Recent progress and strategic perspectives of inorganic solid electrolytes: fundamentals, modifications, and applications in sodium metal batteries,Chemical Society Reviews

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Recent progress and strategic perspectives of inorganic solid electrolytes: fundamentals, modifications, and applications in sodium metal batteries
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2023-06-27 , DOI: 10.1039/d2cs01029a
Jiawen Huang ₁ , Kuan Wu _{1,

2} , Gang Xu ₁ , Minghong Wu _{1,

3} , Shixue Dou _{2,

4} , Chao Wu _{1,

2}

Affiliation

Solid-state electrolytes (SEs) have attracted overwhelming attention as a promising alternative to traditional organic liquid electrolytes (OLEs) for high-energy-density sodium-metal batteries (SMBs), owing to their intrinsic incombustibility, wider electrochemical stability window (ESW), and better thermal stability. Among various kinds of SEs, inorganic solid-state electrolytes (ISEs) stand out because of their high ionic conductivity, excellent oxidative stability, and good mechanical strength, rendering potential utilization in safe and dendrite-free SMBs at room temperature. However, the development of Na-ion ISEs still remains challenging, that a perfect solution has yet to be achieved. Herein, we provide a comprehensive and in-depth inspection of the state-of-the-art ISEs, aiming at revealing the underlying Na⁺ conduction mechanisms at different length scales, and interpreting their compatibility with the Na metal anode from multiple aspects. A thorough material screening will include nearly all ISEs developed to date, i.e., oxides, chalcogenides, halides, antiperovskites, and borohydrides, followed by an overview of the modification strategies for enhancing their ionic conductivity and interfacial compatibility with Na metal, including synthesis, doping and interfacial engineering. By discussing the remaining challenges in ISE research, we propose rational and strategic perspectives that can serve as guidelines for future development of desirable ISEs and practical implementation of high-performance SMBs.

中文翻译：

无机固体电解质的最新进展和战略展望：钠金属电池的基础知识、改进和应用

固态电解质（SE）由于其固有的不燃性和更宽的电化学稳定性窗口（ESW），作为高能量密度钠金属电池（SMB）中传统有机液体电解质（OLE）的有前途的替代品而引起了广泛关注。，以及更好的热稳定性。在各种SE中，无机固态电解质（ISE）因其高离子电导率、优异的氧化稳定性和良好的机械强度而脱颖而出，在室温下安全且无枝晶的SMB中具有潜在的应用前景。然而，Na离子ISE的开发仍然充满挑战，尚未实现完美的解决方案。在此，我们对最先进的ISE进行了全面、深入的研究，旨在揭示不同长度尺度下潜在的Na ⁺传导机制，并从多个方面解释它们与Na金属阳极的兼容性。彻底的材料筛选将包括迄今为止开发的几乎所有ISE，即氧化物、硫族化物、卤化物、反钙钛矿和硼氢化物，然后概述增强其离子电导率和与Na金属的界面相容性的改性策略，包括合成、掺杂和界面工程。通过讨论 ISE 研究中剩余的挑战，我们提出了理性和战略性的观点，可以作为未来开发理想的 ISE 和高性能中小企业的实际实施的指南。

更新日期：2023-06-28

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