Cost-effective strategies for enhancing performance of lithium metal batteries (LMB) are in high demand. Herein, we propose and demonstrate that applying an external acoustic field can significantly enhance LMB performance, offering a novel approach to advancing battery technology. Long-term electrochemical stability tests, along with SEM and XPS characterization, reveal that this enhancement may result from the increased lithium-ion diffusion at slip lines and kinks, which can enable a more uniform solid electrolyte interphase (SEI) layer. Without the acoustic field, lithium ions exhibit slower conduction through thicker SEI regions, influenced by slip lines and kinks. In contrast, the application of an acoustic field facilitates more uniform ion diffusion, thereby enhancing overall performance. This approach provides a valuable pathway for advancing battery technology beyond the traditional focus on material innovation.

中文翻译：

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通过声场应用提高锂金属电池的性能


提高锂金属电池 （LMB） 性能的具有成本效益的策略需求量很大。在此，我们提出并证明施加外部声场可以显着提高 LMB 性能，为推进电池技术提供了一种新方法。长期电化学稳定性测试以及 SEM 和 XPS 表征表明，这种增强可能是由于滑移线和扭结处的锂离子扩散增加造成的，从而可以实现更均匀的固体电解质界面 （SEI） 层。在没有声场的情况下，锂离子在较厚的 SEI 区域中的传导速度较慢，受滑移线和扭结的影响。相比之下，声场的应用有助于更均匀的离子扩散，从而提高整体性能。这种方法为推动电池技术超越传统的材料创新提供了一条有价值的途径。