Effect of the reactants concentration on the synthesis and cycle life of copper hexacyanoferrate for aqueous Zn-ion batteries

Highly Efficient, Dendrite‐Free Zinc Electrodeposition in Mild Aqueous Zinc‐Ion Batteries through Indium‐Based Substrates

“…In other words, the incremental zinc loss is an estimation of the amount of metallic zinc that has to be placed within an aqueous Zn‐ion battery to act as a reservoir in order to ensure the battery operation for a specified number of cycles. Considering that usually the positive electrode's materials for aqueous Zn‐ion batteries have a Coulombic efficiency close to 100 %, [48] it is the Coulombic efficiency of the negative electrode the real bottleneck that dictates the amount of metallic zinc needed as a reservoir in the final aqueous Zn‐ion cell. The calculated incremental Zn loss of all the electrodes used as the substrate for the Zn electrodeposition‐dissolution reaction within the frame of this work is shown in Figure 5(c).…”

Open challenges and good experimental practices in the research field of aqueous Zn-ion batteries

“…However, it is generally known that the higher the C-rate, the slower the aging processes of an insertion material 9 , 20 , 21 . In order to collect non-misleading and meaningful results on a realistic estimation of the cycle life of anode and cathode materials, it is critical to choose a 1 C rate for the aging test, as this mimics the rate required for aqueous ZIBs intended to be used as storage devices for the power grid.…”

“…In order to demonstrate the reproducibility of the electrochemical results disclosed in a scientific report or publication, the defining cycling performance characteristics of a material (such as specific capacity, capacity retention, Coulombic efficiency, etc.) should be always reported with mean values and standard deviations averaged over at least three different experiments 21 . In this way, the reproducibility of the acquired measurements would be clearly demonstrated and not only claimed.…”

Formation of Mn–Ni Prussian Blue Analogue Spheres as a Superior Cathode Material for Potassium-Ion Batteries

“…Prussian blue analogues (PBAs), whose molecular formula can be simply expressed as A x M 1 [M 2 (CN) 6 ] y · z H 2 O (A represents alkaline ions and M represents transition metals), have attracted widespread interest owing to their three-dimensional (3D) open framework that can accommodate large K ions. − Additionally, PBAs show a clear preference for K + , as to the appropriate ionic radius of K + stabilizes the structure, which leads to a better cycling performance than LIBs and SIBs. , After Eftekhari first reported KFeFe­(CN) 6 with a discharge capacity of 75 mAh g –1 in 2004, researchers have done a lot to further optimize the electrochemical performance of PBAs . Among various types of PBAs, manganese hexacyanoferrate shows the greatest potential due to its highest capacity and operating voltage, abundant elements, and easy synthesis .…”