at 1 C rate and that it can be cycled at 90 °C with a satisfactory initial capacity of the order of 90 mAh g⁻¹. These values outline the practical relevance of the composite electrolyte membrane and of its use as separator in a lithium battery. H. H. Sumathipala—On leave from Department of Physics University of Kelaniya, Kelaniya, Sri Lanka.     

锂电池用PEO基固态聚合物电解质研究进展及应用

介绍了锂电池用聚氧化乙烯(PEO)基固态聚合物电解质的研究进展,论述了国内外在PEO改性、锂盐改进和制备PEO-无机复合聚合物电解质等三方面在提高其电导率、电化学稳定窗口和离子迁移数等性能进行的研究,综述了PEO基聚合物电解质的应用情况.     

Polyethylene battery separator with auto‐shutdown ability,thermal stability of 220°C,and hydrophilic surface via solid‐state ultraviolet irradiation

To assure the safety of the lithium‐ion battery, the separator is required to have good thermal stability. Because the single‐layer polyethylene (PE) separator can only tolerate a temperature of 130°C, it is seldom employed currently by lithium‐ion battery manufacturers although its cost is low. In this article, we modified PE separator chain structure through solid‐state ultraviolet (UV) irradiation method to achieve a separator with composite structure of ～40% crystallized PE and ～70% gel content. Approximately 40% crystallized PE chains fulfill the task of auto‐shutdown at 130°C through melting and filling the pores. At the same time, the PE separator can maintain integrity till 220°C because of its highly cross‐linked chain structure. Besides, the modified PE separator is hydrophilic with a water contact angle of 33° after UV treatment and is able to absorb more electrolyte. However, the tensile strength and elongation at the break decreased because the cross‐linking network increased the rigidity. Nevertheless, these values still meet the requirements as the separator for lithium‐ion battery. Considering the low cost and easy preparation, current cross‐linked PE separator has potential to be used in lithium‐ion batteries for various applications, including electric vehicles and energy storage purpose. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 42169.     

Non-woven fabric supported poly(acrylonitrile-vinyl acetate) gel electrolyte for lithium ion battery use

This paper reported on a new gel polymer electrolyte (GPE) based on polyethylene (PE) non-woven fabric supported poly(acrylonitrile-vinyl acetate) (P(AN-VAc)/PE) membrane for lithium ion battery use. The preparation and performances of the P(AN-VAc)/PE membrane and its GPE based on 1 M LiPF₆ in dimethyl carbonate/diethylene carbonate/ethylene carbonate (1:1:1 in volume) were investigated with a comparison of the unsupported P(AN-VAc) membrane. It is found that the P(AN-VAc)/PE membrane shows better mechanical strength and pore structure for electrolyte uptake than the P(AN-VAc) membrane, and subsequently the GPE based on P(AN-VAc)/PE exhibits higher ionic conductivity and electrochemical stability on cathode than the GPE based on P(AN-VAc). With the support of the non-woven fabric, the ionic conductivity of the GPE at room temperature increases from 1.4 to 3.8 mS cm⁻¹, the oxidation decomposition potential of the GPE on a stainless steel is improved from 5.0 to 5.6 V (vs. Li/Li⁺). The mesocarbon microbeads (MCMB)/LiMn₂O₄ battery using P(AN-VAc)/PE as separator retains 94% of its initial discharge capacity after 100 cycles at C/2 rate, showing that the P(AN-VAc)/PE membrane is a possible alternative to the expensive separator for current liquid lithium ion battery.     

凝胶聚合物电解质在锂硫电池中的应用状况

从凝胶聚合物电解质的制备方法 (原位聚合法和溶液浇铸法)出发,对锂硫电池中凝胶聚合物电解质的应用展开了探究。     

Interface control for high-performance all-solid-state Li thin-film batteries

We fabricated and evaluated four types of Li batteries, in this case a LTO/liquid electrolyte/Li battery, a LTO/LiPON/Li all-solid-state battery, and LTO/LiPON + liquid electrolyte/Li batteries with and without a separator to investigate and clarify the effects of each interface. Through the present research, it was found that a conventional polymer-based separator increases the impedance in the middle frequency region, resulting in an increase in the total cell resistance. After replacing the polymer-based separator with a thin-film solid electrolyte, the cycleability and capacity of the cell were comparable to those of a conventional Li-ion battery with a polymer separator. The all-solid-state Li thin-film battery without a liquid electrolyte exhibits the lowest capacity due to the large interfacial resistance between the Li metal and the LiPON solid electrolyte. However, we found that the insertion of an Al₂O₃ interlayer between the Li and LiPON improves the capacity.