Yucca fern shaped CuO nanowires on Cu foam for remitting capacity fading of Li-ion battery anodes

Abstract

To remit capacity fading of lithium ion battery (LIB) anodes, freestanding yucca fern shaped CuO nanowires (NWs) on Cu foams are fabricated as anodes by combining facile and scalable anodization of copper foams followed by calcination. The porous and radial configuration of the hierarchical CuO NWs on the Cu foam substrate guarantees the remarkably improved electrochemical performance with durable cycle stability and excellent rate capability compared with CuO NWs on Cu foils. The reversible capacity remains 461.5 mAh/g after 100 repeated cycles at a current density of 100 mA/g, and a capacity of 150.6 mAh/g even at a high rate of 1000 mA/g. By examining the surface morphology of the cycled samples, possible performance fading route is proposed. The 3D CuO NWs network with a porous architecture simutaneously reduces the ion diffusion distances, promotes the electrolyte permeation and electronic conductivity. This novel strategy might open a new window to develop durable CuO based composite anodes for LIBs.

Metal–Organic Framework‐Derived Co3V2O8@CuV2O6 Hybrid Architecture as a Multifunctional Binder‐Free Electrode for Li‐Ion Batteries and Hybrid Supercapacitors

“…[ 19 ] Another two peaks obtained at 2.15 and 0.74 V were assigned to the formation of Li x CuO, followed by further conversion into Cu(0), and the formation of a solid electrolyte interphase (SEI) membrane. [ 20 ] The peak centered at 1.3 V reflects the disintegration of CuV 2 O 6 to Li x V 2 O 5 . Nevertheless, only two peaks were observed in the anodic scan at 1.32 and 2.42 V; these peaks were accredited to the deinsertion of Li ions from Li x V 2 O 5 and re‐oxidation of Co to CoO.…”

Hierarchically Porous Carbon Derived from Biomass Reed Flowers as Highly Stable Li-Ion Battery Anode

“…The property of an anode material has a significant effect on the final performances of a total LIB. At present, anode materials mainly include conversion reaction type, alloy-type, and carbonaceous materials [6][7][8][9]. However, the applications of both conversion-reaction-type and alloy-type anodes are restricted by their low conductivity and serious volume expansion during cycling [10][11][12][13].…”

A Hierarchical Copper Oxide–Germanium Hybrid Film for High Areal Capacity Lithium Ion Batteries

“…These reduction peaks shifted toward slightly higher voltages in the following scans, which might associate with the drastic Li driven structural modifications during the initial discharge and charge process (Yunhua et al, 2014). A peak was found at 0.44 V during the first anodic scan, attributing to the phase transition of Li x Ge to Ge; then, two distinct peaks at ∼1.5 and ∼2.5 V and a shoulder peak at ∼2.7 V appeared, which was associated with oxidation of Cu 0 to Cu + and Cu 2+ (Dong et al, 2016;Xu et al, 2016;Wang et al, 2018). These results are in agreement with the other reports of electrochemical reactions of Ge and CuO with Li (Seo et al, 2011;Ren et al, 2013;Xinghui et al, 2014;Wei et al, 2017;Lin et al, 2018;Wang et al, 2018).…”

“…Wang et al fabricated self-supported CuO nanowires (NWs) on Cu foam (CF). The obtained electrodes delivered a specific capacity of 461.5 mA h g −1 after 100 cycles at a current density of 100 mA g −1 , and a capacity of 150.6 mA h g −1 even at a high rate of 1,000 mA g −1 (Wang et al, 2018).…”