Metal-organic framework-based materials for hybrid supercapacitor application

Asymmetric Supercapacitors Based on Hierarchically Nanoporous Carbon and ZnCo2O4 From a Single Biometallic Metal-Organic Frameworks (Zn/Co-MOF)

“…Besides being used as catalysts (Lee et al, 2009 ), MOFs can also act as potential adsorbents (Zhang et al, 2019 ), as a stationary phase in chromatographic separation (Zhang and Chen, 2017 ), or in electrochemical detection (Zhang et al, 2018 ) and photocatalytic degradation of organic pollutants (Li et al, 2020 ), and etc. Recently, the exploration of MOFs in energy storage and conversion has gained more and more importance (Wang et al, 2018 , 2019a ; Xie et al, 2018 ). However, pristine MOFs usually have low electric conductivity, weak structure flexibility, and ion insertion steric hindrance, so the electrochemical performance of pristine MOF-based energy storage devices is not ideal.…”

“…More interestingly, using MOFs as precursors for electrode materials in supercapacitors has another unique advantage, that is, the negative electrode materials (NPC) and positive electrode materials (metal oxides) can be obtained from the same single MOFs via the “One-for-All” strategy (Qu et al, 2018 ). Because both the negative-/positive electrodes derive from the same nanoarchitectures, they can match well-naturally, which is especially attractive in ASCs for they often suffer from poor-matched negative/positive electrode materials (Wang et al, 2019a ). Based on the “One-for-All” strategy, Yamauchi Y. et al (Salunkhe et al, 2015b ) fabricated NPCs and cobalt oxide (Co 3 O 4 ) from a single MOF (ZIF-67); the assembled ASCs with the ZIF-67-derived NPCs and Co 3 O 4 showed a high energy density of 36 Wh kg −1 .…”

State of the Art and New Directions on Electrospun Lignin/Cellulose Nanofibers for Supercapacitor Application: A Systematic Literature Review

“…Human activities, security, and industrialization depend on energy production and this energy is mostly derived from fossil fuels [1]. However, heavy consumption of fossil fuels poses a serious environmental challenge due to the emission of CO 2 , SO 2 , and NO x into the atmosphere [2]. The World Energy Council (www.worldenergy.org) has estimated that by 2050, the world would demand twice its present energy consumption.…”

“…The World Energy Council (www.worldenergy.org) has estimated that by 2050, the world would demand twice its present energy consumption. Thus, a green approach to an effective energy production system that can replace fossil fuels is necessary [2][3][4]. Recently, flexible supercapacitors are among the most investigated energy storage devices due to their high-power density, rapid charge/discharge rate, excellent cycle stability, and robust nature.…”

Tuning the morphology of manganese oxide nanostructures for obtaining both high gravimetric and volumetric capacitance

“…[1][2][3] The most commonly used electrode materials are active carbon materials 4,5 (graphenes, 6 nanotubes, 7 and carbon materials obtained from biomass 8 ), conducting polymers, 9 metallic nanoparticles, 10 transition metal oxides and selenides, [11][12][13] and composite materials. [14][15][16][17] Manganese oxides (MOs) have been widely studied as electrode materials, due to their high energy storage capacity, abundancy in nature and low cost. [18][19][20] MOs can exist in several oxidation states (Mn 2+ , Mn 3+ and Mn 4+ ), forming different oxides, such as MnO, Mn 3 O 4 , Mn 2 O 3 and MnO 2 .…”