A one-dimensional Ag NW@NiCo/NiCo(OH)<sub>2</sub> core–shell nanostructured electrode for a flexible and transparent asymmetric supercapacitor

Liu, Junyan; Shen, Gengzhe; Zhao, Sirou; He, Xin; Zhang, Chengkai; Jiang, Tinghui; Jiang, Jiayi; Chen, Bohua

doi:10.1039/c9ta01303b

Cited by 60 publications

(53 citation statements)

References 51 publications

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“…The assembled Ni 2 P 2 O 7 /Ni–Co‐hydroxide//AC hybrid worked at a high voltage limit of 1.6 V with an energy density of 78 Wh kg −1 (1.065 mWh cm −3 ) and revealed extraordinary cyclic stability over 10 000 charge–discharge cycles with excellent energy efficiency (75%–80%) for all current densities. Similarly, Liu et al [ 240 ] developed transparent HSSC by using the core–shell structured electrodes. Initially, they prepared the Ag nanowire‐decorated NiCo/NiCo(OH) 2 to form the core–shell electrode, which was used as a positive electrode to assemble the hybrid supercapacitor.…”

Section: Materials Innovations For Solid‐state Asymmetric Designsmentioning

confidence: 99%

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

Chodankar

Pham

Kumar

et al. 2020

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The development of pseudocapacitive materials for energy‐oriented applications has stimulated considerable interest in recent years due to their high energy‐storing capacity with high power outputs. Nevertheless, the utilization of nanosized active materials in batteries leads to fast redox kinetics due to the improved surface area and short diffusion pathways, which shifts their electrochemical signatures from battery‐like to the pseudocapacitive‐like behavior. As a result, it becomes challenging to distinguish “pseudocapacitive” and “battery” materials. Such misconceptions have further impacted on the final device configurations. This Review is an earnest effort to clarify the confusion between the battery and pseudocapacitive materials by providing their true meanings and correct performance metrics. A method to distinguish battery‐type and pseudocapacitive materials using the electrochemical signatures and quantitative kinetics analysis is outlined. Taking solid‐state supercapacitors (SSCs, only polymer gel electrolytes) as an example, the distinction between asymmetric and hybrid supercapacitors is discussed. The state‐of‐the‐art progress in the engineering of active materials is summarized, which will guide for the development of real‐pseudocapacitive energy storage systems.

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Section: Materials Innovations For Solid‐state Asymmetric Designsmentioning

confidence: 99%

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

Chodankar

Pham

Kumar

et al. 2020

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550

329

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“…The oxidation and reduction peaks respectively move slightly to higher and lower potentials as the increase in scan rate [26]. It might be attributed to the larger movement speeds of the OHat a higher scan rate, generating a faster redox reaction [46]. The GCD curves were measured using current density changed from 1 to 10 mA/cm 2 within the potential window of 0-0.55 V, exhibiting a pseudocapacitive characteristic with a potential plateau due to the faradic reactions ( Figure 5e) [12].…”

Section: Resultsmentioning

confidence: 95%

Binder-Free Nickel Oxide Lamellar Layer Anchored CoOx Nanoparticles on Nickel Foam for Supercapacitor Electrodes

et al. 2020

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To enhance the connection of electroactive materials/current collector and accelerate the transport efficiency of the electrons, a binder-free electrode composed of nickel oxide anchored CoOx nanoparticles on modified commercial nickel foam (NF) was developed. The nickel oxide layer with lamellar structure which supplied skeleton to load CoOx electroactive materials directly grew on the NF surface, leading to a tight connection between the current collector and electroactive materials. The fabricated electrode exhibits a specific capacitance of 475 F/g at 1 mA/cm2. A high capacitance retention of 96% after 3000 cycles is achieved, attributed to the binding improvement at the current collector/electroactive materials interface. Moreover, an asymmetric supercapacitor with an operating voltage window of 1.4 V was assembled using oxidized NF anchored with cobalt oxide as the cathode and activated stainless steel wire mesh as the anode. The device achieves a maximum energy density of 2.43 Wh/kg and power density of 0.18 kW/kg, respectively. The modified NF substrate conducted by a facile and effective electrolysis process, which also could be applied to deposit other electroactive materials for the energy storage devices.

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“…So far, very few papers have been found involving the use of nickel nanowires for TCEs. In addition to the already mentioned works, [1,36,41] the articles [46,47] are interesting in our opinion. To design TCEs, Ni(OH) 2 nanolayers are enwrapped in graphene shells to design TCEs [46] .…”

Section: Figurementioning

confidence: 95%

“…To design TCEs, Ni(OH) 2 nanolayers are enwrapped in graphene shells to design TCEs [46] . The authors [47] use nanostructured nickel complexes (NiCo/NiCo(OH) 2 ) to modify the network of silver nanowires in order to create a transparent supercapacitor with high electrochemical characteristics.…”

Section: Figurementioning

confidence: 99%

Oriented Nickel Nanonetworks and Their Submicron Fibres as a Basis for a Transparent Electrically Conductive Coating

et al. 2021

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The paper demonstrates a technique for applying an oriented nickel network to a glass surface. The method is based on the chemical reduction of nickel salt. The shaping and orientation of the resulting system are carried out using a micellar template of a surfactant and a magnetic field. Submicron nickel fibres are used to impart unity to the plurality of individual‐oriented nickel nanonetworks. The result is a single conductive coating on the surface of the glass, which has a transparency in the optical range. Investigations of the structure, chemical composition, morphology and electrical conductivity of the coating were performed.

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A one-dimensional Ag NW@NiCo/NiCo(OH)₂ core–shell nanostructured electrode for a flexible and transparent asymmetric supercapacitor

Abstract: One-dimensional Ag nanowire@NiCo/NiCo(OH)2 core–shell nanostructures with a tunable composition are constructed by electrodeposition, showing potential applications in transparent and flexible supercapacitors.

Cited by 60 publications

References 51 publications

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

Binder-Free Nickel Oxide Lamellar Layer Anchored CoOx Nanoparticles on Nickel Foam for Supercapacitor Electrodes

Oriented Nickel Nanonetworks and Their Submicron Fibres as a Basis for a Transparent Electrically Conductive Coating

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A one-dimensional Ag NW@NiCo/NiCo(OH)2 core–shell nanostructured electrode for a flexible and transparent asymmetric supercapacitor

Abstract: One-dimensional Ag nanowire@NiCo/NiCo(OH)2 core–shell nanostructures with a tunable composition are constructed by electrodeposition, showing potential applications in transparent and flexible supercapacitors.

Cited by 60 publications

References 51 publications

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

True Meaning of Pseudocapacitors and Their Performance Metrics: Asymmetric versus Hybrid Supercapacitors

Binder-Free Nickel Oxide Lamellar Layer Anchored CoOx Nanoparticles on Nickel Foam for Supercapacitor Electrodes

Oriented Nickel Nanonetworks and Their Submicron Fibres as a Basis for a Transparent Electrically Conductive Coating

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A one-dimensional Ag NW@NiCo/NiCo(OH)₂ core–shell nanostructured electrode for a flexible and transparent asymmetric supercapacitor