2020
DOI: 10.1002/eem2.12108
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Insights into the Structure Stability of Prussian Blue for Aqueous Zinc Ion Batteries

Abstract: The reversible storage of Zn2+ ions in Prussian blue analogues with typical aqueous solution was challenged by fast degradation and poor coulombic efficiency, while the mechanism is yet to be uncovered. This study correlates the performance of the nickel hexacyanoferrate to the dynamics of H2O in the electrolyte and the associated phase stability of the electrode. It demonstrates severe Ni dissolution in conventional diluted aqueous electrolyte (1 m ZnSO4 or 1 m Zn(TFSI)2), leading to structure collapse with t… Show more

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Cited by 113 publications
(64 citation statements)
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References 36 publications
(46 reference statements)
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“…f) Long‐term cycling stability of Zn–I 2 batteries with starch cathodes under a high current density of 10 A g −1 . g) Literature survey of rechargeable Zn batteries: Zn 0.25 V 2 O 5 ∙nH 2 O//Zn, [ 21 ] K 1.28 Ni[Fe(CN) 6 ] 0.821 ∙2.64H 2 O//Zn, [ 22 ] LiMn 2 O 4 //Zn, [ 23 ] MnO 2 //Zn, [ 24 ] I 2 ‐NPC//Zn, [ 25 ] I 2 ‐ACC//Zn, [ 8a ] I 2 ‐C‐50//Zn, [ 8d ] H 2 O/I 2 //Zn‐BTC@Zn, [ 4a ] H 2 O/I 2 //Zn@ZIF‐8, [ 26 ] and I 2 ‐Nb 2 CTi x //Zn. [ 9 ]…”
Section: Resultsmentioning
confidence: 99%
“…f) Long‐term cycling stability of Zn–I 2 batteries with starch cathodes under a high current density of 10 A g −1 . g) Literature survey of rechargeable Zn batteries: Zn 0.25 V 2 O 5 ∙nH 2 O//Zn, [ 21 ] K 1.28 Ni[Fe(CN) 6 ] 0.821 ∙2.64H 2 O//Zn, [ 22 ] LiMn 2 O 4 //Zn, [ 23 ] MnO 2 //Zn, [ 24 ] I 2 ‐NPC//Zn, [ 25 ] I 2 ‐ACC//Zn, [ 8a ] I 2 ‐C‐50//Zn, [ 8d ] H 2 O/I 2 //Zn‐BTC@Zn, [ 4a ] H 2 O/I 2 //Zn@ZIF‐8, [ 26 ] and I 2 ‐Nb 2 CTi x //Zn. [ 9 ]…”
Section: Resultsmentioning
confidence: 99%
“…[1][2][3] The cathode in a ZIB is required to have an open structure enabling easy intercalation and deintercalation of Zn(II) ions, during discharging and charging processes, to maximize energy storage via diffusion and Faradaic mechanisms. A variety of crystalline transition metal oxides [6][7][8][9][10] and Prussian blue analogues [11][12][13][14] endowed with channel dimensions in excess of 1.5 Å [which is approximately twice the ionic radius of Zn(II) ion] have been deployed as cathodes in ZIBs.…”
Section: Introductionmentioning
confidence: 99%
“…Owing to its abundant sources and environmental friendliness, aqueous batteries with monovalent (Na + and K + ) and multivalent (Mg 2+ , Zn 2+ , and Al 3+ ) cations have gained extensive attention. [2][3][4][5][6] Zinc is a nontoxic, low-cost, and earth-abundant material (about 300 times of lithium), which has a high theoretical capacity (820 mA h g −1 ). [7][8][9][10][11] Thus, aqueous zinc-ion batteries (ZIBs) using zinc as anodes have been developed rapidly in recent years.…”
Section: Introductionmentioning
confidence: 99%