Zampardi Giorgia, Sokolov Stanislav V, Batchelor-McAuley Christopher, Compton Richard G
Department of Chemistry, Physical and Theoretical Chemistry Laboratory (PTCL), University of Oxford, South Parks Road, OX1 3QZ, Oxford, UK.
Chemistry. 2017 Oct 12;23(57):14338-14344. doi: 10.1002/chem.201703175. Epub 2017 Sep 12.
Potassium (de-)insertion from Prussian blue (PB) is investigated at the single and multi-particle scale. The electrochemical behaviour is found to differ between the two measurement types. At the single particle level, oxidation of the PB nanoparticles with concomitant K deinsertion occurs more readily than the associated reduction, relating to K insertion. In contrast, the cyclic voltammetry of PB in a composite electrode containing conductive additives and polymeric binder suggests the opposite behaviour. Implications for assessing battery materials are discussed.
在单粒子和多粒子尺度上研究了普鲁士蓝（PB）中钾的（脱）嵌入。发现两种测量类型的电化学行为有所不同。在单粒子水平上，PB纳米颗粒的氧化以及伴随的钾脱嵌比相关的还原（即钾嵌入）更容易发生。相比之下，含有导电添加剂和聚合物粘合剂的复合电极中PB的循环伏安法显示出相反的行为。讨论了对评估电池材料的影响。
