Hierarchical 3D Nanocomposites towards Advanced Electrochemical Energy Storage

2013 ◽  
Vol 1497 ◽  
Author(s):  
Jiahua Zhu ◽  
Suying Wei ◽  
Zhanhu Guo
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
Active Sites ◽  
Interfacial Polymerization ◽  
Layer Structure ◽  
Interfacial Interaction ◽  
Electrochemical Energy Storage ◽  
Diffusion Distance ◽  
Polyaniline Nanofibers ◽  
Polymerization Method

ABSTRACTPolyaniline nanofibers (PANI-NFs)/graphite oxide (GO) nanocomposites with excellent interfacial interaction and elongated fiber structures were synthesized via a facile interfacial polymerization method. This method efficiently exfoliated the expanded layer structure of GO into individual sheet and thus significantly enhanced the specific surface area. The reduced diameter of PANI-NFs in PANI-NF/GO than that of pure PANI-NFs could shorten the diffusion distance and enhance the electro-active sites. The PANI-NFs/GO hybrid materials showed orders of magnitude enhancement in capacitance and better cycling stability than that of individual GO and PANI-NF components.

scholarly journals Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor

Molecules ◽  
2019 ◽  
Vol 24 (12) ◽  
pp. 2263 ◽  
Author(s):  
Xiaoning Wang ◽  
Dan Wu ◽  
Xinhui Song ◽  
Wei Du ◽  
Xiangjin Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
Active Sites ◽  
High Performance ◽  
Electrode Materials ◽  
Carbon Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Chemical Properties ◽  
Combine Carbon

Polyaniline has been widely used in high-performance pseudocapacitors, due to its low cost, easy synthesis, and high theoretical specific capacitance. However, the poor mechanical properties of polyaniline restrict its further development. Compared with polyaniline, functionalized carbon materials have excellent physical and chemical properties, such as porous structures, excellent specific surface area, good conductivity, and accessibility to active sites. However, it should not be neglected that the specific capacity of carbon materials is usually unsatisfactory. There is an effective strategy to combine carbon materials with polyaniline by a hybridization approach to achieve a positive synergistic effect. After that, the energy storage performance of carbon/polyaniline hybridization material has been significantly improved, making it a promising and important electrode material for supercapacitors. To date, significant progress has been made in the synthesis of various carbon/polyaniline binary composite electrode materials. In this review, the corresponding properties and applications of polyaniline and carbon hybrid materials in the energy storage field are briefly reviewed. According to the classification of different types of functionalized carbon materials, this article focuses on the recent progress in carbon/polyaniline hybrid materials, and further analyzes their corresponding properties to provide guidance for the design, synthesis, and component optimization for high-performance supercapacitors.

Reverse synthesis of star anise-like cobalt doped Cu-MOF/Cu2+1O hybrid materials based on a Cu(OH)2 precursor for high performance supercapacitors

2019 ◽  
Vol 7 (8) ◽  
pp. 3815-3827 ◽  
Author(s):  
Xueying Cao ◽  
Liang Cui ◽  
Bingping Liu ◽  
Ying Liu ◽  
Dedong Jia ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Materials ◽  
High Performance ◽  
Electrochemical Energy Storage ◽  
Star Anise ◽  
Energy Storage Properties ◽  
Novel Strategy ◽  
Storage Properties ◽  
Electrochemical Energy

A vertically oriented star anise-like MOF-based material is prepared by a novel strategy using Cu(OH)2 as the template and precursor, which shows promising electrochemical energy storage properties.

A three-dimensional multilevel nanoporous NiCoO2/Ni hybrid for highly reversible electrochemical energy storage

2019 ◽  
Vol 7 (27) ◽  
pp. 16222-16230 ◽  
Author(s):  
Binbin Liu ◽  
Jiagang Hou ◽  
Tingting Zhang ◽  
Caixia Xu ◽  
Hong Liu
Keyword(s):  
Energy Storage ◽  
Electron Transport ◽  
Active Sites ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
One Step ◽  
Electrochemical Energy

A three dimensional (3D) multilevel nanoporous NiCoO2 cathode with a conductive Ni matrix is made by a one-step dealloying strategy. Benefiting from the 3D interlinking configurations for ion and electron transport, and the abundant active sites, the as-made NiCoO2/Ni cathode demonstrates superior energy storage performances.

scholarly journals Ultrathin Ti3C2Tx (MXene) Nanosheet-Wrapped NiSe2 Octahedral Crystal for Enhanced Supercapacitor Performance and Synergetic Electrocatalytic Water Splitting

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Hanmei Jiang ◽  
Zegao Wang ◽  
Qian Yang ◽  
Luxi Tan ◽  
Lichun Dong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Active Sites ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
Interfacial Interaction ◽  
Energy Storage And Conversion ◽  
Excellent Electrochemical Performance ◽  
Strong Interfacial Interaction ◽  
Supercapacitor Performance ◽  
Metal Selenides

Abstract Metal selenides, such as NiSe2, have exhibited great potentials as multifunctional materials for energy storage and conversation. However, the utilization of pure NiSe2 as electrode materials is limited by its poor cycling stability, low electrical conductivity, and insufficient electrochemically active sites. To remedy these defects, herein, a novel NiSe2/Ti3C2Tx hybrid with strong interfacial interaction and electrical properties is fabricated, by wrapping NiSe2 octahedral crystal with ultrathin Ti3C2Tx MXene nanosheet. The NiSe2/Ti3C2Tx hybrid exhibits excellent electrochemical performance, with a high specific capacitance of 531.2 F g−1 at 1 A g−1 for supercapacitor, low overpotential of 200 mV at 10 mA g−1, and small Tafel slope of 37.7 mV dec−1 for hydrogen evolution reaction (HER). Furthermore, greater cycling stabilities for NiSe2/Ti3C2Tx hybrid in both supercapacitor and HER have also been achieved. These significant improvements compared with unmodified NiSe2 should be owing to the strong interfacial interaction between NiSe2 octahedral crystal and Ti3C2Tx MXene, which provides enhanced conductivity, fast charge transfer as well as abundant active sites, and highlight the promising potentials in combinations of MXene with metal selenides for multifunctional applications such as energy storage and conversion.

Polyaniline nanofibers and their self-assembly into a film to be used as ammonia sensor

RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 103185-103191 ◽  
Author(s):  
Changqing Yin ◽  
Guotao Duan ◽  
Weiping Cai
Keyword(s):  
Electrical Properties ◽  
Self Assembly ◽  
Interfacial Polymerization ◽  
Ammonia Sensor ◽  
Polyaniline Nanofibers ◽  
Polymerization Method ◽  
Hcl Solution

In this research, polyaniline nanofibers were synthesized by the HCl assisted interfacial polymerization method, where the morphologies and electrical properties of the nanofibers were controlled by the concentration of the HCl solution.

Sign in / Sign up

Export Citation Format

Share Document