Room Temperature Operation of All-Solid-State Potassium-Ion Battery Enabled by Unconventional Ionic Solid Electrolyte K6[Rh4Zn4(l-cys)12O]·nH2O

IF 3.3 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Chemistry - An Asian Journal Pub Date : 2025-04-08 DOI:10.1002/asia.202401781

Ryo Sakamoto, Kosuke Nakamoto, Atsushi Inoishi, Masato Ito, Nobuto Yoshinari, Takumi Konno, Yukihiro Hara, Takafumi Fujii, Shigeto Okada

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Abstract

The unconventional ionic solid, K₆[Rh₄Zn₄(L-cys)₁₂O]·nH₂O, exhibited excellent formability as well as high ionic conductivity. These features enabled a straightforward assembly of all-solid-state potassium-ion battery: A cold-pressed solid sample of K₆[Rh₄Zn₄(L-cys)₁₂O]·nH₂O, which was sandwiched by solid samples of K₂Ni[Fe(CN)₆] and chloranil as cathode, and anode, respectively, displayed an initial discharge capacity of 21.6 mAh g⁻¹-electrodes at 25 °C at a current density of 0.5 mA cm⁻² (∼0.34C). Energy dispersive X-ray spectroscopy analysis confirmed that K⁺ ions swiftly conduct through K₆[Rh₄Zn₄(L-cys)₁₂O]·nH₂O between the cathode and anode during charge–discharge cycles.

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非常规离子固体电解质K6[Rh4Zn4(l-cys) 120o]·nH2O实现全固态钾离子电池室温运行

非常规离子固体K6[Rh4Zn4(L-cys)12O]·nH2O表现出优异的可成形性和高离子导电性。这些特征使得全固态钾离子电池的组装变得简单：K6[Rh4Zn4(L-cys)12O]·nH2O的冷压固体样品，分别被K2Ni[Fe(CN)6]和氯胺的固体样品夹在阴极和阳极之间，在25°C下，电流密度为0.5 mA cm-2 (~ 0.34C)，显示出21.6 mAh g-1的初始放电容量。能量色散x射线能谱分析证实，在充放电循环过程中，K+离子在阴极和阳极之间快速穿过K6[Rh4Zn4(L-cys)12O]·nH2O。

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来源期刊

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).