A comprehensive review of hybrid supercapacitor from transition metal and industrial crop based activated carbon for energy storage applications

Mandal, Sujata; Hu, Jiyao

doi:10.1016/j.mtcomm.2022.105207

Cited by 22 publications

(9 citation statements)

References 174 publications

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“…Therefore designing efficient electrode materials in a sensible way is highly crucial. 9–11 Recently, the development of battery-type electrode materials have attracted giant attention of researchers. Among several transition metal compounds, 12,13 layered double hydroxides (LDHs) are considered a favorable battery-type electrode material due to their versatility in chemical composition tuning, bimetallic nature, ease of anion exchange within their layers, substantial theoretical specific capacitance, and strong redox activity.…”

Section: Introductionmentioning

confidence: 99%

Exchanging interlayer anions in NiFe-LDHs nanosphere enables superior battery-type storage for high-rate aqueous hybrid supercapacitors

Nishad,

Kotha,

Sarawade

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Exchanging interlayer anions in NiFe-LDHs nanosphere enables superior battery-type storage for high-rate aqueous hybrid supercapacitors

Nishad,

Kotha,

Sarawade

et al. 2024

J. Mater. Chem. A

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“…Evidently, both batteries and supercapacitors suffer from limitations in terms of power and energy, respectively, and as a result of which the simultaneous use of both faradaic and non-faradaic storage processes is considered to be a viable strategy. This led to the realization of hybrid systems, which are based on asymmetric supercapacitor devices (a two-electrode system consisting of an electric double-layer capacitor (EDLC) and a pseudocapacitor (PC)) or hybrid device (made up of a battery-type electrode and a capacitive (EDLC or PC) electrode) [1][2][3][4][5][6]. In general, EDLCs are mainly carbon-based materials, which are cost effective, easy to process, and highly porous, with a large surface area and a good cycle life, but low charge storage capability.…”

Section: Introductionmentioning

confidence: 99%

Battery-Type Behavior of Al-Doped CuO Nanoflakes to Fabricate a High-Performance Hybrid Supercapacitor Device for Superior Energy Storage Applications

Pallavolu,

Banerjee,

Joo

2023

Coatings

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The ever-increasing energy demands have prompted researchers to develop innovative charge-storage devices. Here, aluminum-doped copper-oxide nanoflakes were fabricated via a simple co-precipitation method to investigate the electrochemical properties, which depicted a novel dominant battery-type charge-storage mechanism, manifested by the porous morphology of the electrodes to enhance the diffusion-controlled process. Copper oxide was chosen as the electroactive material due to its low cost, easy processability, environmental friendliness, and multiple oxidation states, all of which are very important for practical applicability in charge-storage devices. Additionally, aluminum was chosen as a dopant due to its elemental abundance, non-toxicity, and energetically favorable ionic radius for substitutional doping. A maximum 272 C/g (@1 A/g current-density) specific capacity was observed for 5 wt% Al-doped CuO. Evidently, higher Al-doping provided increased defects and doping sites to enhance the redox activity in order to improve the supercapacitive performance. A combinatorial battery−capacitor charge-storage mechanism was proposed in terms of the accumulation and intercalation of charges at the inner electroactive sites of the nanoflakes through a large number of voids and cavities in order to contribute towards dominant battery-type diffusion capacitance, while optimum Al-doping created considerable redox-active sites to promote surface-controlled pseudocapacitance. The optimized Al-CuO electrode revealed extraordinary long-term cycling stability with 99% capacity retention over 5000 charge/discharge cycles. A hybrid two-electrode device, made up of a battery type Al-CuO positrode and capacitor-type activated-carbon negatrode, demonstrated a remarkable energy-power performance with a maximum energy density of 30 Wh/kg and a maximum power density of 7.25 kW/kg, with an excellent cycle life (98% capacity retention over 5000 cycles). This work demonstrates a novel strategy to fabricate high-performance hybrid supercapacitors for the next generation charge-storage devices.

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“…Energy storage is a key section in alleviating energy shortage. Supercapacitor is attracting the attention of researchers in the field of energy storage, because of its high power density, long service life and fast charge-discharge rate [1]. Supercapacitor is mainly composed of active electrodes and electrolyte [2].…”

Section: Introductionmentioning

confidence: 99%

Effects of plasma on electrochemical performance of carbon cloth-based supercapacitor

Zhou

2023

Mater. Res. Express

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In this work, the surface of carbon cloth is treated by plasma jet to improve its hydrophilicity. The symmetrical carbon cloth-based supercapacitor is assembled with the carbon cloth treated by plasma as the active electrodes and sodium chloride solution as the electrolyte. With the discharge time (1 min, 2 min, 3 min) and working gas types (argon, air, helium) of plasma as variables, the effects of different plasma on the hydrophilicity of carbon cloth are observed, and the changes of the electrochemical properties of the supercapacitors with single or double carbon cloth electrodes treated by different plasma are studied. The contact angle test results show that the plasma of different working gases can weaken the hydrophobicity of carbon cloth, and the helium plasma can make the carbon cloth change from hydrophobicity to hydrophilicity. The electric capacity calculated by cyclic voltammetry shows that plasma can increase the electric capacity of carbon cloth-based supercapacitors. The electric capacity of carbon cloth-based supercapacitors with two carbon cloth electrodes treated by plasma is larger than that of single carbon cloth electrode treated by plasma. The argon and helium plasma with longer discharge time can significantly improve the electric capacity of carbon cloth-based supercapacitors. The galvanostatic charge-discharge curve shows that different working gases of plasma can make carbon cloth-based supercapacitors obtain pseudocapacitance, increase the charge-discharge time and electric capacity. From the AC impedance spectrum, it can be concluded that the plasma of any kind of working gas can reduce the impedance and charge transfer resistance of the carbon cloth-based supercapacitor. The longer plasma discharge time lead to the smaller impedance, and the impedance of the supercapacitor with both carbon cloth electrodes treated by plasma is smaller.

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A comprehensive review of hybrid supercapacitor from transition metal and industrial crop based activated carbon for energy storage applications

Cited by 22 publications

References 174 publications

Exchanging interlayer anions in NiFe-LDHs nanosphere enables superior battery-type storage for high-rate aqueous hybrid supercapacitors

Exchanging interlayer anions in NiFe-LDHs nanosphere enables superior battery-type storage for high-rate aqueous hybrid supercapacitors

Battery-Type Behavior of Al-Doped CuO Nanoflakes to Fabricate a High-Performance Hybrid Supercapacitor Device for Superior Energy Storage Applications

Effects of plasma on electrochemical performance of carbon cloth-based supercapacitor

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