Surface modified and size-controlled octahedral Cu2O nanostructured electrodes for lithium-ion batteries

The Synergetic Effect Induced High Electrochemical Performance of CuO/Cu2O/Cu Nanocomposites as Lithium-Ion Battery Anodes

“…The Coulombic efficiency increased to 98% in the second cycle and was maintained near 100% in the following cycles. Furthermore, the reversible capacity of 1,265.7 mAh/g after 200 cycles was obtained, which is the highest of all reported results as far as we know (Huang et al, 2011;Mai et al, 2011;Shen et al, 2013;Zhang et al, 2013;Wang et al, 2014a;Wang et al, 2014b;Zhou et al, 2014;Chen et al, 2015;Xu et al, 2015;Ananya et al, 2016;Shi et al, 2016;Xu et al, 2016;Yuan et al, 2017;Wu et al, 2018;Kim et al, 2019;Xu et al, 2019;Yuan et al, 2019;Pan et al, 2020;Trukawka et al, 2021;Zhang et al, 2021). The jumps in the cycle curves at the 155th and 65th cycles for CuO nanowires and CuO/Cu 2 O/Cu nanocomposites were caused by the interruption of electrical power.…”

“…To solve these problems, many different kinds of nanostructures and morphologies were designed and prepared by many kinds of methods (Wang et al, 2014;Wang et al, 2014;Xu et al, 2016;Kim et al, 2019;Yuan et al, 2019;Zhang et al, 2021). Zhang et al (2013) synthesized porous CuO nanosphere film which was used as anodes, exhibiting a high reversible discharge capacity of 799.7 mAh/g.…”

Curtailing the Overpotential of Li–CO2 Batteries with Shape‐Controlled Cu2O as Cathode: Effect of Illuminating the Cathode

“…[15,16] In particular,surface-modified octahedral Cu 2 Oh as been used as an egative electrode in LIBs and shows high specific capacity as well as good rate and long-term cycle performance. [17] In the attempt of addressing the issue of sluggish oxygen reactions in MABs, Cu 2 Oa nd carbon composites have been utilized to address the issue of sluggish oxygen reactions in MABs, and results showed that they can limit the cycling voltage to 2.5 and 3.7 Ve ven after 100 cycles. [18] Metal nanoparticles,s uch as Ru nanoparticle, offer ac arbon-assisted route of Li 2 CO 3 decomposition that protects the electrolyte from degradation in LCOs.…”

An investigation of photovoltaic devices based onp‐typeCu2Oandn‐typeγ‐WO3junction through an electrolyte solution containing a redox pair

“…Unfortunately, the control of a p–n heterojunction by synthesis in solution is more complex. The literature has reported several methods for the synthesis of Cu 2 O thin films, which could be organized in non‐wet methods such as thermal oxidation, 43 chemical vapor, 44 and pulsed laser depositions, 45 spray pyrolysis, 46 and magnetron reactive sputtering, as well as wet methods, including 47 sol‐gel, 48 hydrothermal treatment, 49 dip‐coating, 20 and electrochemical deposition 50 . A device configured with the junction of two semiconductors through a solution would allow the assembly of devices with prepared films using any of the techniques listed.…”

“…15 Besides, this oxide is a p-type semiconductor with a band gap energy (E bg ) of about 2.2 eV, terrestrial abundance, low cost, and non-toxicity. 16,17 The application of Cu 2 O includes biosensors, 18 lithium-ion batteries, 19,20 photoluminescence, 21 electrocatalytic and glucose sensors, 22,23 photocatalyst for hydrogen evolution reaction, 24,25 and photoelectrochemical sensors. 26 Some studies have also been conducted with Cu 2 O films for photovoltaic devices.…”