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An All‐Prussian‐Blue‐Based Aqueous Sodium‐Ion Battery
Author(s) -
Wang Baoqi,
Wang Xiao,
Liang Chu,
Yan Mi,
Jiang Yinzhu
Publication year - 2019
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201901223
Subject(s) - prussian blue , cathode , anode , battery (electricity) , electrochemistry , electrolyte , aqueous solution , energy storage , potassium ion battery , materials science , sodium , inorganic chemistry , sodium ion battery , environmentally friendly , chemical engineering , chemistry , electrode , metallurgy , lithium vanadium phosphate battery , engineering , organic chemistry , ecology , power (physics) , physics , quantum mechanics , biology , faraday efficiency
Aqueous rechargeable sodium‐ion batteries have received great attention as an alternative to meet the growing demand of large‐scale electrochemical energy storage systems due to the earth‐abundant and low‐cost sodium resources. In this study, an all Prussian‐blue‐based aqueous sodium‐ion battery is constructed using copper and iron‐based Prussian blue analogues as cathode and anode, respectively, and neutral NaNO 3 solution as electrolyte. The battery delivers an average output voltage of 0.70 V, a specific capacity of 50 mAh g −1 , and good rate capability with ∼86 % capacity retention over 250 cycles at 5 C. Moreover, the cathode, anode, and electrolyte materials are inexpensive, environmentally friendly, and inherently safe, which is particularly attractive for large‐scale energy storage applications.