Surfactant‐in‐Polymer Templating for Fabrication of Carbon Nanofibers with Controlled Interior Substructures: Designing Versatile Materials for Energy Applications

Small ◽  
2021 ◽  
pp. 2007775
Author(s):  
Eunseo Heo ◽  
Seonmyeong Noh ◽  
Unhan Lee ◽  
Thanh‐Hai Le ◽  
Haney Lee ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Energy Applications ◽  
Polymer Templating

Growth and Annealing Properties of Carbon Nanofibers on Carbon Black by Using Chemical Vapour Deposition

2019 ◽  
Author(s):  
Jedeok ◽  
Todhiyuki ◽  
Hidenobu Nakao
Keyword(s):  
Cyclic Voltammetry ◽  
Carbon Black ◽  
Carbon Nanofibers ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Annealing Temperature ◽  
Chemical Vapour ◽  
Ni Catalysts ◽  
Energy Applications ◽  
Different Temperatures

Carbon nanofibers (CNFs) were grown as tip growths on carbon black (CB; XC-72R) (CNF-CB) by using chemical vapour deposition (CVD) with Ni catalysts. The as-grown CNF-CB composites were annealed at different temperatures. The crystallinity and thermal properties of the CNF-CB composite increased with an increase in the annealing temperature. The micropore and mesopore areas of the CNF-CB composites decreased and increased, respectively, as compared to those of CB only. The CNF-CB composite annealed at 1600 °C had a higher current density than only CB did, as determined by using cyclic voltammetry (CV). The CNF-CB composites should be extremely useful in various energy applications, such as fuel cells, capacitors, and batteries.

Key issues facing electrospun carbon nanofibers in energy applications: on-going approaches and challenges

Nanoscale ◽  
2020 ◽  
Vol 12 (25) ◽  
pp. 13225-13248 ◽  
Author(s):  
Guangdi Nie ◽  
Xinwei Zhao ◽  
Yaxue Luan ◽  
Jiangmin Jiang ◽  
Zongkui Kou ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Carbon Nanofibers ◽  
Energy Applications ◽  
Recent Advances ◽  
Key Issues

Recent advances in the on-going approaches for activating electrospun carbon nanofibers and addressing the key issues faced are critically examined in connection with their electrochemical performance as supercapacitor electrodes.

Versatile Graphitized Carbon Nanofibers in Energy Applications

2022 ◽  
Author(s):  
Surbhi Sharma ◽  
Soumen Basu ◽  
Nagaraj P. Shetti ◽  
Kunal Mondal ◽  
Ashutosh Sharma ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Energy Applications ◽  
Graphitized Carbon

Preparation and Application of Carbon Nanofibers-supported Palladium Nanoparticles Catalysts Based on Electrospinning

2014 ◽  
Vol 29 (8) ◽  
pp. 814 ◽  
Author(s):  
GUO Li-Ping ◽  
BAI Jie ◽  
LIANG Hai-Ou ◽  
LI Chun-Ping ◽  
SUN Wei-Yan ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Palladium Nanoparticles ◽  
Supported Palladium

Cytocompatibility of Carbon Nanofiber Materials for Neural Applications

2003 ◽  
Vol 774 ◽  
Author(s):  
Janice L. McKenzie ◽  
Michael C. Waid ◽  
Riyi Shi ◽  
Thomas J. Webster
Keyword(s):  
Carbon Fiber ◽  
Surface Energy ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
Carbon Nanofiber ◽  
Fiber Composite ◽  
Scar Tissue ◽  
Pc 12 Cells ◽  
Low Surface Energy ◽  
Poly Carbonate

AbstractSince the cytocompatibility of carbon nanofibers with respect to neural applications remains largely uninvestigated, the objective of the present in vitro study was to determine cytocompatibility properties of formulations containing carbon nanofibers. Carbon fiber substrates were prepared from four different types of carbon fibers, two with nanoscale diameters (nanophase, or less than or equal to 100 nm) and two with conventional diameters (or greater than 200 nm). Within these two categories, both a high and a low surface energy fiber were investigated and tested. Astrocytes (glial scar tissue-forming cells) and pheochromocytoma cells (PC-12; neuronal-like cells) were seeded separately onto the substrates. Results provided the first evidence that astrocytes preferentially adhered on the carbon fiber that had the largest diameter and the lowest surface energy. PC-12 cells exhibited the most neurites on the carbon fiber with nanodimensions and low surface energy. These results may indicate that PC-12 cells prefer nanoscale carbon fibers while astrocytes prefer conventional scale fibers. A composite was formed from poly-carbonate urethane and the 60 nm carbon fiber. Composite substrates were thus formed using different weight percentages of this fiber in the polymer matrix. Increased astrocyte adherence and PC-12 neurite density corresponded to decreasing amounts of the carbon nanofibers in the poly-carbonate urethane matrices. Controlling carbon fiber diameter may be an approach for increasing implant contact with neurons and decreasing scar tissue formation.

Cytocompatibility and Material Properties of Poly-carbonate Urethane/Carbon Nanofiber Composites for Neural Applications

2003 ◽  
Vol 774 ◽  
Author(s):  
Janice L. McKenzie ◽  
Michael C. Waid ◽  
Riyi Shi ◽  
Thomas J. Webster
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanofibers ◽  
Material Properties ◽  
Carbon Nanofiber ◽  
Scar Tissue ◽  
Tissue Response ◽  
Positive Interactions ◽  
Weight Percentage ◽  
Poly Carbonate

AbstractCarbon nanofibers possess excellent conductivity properties, which may be beneficial in the design of more effective neural prostheses, however, limited evidence on their cytocompatibility properties exists. The objective of the present in vitro study was to determine cytocompatibility and material properties of formulations containing carbon nanofibers to predict the gliotic scar tissue response. Poly-carbonate urethane was combined with carbon nanofibers in varying weight percentages to provide a supportive matrix with beneficial bulk electrical and mechanical properties. The substrates were tested for mechanical properties and conductivity. Astrocytes (glial scar tissue-forming cells) were seeded onto the substrates for adhesion. Results provided the first evidence that astrocytes preferentially adhered to the composite material that contained the lowest weight percentage of carbon nanofibers. Positive interactions with neurons, and, at the same time, limited astrocyte functions leading to decreased gliotic scar tissue formation are essential for increased neuronal implant efficacy.

Cost Effective Synthesis and Fabrication of Phase-Pure Kesterite Cu2-xZn1.3SnS4 P-type Absorber Layer Thin Films by Solvent Based Process Technique for Photovoltaic Solar Energy Applications

2018 ◽  
Vol 7 (4) ◽  
pp. 36
Author(s):  
B. Khadambari ◽  
S. S. Bhattacharya
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Absorber Layer ◽  
Window Layer ◽  
Energy Applications ◽  
Process Technique ◽  
Absorber Material ◽  
Effective Synthesis ◽  
P Type

Solar has become one of the fastest growing renewable energy sources. With the push towards sustainability it is an excellent solution to resolve the issue of our diminishing finite resources. Alternative photovoltaic systems are of much importance to utilize solar energy efficiently. The Cu-chalcopyrite compounds CuInS2 and CuInSe2 and their alloys provide absorber material of high absorption coefficients of the order of 105 cm-1. Cu2ZnSnS4 (CZTS) is more promising material for photovoltaic applications as Zn and Sn are abundant materials of earth’s crust. Further, the preparation of CZTS-ink facilitates the production of flexible solar cells. The device can be designed with Al doped ZnO as the front contact, n-type window layer (e.g. intrinsic ZnO); an n-type thin film buffer layer (e.g. CdS) and a p-type CZTS absorber layer with Molybdenum (Mo) substrate as back contact. In this study, CZTS films were synthesized by a non-vaccum solvent based process technique from a molecular-ink using a non toxic eco-friendly solvent dimethyl sulfoxide (DMSO). The deposited CZTS films were optimized and characterized by XRD, UV-visible spectroscopy and SEM.

Lossless Dynamic Models of the Quasi-Z-Source Converter Family

2011 ◽  
Vol 29 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Dmitri Vinnikov ◽  
Oleksandr Husev ◽  
Indrek Roasto
Keyword(s):  
Renewable Energy ◽  
Dynamic Models ◽  
Energy Applications

Lossless Dynamic Models of the Quasi-Z-Source Converter FamilyThis paper is devoted to the quasi-Z-source (qZS) converter family. Recently, the qZS-converters have attracted attention because of their specific properties of voltage boost and buck functions with a single switching stage, which could be especially beneficial in renewable energy applications. As main representatives of the qZS-converter family, the traditional quasi-Z-source inverter as well as two novel extended boost quasi-Z-source inverters are discussed. Lossless dynamic models of these topologies are presented and analyzed.

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