Structuring electrodes via acoustic-field-assisted particle patterning for enhanced performance of lithium-ion batteries
Structuring electrodes via acoustic-field-assisted particle patterning for enhanced performance of lithium-ion batteries
复制标题
通过声场辅助颗粒图案化构建电极以增强锂离子电池的性能
DOI：
10.1039/d3ta01180a
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发表时间：
2023
影响因子：
11.9
通讯作者：
Hu, Shan
中科院分区：
文献类型：
--
作者：
Zhang, Yifan;Shahriar, M.;Hu, Shan
当前电池电极中缓慢的质量传输限制了它们的性能，特别是在高速率循环下，甚至对能量密度产生负面影响。在这项研究中，我们报告了一种声场辅助粒子图案化方法，以产生有序结构的LiFePO4（LFP）和Li4Ti5O12（LTO）电极，以促进锂离子扩散和电荷传输动力学在这些电极。在面积质量负载高达18 mg cm−2的情况下，通过我们基于声场的方法生产的LFP和LTO电极在0.1C下分别提供165.8和173.5 mA h g−1，并且在高达5C的速率下保持高达51%的理论容量，显示出比通过传统铸造制造的电极更优越的上级速率能力。这项工作代表了一种新的和有效的策略，以工程的电极结构，以提高在LIB电极的性能。
The sluggish mass transport in current battery electrodes limits their performance, especially at high-rate cycling, and even negatively impacts the energy density. In this study, we report an acoustic-field-assisted particle patterning method to generate ordered structures in LiFePO4 (LFP) and Li4Ti5O12 (LTO) electrodes to facilitate lithium-ion diffusion and charge transport kinetics in these electrodes. With areal mass loading up to 18 mg cm−2, LFP and LTO electrodes produced by our acoustic field-based method deliver 165.8 and 173.5 mA h g−1 at 0.1C, respectively, and maintain up to 51% of theoretical capacity at rates up to 5C, showing superior rate capability over the ones fabricated via conventional casting. This work represents a novel and effective strategy to engineer the electrode structure for enhancing the performance of electrodes in LIBs.