Prussian Blue Analogues in Aqueous Batteries and Desalination Batteries

In the applications of large-scale energy storage,aqueous batteries are considered as rivals for organic batteries due to their environmentally friendly and low-cost nature.However,carrier ions always exhibit huge hydrated radius in aqueous electrolyte,which brings difficulty to find suitable host materials that can achieve highly reversible insertion and extraction of cations.Owing to open threedimensional rigid framework and facile synthesis,Prussian blue analogues(PBAs)receive the most extensive attention among various host candidates in aqueous system.Herein,a comprehensive review on recent progresses of PBAs in aqueous batteries is presented.Based on the application in different aqueous systems,the relationship between electrochemical behaviors(redox potential,capacity,cycling stability and rate performance)and structural characteristics(preparation method,structure type,particle size,morphology,crystallinity,defect,metal atom in highspin state and chemical composition)is analyzed and summarized thoroughly.It can be concluded that the required type of PBAs is different for various carrier ions.In particular,the desalination batteries worked with the same mechanism as aqueous batteries are also discussed in detail to introduce the application of PBAs in aqueous systems comprehensively.This report can help the readers to understand the relationship between physical/chemical characteristics and electrochemical properties for PBAs and find a way to fabricate high-performance PBAs in aqueous batteries and desalination batteries.

Correction to:Prussian Blue Analogues in Aqueous Batteries and Desalination Batteries

Correction to:Nano‑Micro Lett.(2021)13:166 https://doi.org/10.1007/s40820-021-00700-9 In the published article the authors equal contribution statement is incorrect in the foot note.The correct statement should be read as“Chiwei Xu and Zhengwei Yang have contributed equally to this work”.

Graphene and boron nitride foams for smart functional applications

Graphene and boron nitride(BN)foams,as two types of three-dimensional(3D)nanomaterials consisting of two-dimensional(2D)nanosheets,can inherit a series of excellent properties of the 2D individuals.The internal 3D network can prevent aggregation or restacking between isolated graphene or BN nanosheets,and provide a highway for phonon/electron transports.Moreover,the interconnected porous structure creates a continual channel for the mass exchange of exotic species.The light-element graphene and BN foams can thus possess the characteristics of low density,high porosity,high surface area,and excellent mechanical,thermal,and electrical properties.Benefiting from these advantages,they show a wide range of applications.The usual synthesis methods and the recent functional applications of graphene and BN foams are reviewed herein,including their applications as supporting materials,elastic materials,acoustic shielding materials,thermal interface materials,electromagnetic shielding materials,adsorption materials,electrocatalysis and thermal catalyses materials,electrochemical energy storage,and thermal energy storage materials.Current challenges and outlooks are additionally discussed.