High-energy, flexible micro-supercapacitors by one-step laser fabrication of a self-generated nanoporous metal/oxide electrode

2017 ◽  
Vol 5 (47) ◽  
pp. 24585-24593 ◽  
Author(s):  
Jaehak Lee ◽  
Jae Young Seok ◽  
Seokwoo Son ◽  
Minyang Yang ◽  
Bongchul Kang
Keyword(s):  
Metal Oxide ◽  
High Performance ◽  
High Energy ◽  
Oxide Electrode ◽  
Laser Fabrication ◽  
Nanoporous Metal ◽  
One Step ◽  
Facile Fabrication

One-step, laser-induced self-generation of nanoporous hybrid electrodes enables facile fabrication of high-performance and flexible micro-supercapacitors.

Nanoporous metal/metal-oxide composite prepared by one-step de-alloying AlNiCoYCu metallic glasses

2017 ◽  
Vol 703 ◽  
pp. 461-465 ◽  
Author(s):  
Hao Yang ◽  
Huajun Qiu ◽  
Jun-Qiang Wang ◽  
Juntao Huo ◽  
Xinmin Wang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Metallic Glasses ◽  
Oxide Composite ◽  
Nanoporous Metal ◽  
Metal Metal ◽  
One Step

One-step electrodeposited MoS2@Ni-mesh electrode for flexible and transparent asymmetric solid-state supercapacitors

2020 ◽  
Vol 8 (45) ◽  
pp. 24040-24052
Author(s):  
Bobby Singh Soram ◽  
Jiu Yi Dai ◽  
Ibomcha Singh Thangjam ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
One Step

One-step electrodeposited MoS2@Ni-mesh as a high-performance negative electrode; a high energy density flexible and transparent asymmetric solid-state supercapacitor is fabricated.

Photoelectrochemical study of Zn cytochrome-c immobilised on a nanoporous metal oxide electrode

2002 ◽  
pp. 1518-1519 ◽  
Author(s):  
Emmanuel Topoglidis ◽  
Colin J. Campbell ◽  
Emilio Palomares ◽  
James R. Durrant
Keyword(s):  
Cytochrome C ◽  
Metal Oxide ◽  
Oxide Electrode ◽  
Nanoporous Metal

scholarly journals A Study on the Application Characteristics of the Insoluble MMO (Mixed Metal Oxide) Electrode for Energy Reduction of Zinc Electrowinning Process

2020 ◽  
Vol 42 (9) ◽  
pp. 424-430
Author(s):  
Mijung Park ◽  
Taeksoon Lee
Keyword(s):  
Energy Consumption ◽  
Metal Oxide ◽  
Energy Use ◽  
Deposition Efficiency ◽  
High Energy ◽  
Alloy Electrode ◽  
Mixed Metal Oxide ◽  
Zinc Electrowinning ◽  
Oxide Electrode ◽  
Zinc Deposition

Objective : The zinc electrowinning industry is one of the high energy consumption industries where energy saving is required. In the zinc electrowining process, electrode is a high energy consuming part. In order to reduce energy use in the electrolytic smelting industry, a comparative study was conducted on the current usage of Pb+Ag alloy electrode and insoluble composite metal oxide (MMO) electrode.Methods : In this study, a comparative evaluation of energy consumption was conducted between the generally used Pb+Ag alloy electrode and an insoluble MMO electrode. Aluminum was used as a reducing electrode. The actual on-site zinc electrowinning solution and ZnSO₄ simulated solution were prepared to estimate the electrode potential, voltage, zinc deposition efficiency, and lifetime characteristics under the current density of 500 A/m².Results and Discussion : The overvoltage of the insoluble MMO electrode was 28.9% lower and the voltage was 15.0% lower than that of Pb+Ag alloy electrode. The zinc deposition efficiency of the insoluble MMO electrode was higher 1.9% in the actual on-site zinc electrowinning solution and 6.3% in the simulated solution. Compared with the Pb+Ag alloy electrode in use, the insoluble composite metal oxide electrode exhibited low overvoltage, good voltage characteristics, and high current efficiency characteristics.Conclusions : When the energy consumption of the Pb+Ag alloy and the insoluble MMO electrodes was compared, The insoluble MMO electrode showed 17.0% lower energy consumption in the actual on-site zinc electrowinning solution and 23.8% lower in the ZnSO₄ simulated solution than Pb+Ag alloy electrode.

An in-situ catalytic-insoluble strategy enabled by sulfurized polyacrylonitrile-based composite cathode for potassium–sulfur batteries

2021 ◽  
pp. 2143003
Author(s):  
Xiaomin Yuan ◽  
Bo Zhu ◽  
Jinkui Feng ◽  
Chengguo Wang ◽  
Xun Cai ◽  
...  
Keyword(s):  
High Performance ◽  
Metal Oxide Nanoparticles ◽  
Specific Capacity ◽  
Reversible Capacity ◽  
Composite Cathode ◽  
High Energy ◽  
Host Materials ◽  
Catalytic Kinetics ◽  
One Step

Owing to the insoluble organosulfur mechanism and stable cycling life, sulfurized polyacrylonitrile (SPAN) developed as a promising cathode material for high-energy potassium–sulfur batteries (KSBs). However, it is yet a major challenge to achieve fast catalytic kinetics and high reversible capacity in SPAN-based cathodes. Here, one-step electrospun SPAN nanofibers embedded with Fe[Formula: see text]Nb[Formula: see text]O metal oxide nanoparticles (FeNb@SPAN) have been successfully developed to construct sulfur electrodes with high electrochemical activity, high sulfur utilization, and high cycling stability. The as-prepared freestanding FeNb@SPAN composite cathode, which featuring interwoven nanofibers with Fe[Formula: see text]Nb[Formula: see text]O nanoparticles homogeneously implanted, possesses high storage space for volume expansion and suppresses polysulfide dissolution during potassiation/depotassiation. Benefiting from its unique structure and composition in electrode design, the FeNb@SPAN cathode is endowed with outstanding energy storage performances with a high initial specific capacity of 776 mAh [Formula: see text] g[Formula: see text] under 50 mA [Formula: see text] g[Formula: see text] and an excellent cycling capability of 201 mAh [Formula: see text] g[Formula: see text] after 80 charge/discharge processes. This work heralds a feasible strategy toward SPAN-based sulfur host materials in the structural design of next-generation high-performance cathode materials for KSBs and other metal–sulfur batteries.

scholarly journals Hydrothermal synthesis of cobalt telluride nanorods for a high performance hybrid asymmetric supercapacitor

RSC Advances ◽  
2020 ◽  
Vol 10 (23) ◽  
pp. 13632-13641 ◽  
Author(s):  
M. Manikandan ◽  
K. Subramani ◽  
M. Sathish ◽  
S. Dhanuskodi
Keyword(s):  
Activated Carbon ◽  
Hydrothermal Synthesis ◽  
Power Density ◽  
High Performance ◽  
High Energy ◽  
Electrochemical Stability ◽  
Asymmetric Supercapacitor ◽  
One Step ◽  
Carbon Based

A one-step hydrothermal derived cobalt telluride nanorods and activated carbon-based hybrid asymmetric supercapacitor delivered a high energy (40.7 W h kg−1) and power density (22.5 kW kg−1) with an electrochemical stability of 85% for 10000 cycles.

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