Cellulose Nanofibers Derived Carbon Aerogel with 3D Multiscale Pore Architecture for High-Performance Supercapacitors

Nanoscale ◽  
2021 ◽  
Author(s):  
Lumin Chen ◽  
Hou-Yong Yu ◽  
Ziheng Li ◽  
Xiang Chen ◽  
Wenlong Zhou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Cellulose Nanofibers ◽  
Rate Capability ◽  
Carbon Aerogel ◽  
Large Specific Surface Area ◽  
Hierarchical Porous Structure ◽  
Pore Architecture ◽  
Hierarchical Porous

Carbon materials are highly promising electrode materials for supercapacitors, due to their hierarchical porous structure and large specific surface area. However, the limited specific capacitance and inferior rate capability significantly...

scholarly journals High-performance asymmetric supercapacitor made of NiMoO4 nanorods@Co3O4 on a cellulose-based carbon aerogel

2020 ◽  
Vol 11 ◽  
pp. 240-251 ◽  
Author(s):  
Meixia Wang ◽  
Jing Zhang ◽  
Xibin Yi ◽  
Benxue Liu ◽  
Xinfu Zhao ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Rate Capability ◽  
Negative Electrode ◽  
Carbon Aerogel ◽  
Maximum Energy ◽  
Asymmetric Supercapacitor ◽  
Hierarchical Porous Structure ◽  
Ternary Composite ◽  
Hierarchical Porous

In this study, a new nanoporous material comprising NiMoO4 nanorods and Co3O4 nanoparticles derived from ZIF-67 supported by a cellulose-based carbon aerogel (CA) has been successfully synthesized using a two-step hydrothermal method. Due to its chemical composition, the large specific surface and the hierarchical porous structure, the NiMoO4@Co3O4/CA ternary composite yields electrodes with an enhanced specific capacitance of 436.9 C/g at a current density of 0.5 A/g and an excellent rate capability of 70.7% capacitance retention at 5.0 A/g. Moreover, an advanced asymmetric supercapacitor (ASC) is assembled using the NiMoO4@Co3O4/CA ternary composite as the positive electrode and activated carbon as the negative electrode. The ASC device exhibits a large capacitance of 125.4 F/g at 0.5 A/g, a maximum energy density of 34.1 Wh/kg at a power density of 208.8 W/kg as well as a good cyclic stability (84% after 2000 cycles), indicating its wide applicability in energy storage. Finally, our results provide a general approach to the construction of CA and MOF-based composite materials with hierarchical porous structure for potential applications in supercapacitors.

Porous nitrogen-doped hollow carbon spheres derived from polyaniline for high performance supercapacitors

2014 ◽  
Vol 2 (15) ◽  
pp. 5352-5357 ◽  
Author(s):  
Jinpeng Han ◽  
Guiyin Xu ◽  
Bing Ding ◽  
Jin Pan ◽  
Hui Dou ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Nitrogen Doping ◽  
Electrode Materials ◽  
Carbon Spheres ◽  
Hierarchical Porous Structure ◽  
Nitrogen Doped ◽  
Hierarchical Porous ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

The porous nitrogen-doped hollow carbon spheres derived from polyaniline are promising electrode materials for high performance supercapacitors due to their hierarchical porous structure and nitrogen-doping.

scholarly journals Hazardous Petroleum Sludge-Derived Nitrogen and Oxygen Co-Doped Carbon Material with Hierarchical Porous Structure for High-Performance All-Solid-State Supercapacitors

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2477
Author(s):  
Xiaoyu Li ◽  
Mingyang Zhang ◽  
Zhuowei Tan ◽  
Zhiqiang Gong ◽  
Peikun Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Porous Structure ◽  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Hierarchical Porous Structure ◽  
Petroleum Sludge ◽  
Synthesis Strategy ◽  
Hierarchical Porous ◽  
Co Doped

Rational design and sustainable preparation of high-performance carbonaceous electrode materials are important to the practical application of supercapacitors. In this work, a cost-effective synthesis strategy for nitrogen and oxygen co-doped porous carbon (NOC) from petroleum sludge waste was developed. The hierarchical porous structure and ultra-high surface area (2514.7 m2 g−1) of NOC electrode materials could provide an efficient transport path and capacitance active site for electrolyte ions. The uniform co-doping of N and O heteroatoms brought enhanced wettability, electrical conductivity and probably additional pseudo-capacitance. The as-obtained NOC electrodes exhibited a high specific capacitance (441.2 F g−1 at 0.5 A g−1), outstanding rate capability, and cycling performance with inconspicuous capacitance loss after 10,000 cycles. Further, the assembled all-solid-state MnO2/NOC asymmetrical supercapacitor device (ASC) could deliver an excellent capacitance of 119.3 F g−1 at 0.2 A g−1 under a wide potential operation window of 0–1.8 V with flexible mechanical stability. This ASC device yielded a superior energy density of 53.7 W h kg−1 at a power density of 180 W kg−1 and a reasonable cycling life. Overall, this sustainable, low-cost and waste-derived porous carbon electrode material might be widely used in the field of energy storage, now and into the foreseeable future.

Facile fabrication of carbon materials with hierarchical porous structure for high-performance supercapacitors

2021 ◽  
Vol 851 ◽  
pp. 156922 ◽  
Author(s):  
Pan Li ◽  
Cui-Ning Feng ◽  
Hong-Ping Li ◽  
Xiao-Li Zhang ◽  
Xiu-Cheng Zheng
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Carbon Materials ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous ◽  
Facile Fabrication

Bimetal-organic-framework derived CoTiO3/C hexagonal micro-prisms as high-performance anode materials for Metal ion batteries

2021 ◽  
Author(s):  
Baixue Ouyang ◽  
Tao Chen ◽  
Ran Qin ◽  
Penggao Liu ◽  
Xiaowen Fan ◽  
...  
Keyword(s):  
Metal Ion ◽  
Anode Materials ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Fast Rate ◽  
Low Cost ◽  
Rate Capability ◽  
Small Strain ◽  
Operating Voltage

Titanium based oxides are pomising electrode materials due to the appropriate operating voltage, small strain expansion, fast rate capability, safety, and low cost. Carbon materials exhibit a high cyclic stability...

scholarly journals TRA BAC ACTIVATED CARBON USED AS ELECTRODE MATERIAL IN AQUEOUS SUPERCAPACITOR

2018 ◽  
Vol 55 (1B) ◽  
pp. 257
Author(s):  
Van Man Tran
Keyword(s):  
Activated Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Size Fraction ◽  
Rate Capability ◽  
Carbon Aerogel ◽  
Double Layers ◽  
Potential Range ◽  
Electrical Double Layers ◽  
Coconut Shells

Carbon materials i.e. activated carbon, carbon aerogel, carbon nanotubes (CNTs)… store a high electric power and a great stable cyclability when they are used as electrode materials in electrical double–layers capacitor (EDLC). In this work, activated carbon from coconut shells which was cooperatively provided by the Tra Bac Joint Stock Corporation–TRABACO was investigated as electrode materials in EDLC. Raw carbon material with large particle size was crushed and sieved to obtain a 43 µm grain size fraction for electrochemical characterization. The symmetric EDLC configuration based on Tra Bac carbon was tested in Swagelok–type cell using KOH electrolyte in the potential range 0–1 V. The CV curves indicated that charges can be stored enormously with a high reversibility and stability. The high performance of EDLC based carbon in KOH electrolyte could be further improved by variation of electrode composition. The rate capability of the material was also studied under different current ranges. In our best results, a specific capacitance of 20 F/g was obtained at the charge–discharge current of 1 A/g. Even at very high applied current range, the capacitance dropped slowly, less than fifteen percent.

scholarly journals Nest-Like MnO2 Nanowire/Hierarchical Porous Carbon Composite for High-Performance Supercapacitor from Oily Sludge

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2715
Author(s):  
Xiaoyu Li ◽  
Dong Han ◽  
Zhiqiang Gong ◽  
Zhenbo Wang
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Electrode Materials ◽  
Hot Spot ◽  
Rate Capability ◽  
Precipitation Method ◽  
Oily Sludge ◽  
Hierarchical Porous Carbon ◽  
Capacitance Performance ◽  
Hierarchical Porous

In the aim to go beyond the performance tradeoffs of classic electric double-layer capacitance and pseudo-capacitance, composites made out of carbon and pseudo-capacitive materials have been a hot-spot strategy. In this paper, a nest-like MnO2 nanowire/hierarchical porous carbon (HPC) composite (MPC) was successfully fabricated by a controllable in situ chemical co-precipitation method from oily sludge waste. Due to the advantages of high surface area and fast charge transfer for HPC as well as the large pseudo-capacitance for MnO2 nanowires, the as-prepared MPC has good capacitance performance with a specific capacitance of 437.9 F g−1 at 0.5 A g−1, favorable rate capability of 79.2% retention at 20 A g−1, and long-term cycle stability of 78.5% retention after 5000 cycles at 5 A g−1. Meanwhile, an asymmetric supercapacitor (ASC) was assembled using MPC as the cathode while HPC was the anode, which exhibits a superior energy density of 58.67 W h kg−1 at the corresponding power density of 498.8 W kg−1. These extraordinary electrochemical properties highlight the prospect of our waste-derived composites electrode material to replace conventional electrode materials for a high-performance supercapacitor.

scholarly journals Construction of NiMoO4 nanorods@ZIF-67 derived Co3O4 supported on cellulose based carbon aerogel for asymmetric supercapacitors

2019 ◽  
Author(s):  
Meixia Wang ◽  
Jing Zhang ◽  
Xibin Yi ◽  
Benxue Liu ◽  
Xinfu Zhao ◽  
...  
Keyword(s):  
Porous Structure ◽  
Rate Capability ◽  
Carbon Aerogel ◽  
Hierarchical Porous Structure ◽  
Asymmetric Supercapacitors ◽  
Ternary Composite ◽  
Hierarchical Porous ◽  
Potential Applications ◽  
Large Capacitance ◽  
Good Rate Capability

In this study, NiMoO4 nanorods @ ZIF-67 derived Co3O4 material supported by cellulose based carbon aerogel (CA) is successfully synthesized by two-step hydrothermal method. Benefitting from hierarchical porous structure, large specific surface and chemical composition, the NiMoO4@Co3O4/CA ternary composite electrode delivers an enhanced specific capacitance of 1092.1 F/g at 0.5 A/g with the good rate capability (70.7% capacitance retention at 5.0 A/g). Besides, an advanced asymmetric supercapacitors (ASCs) is assembled by using the as-prepared NiMoO4@Co3O4/CA ternary composite as a positive electrode and activated carbon (AC) as negative. The results suggest that the ASCs device exhibits a large capacitance of 125.4 F/g at 0.5 A/g, a highest energy density of 34.1 Wh/kg at a power density of 208.8 W/kg as well as cycling stability (84% after 2000 cycles), suggesting its great applications in energy storage. Namely, our results may provide a general approach to construct carbon aerogel and various MOF based composite materials with hierarchical porous structure for potential applications in supercapacitor.

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