Doping-induced morphology modulation for boosting the capacity and stability of nanocrystals assembled Ni1-xCoxSe2

Design of porous Ni and rare earth metal (Ce, Ho, and Eu) Co-doped TiO2nanoarchitectures for energy conversion and storage applications

“…9(a)–(e) presents the cyclic voltammogram curves of all the active material electrodes at different scan rate ranges from 10 to 100 mV s −1 with broad redox peaks. Moreover, the cyclic voltammograms show inconspicuous change with increasing scan rates, indicating the excellent reversibility and superb electron and ion transport capabilities, 102 which further clarifies their typical faradaic battery type behavior. 103 Moreover, these results are supported by voltage plateaus as clearly observed in the non-linear GCD profiles (Fig.…”

In Situ Structural Self-Optimization and Oxygen Vacancy Creation to Boost the Stability of Bi-MOF Derived Bi2O3@C and BiOCl@C Anodes

“…Evidently, the curve is consisting of a semicircle in the high-frequency region and a straight line in the low-frequency regions. In the high-frequency region, the intercept of the curve at the real axis is only ∼1.55 Ω, representing the series resistance ( R s ), which includes the electrolyte resistance, the intrinsic resistance of the material, and the total resistance of the contact between the active material/current collector interfaces . The inconspicuous semicircle of the high-frequency region represents the charge transfer resistance ( R ct ) between the electrolyte/electrode .…”

Trace Water‐induced Morphology Engineering and Oxygen Vacancy for Enhancing the Capacity of Bi2O3 Alkaline Battery‐Anode

“…Accordingly, b value of 0.64 and 0.59 is respectively obtained based on the anode and cathode peak currents (Figure 5a), verifying that the surface‐controlled and diffusion‐controlled process both contributed to the capacity. Moreover, to precisely quantify each contribution, a new equation [Equation (6)] was derived as follows: [1c] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr i\ ({\rm V})=k{_{1}}v+k{_{2}}v{^{1/2}}\hfill\cr}}$$$ …”

“…EIS tests were performed within a frequency range of 10 −2 –10 5 Hz with a 10 mV amplitude potential. The specific capacity was calculated using the following equations: [1c] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr C{_{{\rm sp}}}=I\ \Delta t/m\ \Delta V\hfill\cr}}$$$ $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr E=1/2\mskip4mu CV{^{2}}\hfill\cr}}$$$ $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr P=E/3.6\Delta t\hfill\cr}}$$$ …”