Materials design and preparation for high energy density and high power density electrochemical supercapacitors

Molten salt technique for the synthesis of carbon-based materials for supercapacitors

“…[4][5][6][7][8][9][10][11][12][13][14] Supercapacitors can be divided into two categories based on their energy storage principle: electric-double layer capacitors and Faraday quasi-capacitors. 15 Faraday quasi-capacitors mainly achieve energy storage and conversion by generating Faraday quasicapacitors through reversible redox reactions on and near the surface of active electrode materials. 16,17 The electric-double layer capacitor mainly uses the interface double layer formed between the electrode and electrolyte to store energy.…”

Influence of Mg doping on the structural and optical properties of manganese oxide (Mn2O3) nanoparticles

“…When low valence positive ions are used to dope a metal oxide, the material's normal symmetry is broken, changing the electronic potential at the locations of the substituted atoms. As a result, the material's electrical characteristics have been significantly altered [30]. There have been some results on Zn-doped manganese oxide nanoparticles for various applications reported in the literature [31].…”

Controllable sulfidation of polymetallic nickel cobalt molybdenum layered double hydroxides on Ni foam for high-performance hybrid supercapacitors

“…Supercapacitors have many advantages, such as high energy density, fast charge and discharge rate, good cycling performance, wide temperature range, and environmental friendliness, which makes them promising for large-scale energy storage applications. [1][2][3][4][5][6] Currently, various mixed transition metal sulphides (TMSs) such as NiCo 2 S 4 , ZnCo 2 S 4 , MnCo 2 S 4 and CuCo 2 S 4 have been widely used in electrochemical energy conversion and storage due to their excellent electrical conductivity and rich electrochemical redox properties. [7][8][9] For example, Liu et al 10 synthesized NiCoS/LIG using laser-induced graphene, which achieved 680 mF cm −2 at 1 mA cm −2 .…”

“…Supercapacitors have many advantages, such as high energy density, fast charge and discharge rate, good cycling performance, wide temperature range, and environmental friendliness, which makes them promising for large-scale energy storage applications. 1–6…”