Cobalt‐doped layered lithium nickel oxide as a three‐in‐one electrode for lithium‐ion and sodium‐ion batteries and supercapacitor applications

Investigation of Ti‐substitution effects on structural and electrochemical properties of Na 0. 67 Mn 0 . 5 Fe 0 . 5 O 2 battery Altın1, Altundağ2, Altın3 et al. 2020Int J Energy Res7010View full textAdd to dashboardCite

“…The best battery performance was obtained for x = 0.07 Ti-substituted sample, and the CV of x = 0.07 for different scan rates was presented in Figure 6B. The diffusion coefficient can be calculated using Randles-Sevcik equation as given below 50,51 :…”

“…The best battery performance was obtained for x = 0.07 Ti‐substituted sample, and the CV of x = 0.07 for different scan rates was presented in Figure 6B. The diffusion coefficient can be calculated using Randles‐Sevcik equation as given below 50,51 : where n is the number of electrons, A is the surface area obtained from BET analysis as 0.68 m 2 /g, D is the diffusion coefficient of Na + ions, C Na is the concentration of Na ions in the Cathode, and v is the scan rate. The peak values in the CV measurements were determined depending on the scanning rate, as given in the inset of Figure 6B, and the D value was calculated from the slope of the data that was found to be 1.3 × 10 −9 cm 2 /s.…”

Study on synthesis of spinel LiNi 0 . 5 Mn 1 . 5 O 4 cathode material and its electrochemical properties by two‐stage roasting

“…With the globalization of economic development and the improvement of energy supply, finding new energy storage devices has become focused attention of the new energy technology industry. [1][2][3][4][5][6][7][8][9][10] Lithium-ion battery (LIB) is the best comprehensive rechargeable battery system software at this stage. 3,[11][12][13][14][15][16][17][18][19][20][21][22][23] At present, LIB is mainly used in mobile electronic equipment, and its application has begun to develop to the small size and lightweight of microelectrical appliances, as well as large electric equipment.…”

Revealing the sodium‐storage performance enhancement of adsorption‐type carbon materials after ammonia treatment: Active nitrogen dopants or specific surface area?

“…Sodium ions offer a smaller desolvation energy (118.1‐186.3 kJ mol −1 ) compared to that of lithium ions (160.7‐254.1 kJ mol −1 ), 12 thus facilitating the ion transport across the electrode‐electrolyte interface. Therefore, sodium ions show great promises as charge carriers to achieve fast energy storage 13‐17 . Moreover, using adsorption‐type sodium storage materials can shorten the ion diffusion path by achieving sodium storage on the surface, precluding the sodium‐ion insertion and diffusion in interlayers, thus further enhancing the sodium storage kinetics.…”

“…Therefore, sodium ions show great promises as charge carriers to achieve fast energy storage. [13][14][15][16][17] Moreover, using adsorption-type sodium storage materials can shorten the ion diffusion path by achieving sodium storage on the surface, precluding the sodium-ion insertion and diffusion in interlayers, thus further enhancing the sodium storage kinetics.…”