用于锂氧$_2$电池的不含粘合剂的CNT阴极，具有一次以上的使用寿命
Binder-free CNT cathodes for Li-O$_2$ batteries with more than one life
摘要：
Li-O $_2$电池（LOB）的性能退化最终通过在循环期间放电产物的累积和多孔电极的不可逆堵塞而发生。在存在还原氧物质的情况下电极粘合剂降解可导致导电表面的额外涂层，从而加剧容量衰减。在此，我们建立了一种简便的方法来制造独立的，无粘合剂的电极LOB中，多壁碳纳米管（MWCNT）形成交联网络表现出高孔隙率，导电性和灵活性。这些电极在LOB中循环时表现出高再现性。细胞死亡后，有效和廉价的方法来洗去积累的放电产物，作为修复方法。这些电极的第二次使用寿命得到确认，没有明显的性能损失。这些发现旨在帮助开发更绿色的高能量密度电池，同时降低制造和回收成本。
英文摘要：
Li-O$_2$ batteries (LOB) performance degradation ultimately occurs through the accumulation of discharge products and irreversible clogging of the porous electrode during the cycling. Electrode binder degradation in the presence of reduced oxygen species can result in additional coating of the conductive surface, exacerbating capacity fading. Herein, we establish a facile method to fabricate free-standing, binder-free electrodes for LOBs in which multi-wall carbon nanotubes (MWCNT) form cross-linked networks exhibiting high porosity, conductivity, and flexibility. These electrodes demonstrate high reproducibility upon cycling in LOBs. After cell death, efficient and inexpensive methods to wash away the accumulated discharge products are demonstrated, as reconditioning method. The second life usage of these electrodes is validated, without noticeable loss of performance. These findings aim to assist in the development of greener high energy density batteries while reducing manufacturing and recycling costs.
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