TY - JOUR
T1 - Unveiling Aqueous Potassium-Ion Batteries with Prussian Blue Analogue Cathodes
AU - Tan, Xu
AU - Gao, Chenyang
AU - Luo, Zhifen
AU - Fan, Weijia
AU - Xiong, Xiaosong
AU - Shi, Zezhong
AU - Zhang, Ningxun
AU - Yang, Zheng
AU - Ma, Yuan
AU - Cheng, Xin Bing
AU - Zhong, Yiren
AU - He, Jiarui
AU - Zhu, Zhi
AU - Wang, Faxing
AU - Wang, Tao
AU - Lu, Bingan
AU - Wu, Yuping
N1 - Publisher Copyright:
© 2025 Wiley-VCH GmbH.
PY - 2025/3/5
Y1 - 2025/3/5
N2 - Aqueous rechargeable potassium-ion batteries have considerable advantages and potentials in the application of large-scale energy storage systems, owing to its high safety, abundant potassium resources, and environmental friendliness. However, the practical applications are fraught with numerous challenges. Identification of suitable cathode materials and potassium storage mechanisms are of great significance. Herein, an aqueous potassium-ion battery comprising Prussian blue analogs cathode (K1.15Fe[Fe(CN)6]·1.36H2O) and perylene-3,4,9,10-tetracarboxylic anode is designed, which delivers a high energy density of 52.0 Wh kg−1 and excellent cycling stability with high capacity retention of 84.5% after 4000 cycles. Importantly, a synergistic study of the relationships among crystal structure, spin state, kinetics, and electrochemical performances is thoroughly conducted. By employing in situ and ex situ characterizations, the potassium storage mechanism is comprehensively elucidated from multiple perspectives.
AB - Aqueous rechargeable potassium-ion batteries have considerable advantages and potentials in the application of large-scale energy storage systems, owing to its high safety, abundant potassium resources, and environmental friendliness. However, the practical applications are fraught with numerous challenges. Identification of suitable cathode materials and potassium storage mechanisms are of great significance. Herein, an aqueous potassium-ion battery comprising Prussian blue analogs cathode (K1.15Fe[Fe(CN)6]·1.36H2O) and perylene-3,4,9,10-tetracarboxylic anode is designed, which delivers a high energy density of 52.0 Wh kg−1 and excellent cycling stability with high capacity retention of 84.5% after 4000 cycles. Importantly, a synergistic study of the relationships among crystal structure, spin state, kinetics, and electrochemical performances is thoroughly conducted. By employing in situ and ex situ characterizations, the potassium storage mechanism is comprehensively elucidated from multiple perspectives.
KW - PTCDI
KW - Prussian blue analogues
KW - aqueous battery
KW - in situ Raman
KW - potassium-ion battery
UR - http://www.scopus.com/inward/record.url?scp=86000378697&partnerID=8YFLogxK
U2 - 10.1002/smll.202410350
DO - 10.1002/smll.202410350
M3 - 文章
AN - SCOPUS:86000378697
SN - 1613-6810
VL - 21
JO - Small
JF - Small
IS - 9
M1 - 2410350
ER -