Self-assembled sandwich-like NiO film and its application for Li-ion batteries

Nanogravel structured NiO/Ni foam as electrode for high-performance lithium-ion batteries

“…6 Cross-sectional SEM images and EDX spectra of Ni foams after oxidation at 1200°C: a, c, e after single-step oxidation and b, d, f after two-step oxidation Ionics nanograveled NiO/Ni electrodes cycled at high discharge rates of 2.5 C indicates that the internal resistance of this cell is large [51]. Subsequently, it is observed that the reversible discharge capacity gradually increased to 1026.20 mA h g −1 at 40th cycles with a coulombic efficiency of 100.25 %, which reveals excellent cyclability of electrode compared with those reported as 680 mA h g −1 after 50 cycles at 2 C rate [52], 865 mA h g −1 after 50 cycles at 1 C rate [53], and some others as reported in [54][55][56]. In addition, the as-prepared nanogravel structured NiO/Ni electrode exhibited better performances than other reported transition metal oxides electrodes, such as CuO [57], Cu 2 O [58], CoO [59,60], Co 3 O 4 [61], and Fe 2 O 3 [62,63].…”

Core–shell VPO4/C anode materials for Li ion batteries: Computational investigation and sol–gel synthesis

“…However, the theoretical capacity of graphite, the commonly used anode material, is only 372 mAh g −1 [1], much lower than those of transition-metal oxides [2]. However, oxide anode materials suffer from large volume changes during repetitive charge and discharge cycles, leading to poor cyclic stability and rate capability [3][4][5][6][7][8]. Therefore, alternatives for anode materials with higher capacity and longer cyclic life are being actively investigated.…”

Preparation of Fe2O3/graphene composite and its electrochemical performance as an anode material for lithium ion batteries

“…To meet the increasing demand for LIBs with higher energy density, various attempts to explore new electrode materials have been investigated. Recently, transition metal oxides have been studied as alternative anode materials for LIBs due to their high Li-storage capacities [1][2][3][4][5][6][7][8][9][10]. Among the various transition metal oxides, Fe 2 O 3 has attracted significant research attention due to its fascinating properties such as the high theoretical capacity (1005 mAh g −1 ), low cost and low environmental impact [11][12][13].…”