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Multi‐metal doped high capacity and stable Prussian blue analogue for sodium ion batteries
Author(s) -
Zhu Youhuan,
Zhang Zhi,
Bao Junjie,
Zeng Shaohua,
Nie Wangyan,
Chen Pengpeng,
Zhou Yifeng,
Xu Ying
Publication year - 2020
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5576
Subject(s) - prussian blue , pillar , doping , materials science , redox , ion , sodium , porosity , transition metal , chemical engineering , electrode , metal , chemistry , inorganic chemistry , electrochemistry , optoelectronics , metallurgy , composite material , catalysis , engineering , organic chemistry , biochemistry , structural engineering
Summary Prussian blue analogues (PBA) are attractive positive electrode for sodium ion batteries due to their large interstitial sites and three‐dimensional porous framework. However, they often suffer from irreversible phase transition upon charging and discharging, leading to fast capacity decay. In consideration that redox couples of Co 2+ /Co 3+ , Ni 2+ /Ni 3+ and Fe 2+ /Fe 3+ guarantee high capacity (~150 mA h g −1 ), and Cu serves as a pillar to hold the PBA framework, here we synthesized a series of Cu, Co and Ni co‐doped PBA, displaying high capacity and stable cycling performance with >98% capacity retention after 50 cycles.