Pseudo spin-ladder CaCu2O3 nanostructures as potential electrode material for asymmetric supercapacitors

Veerapandi, G.; Prabhu, Shivananda; Ramesh, R.; Govindan, R.; Sekar, C.

doi:10.1016/j.est.2022.104051

Cited by 15 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In practice, the specific capacitance of electrodes (materials) is also dependent on the charging and discharging current density, as is the case for the specific capacitance of the devices. − In other words, these parameters are a function of the current density. The different electrode materials have different rate capabilities due to the kinetic limitation.…”

Section: Practice Guidelines For the Mass-balancingmentioning

confidence: 99%

The Mass-Balancing between Positive and Negative Electrodes for Optimizing Energy Density of Supercapacitors

Jing,

Zhuo,

Sun

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

Supercapacitors (SCs) are some of the most promising energy storage devices, but their low energy density is one main weakness. Over the decades, superior electrode materials and suitable electrolytes have been widely developed to enhance the energy storage ability of SCs. Particularly, constructing asymmetric supercapacitors (ASCs) can extend their electrochemical stable voltage windows (ESVWs) and thus achieve high energy density. However, only full utilization of the electrochemical stable potential windows (ESPWs) of both positive and negative electrodes can endow the ASC devices with a maximum ESVW by using a suitable mass-ratio between two electrodes (the mass-balancing). Nevertheless, insufficient attention is directed to mass-balancing, and even numerous misunderstandings and misuses have appeared. Therefore, in this Perspective, we focus on the mass-balancing: summarize theoretic basis of the mass-balancing, derive relevant relation equations, analyze and discuss the change trends of the specific capacitance and energy density of ASCs with mass-ratios, and finally recommend some guidelines for the normative implementation of the mass-balancing. Especially, the issues related to pseudocapacitive materials, hybrid devices, and different open circuit potentials (OCPs) of the positive and negative electrodes in the mass-balancing are included and emphasized. These analyses and guidelines can be conducive to understanding and performing mass-balancing for developing high-performance SCs.

show abstract

Section: Practice Guidelines For the Mass-balancingmentioning

confidence: 99%

The Mass-Balancing between Positive and Negative Electrodes for Optimizing Energy Density of Supercapacitors

Jing,

Zhuo,

Sun

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…At present, increasing energy demand and atmospheric pollutants have become two challenging issues; particularly, the decrease in fossil fuel resources and many environmental problems are due to the increase in the global population. Thus, the development of sustainable novel alternatives to replace fossil fuels , has become an important issue. In this context, the growth of sustainable energy conversion and storage technologies for the usage of portable electronic, electrical grids and electric vehicles has received immense attention .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

et al. 2023

View full text Add to dashboard Cite

Capsule-like CuO/CDs (CuO@CDs) with a surface area of 33.12 m2 g–1 were synthesized by the hydrothermal treatment, compared to 19.02 m2 g–1 for pristine CuO. An anode was then fabricated from capsule-like CuO@CDs to form a hybrid solid-state supercapacitor (HSSC) with the activated carbon (AC) cathode and PVA/1M KOH as an electrolyte. Three electrode system offered 1208.88 F/g (specific capacitance at 2 A/g current density) and unveiled a remarkable life cycle (retention) and Coulombic efficiency (CF): 93 and 98% after 5000 charge–discharge cycles at 10 A/g. In terms of performance, the HSSC delivered 1.5 V and 102.60 F/g (50.74 C/g) at 2 A/g, 8437.50 W/kg (power density), and 36.90 Wh/kg (energy density). The HSSC still retained 92% of cyclic stability and 83% of CF after 10,000 cycles.

show abstract

“…Also, SC electrodes can be classified according to the type of storage mechanism [25]. These electrodes generally include Pseudocapacitance materials (metal oxides and metal-containing materials [26][27][28][29][30][31][32], conducting polymers [33][34][35], biopolymers [25], MOFs [36][37][38], heteroatomcontaining and heteroatom-doped materials [39][40][41][42][43][44], etc. ), double-layer capacitance materials (graphene [45,46], CNT [47][48][49], graphene nanoribbons [50], etc.…”

Section: Introductionmentioning

confidence: 99%

Si-containing 3D cage-functionalized graphene oxide grafted with Ferrocene for high-performance supercapacitor application: An experimental and theoretical study

AliAkbari

Kowsari

Naderi

et al. 2022

Journal of Energy Storage

View full text Add to dashboard Cite

Pseudo spin-ladder CaCu2O3 nanostructures as potential electrode material for asymmetric supercapacitors

Cited by 15 publications

References 51 publications

The Mass-Balancing between Positive and Negative Electrodes for Optimizing Energy Density of Supercapacitors

The Mass-Balancing between Positive and Negative Electrodes for Optimizing Energy Density of Supercapacitors

Enhanced Electrochemical Performance of CuO Capsules@CDs Composites for Solid-State Hybrid Supercapacitor

Si-containing 3D cage-functionalized graphene oxide grafted with Ferrocene for high-performance supercapacitor application: An experimental and theoretical study

Contact Info

Product

Resources

About