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首页> 外文期刊>Materials Science & Engineering >A comprehensive review of Li_4Ti_5O_(12)-based electrodes for lithium-ion batteries: The latest advancements and future perspectives
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A comprehensive review of Li_4Ti_5O_(12)-based electrodes for lithium-ion batteries: The latest advancements and future perspectives

机译：锂离子电池用Li_4Ti_5O_（12）基电极的全面综述：最新进展和未来展望

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摘要

Advanced electrical energy storage technology is a game changer for a clean, sustainable, and secure energy future because efficient utilization of newable energy hinges on cost-effect and efficient energy storage. Further, the viability of many emerging technologies depends on breakthroughs in energy storage technologies, including electric vehicles (EVs) or hybrid electric vehicles (HEVs) and smart grids. Lithium-ion batteries (LIBs), a great success in the portable electronics sector, are believed also the most promising power sources for emerging technologies such as EVs and smart grids. To date, however, the existing LIBs (with LiCoO_x cathode and graphite anode) are still unable to meet the strict requirements for safety, cycling stability, and rate capability. The development of advanced anode materials, which can overcome the shortcomings of graphite anode (such as formation of dendritic lithium during charge and undesirable solid electrolyte interface), is of critical importance to enhancing the cycling stability and operational safety of LIBs. Lithium titanate (Li_4Ti_5O_(12)) has recently attracted considerable attentions as a potential anode material of LIBs for high power applications due to several outstanding features, including a flat charge/discharge plateaus (around 1.55 V vs. Li/Li~+) because of the two-phase lithium insertion/extraction mechanism and minimum chance for the formation of SEI and dendritic lithium, dramatically enhance the potential for high rate capability and safety. In addition, there is almost no volume change during the lithium insertion and extraction processes, ensuring a high cycling stability and long operational life. However, the electronic conductivity of Li_4Ti_5O_(12) is relatively low, resulting in large polarization lose, more so at higher cycling rates, and poor rate performance. Currently, considerable research efforts have been devoted to improving the performance of Li_4Ti_5O_(12) at fast charge/discharge rates, and some important progresses have been made. In this review, we first present a general overview of the structural features, thermodynamic properties, transport properties, and the electrochemical behavior of Li_4Ti_5O_(12) under typical battery operating conditions. We then provide a comprehensive review of the recent advancements made in characterization, modification, and applications of Li_4Ti_5O_(12) electrodes to LIBs, including nanostructuring, surface coating, morphological optimization, doping, and rational design of composite electrodes. Finally, we highlight the critical challenges facing us today and future perspectives for further development of Li_4Ti_5O_(12)-based electrodes. It is hoped that this review may provide some useful guidelines for rational design of better electrodes for advanced LIBs.
机译：先进的电能存储技术是清洁，可持续和安全能源未来的游戏规则改变者，因为可再生能源的有效利用取决于成本效益和有效的能源存储。此外，许多新兴技术的可行性取决于储能技术的突破，包括电动汽车（EV）或混合电动汽车（HEV）和智能电网。锂离子电池（LIB）在便携式电子领域取得了巨大的成功，被认为也是新兴技术（例如EV和智能电网）最有希望的电源。然而，迄今为止，现有的LIB（带有LiCoO_x阴极和石墨阳极）仍无法满足对安全性，循环稳定性和倍率性能的严格要求。先进的阳极材料的开发可以克服石墨阳极的缺点（例如在充电过程中形成树枝状锂以及不良的固体电解质界面），对于提高LIB的循环稳定性和操作安全性至关重要。钛酸锂（Li_4Ti_5O_（12））由于具有出色的功能，包括平坦的充电/放电平稳段（相对于Li / Li〜+约为1.55 V），最近成为高功率LIB潜在的阳极材料备受瞩目。两相锂插入/抽出机理的成功以及SEI和树枝状锂形成的机会最小，极大地提高了高倍率能力和安全性的潜力。此外，在锂的插入和提取过程中几乎没有体积变化，从而确保了高循环稳定性和长使用寿命。然而，Li_4Ti_5O_（12）的电子电导率相对较低，导致极化损耗大，在较高的循环速率下更是如此，并且速率性能较差。当前，已经致力于大量研究工作以改善在快速充电/放电速率下的Li_4Ti_5O_（12）的性能，并且已经取得了一些重要的进展。在这篇综述中，我们首先介绍Li_4Ti_5O_（12）在典型电池工作条件下的结构特征，热力学性质，传输性质和电化学行为。然后，我们对Li_4Ti_5O_（12）电极的表征，修饰和在LIB上的应用方面的最新进展进行了全面综述，包括纳米结构，表面涂层，形态优化，掺杂和复合电极的合理设计。最后，我们强调了我们目前面临的重大挑战以及基于Li_4Ti_5O_（12）的电极的进一步发展的未来前景。希望这篇综述可以为合理设计高级LIB的更好的电极提供一些有用的指导。

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  • 来源
    《Materials Science & Engineering》 |2015年第12期|1-71|共71页
  • 作者

    Bote Zhao; Ran Ran; Meilin Liu; Zongping Shao;

  • 作者单位

    State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, PR China,School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA;

    State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, PR China;

    School of Materials Science and Engineering, Center for Innovative Fuel Cell and Battery Technologies, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA;

    State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, PR China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lithium-ion battery; Li_4Ti_5O_(12); Anode; Electrode materials; Spinel;

    机译：锂离子电池;Li_4Ti_5O_（12）;阳极;电极材料;尖晶石;

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