Enabling “Sodium–Metal-Free” Manufacturing of Solid-State Batteries,ACS Energy Letters

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Enabling “Sodium–Metal-Free” Manufacturing of Solid-State Batteries
ACS Energy Letters ( IF 19.3 ) Pub Date : 2024-08-23 , DOI: 10.1021/acsenergylett.4c01724
Kang-Ting Tseng ₁ , Kiwoong Lee ₂ , Jeff Sakamoto _{1,

3}

Affiliation

The Na–metal-free manufacturing approach can improve both the manufacturing and performance of Na metal solid-state batteries. While significant research has been dedicated to Li–metal-free manufacturing, the exploration of Na-based counterparts remains relatively nascent. Similar to Li–metal-free manufacturing, achieving uniform Na deposition remains a challenge when using a solid-state electrolyte. In this work, we demonstrated the ability to plate a uniform 2.0 mAh cm^–2 Na metal anode by the simple placement of an Al foil-based current collector on NASICON solid-state electrolyte. The Na anode uniformity was dramatically improved by functionalizing the Al CC with a ∼96 nm thick layer of Au. It was shown that the in situ plated Na is homogeneous and dense and can be reversibly stripped and plated at a Coulombic efficiency of >90%. Our findings advance the understanding of Na nucleation and growth and offer insights into streamlining manufacturing processes for future all-solid-state Na anodes.

中文翻译：

实现固态电池的“无钠金属”制造

无钠金属制造方法可以提高钠金属固态电池的制造和性能。虽然大量研究致力于无锂金属制造，但对钠基同类产品的探索仍相对处于起步阶段。与无锂金属制造类似，使用固态电解质时实现均匀的钠沉积仍然是一个挑战。在这项工作中，我们展示了通过在 NASICON 固态电解质上简单放置基于铝箔的集流体来镀覆均匀 2.0 mAh cm ^–2 Na 金属阳极的能力。通过使用约 96 nm 厚的 Au 层对 Al CC 进行功能化，Na 阳极的均匀性得到了显着改善。结果表明，原位沉积的 Na 均匀且致密，可以以 >90% 的库仑效率可逆地剥离和沉积。我们的研究结果增进了对钠成核和生长的理解，并为简化未来全固态钠阳极的制造工艺提供了见解。

更新日期：2024-08-23

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