Highly Performing Sodium Metal Batteries Reinforced by a Self-Regulated Dual-Layered Solid Electrolyte Interphase via a Metal–Organic Framework,ACS Applied Materials & Interfaces

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Highly Performing Sodium Metal Batteries Reinforced by a Self-Regulated Dual-Layered Solid Electrolyte Interphase via a Metal–Organic Framework
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-07-23 , DOI: 10.1021/acsami.4c09387
Jiaze Lv _{1,

2,

3,

4} , Qiannan Wang _{2,

3,

4,

5} , Mingwei OuYang _{1,

2,

3,

4} , Yan Cao _{1,

2,

3,

4}

Affiliation

Sodium–metal batteries, heralded for high energy density and cost-effectiveness, are compromised by an unstable solid electrolyte interphase (SEI) and dendrite formation, which hinder practical applications. Herein, a zirconium-based metal–organic framework nanostructure coating (ZMOF-NSC) was constructed in a low-loss, flexible manner. Comprehensive studies show that ZMOF-NSC, with its periodically ordered nanochannels and organized pore structures, enhances ion transport and decreases the Na⁺ migration energy barrier, thus ensuring uniform ion flux and achieving uniform spherical deposition. Additionally, ZMOF-NSC facilitates partial desolvation, catalyzing the formation of an inorganic-rich, dual-layered SEI that effectively protects the anode and suppresses dendrite formation. Consequently, the ZMOF-NSC@Na symmetric battery exhibits an impressive lifespan of over 2500 h, demonstrating extended operational longevity. The Na₃V₂(PO₄)₃∥ZMOF-NSC@Na batteries demonstrate exceptional cycling stability with 81% capacity retention after 2000 cycles at 10 C, maintaining stability over 3000 cycles at 20 C. Moreover, the NVP∥ZMOF-NSC@Na battery achieves an energy density of 370 Wh kg^–1 and a power density of 10,484 W kg^–1, indicating superior durability and performance. This significant finding highlights the significant potential of structured MOFs to induce a dual-layered SEI, advancing the commercialization of durable, dendrite-free sodium metal batteries. The precise design of self-assembled pore structures and surface active sites in MOFs demonstrates significant potential in advancing the commercialization of durable, dendrite-free electrodes of metal-based rechargeable batteries.

中文翻译：

通过金属有机框架由自调节双层固体电解质界面增强的高性能钠金属电池

钠金属电池被誉为高能量密度和成本效益，但由于不稳定的固体电解质界面（SEI）和枝晶形成而受到损害，阻碍了实际应用。在此，以低损耗、灵活的方式构建了锆基金属有机框架纳米结构涂层（ZMOF-NSC）。综合研究表明，ZMOF-NSC以其周期性有序的纳米通道和有序的孔隙结构，增强了离子传输并降低了Na ⁺迁移能垒，从而保证了均匀的离子通量并实现均匀的球形沉积。此外，ZMOF-NSC 促进部分去溶剂化，催化形成富含无机物的双层 SEI，有效保护阳极并抑制枝晶形成。因此，ZMOF-NSC@Na 对称电池具有超过 2500 小时的令人印象深刻的使用寿命，证明了更长的运行寿命。 Na ₃ V ₂ (PO ₄ ) ₃ ∥ZMOF-NSC@Na 电池表现出出色的循环稳定性，在 10 C 下循环 2000 次后容量保持率为 81%，在 20 C 下循环超过 3000 次后仍保持稳定性。此外，NVP∥ZMOF-NSC @Na电池的能量密度为370 Wh kg ^–1 ，功率密度为10,484 W kg ^–1 ，表现出卓越的耐用性和性能。这一重大发现凸显了结构化 MOF 诱导双层 SEI 的巨大潜力，从而推动耐用、无枝晶钠金属电池的商业化。 MOF 中自组装孔结构和表面活性位点的精确设计在推进金属基可充电电池耐用、无枝晶电极的商业化方面具有巨大潜力。

更新日期：2024-07-23

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