Facile synthesis of porous Co3O4 nanosheets containing abundant oxygen vacancies for boosted lithium-ion storage

Ultrathin nanosheet-decorated honeycomb-like Co3O4 porous balls for high performance lithium-ion batteries

“…1b displays five characteristic peaks observed at 193, 471, 514, 608, and 672 cm −1 , which correspond to the vibrational modes of F 1 2g , E g , F 2 2g , F 3 2g , and A 1g of crystalline Co 3 O 4 , respectively. 11 These findings align well with the expected vibrational modes of Co 3 O 4 , indicating a high degree of consistency in the obtained results. In this investigation, we analyzed the thermal transformation behavior of the Co 3 O 4 precursor using thermogravimetric analysis (TGA) and present our results in Fig.…”

“…These factors ultimately contribute to improved cycling stability and rate capacity. To validate this hypothesis, diverse nanostructures have been scrutinized, including nanorods, 10 nanosheets, 11 nanofoils, 12 nanoflowers, 13 and nanoballs. 14,15 Among them, the hierarchically porous unique nanostructure has been proposed as an efficacious structure that provides the material with an abundance of active sites and ample routes for ion/ electron diffusion.…”

Synergistic effect between ZnCo2O4 and Co3O4 induces superior electrochemical performance as anodes for lithium-ion batteries

“…42,43 Typically, the relationship between the measured peak current ( i ) and scan rate ( v ) can be expressed using eqn (vii) and (viii). i = av b log( i ) = log( a ) + b log( v )Here, ‘ a ’ and ‘ b ’ refer to adjustable empirical constants. 44,45 The ‘ b ’ values can be obtained from the slope of the linear relationship between log( i ) and log( v ), as shown in Fig. 5(d)–(f).…”

“…Here, 'a' and 'b' refer to adjustable empirical constants. 44,45 The 'b' values can be obtained from the slope of the linear relationship between log(i) and log(v), as shown in Fig. 5(d)-(f).…”

“…However, if the 'b' values are close to or equal to 1, the electrode will exhibit ideal surface-induced capacitive behavior. 45,46 The 'b' values were calculated after plotting the graph between log(i) versus log(v) for all the three electrodes during anodic and cathodic processes and were calculated to be B0. 844 Thereafter, the contribution ratios of diffusion-controlled and surface-controlled capacitive mechanisms were quantified using following equations: 45,47 i(…”