scholarly journals FeCo Nanoparticle-Loaded Nutshell-Derived Porous Carbon as Sustainable Catalyst in Al-Air Batteries

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
A. Sumboja ◽  
B. Prakoso ◽  
Y. Ma ◽  
F. R. Irwan ◽  
J. J. Hutani ◽  
...  
Keyword(s):  
Surface Area ◽  
High Performance ◽  
Nitrogen Doping ◽  
Low Cost ◽  
High Energy ◽  
Large Surface Area ◽  
High Energy Density ◽  
Active Surface Area ◽  
Peanut Shell ◽  
Feco Alloy

Developing a high-performance ORR (oxygen reduction reaction) catalyst at low cost has been a challenge for the commercialization of high-energy density and low production cost aluminium-air batteries. Herein, we report a catalyst, prepared by pyrolyzing the shell waste of peanut or pistachio, followed by concurrent nitrogen-doping and FeCo alloy nanoparticle loading. Large surface area (1246.4 m2 g-1) of pistachio shell-derived carbon can be obtained by combining physical and chemical treatments of the biomass. Such a large surface area carbon eases nitrogen doping and provides more nucleation sites for FeCo alloy growth, furnishing the resultant catalyst (FeCo/N-C-Pistachio) with higher content of N, Fe, and Co with a larger electrochemically active surface area as compared to its peanut shell counterpart (FeCo/N-C-Peanut). The FeCo/N-C-Pistachio displays a promising onset potential of 0.93 V vs. RHE and a high saturating current density of 4.49 mA cm-2, suggesting its high ORR activity. An aluminium-air battery, with FeCo/N-C-Pistachio catalyst on the cathode and coupled with a commercial aluminium 1100 anode, delivers a power density of 99.7 mW cm-2 and a stable discharge voltage at 1.37 V over 5 h of operation. This high-performance, low-cost, and environmentally sustainable electrocatalyst shows potential for large-scale adoption of aluminium-air batteries.

A High-Performance Free-Standing Zn Anode for Flexible Zinc-Ion Batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Chenxi Gao ◽  
Jiawei Wang ◽  
Yuan Huang ◽  
Zixuan Li ◽  
Jiyan Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Free Standing ◽  
Energy Device ◽  
Zn Anode ◽  
Significant Attention

Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and...

scholarly journals CNT-Ni-Co-O based composite for Supercapacitor applications by Cyclic Voltametry analysis: A Short Quick Glimpse

2020 ◽  
Vol 17 (Issue 1) ◽  
pp. 16-24
Author(s):  
Soumya Mukherjee
Keyword(s):  
Surface Area ◽  
Hybrid Material ◽  
High Performance ◽  
Mass Density ◽  
Chemical Properties ◽  
Leading Edge ◽  
High Energy ◽  
Modern Technology ◽  
High Energy Density ◽  
Energy Applications

CNT based material are of vital importance in modern technology for their superior physical and chemical properties. In recent times, materials development for energy applications is focused for improvement of battery, capacitors, and electrodes for enhanced efficiency. High performance Supercapacitors with high energy densities are at the leading edge for renewable energy engineering device sector. CNT based Ni-Co-O material is of keen interest due to its possible applications as supercapacitors, electrocatalyst for metal/air battery and others. The hybrid material synthesis, morphological and electrochemical features are vital to evaluate the material performances for energy applications. Electrical studies are also important to evaluate the properties required for device applications. CNT is used as electrode material for electrochemical storage due to superior chemical stability, low mass density, low resistivity and large surface area. CNT replaces activated carbon material as supercapacitor due to improper balance between enhanced surface area and mesoporosity thus limiting electrolytic accessibility and capacitance. In the present article a brief review is stressed forward for the development of CNT-Ni-Co-O based hybrid material for supercapacitor high energy density applications.

High-performance nickel cobalt sulfide materials via low-cost preparation for advanced asymmetric supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 42633-42642 ◽  
Author(s):  
Shaolan Wang ◽  
Wei Li ◽  
Lipeng Xin ◽  
Ming Wu ◽  
Xiaojie Lou
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Cobalt Sulfide ◽  
Asymmetric Supercapacitors ◽  
Nickel Cobalt ◽  
Good Cycling Stability ◽  
Asymmetric Device

First report the nickel cobalt sulfides electrode materials through a facile, convenient and low cost coprecipitation method. The as-fabricated asymmetric device exhibits high energy density (44.44 W h kg−1 at 954.14 W kg−1) and good cycling stability.

High-performance flexible quasi-solid-state Zn–MnO2 battery based on MnO2 nanorod arrays coated 3D porous nitrogen-doped carbon cloth

2017 ◽  
Vol 5 (28) ◽  
pp. 14838-14846 ◽  
Author(s):  
Wenda Qiu ◽  
Yu Li ◽  
Ao You ◽  
Zemin Zhang ◽  
Guangfu Li ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Cloth ◽  
Nanorod Arrays ◽  
Energy Storage Devices ◽  
Environmental Friendliness ◽  
Storage Devices ◽  
Nitrogen Doped Carbon

Aqueous Zn–MnO2 batteries have great potential as flexible energy storage devices owing to their low cost, high energy density, safety, and environmental friendliness.

Dry Process for Fabricating Low Cost and High Performance Electrode for Energy Storage Devices

MRS Advances ◽  
2019 ◽  
Vol 4 (15) ◽  
pp. 857-863 ◽  
Author(s):  
Qiang Wu ◽  
Jim P. Zheng ◽  
Mary Hendrickson ◽  
Edward J. Plichta
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Dry Process ◽  
Roll To Roll ◽  
Dry Electrode ◽  
Tap Density

AbstractWe report a roll-to-roll dry processing for making low cost and high performance electrodes for lithium-ion batteries (LIBs). Currently, the electrodes for LIBs are made with a slurry casting procedure (wet method). The dry electrode fabrication is a three-step process including: step 1 of uniformly mixing electrode materials powders comprising an active material, a carbonaceous conductor and the soft polymer binder; step 2 of forming a free-standing, continuous electrode film by pressing the mixed powders together through the gap between two rolls of a roll-mill; and step 3 of roll-to-roll laminating the electrode film onto a substrate such as a current collector. Compared with the conventional wet slurry electrode manufacturing method, the dry manufactural procedure and infrastructure are simpler, the production cost is lower, and the process eliminates volatile organic compound emission and is more environmentally friendly, and the ability of making thick (>120µm) electrodes with high tap density results in high energy density of final energy storage device. A prototype LIBs of LiNi0.6Mn0.2Co0.2O2 (NMC622)/graphite also has 230 Wh/ kg energy density.

Enabling high-performance room-temperature sodium/sulfur batteries with few-layer 2H-MoSe2 embellished nitrogen-doped hollow carbon spheres as polysulfide barrier

2021 ◽  
Author(s):  
Chunwei Dong ◽  
HongYu Zhou ◽  
Bo Jin ◽  
Wang Gao ◽  
Xingyou Lang ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Electrode Materials ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Widespread Application ◽  
Earth Abundant ◽  
Hollow Carbon ◽  
Sodium Sulfur

Room-temperature sodium/sulfur (RT-Na/S) batteries are of considerable interest for next-generation energy storage systems because of the earth-abundant electrode materials, low cost, and high energy density. However, the widespread application of...

scholarly journals Porous g-C3N4 covered MOF-derived nanocarbon materials for high-performance supercapacitors

RSC Advances ◽  
2019 ◽  
Vol 9 (67) ◽  
pp. 39076-39081 ◽  
Author(s):  
Chao Lu ◽  
Xi Chen
Keyword(s):  
Surface Area ◽  
High Performance ◽  
Nitrogen Doping ◽  
Large Surface Area ◽  
High Nitrogen ◽  
Nanocarbon Material ◽  
Nanocarbon Materials

Here, we report a porous g-C3N4 covered MOF-derived nanocarbon material with large surface area and high nitrogen doping for supercapacitors.

scholarly journals Hexacyanometallate aqueous flow battery

2021 ◽  
Author(s):  
Ji-Eun Jang ◽  
Ryeong-ah Kim ◽  
Chanhee Lee ◽  
Sujin Kang ◽  
Jaechan Ryu ◽  
...  
Keyword(s):  
High Performance ◽  
Density Functional ◽  
Strong Field ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Jahn Teller ◽  
Aqueous Flow ◽  
Rapid Kinetics ◽  
The Cost

Abstract Aqueous redox flow batteries (RFBs) have attracted significant attention as energy storage systems by virtue of their inexpensive nature and long-lasting features. Although all-vanadium RFBs exhibit long lifetimes, the cost of vanadium resources fluctuates considerably, and is generally expensive. Iron–chromium RFBs take advantage of utilizing a low-cost and large abundance of iron and chromite ore; however, the redox chemistry of CrII/III generally involves strong Jahn–Teller effects. Herein, we introduce a new Cr-based negolyte coordinated with strong-field ligands capable of mitigating strong Jahn–Teller effects, thereby facilitating low redox potential, high stability, and rapid kinetics. Density functional theory (DFT) calculations reveal that the complex of [Cr(CN)6]4− prefers low-spin states, facilitating a stable and fast redox reaction. The prototype full-cell configuration features a high-energy density of 11.4 Wh L− 1 and a stable lifetime of 250 cycles. Consequently, our proposed system opens new avenues for the development of high-performance RFBs.

Preparation of graphene adsorbents and their applications in water purification

2013 ◽  
Vol 33 (2-3) ◽  
pp. 139-160 ◽  
Author(s):  
Jing Xu ◽  
Hongda Lv ◽  
Sheng-Tao Yang ◽  
Jianbin Luo
Keyword(s):  
Heavy Metals ◽  
Surface Area ◽  
Functional Groups ◽  
Water Purification ◽  
High Performance ◽  
Low Cost ◽  
Large Surface Area ◽  
Cost Of Treatment ◽  
Preparation Methods ◽  
Adsorption Behaviors

AbstractGraphene has attracted great interest for its unique structure, fantastic properties, and wide applications. Among the various applications, graphene-based materials hold great potential as adsorbents in decontaminating water because of the large surface area, diverse functionalities, ease of preparation, and low cost of treatment. Graphene and its composites have been used in treating heavy metals, dyes, pesticide, antibiotics, oils, and so on. In this paper, we reviewed the preparation methods of graphene adsorbents and their applications in water purification. The adsorption behaviors of contaminates on graphene are summarized. The interactions between graphene and contaminates are discussed, emphasizing the influence of functional groups. We also propose some guidelines in designing high-performance graphene adsorbents from the physicochemical perspective.

scholarly journals High-Performance Aqueous Zinc–Manganese Battery with Reversible Mn2+/Mn4+ Double Redox Achieved by Carbon Coated MnOx Nanoparticles

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jingdong Huang ◽  
Jing Zeng ◽  
Kunjie Zhu ◽  
Ruizhi Zhang ◽  
Jun Liu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Performance ◽  
Low Cost ◽  
Electrical Energy ◽  
Electrode Reaction ◽  
High Energy ◽  
High Energy Density ◽  
Ultrahigh Energy ◽  
Energy Storage Devices

AbstractThere is an urgent need for low-cost, high-energy-density, environmentally friendly energy storage devices to fulfill the rapidly increasing need for electrical energy storage. Multi-electron redox is considerably crucial for the development of high-energy-density cathodes. Here we present high-performance aqueous zinc–manganese batteries with reversible Mn2+/Mn4+ double redox. The active Mn4+ is generated in situ from the Mn2+-containing MnOx nanoparticles and electrolyte. Benefitting from the low crystallinity of the birnessite-type MnO2 as well as the electrolyte with Mn2+ additive, the MnOx cathode achieves an ultrahigh energy density with a peak of 845.1 Wh kg−1 and an ultralong lifespan of 1500 cycles. The combination of electrochemical measurements and material characterization reveals the reversible Mn2+/Mn4+ double redox (birnessite-type MnO2 ↔ monoclinic MnOOH and spinel ZnMn2O4 ↔ Mn2+ ions). The reversible Mn2+/Mn4+ double redox electrode reaction mechanism offers new opportunities for the design of low-cost, high-energy-density cathodes for advanced rechargeable aqueous batteries.

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