Potassium Prussian Blue Nanoparticles: A Low-Cost Cathode Material for Potassium-Ion Batteries

Structure optimization of Prussian blue analogue cathode materials for advanced sodium ion batteries.

A structure optimized Prussian blue analogue Na1.76Ni0.12Mn0.88[Fe(CN)6]0.98 (PBMN) is synthesized and investigated. Coexistence of inactive Ni(2+) (Fe-C≡N-Ni group) with active Mn(2+/3+) (Fe-C≡N-Mn group) balances the structural disturbances caused by the redox reactions. This cathode material exhibits particularly excellent cycle life with high capacity (118.2 mA h g(-1)).

Supporting Information Prussian Blue without Coordinated Water as Superior Cathode for Sodium-Ion Batteries

room temperature and then maintained at 80°C for 3 h to form micro-cubic PB particles. The solid product was collected by centrifugation and washed six times with Milli-Q water. The final PB product was then dried in a vacuum oven. The GO was synthesised by a modified Hummer's method. [1] To prepare GOPCs, the GO and PB were stirred together in an aqueous solution to form slurries with differen...

Crystallite Size Control of Prussian White Analogues for Nonaqueous Potassium-Ion Batteries

Nonaqueous potassium-ion batteries have emerged as possible lowcost alternatives to Li-ion batteries for large-scale energy storage, owing to their ability to use graphitic carbon as the negative electrode. Positive electrode materials remain a challenge. Here, we report control of the crystal dimensions of the Prussian white hexacyanoferrate (HCF), K1.7Fe[Fe(CN)6]0.9, using solution chemistry ...

C/Li2MnSiO4 Nanocomposite Cathode Material for Li-Ion Batteries

Cathode Material with Superior Rate Capability for Na-Ion Batteries

Dr. L. Liu, Prof. X. Li, Dr. S.-H. Bo, Dr. Y. Wang, Dr. N. Twu, Prof. G. Ceder Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge , MA 02139 , USA E-mail: [email protected] Prof. X. Li John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge , MA 02138 , USA Prof. H. Chen The Woodruff School of Mechanical Engineering Georg...