An All‐Solid‐State Bromide‐Ion Battery,ChemElectroChem

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An All‐Solid‐State Bromide‐Ion Battery
ChemElectroChem ( IF 3.5 ) Pub Date : 2020-12-23 , DOI: 10.1002/celc.202001481
Atsushi Inoishi ₁ , Masahiro Hokazono ₁ , Eiko Kashiwazaki ₁ , Naoko Setoguchi ₁ , Takaaki Sakai ₂ , Ryo Sakamoto ₃ , Shigeto Okada ₁

Affiliation

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 PbBr₂ electrolyte 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 BiBr₃ positive 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.

中文翻译：

全固态溴离子电池

与传统的锂离子电池相比，溴离子电池可提供更高的能量密度，但溴盐的高水溶性可能需要全固态电池。幸运的是，低溴化盐的杨氏模量在制造高性能全固态电池方面具有优势。本研究首次展示了全固态溴离子电池。在这项工作中，通过机械研磨制备了一种新型的单相，掺K的PbBr ₂电解质，并且由于其模量低，因此可以很容易地通过单轴冷压从该材料中获得高密度的颗粒。使用BiBr ₃时，实验电池的初始放电容量等于理论容量的87％正极。这种溴化穿梭电池的概念有望促进基于新型转化反应的，结合了新活性物质的下一代电池的研究。

更新日期：2021-01-16

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