A review on selection criteria of aqueous electrolytes performance evaluation for advanced asymmetric supercapacitors

Novel Moringa oleifera Leaves 3D Porous Carbon-Based Electrode Material as a High-Performance EDLC Supercapacitor

“…Moreover, modifying the cations and anions in the aqueous electrolyte can affect the electrochemical substance of the supercapacitor, especially at the MOL750 carbon disc electrode. This is due to ionic mobility, ionic hydrated radius, conductivity, and impact on charge/ion exchange as well as diffusion . The small dehydrated sphere of H + cations compared to K + and Na + allows the charge on the cations to produce the greatest molar ionic conductivity and ionic mobility .…”

Green self-activation engineering of metal–organic framework derived hollow nitrogen-doped carbon spheres towards supercapacitors

“…Considering the corrosive nature of both KOH and H 2 SO 4 , the neutral aqueous electrolytes including Li 2 SO 4 , Na 2 SO 4 and K 2 SO 4 are well-known as even safer aqueous electrolytes for next-generation aqueous ESs. 47 Fig. 8a depicts the CV curves (20 mV s −1 ) of HNCSs-900 with 1 M Li 2 SO 4 , 1 M Na 2 SO 4 and 1 M K 2 SO 4 as aqueous electrolytes, respectively.…”

Water-in-salt electrolytes achieve high energy densities at an ultralow-temperature for aqueous symmetrical supercapacitors

“…Owing to the hydrogen evolution reaction and oxygen evolution reaction (HER/OER), the working voltage of aqueous supercapacitors is often lower than the theoretical decomposition voltage of H 2 O (1.23 V). [19][20][21] Furthermore, the high-concentration water-in-salt (WIS) electrolytes reported in recent years form unique ionic-solvation structures and successfully expand the ESW of aqueous electrolytes due to the decrease of free water. [22][23][24][25] LiTFSI with good conductivity, solubility and stability is often used in lithium-ion batteries.…”