An intrinsically stretchable and compressible Zn–air battery

2020 ◽  
Vol 56 (35) ◽  
pp. 4793-4796 ◽  
Author(s):  
Yueyang Wang ◽  
Jie Liu ◽  
Yuping Feng ◽  
Ningyuan Nie ◽  
Mengmeng Hu ◽  
...  
Keyword(s):  
Rechargeable Battery ◽  
Electrochemical Performances ◽  
Air Battery ◽  
First Time

An intrinsically 300% stretchable and 85% compressible Zn–air rechargeable battery with good electrochemical performances was fabricated for the first time.

scholarly journals Electrochemical Activity of a La0.9Ca0.1Co1−xFexO3Catalyst for a Zinc Air Battery Electrode

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Seungwook Eom ◽  
Seyoung Ahn ◽  
Sanghwan Jeong
Keyword(s):  
Oxygen Reduction ◽  
Electrochemical Measurement ◽  
Electrochemical Performances ◽  
Cathode Catalyst ◽  
Air Cathode ◽  
Substitution Level ◽  
Battery Electrode ◽  
Substitution Ratio ◽  
Air Battery ◽  
Battery Application

The optimum composition of cathode catalyst has been studied for rechargeable zinc air battery application. La0.9Ca0.1Co1−xFexO3  (x=0–0.4)perovskite powders were prepared using the citrate method. The substitution ratio of Co2+with Fe3+cations was controlled in the range of 0–0.4. The optimum substitution ratio of Fe3+cations was determined by electrochemical measurement of the air cathode composed of the catalyst, polytetrafluoroethylene (PTFE) binder, and Vulcan XC-72 carbon. The substitution by Fe enhanced the electrochemical performances of the catalysts. Considering oxygen reduction/evolution reactions and cyclability, we achieved optimum substitution level ofx=0.1in La0.9Ca0.1Co1−xFexO3.

Electrochemical performances of cobalt oxide–carbon nanotubes electrodes via different methods as negative material for alkaline rechargeable batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (90) ◽  
pp. 73410-73415 ◽  
Author(s):  
Yanan Xu ◽  
Yanyin Dong ◽  
Xiaofeng Wang ◽  
Yijing Wang ◽  
Lifang Jiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cobalt Oxide ◽  
Rechargeable Batteries ◽  
Electrochemical Performances ◽  
Negative Materials ◽  
Negative Material ◽  
First Time

Co3O4/CNTs samples are synthesized via different methods and investigated as negative materials for alkaline rechargeable batteries for the first time.

scholarly journals A Novel Open-Framework Cu-Ge-Based Chalcogenide Anode Material for Sodium-Ion Battery

Scanning ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Quan Sun ◽  
Lin Fu ◽  
Chaoqun Shang
Keyword(s):  
Electrode Materials ◽  
Reversible Capacity ◽  
Sodium Ion ◽  
Electrochemical Performances ◽  
Open Framework ◽  
Energy Storage Application ◽  
Potential Electrode ◽  
Fast Ion ◽  
First Time ◽  
Promising Electrode Material

Open-framework chalcogenides are potential electrode materials for sodium-ion batteries (SIBs) due to their architectures with fast-ion conductivity. Herein, we report on the successful synthesis of open-framework Cu-Ge-based chalcogenides [Cu8Ge6Se19](C5H12N)6 (CGSe) and the research of their energy storage application as SIB anodes for the first time. As a result, the CGSe anode exhibited good electrochemical performances such as high reversible capacity (463.3 mAh g−1), excellent rate performance, and considerable cycling stability. Our exploration not only develops a promising electrode material for SIBs, but also extends the application of open-framework chalcogenides.

Preparation of Graphene–Polypyrrole Hollow Sphere by Pickering Emulsion Method and Their Electrochemical Performances as Supercapacitor Electrode

NANO ◽  
2019 ◽  
Vol 14 (05) ◽  
pp. 1950056
Author(s):  
Sai Wu ◽  
Jie Tian ◽  
Xianglu Yin ◽  
Wei Wu
Keyword(s):  
Graphene Oxide ◽  
Hollow Sphere ◽  
Pickering Emulsion ◽  
Electrochemical Performances ◽  
Test Results ◽  
Supercapacitor Electrode ◽  
Emulsion Method ◽  
Pickering Emulsion Polymerization ◽  
First Time ◽  
A Current

Graphene–polypyrrole hollow sphere composite was synthesized for the first time via Pickering emulsion polymerization using graphene oxide as Pickering stabilizer. It was found that polypyrrole and graphene were well hybrid and all graphene–polypyrrole composites had a uniform hollow sphere structure, whose diameters gradually decreased as the pyrrole content decreased. The electrochemical properties of the composites as supercapacitor electrode were investigated. The test results displayed that the specific capacitance of the optimal ratio of composite could reach 238[Formula: see text]F/g at a current density of 1[Formula: see text]A/g, and a 90.7% capacitance retention could be achieved after 1500 cycles, which was a significant improvement compared with the 62.2% retention of pure polypyrrole.

scholarly journals Nanocomposites of Graphene with Ferrocene or Hemin: Preparation and Application in Electrochemical Sensing

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Ning Xia ◽  
Lin Liu ◽  
Zhifang Sun ◽  
Binbin Zhou
Keyword(s):  
Electrochemical Sensing ◽  
Electrochemical Energy Storage ◽  
Electrochemical Performances ◽  
Functionalized Graphene ◽  
Graphene Nanocomposites ◽  
Redox States ◽  
Electroactive Materials ◽  
Organic Complexes ◽  
Physicochemical And Structural Properties ◽  
First Time

Graphene has sparked tremendous interests across many fields such as biosensors, electrochemical energy storage, and electronics due to its extraordinary physicochemical and structural properties. The redox mediator-functionalized graphene composites may obtain highly electroactive materials with better conductivity, dispersion, and compatibility. Ferrocene and hemin, two iron-organic complexes, are the well-known mediators in view of their various properties, including reversibility, regeneration at low potential, and generation of stable redox states. Recently, it has been demonstrated that the use of ferrocene or hemin coupled with graphene can further improve the electrochemical performances of the developed sensors. In this contribution, we, for the first time, reviewed the preparation and applications of ferrocene/graphene and hemin/graphene nanocomposites in electrochemical sensing.

scholarly journals Waxberry-Like Nanosphere Li4Mn5O12 as High Performance Electrode Materials for Supercapacitors

2018 ◽  
Vol 8 (3) ◽  
pp. 32
Author(s):  
Peiyuan Ji ◽  
Yi Xi ◽  
Chengshuang Zhang ◽  
Chuanshen Wang ◽  
Chenguo Hu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Diffusion Path ◽  
Electrochemical Performances ◽  
Wet Chemistry ◽  
First Time ◽  
Charge Discharge

Porous materials have superior electrochemical performance owing to its their structure, which could increase the specific and contact area with the electrode. The spinel Li4Mn5O12 has a three-dimensional tunnel structure for a better diffusion path, which has the advantage of lithium ion insertion and extraction in the framework. However, multi-space spherical materials with single morphologies are rarely studied. In this work, waxberry-like and raspberry-like nanospheres for Li4Mn5O12 have been fabricated by the wet chemistry and solid-state methods for the first time. The diameter of a single waxberry- and raspberry-like nanosphere is about 1 μm and 600 nm, respectively. The specific capacitance of Li4Mn5O12 was 535 mF cm−2 and 147.25 F g−1 at the scan rate of 2 mV s−1, and the energy density was 110.7 Wh kg−1, remaining at 70% after 5000th charge-discharge cycles. Compared with raspberry-like nanosphere Li4Mn5O12, the waxberry-like nanoporous spinel Li4Mn5O12 shows the better electrochemical performance and stability; furthermore, these electrochemical performances have been improved greatly compared to the previous studies. All these results indicate that the waxberry-like nanoporous spinel Li4Mn5O12 could provide a potential application in high performance supercapacitors.

Potassium phosphotungstate spheres as an anode material for a solar rechargeable battery

2018 ◽  
Vol 2 (2) ◽  
pp. 353-356 ◽  
Author(s):  
NanFu Yan ◽  
WenHua Zhang ◽  
HongMin Cui ◽  
XueJiao Feng ◽  
YueWei Liu ◽  
...  
Keyword(s):  
Anode Material ◽  
Anode Materials ◽  
Coprecipitation Method ◽  
Rechargeable Battery ◽  
Potassium Phosphotungstate ◽  
First Time

Potassium phosphotungstate spheres, prepared by a simple coprecipitation method, are introduced for the first time as anode materials for a solar rechargeable battery.

A low temperature iron molten air battery

2014 ◽  
Vol 2 (27) ◽  
pp. 10577-10580 ◽  
Author(s):  
Baochen Cui ◽  
Stuart Licht
Keyword(s):  
Low Temperature ◽  
Rechargeable Battery ◽  
Storage Density ◽  
New Class ◽  
Air Battery

Molten air battery, a new class of rechargeable battery with the highest storage density, is demonstrated to work at temperatures more compatible with EV applications.

ZnO quantum dot-decorated carbon nanofibers derived from electrospun ZIF-8/PVA nanofibers for high-performance energy storage electrodes

2017 ◽  
Vol 53 (83) ◽  
pp. 11441-11444 ◽  
Author(s):  
Gyeongseop Lee ◽  
Young Deok Seo ◽  
Jyongsik Jang
Keyword(s):  
Energy Storage ◽  
Quantum Dot ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Hybrid Structures ◽  
Electrochemical Performances ◽  
First Time ◽  
Zno Qds

We for the first time prepared hybrid structures of ZnO QDs@carbons and carbon nanofibers using electrospun MOF materials and evaluated their electrochemical performances.

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