Cited 0 time in
Cited 0 time in
Potassium nickel hexacyanoferrate as a high-voltage cathode material for nonaqueous magnesium-ion batteries
- Potassium nickel hexacyanoferrate as a high-voltage cathode material for nonaqueous magnesium-ion batteries
- Chae, Mun-Seok; Hyoung, Joo-Eun; Jang, Min-Chul; Lee, Ho-Chun; Hong, Seung-Tae
- DGIST Authors
- Chae, Mun-Seok; Hyoung, Joo-Eun; Lee, Ho-Chun; Hong, Seung-Tae
- Issue Date
- Journal of Power Sources, 363, 269-276
- Article Type
- Anodes; Aqueous-Electrolytes; Battery; Challenges; Crystal Structure; Crystal-Structure; Electrodes; Electrolyte; Future; Insertion; Key; Magnesium-Ion; Magnesium-Ion Battery; Mg2+ Intercalation; Multivalent-Ion Battery; Nonaqueous; Nonaqueous Electrolyte; Potassium Nickel Hexacyanoferrate; Prussian Blue Analog; Prussian Blue Analogue; Rechargeable Lithium Batteries
- The magnesium insertion capability of Prussian blue (PB) analogue, potassium nickel hexacyanoferrate K0.86Ni[Fe(CN)6]0.954(H2O)0.766 (KNF-086), is demonstrated as a cathode material for rechargeable magnesium-ion batteries using a conventional organic electrolyte. K1.51Ni[Fe(CN)6]0.954(H2O)0.766 is synthesized first, and potassium ions are electrochemically extracted to prepare the KNF-086 cathode. The electrochemical test cell is composed of KNF-086 as the working electrode, an activated carbon as the counter and reference electrode, and 0.5 M Mg(ClO4)2 in acetonitrile as the electrolyte. The cell shows a reversible magnesium insertion/extraction reaction with a discharge capacity of 48.3 mAh g−1 at a 0.2 C rate, and an average discharge voltage at 2.99 V (vs. Mg/Mg2+) that is the highest among the cathode materials ever reported for magnesium-ion batteries. Elemental analysis and Fourier electron-density map analysis from powder X-ray diffraction data confirm that the magnesium-inserted phase is Mg0.27K0.86Ni[Fe(CN)6]0.954(H2O)0.766 (MKNF-086), and the magnesium ions in MKNF-086 are positioned at the center of the large interstitial cavities of cubic PB. Compared to KNF-086, MKNF-086 exhibits a decreased unit cell parameter (0.8%) and volume (2.4%). These results demonstrate that a PB analogue, potassium nickel hexacyanoferrate, could be utilized as a potential cathode material for conventional organic electrolyte-based magnesium-ion batteries. © 2017 Elsevier B.V.
- Elsevier B.V.
- Related Researcher
Hong, Seung Tae
Discovery Lab(Batteries & Materials Discovery Laboratory)
Magnesium, sodium and lithium ion rechargeable batteries; New inorganic materials discovery; Solid state chemistry; Crystallography; Mg, Na, Li 이온 이차전지; 신 무기재료 합성; 고체화학; 결정화학
There are no files associated with this item.
- Energy Science and EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles
Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.