Both MOFs-derived Fe-Co-Ni ternary hydroxide positive and Fe2O3/reduced graphene oxide negative electrode for asymmetric supercapacitors

M-Ni-Co MOF (M=Zn, Fe, Mn) for high-performance supercapacitors by adjusting its morphology

“…By contrast, the resistance of Zn-3, Fe-2 and Mn-3 is significantly smaller than C-3, which indicated that Zn-3, Fe-2 and Mn-3 had much faster charge transfer rates explaining their better electrochemical performance. Compared to some other Ni, Co-MOF or MOF derived LDT, R2 values of our samples still has advantages [ 16 , 17 , 22 ]. Table.…”

“…Varied metal salt and different organic linkers form thousands of types MOFs for different pore structures. High porosity makes MOF appropriate in adsorption, and varied pore structure make it high-performance in storage of different gas, like hydrogen, methane, acetylene, CO 2 , etc [ [12] , [13] , [14] , [15] , [16] ]. High specific surface induced by the adjustable pore structures and ions in system supply MOF a high performance in supercapacitors [ 5 , 17 ].…”

Porous graphene/CNT@metal (hydr)oxide composite films achieving fast ion and electron kinetics for asymmetric supercapacitors with ultra-high volumetric performance

“…6c), which is higher than those of most reported ASCs and materials. 10,19,20,[43][44][45][46][47][48] Meanwhile, the ASC delivers a volumetric energy density of 114.3 W h L −1 at a volumetric power density of 517.9 W L −1 (Fig. 6d), superior to many advanced ACSs and materials, including HRGO/Ni(PA) 2 -1//HRGO (23.7 W h L −1 at 632 W L −1 ), 49 GO (9.1 W h L −1 at 2777.3 W L −1 ), 50 CLFW@(Co, Ni)-(CoS, NiS) (66 W h L −1 at 50 W L −1 ), 51 CNF@Ni (58 W h L −1 at 39 W L −1 ), 52 and GNS/Fe (14.6 W h L −1 at 381 W L −1 ).…”

“…[14][15][16][17][18] Among various pseudocapacitive materials, Fe 2 O 3 is a potential negative electrode material owing to its high capacity, wide voltage window, non-toxicity, eco-friendliness, cost-effectiveness, abundant reserves, and facile synthesis. 19,20 Ni(OH) 2 , considered a versatile positive electrode material, possesses a theoretical specific capacitance as high as 2082 F g −1 . 21 However, difficulties are encountered in their practical applications due to their low conductivity, unsatisfactory filmforming ability, and the fast decay of electrochemical properties.…”

Three-Dimensional Flower-Like Ce-Doped NiGa Layered Double Hydroxide for All-Solid-State Asymmetric Supercapacitors

“…Their actual capacity is much lower than the theoretical capacity, which seriously hinders their wide application in electrochemical energy storage. , To prevent the self-stacking of LDHs, electrical conductivity and active sites were increased to improve utilization, thus further improving its electrochemical performance. It was found that adding another metal hydroxide to the substrate to prepare ternary LDHs would be an effective strategy to achieve excellent electrochemical performance. − For example, Wang et al prepared Sr-doped sea-urchin-like nickel and cobalt hydroxide by a simple hydrothermal method. The special sea-urchin-like structure could provide abundant active sites.…”