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Crystals 2018, 8(1), 23; doi:10.3390/cryst8010023

Prussian Blue Analogue Mesoframes for Enhanced Aqueous Sodium-ion Storage

School of Physics and Materials Science, East China Normal University, Shanghai 200241, China
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Received: 24 November 2017 / Revised: 22 December 2017 / Accepted: 3 January 2018 / Published: 7 January 2018
(This article belongs to the Special Issue Structural Design and Properties of Coordination Polymers)
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Abstract

Mesostructure engineering is a potential avenue towards the property control of coordination polymers in addition to the traditional structure design on an atomic/molecular scale. Mesoframes, as a class of mesostructures, have short diffusion pathways for guest species and thus can be an ideal platform for fast storage of guest ions. We report a synthesis of Prussian Blue analogue mesoframes by top-down etching of cubic crystals. Scanning and transmission electron microscopy revealed that the surfaces of the cubic crystals were selectively removed by HCl, leaving the corners, edges, and the cores connected together. The mesoframes were used as a host for the reversible insertion of sodium ions with the help of electrochemistry. The electrochemical intercalation/de-intercalation of Na+ ions in the mesoframes was highly reversible even at a high rate (166.7 C), suggesting that the mesoframes could be a promising cathode material for aqueous sodium ion batteries with excellent rate performance and cycling stability. View Full-Text
Keywords: Prussian Blue analogue; mesoframe; aqueous sodium ion battery Prussian Blue analogue; mesoframe; aqueous sodium ion battery
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sun, H.; Zhang, W.; Hu, M. Prussian Blue Analogue Mesoframes for Enhanced Aqueous Sodium-ion Storage. Crystals 2018, 8, 23.

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