TY - JOUR
T1 - Anion–Cation Competition Chemistry for Comprehensive High-Performance Prussian Blue Analogs Cathodes
AU - Cui, Mangwei
AU - Zhu, Yilong
AU - Lei, Hao
AU - Liu, Ao
AU - Mo, Funian
AU - Ouyang, Kefeng
AU - Chen, Sheng
AU - Lin, Xi
AU - Chen, Zuhuang
AU - Li, Kaikai
AU - Jiao, Yan
AU - Zhi, Chunyi
AU - Huang, Yan
PY - 2024/6/3
Y1 - 2024/6/3
N2 - The extensively studied Prussian blue analogs (PBAs) in various batteries are limited by their low discharge capacity, or subpar rate etc., which are solely reliant on the cation (de)intercalation mechanism. In contrast to the currently predominant focus on cations, we report the overlooked anion-cation competition chemistry (Cl−, K+, Zn2+) stimulated by high-voltage scanning. With our designed anion-cation combinations, the KFeMnHCF cathode battery delivers comprehensively superior discharge performance, including voltage plateau >2.0 V (vs. Zn/Zn2+), capacity >150 mAh g−1, rate capability with capacity maintenance above 96 % from 0.6 to 5 A g−1, and cyclic stability exceeding 3000 cycles. We further verify that such comprehensive improvement of electrochemical performance utilizing anion-cation competition chemistry is universal for different types of PBAs. Our work would pave a new and efficient road towards the next-generation high-performance PBAs cathode batteries. © 2024 Wiley-VCH GmbH.
AB - The extensively studied Prussian blue analogs (PBAs) in various batteries are limited by their low discharge capacity, or subpar rate etc., which are solely reliant on the cation (de)intercalation mechanism. In contrast to the currently predominant focus on cations, we report the overlooked anion-cation competition chemistry (Cl−, K+, Zn2+) stimulated by high-voltage scanning. With our designed anion-cation combinations, the KFeMnHCF cathode battery delivers comprehensively superior discharge performance, including voltage plateau >2.0 V (vs. Zn/Zn2+), capacity >150 mAh g−1, rate capability with capacity maintenance above 96 % from 0.6 to 5 A g−1, and cyclic stability exceeding 3000 cycles. We further verify that such comprehensive improvement of electrochemical performance utilizing anion-cation competition chemistry is universal for different types of PBAs. Our work would pave a new and efficient road towards the next-generation high-performance PBAs cathode batteries. © 2024 Wiley-VCH GmbH.
KW - anion-cation competition chemistry
KW - electrochemical performance
KW - PBAs cathode batteries
UR - http://www.scopus.com/inward/record.url?scp=85190689857&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85190689857&origin=recordpage
U2 - 10.1002/anie.202405428
DO - 10.1002/anie.202405428
M3 - RGC 21 - Publication in refereed journal
SN - 1433-7851
VL - 63
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 23
M1 - e202405428
ER -