Saeed Saeed, Boyd Shelby, Tsai Wan-Yu, Wang Ruocun, Balke Nina, Augustyn Veronica
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC 27695, USA.
Chemical Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, USA.
Chem Commun (Camb). 2021 Jul 14;57(55):6744-6747. doi: 10.1039/d1cc01681d. Epub 2021 Jun 17.
Alkali ion insertion into Prussian blue from aqueous electrolytes is characterized with operando AFM and EQCM, showing coupling of current with deformation and mass change rates. Stable cycling occurs only with K, attributed to its lower hydration energy. The (de)insertion of K results in reversible deformation even in the open framework structure.
从水性电解质中将碱金属离子插入普鲁士蓝，通过原位原子力显微镜（AFM）和石英晶体微天平（EQCM）进行表征，结果表明电流与形变率和质量变化率之间存在耦合关系。只有钾离子能实现稳定循环，这归因于其较低的水合能。即使在开放框架结构中，钾离子的嵌入和脱嵌也会导致可逆形变。
