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。     

安全固态锂电池室温聚合物基电解质的研究进展

目前,大多数聚合物固态电解质在室温下离子电导率较低,约为10^–8 ~10^-6 S /cm,且对温度存在着较大的依赖性,仍无法满足高性能室温固态锂电池的实际应用需要。基于此,本文先介绍了室温聚合物电解质在锂离子电池中应用的主要研究进展及其优缺点。然后,从物理调控、化学调控等多角度重点阐述了室温聚合物电解质（包括全固态聚合物电解质、准固态聚合物电解质）的制备工艺、优化与改性方法、作用机理等在电池中应用的主要研究进展和现状。最后,对锂离子电池用室温聚合物电解质存在的挑战和未来可能发展趋势进行了展望。     

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.     

聚合物电解质组成与结构特征的研究进展

聚合物电解质在锂离子电池方面具有广泛的应用前景。聚合物电解质的离子电导率是决定其应用的重要因素，离子电导率与聚合物电解质的组成和结构有着重要的关系。本文结合近几年的相关文献，综述了锂离子电池用的聚合物电解质的组成与结构特征的研究进展，说明了今后的研究方向。     

锂离子电池PVDF基凝胶电解质隔膜的研究进展

综述了近年来聚合物锂离子电池PVDF基凝胶电解质隔膜的研究进展,详细介绍了凝胶聚合物电解质隔膜的结构性能、在聚合物锂离子电池中的作用以及PVDF基电解质隔膜的制备方法和改性技术,并指出了聚合物锂离子电池隔膜的发展趋势和研究方向。     

聚合物及离子液体电解质在锂二次电池中的应用

系统地介绍了锂离子二次电池电解质,特别是聚合物电解质及离子液体电解质的应用研究现状。开发具有高能量密度、稳定的充放电性能、循环寿命长、可塑性、高安全性与低成本的锂离子电池是当前的研究热点。离子液体具有较高的离子电导率、宽电化窗口,且无蒸汽压,而聚合物具有良好的机械加工性能。二者的结合将为锂离子电池电解质的研究提供了新的开发思路。     

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。     

全固态聚合物电解质的性能研究

聚合物电解质由于本身的优点,已成为锂离子电池研究的一个热点.聚合物电解质由聚合物、锂盐及添加剂组成,本文综述了聚合物电解质研究的新体系,论述了聚合物电解质中各组分对其性能的影响.     

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。     

凝胶型聚合物锂离子电池现场聚合工艺研究进展

凝胶型聚合物锂离子电池的现场聚合工艺已经成为聚合物锂离子电池领域的一个研究热点。主要介绍了室温现场聚合、热引发现场聚合、辐射引发现场聚合及电化学引发现场聚合等几种聚合物锂离子电池的现场聚合工艺,并对这几种现场聚合工艺的工艺过程、聚合物体系、聚合反应原理、所制聚合物电解质及电池性能方面进行了总结和评述,比较了各种工艺的优缺点,并对聚合物锂离子电池现场聚合工艺的发展前景进行了预测。     

碱性聚合物电解质的应用进展及其改性研究

碱性聚合物电解质具有较高的室温电导率、易于合成、成本较低等特点,在碱性二次锌电池、MH/Ni电池、Cd/Ni电池、燃料电池、超级电容器等方面具有潜在的应用价值。介绍了碱性聚合物电解质的结构与分类、应用研究现状及其改性方法,并对今后的发展方向提出了展望。     

纳米复合在光聚合高分子固体电解质中的应用研究

将纳米级陶瓷粉末分散到含有高分子基体预聚物、高氯酸锂及光引发剂的光敏物质中 ,并通过紫外光辐射使其交联固化为导电薄膜锂聚合物电池用电解质材料 ,并对其成膜性、感光性能以及导电性能进行了研究 ;本文还介绍了近年来纳米复合材料在锂聚合物电池中的应用进展情况     

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。     

Polymer electrolyte lithium batteries rechargeability and positive electrode degradation: An AC impedance study

AC impedance measurements of polymer electrolyte-based, symmetrical composite cathode cells were used to probe the effects of the composite cathode composition and fabrication process upon its performance when used in polymer electrolyte-based thin film rechargeable lithium batteries. The relationship between cycling performance and AC impedance measurements were used to elucidate some of the reported failure mechanisms of rechargeable lithium polymer electrolyte batteries. The rapid initial capacity decay observed within the first few cycles of the polymer electrolyte/V₆O₁₃ based composite cathode is shown to be related to the properties of the composite cathode active material, while the slower capacity decay observed during subsequent cycles, under continuous cycling regimes, appears to be related to a loss of ionic and electronic contact in the composite cathode.     

Lithium polymer batteries using the highly porous membrane filled with solvent-free polymer electrolyte

Solid polymer electrolyte supported by a microporous membrane was prepared and characterized. The polymer electrolyte was prepared by penetrating the highly conductive solvent-free polymer electrolyte based on poly(oligo [oxyethylene] oxyterephthaloyl) into the pores of the highly porous membrane. The electrochemical characteristics of the solid polymer electrolytes are presented, and we discuss the possibility of them as an electrolyte material for lithium polymer batteries.     

锂离子电池用固态电解质的研究现状与展望

目前商业化的锂离子电池多使用有机液态电解质,存在易燃易爆、易泄露等安全风险,而采用固态电解质替代有机液态电解质可以有效提高电池安全性。锂离子电池用固态电解质又可分为无机固态电解质和有机——即聚合物固态电解质。无机固态电解质对高温或其他腐蚀性环境适应性好,适用于在极端工作环境中刚性电池等领域;聚合物固态电解质在柔韧性和可加工性上则优势明显,适用于柔性电池等领域,但这些材料均尚有问题待解决。无机-有机复合的方式,有望综合两种材料的优势,取长补短,提高固态电解质的综合性能和实用价值。     

Polymer gel electrolytes containing sulfur-based ionic liquids in lithium battery applications at room temperature

Polymer gel electrolytes comprising a sulfur-based ionic liquid (IL), a lithium salt, and butyrolactone (GBL) as an additive hosted in PVdF-HFP matrix were prepared and characterized. The result shows that adding small amount of GBL to the polymer electrolytes can improve the cathodic stability of the electrolytes, which ensures the lithium plating/stripping in the redox process. Furthermore, cyclic voltammograms studies indicate that the polymer electrolytes have well reversible redox process. When the IL component reaches 75 wt%, the polymer electrolyte has higher ionic conductivity than the other samples and it is 6.32 × 10^?4 S cm^?1. The assembled batteries with the polymer electrolyte have better discharge capacity, and after 100 cycles, the discharge capacity of the battery still retains 148 mAh g^?1.     

Composite polymer electrolyte incorporating WO3 nanofillers with enhanced performance for dendrite-free solid-state lithium battery

All solid-state lithium batteries (ASS-LBs) with polymer-based solid electrolytes are a prospective contender for the next-generation batteries because of their high energy density, flexibility, and safety. Among all-polymer electrolytes, PEO-based solid polymer electrolytes received huge consideration as they can dissolve various Li salts. However, the development of an ideal PEO-based solid polymer electrolyte is hindered by its insufficient tensile strength and lower ionic conductivity due to its semi-crystalline and soft chain structure. In order to lower the crystallization and improve the performance of PEO-based solid polymer electrolyte, tungsten trioxide (WO₃) nanofillers were introduced into PEO matrix. Herein, a PEO₂₀/LiTFSI/x-WO₃ (PELI-xW) (x = 0%, 2.5%, 5%, 10%) solid composite polymer electrolyte was prepared by the tape casting method. The solid composite polymer electrolyte containing 5 wt% WO₃ nanofillers achieved the highest ionic conductivity of 7.4 × 10^-4 S cm^-1 at 60 °C. It also confirms a higher Li-ion transference number of 0.42, good electrochemical stability of 4.3V, and higher tensile strength than a PEO/LiTFSI (PELI-0W) fillers-free electrolyte. Meanwhile, the LiFePO₄│PELI-xW│Li ASS-LBs demonstrated high performance and cyclability. Based on these findings, it can be considered a feasible strategy for the construction of efficient and flexible PEO-based solid polymer electrolytes for next-generation solid-state batteries.     

History of Solid Polymer Electrolyte‐Based Solid‐State Lithium Metal Batteries: A Personal Account

Solid‐state lithium metal batteries (SSLMBs) are believed to be important pathway to overcome the limitations that state‐of‐the‐art lithium‐ion batteries face in terms of safety and energy density. In addition to transporting ionic species in solid‐state configuration, solid polymer electrolytes (SPEs) are structurally designable and processable, and have been deemed as an auspicious kind of solid electrolyte to access highly‐performant SSLMBs. In this essay, we provide a historical overview on the development of SPE‐based SSLMBs, aiming to highlight the main achievements being made at both material and cell levels. It is hoped that the personal reflection and retrospect presented in this essay give an impetus to inspire the discovery of tantalizing battery materials and improve the overall performance of SPE‐based SSLMBs and other emerging battery technologies.