废弃动力锂离子电池正极材料回收利用标准化动态

介绍了我国废弃动力锂离子电池正极材料回收利用行业现状以及欧盟《新电池法案》关于废弃电池材料回收的要求。根据产业形势、正极材料回收与修复技术现状,对我国动力锂离子电池正极材料回收利用标准化现状进行分析并提出标准需求,重点对目前在编的两项锂离子电池正极材料回收、修复利用的电子行业标准中回收工艺和修复工艺内容进行研究,探讨了下一步亟待标准规范的内容。     

锂离子电池正极材料的研究现状与发展趋势

简单介绍了目前市场应用锂离子电池正极材料的研究热点和最新成果,重点综述了各种锂离子电池正极材料的晶格结构、性能特点及缺陷,并针对各种正极材料的性能特点与成果总结了该材料未来的发展趋势。     

国内电动车用动力锂离子电池现状

锂离子电池具有比能量高、比功率大、使用寿命长(循环性能)、工作范围宽等特点,已经应用于纯电动汽车和混合动力汽车中。总结了国内电动车用动力锂离子电池的标准,以及电池结构、正极材料、负极材料、电解液、隔膜、电池管理系统等方面的研究现状,并对国内电动车用动力锂离子电池产业化现状和面临的技术难题进行了阐述。     

纳米线电池研发成功

斯坦福大学的研究人员开发了采用硅纳米线研制可充电锂电池的方法。材料科学工程助教授Yi Cui带领的研发小组研制的这款新型电池容量是现有电池的10倍，是锂离子电池。锂离子电池储电量取决于其正极锂离子的多少，该电池的正极通常由碳构成。硅比碳的容量大，但也有缺陷。     

锂电池

0619809新型电池技术给予便携系统设计师指望与风险[刊,中]／／电子设计技术．-2006,13(3)．-38—42(C2) 0619810锂离子电池正极材料LiFePO4研究进展[刊,中]／刘善科／／电源技术．-2006,30(5)．-424-428(D) LiFePO4作为一种新型的锂离子电池正极材料,安全性好,价格低廉,环境友好,循环性能稳定。结合本     

锂离子电池正极材料的研究进展

概述了国内外近10年来锂离子电池正极材料的研究进展;综述了几种主要的正极材料的性能优缺点及其目前的研究热点和发展方向。     

新型锂离子电池正极材料LiNi_(0.5)Mn_(1.5)O_4的形貌与组分分析

针对新型锂离子电池正极材料Li Ni0.5Mn1.5O4,采用SEM、EDS等手段进行分析,确定了导致电池性能不同的原因。同时,证明了扫描电镜和能谱仪能够应用于新材料的分析中。     

摄像机电池的升级换代和旧充电器改造

锂离子电池是一种新型直流电源,它的负极材料是锂金属,正极材料是碳材. 锂离子电池问世以来,以其他电池所不可比拟的优势迅速应用于许多领域,像大家熟知的移动电话、笔记本电脑、小型摄像机等,并且越来越多的国家将该电池应用于军事与尖端科学方面.实践表明,锂离子电池还是一种用途广泛的绿色电源.     

摄像机电池的升级换代和旧充电器改造

锂离子电池是一种新型直流电源,它的负极材料是锂金属,正极材料是碳材. 锂离子电池问世以来,以其他电池所不可比拟的优势迅速应用于许多领域,像大家熟知的移动电话、笔记本电脑、小型摄像机等,并且越来越多的国家将该电池应用于军事与尖端科学方面.实践表明,锂离子电池还是一种用途广泛的绿色电源. 　　……     

磷酸铁锂电池充电器CN3059

磷酸铁锂电池是一种用磷酸铁锂(LiFePO4)材料作电池正极、用石墨作电池负极的新型锂离子电池.关于该电池的详细介绍请参看本刊9期磷酸铁锂动力电池一文.     

锂离子蓄电池正极材料LiFePO_4研究进展

锂离子电池正极材料正在向着高比能量、长寿命、低成本、环境友好的方向发展,LiFePO4正极材料以其结构稳定、成本低、无污染等优点成为21世纪研究重点。综述了LiFePO4的研究进展。系统地阐述了其晶体结构特征及性能,以及合成方法、掺杂导电材料和控制晶体生长制备纳米粉体等对材料性能的影响。提出了下一步可能的研究方向。     

稀土钼热阴极材料研究与应用

综述了近年来稀土钼热阴极材料的研究和应用情况，着重对La2O3-Mo阴极材料近年来的研究进展进行了介绍。稀土钼作为一种资源丰富、发射性能优良、易加工、无放射性污染的新型热阴极材料，已逐步取代具有放射性污染的ThO2-W阴极材料，在中大功率电子管器件中获得应用。     

红外/雷达兼容隐身材料的研究现状与进展

随着各种新型探测雷达、先进红外探测器和精确制导武器的相继问世,红外/雷达兼容隐身材料已经成为了目前隐身技术研究的重点。综述了传统和新型红外/雷达兼容隐身材料的隐身原理和研究现状,并对未来红外/雷达兼容隐身材料的发展方向进行了总结与展望。     

新型电池正极材料失效机制的透射电子显微学研究

透射电镜作为当代最常用的材料表征手段之一,有着高的分辨率,可以较清晰地在原子尺度表征材料的微观结构与化学成分,在许多学科中发挥着关键作用.新型电池作为高效、清洁的储存装置,给现代生活带来了许多便利,拥有极大的科研与商用价值.而作为电池重要部件的正极材料,是否能高效、安全地工作,时刻影响着新型电池的商业化前景.本文综述了...     

Cationic–Anionic Redox Chemistry in Multivalent Metal-Ion Batteries: Recent Advances,Reaction Mechanism,Advanced Characterization Techniques,and Prospects

Rechargeable multivalent metal-ion batteries (MMIBs) have garnered a surge of attention as competitive candidates for large-scale energy storage applications owing to their high capacity, abundant resources, and good security. However, their practical implementation is still stuck at the prototype stage, mainly plagued with the lack of suitable cathode materials capable of reversible insertion/extraction of multivalent ions and the intrinsically complicated redox reaction mechanism. Recently, anionic redox chemistry has shown to be an effective strategy to increase energy density, providing a new research direction for the next generation of high-energy rechargeable batteries. Unfortunately, anion redox chemistry has not received sufficient attention in MMIBs so far. Here, the fundamental principle and mechanism of anionic redox reactions in MMIBs are discussed and the recent advances regarding cathode materials based on cooperative cationic–anionic redox (CCAR) mechanism are summarized. Additionally, various advanced characterization techniques for studying the anionic redox process are highlighted, aiming to effectively illustrate the underlying reaction mechanism. Finally, challenges and perspectives for the future research on cationic–anionic redox chemistry in MMIBs are proposed. Insight into the significance of CCAR chemistry is provided here in MMIBs, presenting a new avenue for the development of high-energy-density cathode materials for MMIBs.     

Natural Materials for Sustainable Organic Solar Cells: Status and Challenge

The exploitation of natural materials has received growing attention because of the needs of environmental sustainability. In contrast to petroleum-based synthetic materials, natural materials possess significant advantages of abundant, low-cost, degradable, and renewable. Here, the recent research status of natural materials as flexible substrate, cathode interfacial material, and anode interfacial material for organic photovoltaics (OPVs) are first presented. Then, the confronted key challenges that limit the widespread application of natural materials for OPVs is summarized, including complex multilength scaled aggregation morphology, non-conjugated structure, and unclear working mechanism. Finally, their potential solutions from the perspective of chemical structure are proposed for constructing efficient OPVs. It is believed that natural materials have a broad landscape in low-cost and green manufacturing technology for OPVs in the future.     

Engineering of Polyanion Type Cathode Materials for Sodium‐Ion Batteries: Toward Higher Energy/Power Density

The development of high energy/power density sodium‐ion batteries (SIBs) is still challenged by the high redox potential of Na/Na⁺ and large radius of Na⁺ ions, thus requiring extensive further improvement to, in particular, enhance the capacity and voltage of cathode materials. Among the various types of cathodes, the polyanion cathodes have emerged as the most pragmatic option due to their outstanding thermostability, unique inductive effect, and flexible structures. In this Review, a critical overview of the design principles and engineering strategies of polyanion cathodes that could have a pivotal role in developing high energy/power density SIBs are presented. Specifically, the engineering of polyanion cathode materials for higher voltage and specific capacity to increase energy density is discussed. The way in which morphology control, architectural design, and electrode processing have been developed to increase power density for SIBs is also analyzed. Finally, the remaining challenges and the future research direction of this field are presented.     

碳纳米管冷阴极材料制备及其场发射性能研究

在场发射显示器技术领域,碳纳米管被认为是目前最有前途的场发射冷阴极材料之一。碳纳米管具有低的场发射阈值电场,高的发射电流密度使它们比传统的热阴极材料以及其他的场发射冷阴极材料更适于实际的技术应用。介绍了碳纳米管的制备方法和场发射原理,并对碳纳米管的场发射性能研究进行了综合的评述。     

A Review on the Status and Challenges of Cathodes in Room-Temperature Na-S Batteries

The cathode materials for sodium-sulfur batteries have attracted great attention since cathode is one of the important components of the sodium-sulfur battery, and there are cathode materials that have high capacity, non-toxicity, and cost-efficiency. Nevertheless, due to their low Coulombic efficiency and proneness to cycling decay, the practical application of the sodium–sulfur battery has always been suppressed. In terms of the responsibility of these problems, the polysulfide shuttle and the sluggish kinetics are the main culprits. To address these issues, impeding the notorious reaction between polysulfide intermediates on the cathode and improve the kinetics reaction on the anode are extremely important. Herein, a comprehensive review is prepared of different approaches to increasing the electrochemical performance and strengthening the stability of cathodes. The influences of various choices and the consequent properties of the cathode in relation to the whole sodium–sulfur battery performance is investigated. Finally, the current research challenges related to cathodes for sodium–sulfur batteries and future perspectives are also discussed.     

Color plasma displays

After decades of research and development, plasma displays are finally beginning to appear in the commercial and consumer markets. Following a short review on the basic principles of direct and alternating current plasma displays, we present a summary of the status of color plasma displays. Plasma display panels (PDPs) have finally achieved luminance and efficiency values on par with hi-definition cathode ray tube monitors. Additional improvements in performance will open up a new world of large PDP displays. Ultimately, what will drive the PDP market will be continued improvements in the performance of color PDPs themselves. PDP makers are working on reducing power consumption through improved luminous efficiency and improved component materials and manufacturing methods of color PDPs. With improvements in the cell structure and driving methods, there is a good prospect of achieving a luminous efficiency of 2-3 lm/W and a power consumption of about 200 W for 50-in diagonal size