Optimized extraction of mesoporous nanocomposites from spent Li-ion batteries and their use to construct high-performance supercapacitor devices with ultra-high stability

Compositionally variant bimetallic Cu–Mn oxysulfide electrodes with meritorious supercapacitive performance and high energy density

“…The integral form of was applied to calculate the specific capacitance owing to the nonlinearity of the discharge curve profile 34,35 …”

A systematic review of efficient recycling for the cathode materials of spent lithium-ion batteries: process intensification technologies beyond traditional methods

“…155,156 This approach improves material performance by intensifying the solid solution solute to increase the value of these materials. 157,158 The recovered products have applications in various fields, includ-ing electrochemical materials (button cell materials, 159 supercapacitor materials, 160 and sodium-ion materials 161 ), adsorbents, 162,163 catalytic materials [164][165][166] ( photocatalysis and electrocatalysis), additives, 167 and more (Fig. 11).…”

“…These CoS materials were then utilized as electrode materials for button cell-type supercapacitors. Mesbah et al 160 employed recovered metals from LIBs to manufacture nanostructured electrodes. They also used the recovered materials as anodes in conjunction with graphene to construct asymmetric supercapacitor devices, achieving stable capacitance retention and excellent cycle stability.…”

Upcycling of Cathode Materials from Spent Lithium-Ion Batteries: Progress, Challenges, and Outlook

“…The energy density achieved 23.9 Wh kg −1 at 450 W kg −1 after 8000 cycles (Figure 6b). Mesbah et al 103 extracted mesoporous LiNiMnCo oxides from spent LIBs through a simple microwave/precipitation method and composited with fullerene (C 76 ) to form LiNiMnCo oxide/C 76 composite electrode for supercapacitor, which delivered an enhanced capacitance of ∼357 F g −1 at 1.0 A g −1 with superior retention rate of ∼115% after 20,000 cycles (Figure 6c). Pappu et al 104 prepared NiMnCo−oxalate electrode for supercapacitor from spent cathodes through a microwave-irradiated citric acid assisted leaching process, which exhibited a specific capacity of 560 F g −1 at 1 A g −1 .…”

“…(c) Capacitance retention and Columbic efficiency of LiNiMnCo oxide/C 76 composite electrode. Reproduced with permission from ref . Copyright 2023, Elsevier.…”