FeV₂S₄as a high capacity electrode material for sodium-ion batteries

Abstract

Iron vanadium sulfide (FeV2S4) was synthesized via a high temperature solid state reaction and was investigated as a cheap anode material for Na and Li ion batteries. Discharge capacities as high as 723 mA h g(-1) (Na) and 890 mA h g(-1) (Li) were found for half-cell measurements at room temperature. The capacity of the Na-FeV2S4 system remained constant at 529 mA h g(-1) after the 10th cycle with an area capacity of 2.7 mA h cm(-2) being very close to that of conventional Li-ion technology.

Explicating the Sodium Storage Kinetics and Redox Mechanism of Highly Pseudocapacitive Binary Transition Metal Sulfide via Operando Techniques and Ab Initio Evaluation

“…Due to this unusual advantage, the choice of adopting BMS anodes provide adequate solution platform for facilitation of much heavier Na-ions kinetics for faster rate response. Although a few pioneering research efforts has been reported with encouraging results, [16,17] the investigations of sodiation/desodiation mechanism and indepth sodium storage capability are limited and require more comprehensive analysis and understanding for the further development of effective electrode design methodologies.…”

Elucidation of the Sodium – Copper Extrusion Mechanism in CuCrS2: A High Capacity, Long‐Life Anode Material for Sodium‐Ion Batteries

“…Until now, rGO is mostly synthesised by a modified Hummers method not suitable for application on an industrial scale ,. To overcome the necessity of additives like rGO, the use of ternary, instead of binary electrode materials might be beneficial ,. Applying such compounds more phases are formed during sodiation (discharge) leading to a more finely distribution of the nano‐structured reaction products being in close contact.…”

“…[27,28] To overcome the necessity of additives like rGO, the use of ternary, instead of binary electrode materials might be beneficial. [29,30] Applying such compounds more phases are formed during sodiation (discharge) leading to a more finely distribution of the nanostructured reaction products being in close contact. Hence short diffusion pathways are generated which are beneficial for the reversibility of the chemical reactions.…”

Schwefel‐basierte Elektroden mit Mehrelektronenreaktionen für Raumtemperatur‐Natriumionenspeicherung

“…Diese Eigenschaften machen es zu einem vielversprechenden Anodenmaterial fürh ochleistungsfähige Na-Ionen-Batterien. B. CuV 2 S 4 , [31] FeV 2 S 4 [32] und Ni 3 Co 6 S 8 . Sie basiert auf der Nickelarsenidstruktur (NiAs) mit a = 3.67 , c = 5.04 , wobei die c-Schichten abwechselnd Fe 2+ -u nd S 2À -Ionen enthalten.…”