Ternary selenides nanosheets constituting coaxial structural electrode for flexible supercapacitors

Advanced MnOx/MnWO4 hetero-nanoflakes with abundant oxygen vacancies for high-performance flexible asymmetric supercapacitors with high energy density

“…5,6 According to the energy storage mechanism of electrode materials, they can be divided into battery type (BT) with high energy density and capacitance type (CT) with high power density. [7][8][9] MnO 2 is a promising BT material owing to its ultrahigh theoretical specific capacity of 616 mA h g −1 in acidic electrolytes based on the four-electron redox reaction and multi-valance. [10][11][12][13] However, a majority of the as-developed MnO 2 -based flexible supercapacitors still suffer from low energy density and capacitance retention owing to their poor electrical conductivity and low electrode utilization ratio.…”

Fabrication of amorphous Co/Mo–MnSex electrode materials for high-performance hybrid supercapacitors

“…Previous reports related to MOF derivatives confirmed that the increased addition of metal elements to metal selenides resulted in the generation of additional redox-centered metal selenides, increasing the strain to improve the cycle life of electrodes. 29–31 Meanwhile, the different skeleton structures formed by selenides increased the porosity and reduced the energy barrier for ion diffusion, resulting in an enhancement in electrochemical performance. 32 However, to the best of our knowledge, publications on the application of trimetallic selenides, especially MOF-derived trimetallic selenides, in energy storage are scarce.…”