Design and structure of nitrogen and oxygen co-doped carbon spheres with wrinkled nanocages as active material for supercapacitor application

Liu, Zhisen; Qin, Aimiao; Zhang, Kaiyou; Lian, Peng; Yin, Xinyu; Tan, Hua

doi:10.1016/j.nanoen.2021.106540

Cited by 94 publications

(30 citation statements)

References 52 publications

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“…3(C) shows the CD proles of graphene PI-SCSPC measured using different applied currents from 5 to 100 mA, which show a quasi-symmetric triangularshaped prole indicating EDLC characteristics. 49 Graphene PI-SCSPC possess a high areal capacitance of 245.02 mF cm À2 from the CD prole recorded using 5 mA (Fig. 3(D)).…”

Section: (G) and (H)mentioning

confidence: 93%

Decoupling mechano- and electrochemical gating: a direct visualization for piezo-ionic propelled proton tunneling in self-charging supercapacitors

et al. 2022

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Section: (G) and (H)mentioning

confidence: 93%

Decoupling mechano- and electrochemical gating: a direct visualization for piezo-ionic propelled proton tunneling in self-charging supercapacitors

et al. 2022

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“…Moreover, among these nitrogen functional groups, N-1 and N-2 are considered to contribute more to the specific capacitance by introducing pseudo-capacitance, whereas N-3 can effectively improve the conductivity of the carbon materials by promoting electron transfer, which correspondingly induces a good supercapacitor performance of the HTS-APC. [49][50][51][52] The relative content of each oxygen, nitrogen and carbon functional groups are shown in Table S2, Supporting Information. Moreover, Figure 3i shows the atomic content of different samples.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Porous Carbon Activation Promises High‐Energy Density Supercapacitors

Liu

Duan

Dou

et al. 2022

Small

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Activated porous carbons (APCs) are traditionally produced by heat treatment and KOH activation, where the production time can be as long as 2 h, and the produced activated porous carbons suffer from relatively low specific surface area and porosity. In this study, the fast high‐temperature shock (HTS) carbonization and HTS‐KOH activation method to synthesize activated porous carbons with high specific surface area of ≈843 m2 g‐1, is proposed. During the HTS process, the instant Joule heating (at a heating speed of ≈1100 K s‐1) with high temperature and rapid quenching can effectively produce abundant pores with homogeneous size‐distribution due to the instant melt of KOH into small droplets, which facilitates the interaction between carbon and KOH to form controllable, dense, and small pores. The as‐prepared HTS‐APC‐based supercapacitors deliver a high energy density of 25 Wh kg‐1 at a power density of 582 W kg‐1 in the EMIMBF4 ionic liquid. It is believed that the proposed HTS technique has created a new pathway for manufacturing activated porous carbons with largely enhanced energy density of supercapacitors, which can inspire the development of energy storage materials.

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“…The energy density ( E ) and power density ( P ) were calculated using the following formula:where I (A), m (g), , and t (s) are the discharge current, the total loading of the asymmetric supercapacitor, the integral area of the discharge curve, and the discharge time, respectively. 43…”

Section: Methodsmentioning

confidence: 99%

“…where I (A), m (g), Ð VðtÞ, and t (s) are the discharge current, the total loading of the asymmetric supercapacitor, the integral area of the discharge curve, and the discharge time, respectively. 43…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

Microwave heating followed by a solvothermal method to synthesize nickel–cobalt selenide/rGO for high-performance supercapacitors

Zhou

Tang

et al. 2022

New J. Chem.

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Design and structure of nitrogen and oxygen co-doped carbon spheres with wrinkled nanocages as active material for supercapacitor application

Cited by 94 publications

References 52 publications

Decoupling mechano- and electrochemical gating: a direct visualization for piezo-ionic propelled proton tunneling in self-charging supercapacitors

Decoupling mechano- and electrochemical gating: a direct visualization for piezo-ionic propelled proton tunneling in self-charging supercapacitors

Ultrafast Porous Carbon Activation Promises High‐Energy Density Supercapacitors

Microwave heating followed by a solvothermal method to synthesize nickel–cobalt selenide/rGO for high-performance supercapacitors

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