MgFe2O4/reduced graphene oxide composites as high-performance anode materials for sodium ion batteries

Recent Progress in Iron‐Based Electrode Materials for Grid‐Scale Sodium‐Ion Batteries

“…Other anode materials, such as FeOOH and MFe 2 O 4 (M = Cu, Co, Mg), were also reported; they exhibited similar conversion reaction mechanisms, but their cycling stability needed to be improved. In addition, the FeO x and FeS x materials have been introduced to the carbon matrix as internal polysulfide reservoirs in lithium sulfur batteries, which reduces the shuttle effect and thus leads to improved electrochemical performance …”

Improved sodium-ion storage performance of TiO2nanotubes by Ni2+doping

“…[10][11][12][13][14][15] Recently, some significant studies for SIBs have been 35 reported for developing electrode materials with satisfied electrochemical performance. [17][18][19][20][21] For anode materials, carbonbased materials, especially hard carbon and partially graphitic materials, show excellent sodium-ion storage performance. 19, [22][23][24] However, the sodiation-desodiation process of carbon materials 40 happens mainly below 0.1 V, 25,26 where sodium dendrite will grow abundantly, thus leading to the safety problems.…”

MgFe 2 O 4 hollow microboxes derived from metal-organic-frameworks as anode material for sodium-ion batteries

“…A semicircle in the small high-frequency region represents the SEI layer resistance (R f ) and the other semicircle in the medium frequency region denotes charge transfer resistance (R ct ). A sloping line in the low-frequency region referred as the impedance ascribed to the Na + diffusion (Z w ) [13,16]. It can be seen that both sample A and sample B are diffraction resistance predominated process.…”

“…2a shows the representative discharge-charge curves of the sample A (7:2:1) at 50 mA g À1 . Two potential plateaus (0.75 and 0.55 V) of the electrode are delivered in the initial discharge process, which results from the formation of the solid electrolyte interface (SEI) film and the reduction of Fe 3+ to Fe 0 , respectively [13]. The initial discharge/charge capacities are 406/207 mA h g À1 with a coulombic efficiency of 51%.…”