Recent developments and insights into the understanding of Na metal anodes for Na-metal batteries,Energy & Environmental Science

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Recent developments and insights into the understanding of Na metal anodes for Na-metal batteries
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-07-27 00:00:00 , DOI: 10.1039/c8ee01373j
Yang Zhao _{1,

2,

3,

4} , Keegan R. Adair _{1,

2,

3,

4} , Xueliang Sun _{1,

2,

3,

4}

Affiliation

Rechargeable Na-based battery systems, including Na-ion batteries, room temperature Na–S, Na–O₂, Na–CO₂, and all-solid-state Na metal batteries, have attracted significant attention due to the high energy density, abundance, low cost, and suitable redox potential of Na metal. However, the Na metal anode faces several challenges, including: (1) the formation of Na dendrites and short circuiting; (2) low Coulombic efficiency (CE) and poor cycling performance; and (3) an infinite volume change due to its hostless nature. Furthermore, the issues associated with Na metal anodes have also been noticed in practical Na metal batteries (NMBs). In recent years, the importance of the Na metal anode has been highlighted and many studies have provided potential solutions to address the issues of its use. This review article focuses on the recent developments of Na metal anodes, including insight into the fundamental understanding of its electrochemical processes, novel characterization methods, approaches for protecting the anode and future perspectives. Our review will accelerate further improvement in the characterization and application of Na metal anodes for next-generation NMB systems.

中文翻译：

对用于钠金属电池的钠金属阳极的理解的最新进展和见解

可充电的基于Na的电池系统，包括Na离子电池，室温Na–S，Na–O ₂，Na–CO ₂，以及全固态Na金属电池，由于Na金属的高能量密度，丰度，低成本和合适的氧化还原电势，引起了广泛的关注。然而，金属钠阳极面临若干挑战，包括：（1）钠树枝状晶体的形成和短路；（2）库仑效率低，循环性能差；（3）由于其无主机特性，音量无穷大。此外，在实际的钠金属电池（NMB）中也已经注意到与钠金属阳极相关的问题。近年来，人们已经强调了钠金属阳极的重要性，许多研究为解决其使用问题提供了潜在的解决方案。这篇评论文章重点介绍钠金属阳极的最新发展，包括深入了解其电化学过程的基本知识，新颖的表征方法，保护阳极的方法以及未来的前景。我们的审查将加速在下一代NMB系统中Na金属阳极的表征和应用方面的进一步改进。

更新日期：2018-07-27

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