All‐Solid‐State Chloride‐Ion Battery with Inorganic Solid Electrolyte
All‐Solid‐State Chloride‐Ion Battery with Inorganic Solid Electrolyte
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DOI：
10.1002/celc.202101017
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发表时间：
2021-09
期刊：
影响因子：
4
通讯作者：
R. Sakamoto;Nobuaki Shirai;Atsushi Inoishi;S. Okada
中科院分区：
文献类型：
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作者：
R. Sakamoto;Nobuaki Shirai;Atsushi Inoishi;S. Okada
氯离子电池具有高能量密度和低成本等优点。然而，它们的循环性能很差，因为氯化物作为一种活性物质容易溶解到极性溶剂中。本文研究了一种全固态氯离子电池，以掺杂KCl的pbcl2作为固体电解质来抑制氯离子的溶解。以BiCl3为阴极的全固态电池的初始放电容量为187 mAh g−1，相当于BiCl3理论容量的73%。此外，与先前报道的具有bicl3阴极的非水电池相比，它具有更好的可循环性。在充放电过程中，XRD和XPS分析证实了Cl−阴离子转化反应的独特行为，其中Bi通过放电产生，bicl3通过充电返回。
Chloride‐ion batteries have some attractive properties such as high energy density and low cost. However, they have poor cycle performance because chloride as an active material tends to dissolve into a polar solvent. Herein, an all‐solid‐state chloride‐ion battery is demonstrated with KCl‐doped PbCl2as a solid electrolyte to suppress the dissolution of chloride. The all‐solid‐state cell with BiCl3as the cathode had an initial discharge capacity of 187 mAh g−1, which corresponds to 73 % of the theoretical capacity of BiCl3. Moreover, it exhibited better cyclability compared to the previously reported non‐aqueous cell with BiCl3cathode. During the charge‐discharge process, XRD and XPS analysis confirmed the unique behavior of conversion reaction by Cl−anion, where Bi is produced by discharging and BiCl3returns by charging.