scholarly journals Preparation of Porous Carbon Nanofiber Electrodes Derived from 6FDA-Durene/PVDF Blends and Their Electrochemical Properties

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 720
Author(s):  
Do Geun Lee ◽  
Byeong Chul Lee ◽  
Kyung-Hye Jung
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Polyvinylidene Fluoride ◽  
Carbon Nanofiber ◽  
High Surface ◽  
High Surface Area ◽  
High Specific Capacitance ◽  
High Energy ◽  
Storage Performance ◽  
Porous Carbon Nanofiber

Highly porous carbon electrodes for supercapacitors with high energy storage performance were prepared by using a new precursor blend of aromatic polyimide (PI) and polyvinylidene fluoride (PVDF). Supercapacitor electrodes were prepared through the electrospinning and thermal treatment of the precursor blends of aromatic PI and PVDF. Microstructures of the carbonized PI/PVDF nanofibers were studied using Raman spectroscopy. Nitrogen adsorption/desorption measurements confirmed their high surface area and porosity, which is critical for supercapacitor performance. Energy storage performance was investigated and carbonized PI/PVDF showed a high specific capacitance of 283 F/g at 10 mV/s (37% higher than that of PI) and an energy density of 11.3 Wh/kg at 0.5 A/g (27% higher than that of PI) with high cycling stability.

scholarly journals TiO2-decorated porous carbon nanofiber interlayer for Li–S batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (28) ◽  
pp. 16570-16575
Author(s):  
Meltem Yanilmaz
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Porous Carbon ◽  
Carbon Nanofiber ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Systems ◽  
Porous Carbon Nanofiber ◽  
Lithium Sulfur

Lithium–sulfur (Li–S) batteries are the most promising energy storage systems owing to their high energy density.

scholarly journals Liquid Phase Synthesis of CoP Nanoparticles with High Electrical Conductivity for Advanced Energy Storage

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Guo-Qun Zhang ◽  
Bo Li ◽  
Mao-Cheng Liu ◽  
Shang-Ke Yuan ◽  
Leng-Yuan Niu
Keyword(s):  
Electrical Conductivity ◽  
Energy Storage ◽  
Liquid Phase ◽  
Specific Capacitance ◽  
Current Density ◽  
High Surface ◽  
High Surface Area ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Materials

Transition metal phosphide alloys possess the metalloid characteristics and superior electrical conductivity and are a kind of high electrical conductive pseudocapacitive materials. Herein, high electrical conductive cobalt phosphide alloys are fabricated through a liquid phase process and a nanoparticles structure with high surface area is obtained. The highest specific capacitance of 286 F g−1 is reached at a current density of 0.5 A g−1. 63.4% of the specific capacitance is retained when the current density increased 16 times and 98.5% of the specific capacitance is maintained after 5000 cycles. The AC//CoP asymmetric supercapacitor also shows a high energy density (21.3 Wh kg−1) and excellent stability (97.8% of the specific capacitance is retained after 5000 cycles). The study provides a new strategy for the construction of high-performance energy storage materials by enhancing their intrinsic electrical conductivity.

scholarly journals Ultrafine MoO2 nanoparticles encapsulated in a hierarchically porous carbon nanofiber film as a high-performance binder-free anode in lithium ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37556-37561
Author(s):  
Xin Chen ◽  
Guojun Gao ◽  
Zhipeng Wu ◽  
Jun Xiang ◽  
Xiaoqiang Li ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
Hierarchically Porous ◽  
Storage Performance ◽  
Porous Carbon Nanofiber ◽  
Binder Free ◽  
Nanofiber Film ◽  
Li Storage

A novel binder-free LIB anode made of ultrafine MoO2 nanoparticles encapsulated in hierarchically porous carbon nanofibers exhibits high Li-storage performance.

scholarly journals Preparation and Electrochemical Properties of Porous Carbon Nanofiber Electrodes Derived from New Precursor Polymer: 6FDA-TFMB

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1851
Author(s):  
Byeongil Jeon ◽  
Taehwa Ha ◽  
Dong Yun Lee ◽  
Myung-Seok Choi ◽  
Seung Woo Lee ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Carbon Nanofiber ◽  
High Energy ◽  
Maximum Energy ◽  
Cyclic Voltammograms ◽  
Precursor Polymer ◽  
Common Precursor ◽  
Porous Carbon Nanofiber ◽  
Binder Free ◽  
Electrochemical Double Layer

Porous carbon nanofibers (CNFs) with high energy storage performance were fabricated with a single precursor polymer, 6FDA-TFMB, without the use of any pore-generating materials. 6FDA-TFMB was synthesized, electrospun, and thermally treated to produce binder-free CNF electrodes for electrochemical double-layer capacitors (EDLCs). Highly porous CNFs with a surface area of 2213 m2 g−1 were prepared by steam-activation. CNFs derived from 6FDA-TFMB showed rectangular cyclic voltammograms with a specific capacitance of 292.3 F g−1 at 10 mV s−1. It was also seen that CNFs exhibit a maximum energy density of 13.1 Wh kg−1 at 0.5 A g−1 and power density of 1.7 kW kg−1 at 5 A g−1, which is significantly higher than those from the common precursor polymer, polyacrylonitrile (PAN).

scholarly journals Preparation and Carbon-Dependent Supercapacitive Behaviour of Nanohybrid Materials between Polyoxometalate and Porous Carbon Derived from Zeolitic Templates

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 81 ◽  
Author(s):  
Heng Wang ◽  
Takeshi Shimizu ◽  
Hirofumi Yoshikawa
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
High Performance ◽  
High Surface ◽  
Three Dimensional ◽  
Lithium Ion ◽  
High Energy ◽  
Molecular Cluster ◽  
Energy Storage Devices ◽  
Nanohybrid Materials

An electrochemical cell combining the energy storage characteristics of the chemical redox reaction and a physical capacitor effect presents advantages including high energy and power densities, and long durability. In this study, we prepared nanohybrid materials between polyoxometalate (POM) and porous carbon, which have different porous structures and pore sizes, using different zeolitic templates. The POM molecules were loaded inside the porous carbon, and these POM/carbon nanohybrid materials were used as cathode active materials for lithium–ion batteries (LIBs). The performance of these molecular cluster batteries (MCBs) was significantly dependent on the porous carbon. Operando X-ray absorption fine structure (XAFS) and 7Li solid-state nuclear magnetic resonance (NMR) measurements of the POM/carbon-MCBs revealed that three-dimensional porous carbon with high surface areas can improve the performance. The results highlight the remarkable performance of porous carbon with a three-dimensionally-linked pore network structure as an additive for supercapacitors to realise high-performance energy storage devices.

scholarly journals Flexible MnO Nanoparticle anchored N-doped Porous Carbon Nanofiber Interlayers for Superior-performance Lithium Metal Anodes

2021 ◽  
Author(s):  
Jing Yan ◽  
Min Liu ◽  
Nanping Deng ◽  
Liyuan Wang ◽  
Alain Sylvestre ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Carbon Nanofiber ◽  
Storage Systems ◽  
Superior Performance ◽  
Rapid Progress ◽  
Lithium Metal ◽  
Energy Storage Systems ◽  
Porous Carbon Nanofiber ◽  
Lithium Metal Anodes

The mounting requirements for electric apparatus and vehicles stimulate the rapid progress of energy storage systems. Lithium (Li) metal is regarded as one of the most prospective anodes for high...

Ion-matching porous carbons with ultra-high surface area and superior energy storage performance for supercapacitors

2019 ◽  
Vol 7 (15) ◽  
pp. 9163-9172 ◽  
Author(s):  
Lifeng Zhang ◽  
Yu Guo ◽  
Kechao Shen ◽  
Jinghao Huo ◽  
Yi Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
High Specific Surface Area ◽  
Porous Carbons ◽  
Storage Performance

Polypyrrole (PPy)-derived porous carbons with an ion-matching micropore diameter exhibit ultra-high specific surface area and capacitance when used in supercapacitors.

scholarly journals Li–fluorine codoped electrospun carbon nanofibers for enhanced hydrogen storage

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4053-4061
Author(s):  
Xiaohong Chen ◽  
Zhiyong Xue ◽  
Kai Niu ◽  
Xundao Liu ◽  
Wei lv ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanofibers ◽  
Porous Carbon ◽  
Carbon Nanofiber ◽  
Storage Performance ◽  
Porous Carbon Nanofiber ◽  
Hydrogen Storage Performance

We developed a facile, yet general, approach for preparing Li–fluorine codoped porous carbon nanofiber (Li–F–PCNF) composites, which showed excellent hydrogen storage performance.

scholarly journals Cinnamon-Derived Hierarchically Porous Carbon as an Effective Lithium Polysulfide Reservoir in Lithium–Sulfur Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1220 ◽  
Author(s):  
Ranjith Thangavel ◽  
Aravindaraj G. Kannan ◽  
Rubha Ponraj ◽  
Karthikeyan Kaliyappan ◽  
Won-Sub Yoon ◽  
...  
Keyword(s):  
Surface Area ◽  
Porous Carbon ◽  
Pore Volume ◽  
High Surface ◽  
Electronic Conductivity ◽  
High Surface Area ◽  
High Energy ◽  
Superior Performance ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium–sulfur batteries are attractive candidates for next generation high energy applications, but more research works are needed to overcome their current challenges, namely: (a) the poor electronic conductivity of sulfur, and (b) the dissolution and migration of long-chain polysulfides. Inspired by eco-friendly and bio-derived materials, we synthesized highly porous carbon from cinnamon sticks. The bio-carbon had an ultra-high surface area and large pore volume, which serves the dual functions of making sulfur particles highly conductive and acting as a polysulfide reservoir. Sulfur was predominantly impregnated into pores of the carbon, and the inter-connected hierarchical pore structure facilitated a faster ionic transport. The strong carbon framework maintained structural integrity upon volume expansion, and the unoccupied pores served as polysulfide trapping sites, thereby retaining the polysulfide within the cathode and preventing sulfur loss. These mechanisms contributed to the superior performance of the lithium-sulfur cell, which delivered a discharge capacity of 1020 mAh g−1 at a 0.2C rate. Furthermore, the cell exhibited improved kinetics, with an excellent cycling stability for 150 cycles with a very low capacity decay of 0.10% per cycle. This strategy of combining all types of pores (micro, meso and macro) with a high pore volume and ultra-high surface area had a synergistic effect on improving the performance of the sulfur cathode.

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