A RuO2 nanoparticle-decorated buckypaper cathode for non-aqueous lithium–oxygen batteries

2015 ◽  
Vol 3 (37) ◽  
pp. 19042-19049 ◽  
Author(s):  
P. Tan ◽  
W. Shyy ◽  
T. S. Zhao ◽  
X. B. Zhu ◽  
Z. H. Wei
Keyword(s):  
Energy Efficiency ◽  
Specific Capacity ◽  
High Energy ◽  
Current Collectors ◽  
Polymeric Binders ◽  
High Energy Efficiency ◽  
Lithium Oxygen Batteries ◽  
Additional Current

A RuO2 nanoparticle-decorated buckypaper cathode does not require additional current collectors and polymeric binders, offering promise for a high-practical specific capacity, high-energy efficiency, and stable electrode for non-aqueous lithium–oxygen batteries.

scholarly journals A Novel Cr2O3/MnO2-x Electrode for Lithium-Oxygen Batteries with Low Charge Voltage and High Energy Efficiency

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhaohuan Wei ◽  
Zhiyuan Zhang ◽  
Yaqi Ren ◽  
Hong Zhao
Keyword(s):  
Energy Efficiency ◽  
Specific Capacity ◽  
Rate Capability ◽  
High Energy ◽  
Charge Voltage ◽  
Calcination Process ◽  
Anodic Electrodeposition ◽  
High Energy Efficiency ◽  
Lithium Oxygen Batteries ◽  
Low Charge

A high energy efficiency, low charging voltage cathode is of great significance for the development of non-aqueous lithium-oxygen batteries. Non-stoichiometric manganese dioxide (MnO2-x) and chromium trioxide (Cr2O3) are known to have good catalytic activities for the discharging and charging processes, respectively. In this work, we prepared a cathode based on Cr2O3 decorated MnO2-x nanosheets via a simple anodic electrodeposition-electrostatic adsorption-calcination process. This combined fabrication process allowed the simultaneous introduction of abundant oxygen vacancies and trivalent manganese into the MnO2-x nanosheets, with a uniform load of a small amount of Cr2O3 on the surface of the MnO2-x nanosheets. Therefore, the Cr2O3/MnO2-x electrode exhibited a high catalytic effect for both discharging and charging, while providing high energy efficiency and low charge voltage. Experimental results show that the as-prepared Cr2O3/MnO2-x cathode could provide a specific capacity of 6,779 mA·h·g−1 with a terminal charge voltage of 3.84 V, and energy efficiency of 78%, at a current density of 200 mA·g−1. The Cr2O3/MnO2-x electrode also showed good rate capability and cycle stability. All the results suggest that the as-prepared Cr2O3/MnO2-x nanosheet electrode has great prospects in non-aqueous lithium-oxygen batteries.

Solar-enhanced hybrid lithium–oxygen batteries with a low voltage and superior long-life stability

2020 ◽  
Vol 56 (88) ◽  
pp. 13642-13645
Author(s):  
Hao Gong ◽  
Hairong Xue ◽  
Bin Gao ◽  
Yang Li ◽  
Xingyu Yu ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Low Voltage ◽  
High Energy ◽  
Charge Voltage ◽  
Long Term Stability ◽  
Long Life ◽  
High Energy Efficiency ◽  
Lithium Oxygen Batteries ◽  
Low Charge

Coating α-Fe2O3 with NiOOH results in enhanced electrochemical properties, and the as-assembled hybrid lithium–oxygen batteries deliver a low charge voltage of 3.03 V, high energy efficiency of 88%, and long-term stability for over 350 hours.

scholarly journals Graphene-based quasi-solid-state lithium–oxygen batteries with high energy efficiency and a long cycling lifetime

2018 ◽  
Vol 10 (11) ◽  
pp. 1037-1045 ◽  
Author(s):  
Gang Huang ◽  
Jiuhui Han ◽  
Chuchu Yang ◽  
Ziqian Wang ◽  
Takeshi Fujita ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Solid State ◽  
High Energy ◽  
High Energy Efficiency ◽  
Lithium Oxygen Batteries

A Mo2C/Carbon Nanotube Composite Cathode for Lithium–Oxygen Batteries with High Energy Efficiency and Long Cycle Life

ACS Nano ◽  
2015 ◽  
Vol 9 (4) ◽  
pp. 4129-4137 ◽  
Author(s):  
Won-Jin Kwak ◽  
Kah Chun Lau ◽  
Chang-Dae Shin ◽  
Khalil Amine ◽  
Larry A Curtiss ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Carbon Nanotube ◽  
Composite Cathode ◽  
High Energy ◽  
Cycle Life ◽  
Long Cycle ◽  
Long Cycle Life ◽  
High Energy Efficiency ◽  
Carbon Nanotube Composite ◽  
Lithium Oxygen Batteries

Reactions in Activated Peroxide Systems and their Influences on Bleaching Performance

2020 ◽  
Vol 17 ◽  
Author(s):  
Xiaoyan Wang ◽  
Jinmei Du ◽  
Changhai Xu
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Energy Efficiency ◽  
Textile Industry ◽  
High Energy ◽  
Side Reactions ◽  
Competitive Reactions ◽  
High Energy Efficiency ◽  
Hydrolysis Of ◽  
Bleach Activators

Abstract:: Activated peroxide systems are formed by adding so-called bleach activators to aqueous solution of hydrogen peroxide, developed in the seventies of the last century for use in domestic laundry for their high energy efficiency and introduced at the beginning of the 21st century to the textile industry as an approach toward overcoming the extensive energy consumption in bleaching. In activated peroxide systems, bleach activators undergo perhydrolysis to generate more kinetically active peracids that enable bleaching under milder conditions while hydrolysis of bleach activators and decomposition of peracids may occur as side reactions to weaken the bleaching efficiency. This mini-review aims to summarize these competitive reactions in activated peroxide systems and their influence on bleaching performance.

scholarly journals High energy efficiency ventilation to limit COVID-19 contagion in school environments

2021 ◽  
pp. 110882
Author(s):  
Luigi Schibuola ◽  
Chiara Tambani
Keyword(s):  
Energy Efficiency ◽  
High Energy ◽  
School Environments ◽  
High Energy Efficiency

High Energy Efficiency and Stability for Photoassisted Aqueous Lithium–Iodine Redox Batteries

2016 ◽  
Vol 1 (4) ◽  
pp. 806-813 ◽  
Author(s):  
Georgios Nikiforidis ◽  
Keisuke Tajima ◽  
Hye Ryung Byon
Keyword(s):  
Energy Efficiency ◽  
High Energy ◽  
High Energy Efficiency

High Energy Efficiency With Maximum Flexibility

2021 ◽  
Vol 14 (3) ◽  
pp. 12-15
Author(s):  
Keyword(s):  
Energy Efficiency ◽  
High Energy ◽  
High Energy Efficiency

Adaptive Hybrid Precoding With High Energy Efficiency for Millimeter Wave Communication Systems

2021 ◽  
pp. 1-12
Author(s):  
Fulai Liu ◽  
Xiaoyu Bai ◽  
Ruiyan Du ◽  
Huiyang Shi ◽  
Huajing Liu
Keyword(s):  
Energy Efficiency ◽  
Millimeter Wave ◽  
Communication Systems ◽  
High Energy ◽  
Hybrid Precoding ◽  
High Energy Efficiency ◽  
Millimeter Wave Communication

Electrochemical lithium recovery with lithium iron phosphate: What causes performance degradation and how can we improve the stability?

2021 ◽  
Author(s):  
Lei Wang ◽  
Kathleen C Frisella ◽  
Pattarachai Srimuk ◽  
Oliver Janka ◽  
Guido Kickelbick ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Manganese Oxide ◽  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
High Energy ◽  
Performance Degradation ◽  
Electrochemical Processes ◽  
High Energy Efficiency ◽  
The Stability

Electrochemical processes enable fast lithium extraction, for example, from brines, with high energy efficiency and stability. Lithium iron phosphate (LiFePO4) and manganese oxide (λ-MnO2) have usually been employed as the...

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