Cathode Properties of Perovskite-type NaMF3 (M= Fe, Mn, and Co) Prepared by Mechanical Ball Milling for Sodium-ion Battery

Synthesis of Sodium Cobalt Fluoride/Reduced Graphene Oxide (NaCoF3/rGO) Nanocomposites and Investigation of Their Electrochemical Properties as Cathodes for Li-Ion Batteries

“…Studies have reported the use of ball milling and roll-quenching processes for the preparation of nanosized NaMF 3 [ 22 , 33 , 34 ]. However, the NPs formed using these methods are not uniformly sized.…”

“…When the size of particles is not uniform, the active materials of the electrode layer show non-uniform reaction kinetics, resulting in low capacity under high current densities [ 35 ]. When the capacity of ball-milling synthesized NaFeF 3 was tested in a SIB, the electrode delivered a capacity of 169 mAh·g −1 in the potential range of 2–4.3 V [ 33 ]. However, it resulted in high charge/discharge polarization and poor cycle stability.…”

Morphology control and interface characteristics of well-dispersed nanomaterials in K-ion batteries

“…However, in LIBs and sodium-ion batteries (NIBs), transition metal binary uorides could not be used as cathodes against a pristine carbonaceous anode, because of the lack of lithium or sodium for the current carrier. [3][4][5] In view of this, a lithium/sodium containing cathode is more practical. The perovskite uorides (AMF 3 , A ¼ Li, Na, etc.…”

Insight into the diffusion mechanism of sodium ion–polaron complexes in orthorhombic P2 layered cathode oxide NaxMnO2

“…The apparent explanation is that sodium ions can diffuse easily inside the materials even though it possesses a larger ionic radius and atomic weight (r Na = 0.98 Å, m Na = 23 g mol À1 ) compared with those of lithium (r Li = 0.69 Å, m Li = 6.9 g mol À1 ). 4 In structure, three indispensable components of any rechargeable batteries are cathode, [5][6][7][8][9][10][11][12][13][14][15][16][17][18] anode 19,20 and electrolyte, 21,22 in which the cathode primarily determines the overall cell voltage. Among the materials for cathode, layered oxides A x MO 2 (where A stands for alkali metal with concentration of x, and M represents transition metals such as Mn, Fe, Ni, and Co) are in the spotlight as the most promising alternatives with high voltage (2.0-3.5 V) and capacity (150-210 mA h g À1 ) for both LIBs and SIBs.…”