High-capacity sodium ion battery anodes based on CuO nanosheets and carboxymethyl cellulose binder

Comparative Study on the Morphology-Dependent Performance of Various CuO Nanostructures as Anode Materials for Sodium-Ion Batteries

“…For all the CuO nanostructures, the Cu 2p XPS spectra show two distinct peaks located around 935 and 955 eV, corresponding to the Cu 2p 3/2 and Cu 2p 1/2 states due to the oxidized copper(II) species. The presence of the shakeup satellite peaks around 943 eV and the single satellite peak at 963 eV are the evidence of 3d 9 shell of the Cu 2+ state. The difference in spin−orbit coupling energy of the Cu 2p 3/2 and Cu 2p 1/2 states was found to be around 20 eV, indicative of Cu 2+ oxidation state.…”

“…8 Fan et al synthesized the CuO nanosheet based electrode using carboxymethyl cellulose as the binder and obtained a high reversible capacity of 627 mAh g −1 at 50 mA g −1 . 9 This electrode also delivered a reversible capacity of 210 mA h g −1 after 300 cycles at a high current density of 2000 mA g −1 . Komaba et al prepared nanocrystalline Fe 3 O 4 and α-Fe 2 O 3 with capacity retention of 160 and 170 mA h g −1 , respectively.…”

Fabrication of Na‐Ion Full‐Cells using Carbon‐Coated Na3V2(PO4)2O2F Cathode with Conversion Type CuO Nanoparticles from Spent Li‐Ion Batteries

“…The half‐cell performances indicate dominance in performance for CuO–C over CuO–P and faster stabilization. The CMC binder has a crucial role in maintaining the whole structure of the electrode by preventing cracks in the electrode itself and preserving the electrode‐current collector contact [ 22 ] . This implies that CMC is more effective than PVDF in curbing the volume expansion and associated issues arising from the conversion or alloying‐based anodes [ 25 ] .…”

“…Our process qualifies as an ideal recycling process since it does not involve any high cost, high purity chemicals, the requirement of an inert atmosphere, or sensitive techniques. Fan et al [ 22 ] studied the performance dependence of CuO nanosheets on binders, viz. PVDF and CMC, where CMC was shown to exhibit better performance in all electrochemical tests.…”

Editorial (horizon of next generation energy storage materials and devices)

“…Coupled with use of carboxymethyl cellulose binder, CuO demonstrates excellent Na-ion storage capacity. On the other hand, if CuO is used with poly (vinylidene) fluoride as a binder, capacity of CuO shows quickly fade [3]. Carbon is always a primary consideration as anode in many batteries due to high capacity and cost effective.…”