A novel strategy combining electrospraying and one-step carbonization for the preparation of ultralight honeycomb-like multilayered carbon from biomass-derived lignin

Cao, Meilian; Wang, Qingxiang; Cheng, Wanli; Huan, Siqi; Hu, Yi; Niu, Zhaoxuan; Han, Guangping; Cheng, Hui‐Ming; Wang, Ge

doi:10.1016/j.carbon.2021.03.063

Cited by 48 publications

(7 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…CCB-70 possesses excellent stability, as shown in Figure e and the inset. Moreover, the energy density of the CCB-70-based supercapacitor was higher than many other carbon-based supercapacitors, including active carbons, N-doped porous carbon, porous carbon, carbon spheres, carbon fiber, or carbon sheets. ,,− Even after 100 000 cycles at a current density of 2 A g –1 , it still shows a high capacitance retention of 95%.…”

Section: Results and Discussionmentioning

confidence: 98%

Silica-Assisted Controlled Engineering of Nitrogen-Doped Carbon Cages with Bulges for High-Performance Supercapacitors

Chen

Gao

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

The bulge structure of N-doped carbon cages is beneficial to improving the specific surface area and increasing the active sites of a chemical reaction. Therefore, this structure plays a role in increasing capacity in energy storage. However, the precise and most effective method of ensuring the bulge structures is still a challenge. Herein, a silicaassisted method is used to prepare N-doped carbon cages with bulges. The effective assembly of a nitrogen-rich resin and silica precursor is employed to construct the bulge structure on the surface. The reaction temperature of the assembly system and the amount of silica precursor are the key influences on the number and degree of bulges. In contrast to conventional carbon materials that have a smooth surface, the bulge structure allows for exposure and accessibility of the activity sites. Due to the N-doping features, a rich mesoporous structure and controllable bulges, the synergism of the high density, large ionaccessible surface area, and fast charge transfer, lead to high performance under the premise of high rate capability in supercapacitor. This silica-assisted strategy can also work on other preprepared corresponding templates that have a different architecture to prepare core−shell carbon tubes, carbon spheres, and carbon rods with a bulge structure.

show abstract

Section: Results and Discussionmentioning

confidence: 98%

Silica-Assisted Controlled Engineering of Nitrogen-Doped Carbon Cages with Bulges for High-Performance Supercapacitors

Chen

Gao

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…As shown in Figure S9, it can maintain at 91.1% after 5000 cycles at a high current density of 2 A g –1 . Based on the two-electrode experiment, the Ragone diagram (Figure d) of the corresponding power and energy densities shows that the energy density was 24.7 and 15.1 Wh kg –1 at a power density of 604 and 1012 W kg –1 , which enters the property sphere of a battery and is higher than that of many other electrode materials. ,,− …”

Section: Resultsmentioning

confidence: 99%

Reasonable Construction of Hollow Carbon Spheres with an Adjustable Shell Surface for Supercapacitors

Chen

Gao

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Hollow carbon spheres (HCS) manifest specific merit in achieving large interior void space, high permeability, wide contactable area, and strong stacking ability with negligible aggregation and have attracted attention due to their high supercapacitor activity. As the key factor affecting supercapacitor performance, the surface chemical properties, shell thickness, roughness, and pore volumes of HCS are the focus of research in this field. Herein, the surface chemical properties and structures of HCS are simultaneously adjusted by a feasible and simple process of in situ activation during assembly of resin and potassium chloride (KCl). This strategy involves KCl participating in resin polymerization and the superior performance of potassium species on activating carbon. The surface N/O content, thickness, defects, and roughness degree of HCS can be controlled by adjusting the dosage of KCl. Electrochemical tests show that optimized HCS has suitable roughness, high surface area, and abundant surface N/O functional groups, which endow it with excellent electrochemical capacitance properties, showing its high potential in supercapacitors.

show abstract

“…Direct carbonization of plant tissue (such as hazelnut shell, [ 64 ] coconut shell, [ 65 ] watermelon rind, [ 66 ] straw, [ 67 ] bamboo, [ 68 ] sawdust, [ 69 ] leaves, [ 70 ] flowers, [ 71 ] seeds, [ 72 ] walnut septum, [ 73 ] sodium alginate, [ 74 ] etc.) or animal wastes is also an approach to prepare porous carbon.…”

Section: Ac‐based Electrode Materialsmentioning

confidence: 99%

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Zhao

Liu

et al. 2022

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Supercapacitors (SCs), an important kind of electrochemical energy storage device, are featured with high power density, rapid charging and discharging, and ultralong cycling lifespan and have been widely applied in multiscenario energy storage and output systems, such as portable consumer electronics, electric vehicles, and reservoir setups for green and sustainable energy resources. Among their components, electrode materials are of primary importance in dictating their performances. Owing to good electric conductivity, achievably large specific surface area, low cost, chemical stability, and easy loading with other electrochemically active species, various carbon nanomaterials, including activated carbons, carbon nanotubes, graphene, and other porous carbons, are promising electrode materials in the fabrication of high-performance SCs. In fact, the past decade has witnessed enormous efforts in the development of highperformance carbon-based SC electrode materials and great progresses achieved in the field. In this review, recent advances on these carbon-based SCs are summarized through a number of selected representative works. In each one, the unique preparation method, structural features, and their correlations to electrochemical properties and final SC performance are presented and discussed. At the end of the review, the challenges and future developing prospects are briefly outlined.

show abstract

A novel strategy combining electrospraying and one-step carbonization for the preparation of ultralight honeycomb-like multilayered carbon from biomass-derived lignin

Cited by 48 publications

References 58 publications

Silica-Assisted Controlled Engineering of Nitrogen-Doped Carbon Cages with Bulges for High-Performance Supercapacitors

Silica-Assisted Controlled Engineering of Nitrogen-Doped Carbon Cages with Bulges for High-Performance Supercapacitors

Reasonable Construction of Hollow Carbon Spheres with an Adjustable Shell Surface for Supercapacitors

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Contact Info

Product

Resources

About