An All‐Solid‐State Bromide‐Ion Battery
An All‐Solid‐State Bromide‐Ion Battery
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DOI：
10.1002/celc.202001481
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发表时间：
2021-01
期刊：
影响因子：
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通讯作者：
Atsushi Inoishi;M. Hokazono;Eiko Kashiwazaki;N. Setoguchi;T. Sakai;R. Sakamoto;S. Okada
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文献类型：
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作者：
Atsushi Inoishi;M. Hokazono;Eiko Kashiwazaki;N. Setoguchi;T. Sakai;R. Sakamoto;S. Okada
与传统的锂离子电池相比，溴化物离子电池可以提供更高的能量密度，但溴化物盐的高水溶性可能需要全固态电池。幸运的是，溴化物盐的低杨氏模量在制造高性能全固态电池方面是一个优势。目前的研究首次展示了全固态溴化物离子电池。在这项工作中，通过机械铣削制备了一种新型的单相K掺杂pbbr2电解质，并且由于其低模量，通过单轴冷压可以很容易地从该材料中获得高密度的球团。实验电池在使用bibr3正极时，其初始放电容量为理论容量的87%。溴化物穿梭电池的这一概念有望促进结合新活性材料和基于转化型反应的下一代电池的研究。
Bromide‐ion batteries can provide higher energy densities compared to conventional lithium‐ion batteries, but the high water solubility of bromide salts may require all‐solid‐state cells. Fortunately, the low Young's modulus of bromide salts is an advantage in terms of fabricating high‐performance all‐solid‐state cells. The present study provides the first‐ever demonstration of an all‐solid‐state bromide‐ion battery. In this work, a novel, single‐phase, K‐doped PbBr2electrolyte was prepared by mechanical milling, and highly dense pellets were readily obtained from this material by uniaxial cold pressing, because of its low modulus. An initial discharge capacity equal to 87 % of the theoretical capacity was exhibited by an experimental battery when using a BiBr3positive electrode. This concept of a bromide shuttle battery is expected to promote the research of next‐generation batteries incorporating new active materials and based on conversion‐type reactions.