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量身定制水平沉积用于长期高负载NCA (≥5 mA h cm-2) 的电池Lithium-Metal全细胞在碳酸盐电解质中

Eunmo Ku¹, Ho-Sung Yang², Hae Gon Lee³

¹School of Polymer System/Department of Fiber Convergence Materials Engineering, Dankook University, Yongin 16890, Republic of Korea.

|October 5, 2024

概括

一个新的托管层促进了高能金属电池中均的沉积. 这一突破提高了自行车性能,为先进电池的商业化铺平了道路.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
电池技术电池技术

背景情况:

高能量的金属电池对于下一代能源存储至关重要.
在碳酸盐电解质中实现高负荷 (≥5 mA h cm−2) 仍然是一个挑战.
统一的沉积对于电池的寿命和安全至关重要.

研究的目的:

设计一个协同的托管层,以便在高负载金属全电池中均地沉积.
为了研究托管层对沉积行为的影响.
为了提高金属电池的循环性能.

主要方法:

密度函数理论 (DFT) 计算用于设计托管层.
制造一个三维的银/碳复合纳米纤维 (Ag/CNF) 网络和一个 (Pt) 涂层聚烯分离器.
电化学测试使用Li的基体的对称电池和Li (Ni,Co,Al) O2 (NCA) 的基体的金属全电池.
低温聚焦离子束 (FIB) 截面成像以分析沉积.

主要成果:

协同主机层成功地促进了Ag/CNF网络上的水平沉积.
低温FIB成像证实了循环阳极上密集的沉积.
托管层在各种条件下将平均自行车性能提高了78.27%.

结论:

设计的协同托管层有效地使碳酸盐电解质中的高负载金属电池能够均地沉积.
这种方法显著提高了电池循环性能.
这些发现为高能量密度金属电池的商业化提供了有前途的战略.

关键词:

李的亲和力李的亲和力金属电池电池的使用情况高负载的NCA使用高负载的NCA.横向的沉积液体沉积.协同作用的托管层.

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