TiO2 Nanosheet-Redox Graphene Oxide/Sulphur Cathode for High-Performance Lithium-Sulphur Batteries

2020 ◽  
Vol 20 (3) ◽  
pp. 1715-1722
Author(s):  
Shu Hong ◽  
Yunzhao Han ◽  
Kun Zhang ◽  
Mingbo Wang ◽  
Nana Cui ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
Active Sites ◽  
High Performance ◽  
Synergistic Effects ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Specific Discharge

Lithium-sulphur batteries are considered as some of the most potent secondary-battery systems. These batteries are expected to have extensive applications in fields requiring high-energy density. However, such applications are hindered by some serious intrinsic obstacles. Herein, TiO2 nanosheets-rGO/sulphur (TiO2 NS-rGO/S) composites were fabricated through a two-process hydrothermal method. TiO2 nanosheets served as active sites for polysulphide absorption, whereas rGO offered space for sulphur improvement and TiO2 NS-rGO/S composites. The TiO2 NS-rGO/S composite exhibited high discharge capacity of 1099 mAh·g-1 at 0.2 C rate and retained a capacity of 690 mAh·g-1 after 100 cycles, with high sulphur loading of 3 mg·cm-2. The high initial specific discharge capacity and improved cyclic stability were attributed to the synergistic effects of TiO2 nanosheets and rGO. These results indicated that the simple, low-cost and scalable method provides a novel perspective on practical utilisation of lithium-sulphur 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...

Co(OH)2/RGO/NiO sandwich-structured nanotube arrays with special surface and synergistic effects as high-performance positive electrodes for asymmetric supercapacitors

Nanoscale ◽  
2015 ◽  
Vol 7 (40) ◽  
pp. 16932-16942 ◽  
Author(s):  
Han Xu ◽  
Chi Zhang ◽  
Wen Zhou ◽  
Gao-Ren Li
Keyword(s):  
Electric Vehicles ◽  
High Performance ◽  
Hybrid Electric Vehicles ◽  
Synergistic Effects ◽  
High Energy ◽  
Consumer Electronics ◽  
High Energy Density ◽  
Asymmetric Supercapacitors ◽  
Positive Electrodes ◽  
Special Surface

High power density, high energy density and excellent cycling stability are the main requirements for high-performance supercapacitors (SCs) that will be widely used for portable consumer electronics and hybrid electric vehicles.

scholarly journals Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Goli Nagaraju ◽  
S. Chandra Sekhar ◽  
Bhimanaboina Ramulu ◽  
Sk. Khaja Hussain ◽  
D. Narsimulu ◽  
...  
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Nickel Foam ◽  
Rate Capability ◽  
Negative Electrode ◽  
High Energy ◽  
High Energy Density ◽  
Phase Method ◽  
Charge Storage ◽  
Energy Storage Devices

Abstract Designing rationally combined metal–organic frameworks (MOFs) with multifunctional nanogeometries is of significant research interest to enable the electrochemical properties in advanced energy storage devices. Herein, we explored a new class of binder-free dual-layered Ni–Co–Mn-based MOFs (NCM-based MOFs) with three-dimensional (3D)-on-2D nanoarchitectures through a polarity-induced solution-phase method for high-performance supercapatteries. The hierarchical NCM-based MOFs having grown on nickel foam exhibit a battery-type charge storage mechanism with superior areal capacity (1311.4 μAh cm−2 at 5 mA cm−2), good rate capability (61.8%; 811.67 μAh cm−2 at 50 mA cm−2), and an excellent cycling durability. The superior charge storage properties are ascribed to the synergistic features, higher accessible active sites of dual-layered nanogeometries, and exalted redox chemistry of multi metallic guest species, respectively. The bilayered NCM-based MOFs are further employed as a battery-type electrode for the fabrication of supercapattery paradigm with biomass-derived nitrogen/oxygen doped porous carbon as a negative electrode, which demonstrates excellent capacity of 1.6 mAh cm−2 along with high energy and power densities of 1.21 mWh cm−2 and 32.49 mW cm−2, respectively. Following, the MOF-based supercapattery was further assembled with a renewable solar power harvester to use as a self-charging station for various portable electronic applications.

A high performance SnO2/C nanocomposite cathode for aluminum-ion batteries

2019 ◽  
Vol 7 (12) ◽  
pp. 7213-7220 ◽  
Author(s):  
Hongyan Lu ◽  
Yuanxin Wan ◽  
Tianyi Wang ◽  
Rong Jin ◽  
Peitao Ding ◽  
...  
Keyword(s):  
Discharge Capacity ◽  
High Performance ◽  
Cycle Life ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Long Cycle ◽  
Aluminum Ion ◽  
Long Cycle Life

A novel SnO2/C AIB with high discharge capacity and long cycle life is achieved.

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.

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.

Carbon dioxide in the cage: manganese metal–organic frameworks for high performance CO2electrodes in Li–CO2batteries

2018 ◽  
Vol 11 (5) ◽  
pp. 1318-1325 ◽  
Author(s):  
Siwu Li ◽  
Yu Dong ◽  
Junwen Zhou ◽  
Yuan Liu ◽  
Jiaming Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Discharge Capacity ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Metal Organic

Manganese MOF-based cathodes achieve high discharge capacity, reduced overpotentials and promoted reversibility in Li–CO2batteries.

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.

Investigation of the exceptional charge performance of the 0.93Li4−xMn2O5–0.07Li2O composite cathode for Li-ion batteries

2018 ◽  
Vol 6 (12) ◽  
pp. 5156-5165 ◽  
Author(s):  
M. Freire ◽  
M. Diaz-Lopez ◽  
P. Bordet ◽  
C. V. Colin ◽  
O. I. Lebedev ◽  
...  
Keyword(s):  
Energy Density ◽  
Composite Cathode ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Manganese Oxide ◽  
Li Ion Batteries ◽  
Oxide Electrode ◽  
High Discharge ◽  
High Discharge Capacity ◽  
Li Ion

Herein, we report a detailed study on the high-energy density nanostructured Li4−xMn2O5–Li2O composite with a high discharge capacity of 355 mA h g−1, constituting the highest value reported to date for a lithium–manganese oxide electrode.

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