N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors

Sheng, Lizhi; Zhao, Yunyun; Hou, Baoquan; Xiao, Zhenpeng; Jiang, Lili; Fan, Zhuangjun

doi:10.1016/j.carbon.2021.02.018

Cited by 3 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results revealed that the DGRs‐0.6 had the lowest charge‐transfer resistance R ct and relaxation time τ 0 , where

{\tau }_{0}=1/{f}_{0}

, with a maximum value at f 0 . This demonstrated fast electron and ion responses in the DGRs‐0.6 electrode because of its highly porous structure and large accessible surface area 40 …”

Section: Resultsmentioning

confidence: 92%

“…This demonstrated fast electron and ion responses in the DGRs-0.6 electrode because of its highly porous structure and large accessible surface area. 40 The DGRs-0.6 exhibited the highest ion-accessible SSA and the fastest ion diffusion rate. The electrochemical performances of DGRs-0.6 with various mass loadings ranging from 1.0 to 18.2 mg cm −2 were examined.…”

Section: Resultsmentioning

confidence: 93%

See 1 more Smart Citation

Density and porosity optimization of graphene monoliths with high mass‐loading for high‐volumetric‐capacitance electrodes

et al. 2022

Self Cite

View full text Add to dashboard Cite

Improving the volumetric capacitance of graphene materials for supercapacitors without sacrificing their rate capability, especially at high mass‐loading, is a challenge because of the sluggish electrochemical kinetics of compact graphene electrodes. Here, a compact graphene monolith (dense graphene ribbons [DGRs]‐0.6) was fabricated by using graphene oxide ribbons as building blocks and deliberately harmonizing the graphene primitive unit structure and interlayer spacing. The DGRs‐0.6 contained abundant oxygen‐containing functional groups and a highly interconnected pore structure, resulting in a large ion‐accessible surface area, a high packing density, and fast electron/ion transport pathways. The DGRs‐0.6 electrode exhibited a volumetric capacitance of 316 F cm–3, a rate capability of 220 F cm–3 at 100 A g–1, and ultralong cycling stability. For a mass loading of 11 mg cm−2, the DGRs‐0.6 delivered volumetric capacitances of 150 F cm−3 at 1 A g−1 and 109 F cm−3 at 50 A g−1. The good rate capability and volumetric capacitance of DGRs‐0.6 under high mass loading demonstrate its potential as a supercapacitor electrode for practical applications.

show abstract

“…The results revealed that the DGRs‐0.6 had the lowest charge‐transfer resistance R ct and relaxation time τ 0 , where

{\tau }_{0}=1/{f}_{0}

, with a maximum value at f 0 . This demonstrated fast electron and ion responses in the DGRs‐0.6 electrode because of its highly porous structure and large accessible surface area 40 …”

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 93%

Density and porosity optimization of graphene monoliths with high mass‐loading for high‐volumetric‐capacitance electrodes

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Supercapacitor is an energy storage device that stores and releases electrical energy within a few seconds [51]. It stores energy as electric charge at electrolyte porous carbon electrode interface more than ten times conventional capacitor does [52]. It has to its advantages, high power density and satisfactory energy density [53].…”

Section: Bio-char As Energy and Energy Storage Devicementioning

confidence: 99%

Pyrolysis: A Convenient Route for Production of Eco-Friendly Fuels and Precursors for Chemical and Allied Industries

Jabar¹

2022

Recent Perspectives in Pyrolysis Research

View full text Add to dashboard Cite

Thermochemical decomposition of post harvest agro-wastes (biomass) to solid carbonaceous material called as bio-char, condensable vapors (bio-oils and bio-tars) and non-condensable vapors (bio-gas or syn-gas) is referred as pyrolysis. The yield of these products from biomass pyrolysis depends on temperature and other conditions (such as vapor retention time and heating rate) of thermal decomposition in air or oxygen excluded reactor. Bio-char is often used as adsorbent in treatment of water contaminated with dye effluent from textile industry and/or emerging contaminants from other industries. It is also used in production of supercapacitor for energy storage, fertilizer composite and soil amendment for slow release of nutrients for plants and stabilizing pH, enhances water holding and ion exchange capacity of soil. Bio-oils are used for transportation fuels, soaps and other cosmetics production. Bio-tars are also used for transportation fuels but with high heating values and also as organic solvents in chemical, biological and biochemical laboratories. Non-condensable vapors are mostly used as bio-fuels. Products of biomass pyrolysis are potential alternative eco-friendly precursors for chemical and allied industries.

show abstract

“…[9,10] As an excellent alternative, heteroatom-doped layered porous carbons (HLPCs) integrate highlevel heteroatom-doping and layered nano space, which have the advantages of good electrical conductivity, better wettability, high ion-accessible surface, resulting in fast ion transport rate and huge electrochemical areas for pseudocapacitive reactions. [11,12] However, the preparation of HLPCs commonly concerns costly precursors or severe manufacturing conditions or prolix preparation process, resulting in its difficulty in achieving large-scale production. [13] Thus, seeking low-cost carbon precursors and exploration of facile costeffective ways for the preparation of HLPCs are still key and urgent assignments.…”

Section: Introductionmentioning

confidence: 99%

Ammonium Folate‐Reinforced Self‐Assembly of Gelatin into N/B/O‐Enriched Hierarchical Porous Carbons with Loosely Layered Structure for Anti‐Freezing Flexible Supercapacitors

Yu,

Ye,

Yang

et al. 2023

Small

View full text Add to dashboard Cite

Heteroatom‐doped layered porous carbons are recently regarded as promising electrode materials for high energy density supercapacitors because they can integrate high‐level heteroatom‐doping and layered nano‐space together to provide huge pseudocapacitive reaction areas and accelerate ion diffusion/transport. Herein, an innovative strategy is reported to prepare N/B/O co‐doped layered porous carbons via ammonium folate‐reinforced self‐assembly of gelatin and boric acid followed by carbonization. Biomass‐derived ammonium folate not only acts as an N‐riched precursor but also can fasten in the process of self‐assembly via boric acid‐assisted electrostatic adsorption and hydrogen bonding to promote the formation of stable 3D cross‐linked networks, resulting in the obtained N/B/O co‐doped layered porous carbon (BNLC‐850) has a large specific surface area (1822 m2 g−1), hierarchical porous structure and super‐high heteroatom contents (N, 12.65; B, 5.67; and O, 13.84 at.%). The BNLC‐850 achieves an ultrahigh specific capacitance of 525.2 F g−1 in the alkaline electrolyte at 0.5 A g−1, meanwhile, DFT calculations reveal that the high‐level N/B/O‐doping can effectively weaken the adsorption barriers of K‐ions. Moreover, the BNLC‐850 assembles anti‐freezing flexible solid‐state supercapacitors in MPEI‐TF‐IL gel polymer electrolyte deliver a high energy density of 41.2 Wh kg−1, excellent flexibility, and long cycle‐life at −20 °C.

show abstract

N-doped layered porous carbon electrodes with high mass loadings for high-performance supercapacitors

Cited by 3 publications

References 0 publications

Density and porosity optimization of graphene monoliths with high mass‐loading for high‐volumetric‐capacitance electrodes

Density and porosity optimization of graphene monoliths with high mass‐loading for high‐volumetric‐capacitance electrodes

Pyrolysis: A Convenient Route for Production of Eco-Friendly Fuels and Precursors for Chemical and Allied Industries

Ammonium Folate‐Reinforced Self‐Assembly of Gelatin into N/B/O‐Enriched Hierarchical Porous Carbons with Loosely Layered Structure for Anti‐Freezing Flexible Supercapacitors

Contact Info

Product

Resources

About