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首页> 外文期刊>ACS applied materials & interfaces >Presodiation Strategies and Their Effect on Electrode–Electrolyte Interphases for High-Performance Electrodes for Sodium-Ion Batteries
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Presodiation Strategies and Their Effect on Electrode–Electrolyte Interphases for High-Performance Electrodes for Sodium-Ion Batteries

机译：预备策略及其对钠离子电池高性能电极电极电解质界面的影响

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摘要

Most active materials for sodium-ion batteries suffer from the problem of low-energy efficiency in the first cycle because of the loss of active sodium ions consumed for the formation of a solid electrolyte interface. To make up for the lost sodium ion, presodiation treatments have been applied, which are effective ways to mitigate the low initial efficiency. Here, we developed a direct-contact method to achieve the presodiation for cathode and anode electrodes and demonstrated the enhanced Coulombic efficiency of the first cycle with improved cyclability and reversible capacity. Moreover, we proved the formation of a thick passivation layer at the cathode–electrolyte interface during the presodiation process; this contributes to the improved cycle stability by preventing the dissolution of the active material and its deposition on the anode surface. The direct-contact method is a simple and cost-effective way to complete presodiation, and this simple process will be widely applicable for practical battery manufacturing.
机译：由于用于形成固体电解质界面的活性钠离子的损失，最多的钠离子电池的最活跃材料遭受了第一周期的低能量效率的问题。为了弥补损失的钠离子，已经应用预先处理，这是减轻低初始效率的有效方法。在这里，我们开发了一种直接接触方法，以实现阴极和阳极电极的预设，并展示了第一周期的增强的库仑效率，具有改善的可循环性和可逆容量。此外，我们在预设过程中证明了在阴极电解质界面处形成厚钝化层;这通过防止活性材料的溶解及其在阳极表面上的沉积来提高循环稳定性。直接接触方法是一种简单且经济高效的方法来完成预设，这一简单的过程将广泛适用于实用电池制造。

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