scholarly journals Recent Advances in Graphene and Conductive Polymer Composites for Supercapacitor Electrodes: A Review

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 947
Author(s):  
Xinwei Cai ◽  
Kangkang Sun ◽  
Yangshuai Qiu ◽  
Xuan Jiao
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Conductive Polymer ◽  
Life Cycles ◽  
Synthesis Methods ◽  
High Power Density ◽  
Facile Synthesis ◽  
Long Life ◽  
High Electric Conductivity

Supercapacitors (SCs) have generated a great deal of interest regarding their prospects for application in energy storage due to their advantages such as long life cycles and high-power density. Graphene is an excellent electrode material for SCs due to its high electric conductivity and highly specific surface area. Conductive polymers (CPs) could potentially become the next-generation SC electrodes because of their low cost, facile synthesis methods, and high pseudocapacitance. Graphene/CP composites show conspicuous electrochemical performance when used as electrode materials for SCs. In this article, we present and summarize the synthesis and electrochemical performance of graphene/CP composites for SCs. Additionally, the method for synthesizing electrode materials for better electrochemical performance is discussed.

scholarly journals A Review of Supercapacitors Based on Graphene and Redox-Active Organic Materials

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 703 ◽  
Author(s):  
Qi Li ◽  
Michael Horn ◽  
Yinong Wang ◽  
Jennifer MacLeod ◽  
Nunzio Motta ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
Dimensional Structure ◽  
Future Research ◽  
Synthesis Methods ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Redox Active ◽  
Recent Developments

Supercapacitors are a highly promising class of energy storage devices due to their high power density and long life cycle. Conducting polymers (CPs) and organic molecules are potential candidates for improving supercapacitor electrodes due to their low cost, large specific pseudocapacitance and facile synthesis methods. Graphene, with its unique two-dimensional structure, shows high electrical conductivity, large specific surface area and outstanding mechanical properties, which makes it an excellent material for lithium ion batteries, fuel cells and supercapacitors. The combination of CPs and graphene as electrode material is expected to boost the properties of supercapacitors. In this review, we summarize recent reports on three different CP/graphene composites as electrode materials for supercapacitors, discussing synthesis and electrochemical performance. Novel flexible and wearable devices based on CP/graphene composites are introduced and discussed, with an eye to recent developments and challenges for future research directions.

Facile synthesis of nickel–cobalt sulfide/reduced graphene oxide hybrid with enhanced capacitive performance

RSC Advances ◽  
2015 ◽  
Vol 5 (72) ◽  
pp. 58777-58783 ◽  
Author(s):  
Xiaoqing Cai ◽  
Xiaoping Shen ◽  
Lianbo Ma ◽  
Zhenyuan Ji ◽  
Lirong kong
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Cobalt Sulfide ◽  
Facile Synthesis ◽  
One Pot ◽  
Nickel Cobalt ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

A facile one-pot refluxing method was developed to prepare nickel–cobalt sulfide/reduced graphene oxide (RGO) hybrids. The as-synthesized NiCo2S4/RGO hybrids as electrode materials for supercapacitors exhibit excellent electrochemical performance.

Chain rigidity modification to promote the electrochemical performance of polymeric battery electrode materials

2019 ◽  
Vol 7 (17) ◽  
pp. 10581-10588 ◽  
Author(s):  
Zhihui Niu ◽  
Huaxi Wu ◽  
Lei Liu ◽  
Gaole Dai ◽  
Shiyun Xiong ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Power Density ◽  
High Power ◽  
Electrode Materials ◽  
High Power Density ◽  
Battery Materials ◽  
Chain Rigidity ◽  
Battery Electrode ◽  
Rigidity Modification

Tuning the chain rigidity enables high power density without sacrificing the volumetric energy density for polymeric battery materials.

scholarly journals Bendable UHF RFID tag antenna for retail garments using non-uniform meandered lines

2021 ◽  
Author(s):  
Manoj Kumar ◽  
ashwani sharma ◽  
Ignacio J. Garcia Zuazola
Keyword(s):  
Textile Industry ◽  
Low Cost ◽  
Wide Band ◽  
Life Cycles ◽  
Potential Candidate ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Long Read ◽  
Long Life ◽  
Read Range

A bendable UHF RFID tag antenna using non-uniform meandered lines for retail garments in the textile industry is presented. Based on an earlier UHF RFID tag antenna using nonuniform meandered lines, the proposed tag is fully bendable and aimed to be embedded in retail garments for long-life cycles. As a result, a relatively low cost, wide band, compactness and good conjugate matching with good dipole-like read range is presented. Results showed an antenna with a wide bandwidth of 900MHz and a long read range of 10.1m making the UHF RFID tag antenna using non-uniform meandered lines a potential candidate for retail garments in bendable applications of the textile industry. Simulations are corroborated by measurements and are in fairly agreement.

Sb-based electrode materials for rechargeable batteries

2018 ◽  
Vol 6 (18) ◽  
pp. 8159-8193 ◽  
Author(s):  
Zhiming Liu ◽  
Taeseup Song ◽  
Ungyu Paik
Keyword(s):  
Electrochemical Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Rechargeable Batteries

Sb-based materials are promising electrode candidates for rechargeable batteries because of their high electrochemical performance and relatively low cost.

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