Co3O4 nanowires@MnO2 nanolayer or nanoflakes core–shell arrays for high-performance supercapacitors: The influence of morphology on performance

Capacitance Performance of Nanostructured CoNi2S4 with Different Morphology Grown on Carbon Cloth for Supercapacitors

“…Thus considerable efforts have been focused on the design of binder‐free electrode architectures to avoid the “dead surface”, which is good for more efficient charge exchange and electrolyte penetration. Based on this consideration, many people choose to grow materials on conductive substrates such as Ni foam, graphene, and carbon cloth in order to increase the utilization efficiency of the electroactive materials. Many transition‐metal oxides have been built on carbon fiber; these include NiCo 2 O 4 , Ni(OH) 2 , Co 3 O 4 nanowires@MnO 2 nanolayer, NiMoO 4 nanowires, and MnO 2 nanosheet arrays which finally display excellent electrochemical performance.…”

“…[a] Z. Ai, Prof. Z. Hu, Y. Liu, M. Yao Department of Chemistry Tongji University graphene, [26,27] and carbon cloth [28][29][30][31][32] in order to increase the utilization efficiency of the electroactivem aterials. Many transition-metal oxidesh ave been built on carbon fiber;t hese include NiCo 2 O 4 , [28] Ni(OH) 2 , [29] Co 3 O 4 nanowires@MnO 2 nanolayer, [30] NiMoO 4 nanowires, [31] and MnO 2 nanosheet arrays [32] which finally displaye xcellent electrochemical performance.I nspired by the benefits of these strategies, some researchers also tried to grow nickel and cobalt sulfides on nickel foam and carbon fiber.S of ar,t hree-dimensional porousN iCo 2 S 4 nanonetworks on nickel foam, [33] hierarchicalm ushroom-like CoNi 2 S 4 arrays on nickel foam, [34] CoNi 2 S 4 nanoribbons on carbon fibers, [35] CoNi 2 S 4 nanosheet arrays supportedo nN i foams, [36] burl-like nickel cobalt sulfide on carbon fibers, [37] and NiCo 2 S 4 nanotube arrays on Ni foam [17] have been fabricated. However,t here are few reports focusingo nt he influence of the anions in the nickel and cobalt salts on the electrochemical performance of the final electrode material, CoNi 2 S 4 on flexible substrates.…”

Degradation of benzotriazole by a novel Fenton-like reaction with mesoporous Cu/MnO 2 : Combination of adsorption and catalysis oxidation

“…The Mn 2p XPS spectrum exhibited two major peaks at 654.4 (Mn 2p 1/2 ) and 642.6 eV (Mn 2p 3/2 ) with a spin-energy separation of 11.8 eV(Fig. 2(B))[26,27]. A peak at 641.8 eV was an evidence of the presence of Mn 3+ species on the surface.…”

“…Proposed transformation pathway of BZA by Fenton-like reaction derived by MCM Scheme 1 Reaction mechanism of MCM Fenton-like reaction 26. …”

Facile Synthesis of Superthin Co3O4 Porous Nanoflake for Stable Electrochemical Supercapacitor

“…As a result, researchers have attempted to adjust the morphology of cobalt oxide to obtain desired electrochemical properties. Then, various morphologies of Co 3 O 4 have been synthesized for supercapacitor application, such as nanowires, nanosheets, nanobelts, hollow spheres . But, the above reported Co 3 O 4 nanomaterial shows lower specific capacitance than its theoretical capacitance (∼3000 F g −1 ).…”