Structural engineering of bimetal-organic framework via a direct etching method and conversion to phosphide for electrochemical capacitors

Modified KBBF-like Material for Energy Storage Applications: ZnNiBO3(OH) with Enhanced Cycle Life

“…The peak current for both oxidation and reduction were plotted against the square root of the scan rates (Figure S8a–c) and scan rates (Figure S8d–f) to determine if the charge transfer was due to diffusion or was kinetic-controlled. All the plots for the redox peak current vs square root of the scan rates were fitted into a linear function which confirms a diffusion-dominated phenomenon. , To understand the charge storage mechanism in more detail, the CVs of ZNBH, NH, and ZO were fitted by using the power law (eq ) where i is current, c and b are adjustable parameters: The detailed capacitance contribution calculation is given in the SI of our previous works. , If the b value is ∼0.5, then the capacity response is diffusion dominated (battery-type behavior). If the b value is ∼1, then it shows capacitive response (surface reactions).…”

“…All the plots for the redox peak current vs square root of the scan rates were fitted into a linear function which confirms a diffusion-dominated phenomenon. 42,54 To understand the charge storage mechanism in more detail, the CVs of ZNBH, NH, and ZO were fitted by using the power law (eq 4) where i is current, c and b are adjustable parameters: 55…”

Metal Phosphides as Promising Electrode Materials for Alkali Metal Ion Batteries and Supercapacitors: A Review

“…ZCP‐H has the highest specific capacitance and rate performance of the three (1026 F g −1 at 2 A g −1 ), and its ASC device displayed high energy and power densities (45.7 Wh kg −1 and 35 Wh kg −1 at 900 W kg −1 and 1700 W kg −1 , respectively), and outstanding cycle stability with capacity loss of 0.7% after 5000 cycles. [ 198 ] These two reports may inspire researchers to make further improvements of Zn‐Co‐P bimetal phosphide pseudocapacitance material due to the much lower cost of zinc than nickel and the comparable performance of ZnCoP to NiCoP.…”

Recent advances in oriented metal–organic frameworks for supercapacitive energy storage

“…Therefore, much effort has been devoted to transforming the fossil-based economy into a green energy-based economy. 1–5 Much effort has been devoted to developing renewable energy sources including solar, wind, hydro, and so on. 6–8 However, the intermittent supply of energy from the aforementioned technologies requires advanced energy storage devices which store excess energy and deliver at the time of need.…”