Noble metal-based materials in high-performance supercapacitors

2017 ◽  
Vol 4 (1) ◽  
pp. 33-51 ◽  
Author(s):  
Yan Yan ◽  
Tianyi Wang ◽  
Xinran Li ◽  
Huan Pang ◽  
Huaiguo Xue
Keyword(s):  
Noble Metal ◽  
High Performance ◽  
Noble Metals ◽  
Recent Progress ◽  
Composite Electrode ◽  
Electrode Materials

This review comprehensively summarizes and evaluates the recent progress in the research of noble metals and their composite electrode materials for supercapacitors.

Porous diatomite-mixed 1,4,5,8-NTCDA nanowires as high-performance electrode materials for lithium-ion batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (34) ◽  
pp. 15881-15891 ◽  
Author(s):  
Yong Xu ◽  
Jun Chen ◽  
Ze'en Xiao ◽  
Caixia Ou ◽  
Weixia Lv ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Rate Performance ◽  
Transfer Impedance ◽  
Lower Charge

A novel porous diatomite composite electrode composed of NTCDA nanowires exhibits lower charge transfer impedance, higher capacity and better rate performance.

scholarly journals Discharged Na5V12O32 Nanowire Arrays Coated with Cu-Cu2O for High Performance Lithium-Ion Batteries

2021 ◽  
Author(s):  
Guangjie Yang ◽  
Mengmeng Cui ◽  
Tao Han ◽  
dong fang ◽  
Xingjie Lu ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Coating Layer ◽  
Lithium Ion ◽  
Nanowire Arrays ◽  
Battery Electrode ◽  
Cu2o Nanoparticles ◽  
Enhanced Electrochemical Performance

Abstract Sodium vanadate have been widely used as a lithium-ion battery anode. However, its further application is restricted by the capacity attenuation during cycles because of its easy solubility in electrolyte, huge structural change, and low conductivity. Here, a lithium-ion battery electrode based on Cu-Cu2O coated Na5V12O32 nanowire arrays using a predischarge-electrodeposition method is freported. Remarkably, in the Cu-Cu2O@Na5V12O32 electrode, the Na5V12O32 nanowires function as the skeleton, and Cu-Cu2O nanoparticles function as the coating layer. At a specific current of 50 mA g-1, the composite electrode exhibits discharge and charge capacity of 837 and 821 mAh g-1 after 80 cycles, respectively, which is much higher than that of the Na5V12O32 nanowires electrode. This research provides a new pathway to explore electrode materials with enhanced electrochemical performance.

Cobalt-based compounds and composites as electrode materials for high-performance electrochemical capacitors

2014 ◽  
Vol 2 (41) ◽  
pp. 17212-17248 ◽  
Author(s):  
Kian Keat Lee ◽  
Wee Shong Chin ◽  
Chorng Haur Sow
Keyword(s):  
High Performance ◽  
Recent Progress ◽  
Electrode Materials ◽  
Electrochemical Capacitors

Recent progress, achievements, challenges and outlook in the (re)search of high performance cobalt-based compounds and composites for electrochemical capacitors.

scholarly journals Recent Progress on Spray Pyrolysis for High Performance Electrode Materials in Lithium and Sodium Rechargeable Batteries

2016 ◽  
Vol 7 (7) ◽  
pp. 1601578 ◽  
Author(s):  
Yujie Zhu ◽  
Seung Ho Choi ◽  
Xiulin Fan ◽  
Jaeho Shin ◽  
Zhaohui Ma ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
High Performance ◽  
Recent Progress ◽  
Electrode Materials ◽  
Rechargeable Batteries

scholarly journals Development of 3D-Printed MWCNTs/AC/BNNTs Ternary Composite Electrode Material with High-Capacitance Performance

2021 ◽  
Vol 11 (6) ◽  
pp. 2636
Author(s):  
Asrar Alam ◽  
Ghuzanfar Saeed ◽  
Seong Min Hong ◽  
Sooman Lim
Keyword(s):  
Electrochemical Performance ◽  
Current Density ◽  
Electrode Material ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Potential Candidate ◽  
Ternary Composite ◽  
Capacitance Performance ◽  
Capacitive Properties

Activated carbon (AC) and multiwalled carbon nanotubes (MWCNTs) have been extensively investigated in recent decades as electrical double-layer capacitor (EDLC) electrode materials for supercapacitors, owing to their superior capacitive properties and cycling stability performance. However, in the modern electronics industry, ternary electrode materials have been designed to develop high-performance and efficient energy storage devices. EDLC-based ternary materials are of great importance, where all the present components participate both individually and as a multicomponent electrode system to promote high-electrochemical performance electrode materials. In this study, we have incorporated an optimized content of boron nitride nanotube (BNNT) powder into a binary material composed of AC and MWCNTs to enhance their electrochemical performance using a pneumatic printer. The printed MWCNTs/AC/BNNTs ternary composite electrode material has shown a maximum specific capacitance of 262 F g−1 at a minimum current density of 1 A g−1, with a capacitance retention of 49.61% at a maximum current density of 10 A g−1. These results demonstrate that the printable MWCNTs/AC/BNNTs ternary composite electrode material is a potential candidate for the development of high-performance supercapacitors.

High Performance Supercapacitor Electrode Materials Based on Activated Carbon and Conducting Polypyrrole

2015 ◽  
Vol 645-646 ◽  
pp. 1150-1155 ◽  
Author(s):  
Wen Tao Yuan ◽  
Ya Jie Yang ◽  
Yong Long Qiu ◽  
Jian Hua Xu ◽  
Wen Yao Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Synergistic Effect ◽  
Electrochemical Performance ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Uniform Structure ◽  
Discharge Process ◽  
Supercapacitor Electrode ◽  
Supercapacitor Electrode Materials

The traditional supercapacitor is made of activated carbon, which shows lower specific capacity and higher resistance. In this paper, we demonstrated preparation of high performance supercapacitor electrode materials based on activated carbon and conducting polymer polypyrrole (ppy). In order to obtain well dispersion of ppy in activated carbon for lower resistance of electrode, a high-speed agate beads milling process was used to mix the ppy and porous carbon powder. By controlling the synergistic effect between ppy and activated carbon, a uniform structure composite electrode was prepared and the performance of this composite based supercapacitor was investigated. Compared with pure activated electrode, the obvious electrochemical performance improvement was achieved in composite electrode after the introduction of ppy. It has been found that electrode based on this composite has a maximum specific capacitance about 159 F/g, which was higher than pure activated carbon, and exhibited low resistance about 3.35 Ohm. The cycle performance results revealed that a 142 F/g (more than 88% of initial capacitance) capacitance was kept in composite electrode after 1000 cycles charge/discharge process. We conclude that the excellent synergistic effect between activated carbon and ppy resulted in superior electrochemical performance of composite electrode. Furthermore, the simple preparing method of composite electrode for supercapacitor assembly has potential commercial applications.

Unveiling the SEI Formation in a Potassium Ion Battery Using Distribution of Relaxation Time

2020 ◽  
Author(s):  
Yuhui Chen ◽  
Chuanchao Sheng ◽  
Fengjiao Yu ◽  
Chunmei Li ◽  
Heng Zhang ◽  
...  
Keyword(s):  
Relaxation Time ◽  
High Performance ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Low Cost ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Sei Layer

Abstract Understanding of solid electrolyte interphase (SEI) formation process in novel battery systems is of primary importance. Alongside increasing powerful in-situ techniques, searching for readily-accessible, non-invasive, and low-cost tools to probe battery chemistry is highly demanded. Here, we applied distribution of relaxation time (DRT) analysis to interpret in-situ electrochemical impedance spectroscopy results during cycling, which is able to distinguish various electrochemical processes based on their time constants. By building direct link between SEI layer and the cell performances, it allows us track the formation and evolution process of SEI layer, diagnose the failure of cell, and unveil the reaction mechanism. For instance, in a K-ion cell using SnS2/N-doped reduced graphene oxide (N-rGO) composite electrode, we found that the ion-transport in the electrolyte phase is the main reason of cell deterioration. In the electrolyte with potassium bis(fluorosulfonyl)imide (KFSI), the porous structure of the composite electrode was reinforced by rapid formation of a robust SEI layer at SnS2/electrolyte interface and thus the KFSI-based cell delivers a high capacity and good cycleability. This method lowers the barrier of in-situ EIS analysis, and helps public researchers to explore high-performance electrode materials.

Sign in / Sign up

Export Citation Format

Share Document