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Showing 1 to 14 of 14 for “"Lithium-air"”.
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Investigation of oxidation in nonaqueous lithium-air batteries
… renewable energy sources such as solar and wind. Lithium-air batteries are a promising avenue for advancing the energy storage capabilities beyond that of current lithium-ion technology. These batteries face a number of challenges which prevent their practical implementation in devices. This …
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Multifunctioning Electrocatalytic Cathodes for Lithium-Air and Lithium-Oxygen Batteries
… On the contrary, Li- O2 batteries (LOBs) and Li-air batteries (LABs) with larger theoretical energy density are capable of powering heavy-duty transportation, given they overcome the sluggish oxygen kinetics. One of the possible ways to achieve this goal is by introducing novel bifunctional …
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Understanding the Limits of Lithium-Air Batteries – NMR and Thermodynamic Studies
Lithium-air batteries promise to deliver exceptionally high energy density while only using common materials, such as carbon, in their cathode structure. To do this, they oxidise a metallic lithium anode to release Li+ ions, which combine with O<sub>2</sub><sup>2-</sup> ions, produced from the …
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Electrochemical studies of lithium-oxygen reactions for lithium-air battery applications
… cell operation is critical for implementing Li-air batteries with high reversibility and long cycle life. In this thesis, the rotating ring disk electrode (RRDE) technique has been used to probe the influence of different electrolyte solvents on the stability of the superoxide radical produced …
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Probing of reaction mechanisms, and development of polymeric materials for lithium-air batteries
… the need for better energy storage media. Lithium-air (O₂) batteries are of great interest because they have high theoretical energy densities. However, conventional Li-O₂ batteries face challenges such as the use of volatile and flammable liquid electrolytes, side reactions between the …
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Investigation of lithium-air battery discharge product formed on carbon nanotube and nanofiber electrodes
… including those related to energy storage. Li-air (Li-O₂) batteries have received much interest recently because of their very high theoretical energy densities (3200 Wh/kgLi2O₂), which make them ideal candidates for energy storage devices for future fully-electric vehicles. During operation of …
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Hybrid nanostructure designs facilitated by M13 virus for lithium ion battery and lithium air battery electrodes
The development of technology and population growth will demand 56 percent increase of the energy consumption in 30 years. An efficient energy storage system will be necessary to meet these increased needs to deliver and store the energy. After the first release of commercial Li ion batteries in …
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Synthesis and electrochemical studies of novel ionic liquid based electrolytes
… interest as nonaqueous electrolytes in lithium ion- and metal-air batteries in recent years due to their low volatility, non-flammability, wide liquid range, and thermal stability characteristics. Towards developing a new generation of high specific energy lithium ion batteries, a series …
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Design and manufacturing of a microcalorimeter for measuring heat flows in electrochemical reactions to milli-Kelvin precision
Due to their high energy density, lithium-air batteries have tremendous potential for application to batteries for electric vehicles. While significant efforts have been made in understanding the material origins of electrochemical performance under discharging and charging conditions, there is …
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Generation and observation of reactive intermediates in the gas phase and condensed media
… on oxidative processes which may be occurring in lithium-air cells. Exposure of solid Li₂O₂ to gaseous p-benzoquinone results in the formation of a blue coating on Li₂O₂. This coating was identified as the quinone radical anion Li[p-C₆H₄O₂], which forms via lithium and electron transfer from …
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Gas diffusion electrodes and operating conditions for electrochemical energy storage applications
… into useful feedstock chemicals or fuels, and lithium air battery. Electrochemical reduction of CO2 into value-added chemicals is expected to play an important role in reducing CO2 emissions and dependence on fossil fuels as well as in utilizing excess, otherwise wasted energy from intermittent …
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Li₂0₂ in Li-0₂ batteries : catalytic enhancement of electrochemical oxidation and thermophysical transformations
… energy capacity of current state of the art lithium-ion battery packs, factors which limit range below 300 miles. Lithium-air (Li-air or Li-0 2) batteries could deliver more than three times the gravimetric energy of Li-ion batteries at potentially reduced cost by replacing transition metal …
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Characterizing mass transport and crossover reactions in Li-air batteries
Lithium air batteries (LABs) promise extremely high gravimetric energy densities. Similar to fuel cells, mass transport of redox active species, such as dissolved oxygen gas or redox mediators, is one of the challenges faced by LABs. While increasing mass transport increases LAB cell performance, …
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Synthesis And In-Situ Charactorization Of Energy Storage Material
… storage devices, such as Li-ion batteries, Li-air batteries and supercapacitors, due to its high conductivity, high surface area, mechanical and electrochemical stability. However, the fact that graphene (and other carbon based materials) can only store charges on exposed surface, which …