全固态电池与无机固体电解质的界面和相间。,Chemical Reviews

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全固态电池与无机固体电解质的界面和相间。
Chemical Reviews ( IF 51.4 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.chemrev.0c00101
Abhik Banerjee _{1,

2} , Xuefeng Wang _{1,

3} , Chengcheng Fang ₁ , Erik A Wu ₁ , Ying Shirley Meng ₁

Affiliation

作为安全和高能电池未来的关键技术之一，全固态电池（ASSB）引起了极大的关注。近年来，随着几种高导电性固体电解质的出现，瓶颈不再是锂离子在电解质中的扩散。相反，由于ASSB内部接口处的高电阻，许多ASSB受其库仑效率低，功率性能差和循环寿命短的限制。由于ASSB中各种固体组分的化学/物理/机械特性各异，以及固-固接触的性质，ASSB中存在许多类型的界面。这些包括松散的物理接触，晶界以及化学和电化学反应等。所有这些都有助于增加界面处的电阻。这里，我们介绍了ASSB中典型接口和中间阶段的独特功能，并总结了有关识别，探测，理解和设计它们的最新工作。我们强调了相间复杂但重要的特征，即阴极-电解质和电解质-阳极界面的组成，分布以及电子和离子性质。了解这些属性是设计稳定接口的关键。此外，还对防止副反应的保形涂料及其选择标准进行了审查。我们强调界面的机械行为以及所有ASSB组件的机械性能的重要作用，尤其是在恒定堆压力下使用软锂金属阳极时。最后，我们提供全方位（能源，空间，和时间）表征方法，以探索，诊断和了解动态界面和埋藏界面及相间。对于复杂的界面和相，要有透彻和深入的了解，对于制造实用的高能量ASSB至关重要。

"点击查看英文标题和摘要"

Interfaces and Interphases in All-Solid-State Batteries with Inorganic Solid Electrolytes.

All-solid-state batteries (ASSBs) have attracted enormous attention as one of the critical future technologies for safe and high energy batteries. With the emergence of several highly conductive solid electrolytes in recent years, the bottleneck is no longer Li-ion diffusion within the electrolyte. Instead, many ASSBs are limited by their low Coulombic efficiency, poor power performance, and short cycling life due to the high resistance at the interfaces within ASSBs. Because of the diverse chemical/physical/mechanical properties of various solid components in ASSBs as well as the nature of solid–solid contact, many types of interfaces are present in ASSBs. These include loose physical contact, grain boundaries, and chemical and electrochemical reactions to name a few. All of these contribute to increasing resistance at the interface. Here, we present the distinctive features of the typical interfaces and interphases in ASSBs and summarize the recent work on identifying, probing, understanding, and engineering them. We highlight the complicated, but important, characteristics of interphases, namely the composition, distribution, and electronic and ionic properties of the cathode–electrolyte and electrolyte–anode interfaces; understanding these properties is the key to designing a stable interface. In addition, conformal coatings to prevent side reactions and their selection criteria are reviewed. We emphasize the significant role of the mechanical behavior of the interfaces as well as the mechanical properties of all ASSB components, especially when the soft Li metal anode is used under constant stack pressure. Finally, we provide full-scale (energy, spatial, and temporal) characterization methods to explore, diagnose, and understand the dynamic and buried interfaces and interphases. Thorough and in-depth understanding on the complex interfaces and interphases is essential to make a practical high-energy ASSB.

更新日期：2020-07-22

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