Energy & Green Tech
A team of researchers led by chemists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory has learned that an electrolyte additive allows stable high-voltage cycling of nickel-rich layered cathodes. Their ...
Jun 1, 2022
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1170
Energy & Green Tech
Imagine a psychic telling your parents, on the day you were born, how long you would live. A similar experience is possible for battery chemists who are using new computational models to calculate battery lifetimes based ...
May 6, 2022
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343
Energy & Green Tech
Scientists have created a battery designed for the electric grid that locks in energy for months without losing much storage capacity.
Apr 4, 2022
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176
Engineering
Solid electrolytes may overcome key technological hurdles associated with the narrow electrochemical and thermal stability of conventional lithium (Li)-ion and sodium (Na)-ion batteries.
Jan 24, 2022
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63
Engineering
In his most recent published research, appearing in Applied Thermal Engineering, City, University of London's Dr. Martin White explores a novel organic Rankine cycle system, based on a two-phase expansion through numerical ...
May 24, 2021
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22
Energy & Green Tech
Scientists have identified the primary cause of failure in a state-of-the-art lithium-metal battery, of interest for long-range electric vehicles. Using high-energy X-rays, they followed the cycling-induced changes at thousands ...
Apr 19, 2021
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24
Energy & Green Tech
Sodium-ion batteries are a potential replacement for lithium batteries, but the anodes—positively charged electrodes—that work well for lithium-ion batteries don't provide the same level of performance for sodium-ion ...
Jan 12, 2021
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93
Energy & Green Tech
Humankind has entered uncharted territory: atmospheric CO2 levels have soared to a record-breaking 415 ppm for the first time in human history. The need to find a sustainable alternative to CO2-producing fuels is urgent. ...
Jun 10, 2019
0
1922
Engineering
Typically, when architects or engineers design a new building, it's only at the end of the process—if ever—that a life cycle analysis of the building's environmental impact is carried out. And by then, it may be too late ...
Sep 5, 2018
0
28
Energy & Green Tech
A case study of the Barnett Shale region in Texas, where hydraulic fracturing was first implemented, for the first time provides quantifiable information on the life cycle land use of generating electricity from natural gas ...
Oct 3, 2017
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14
Cycling, also called bicycling or biking, is the use of bicycles for transport, recreation, or for sport. Persons engaged in cycling are cyclists or bicyclists. Apart from ordinary two-wheeled bicycles, cycling also includes riding unicycles, tricycles, quadracycles, and other similar human-powered vehicles (HPVs).
Bicycles were introduced in the 19th century and now number about one billion worldwide. They are the principal means of transportation in many regions.
Cycling is a very efficient and effective mode of transportation optimal for short to moderate distances. Bicycles provide numerous benefits compared to motor vehicles, including exercise, an alternative to the use of fossil fuels, no air or noise pollution, much reduced traffic congestion, easier parking, greater maneuverability, and access to both roads and paths. The advantages are at less financial cost to the user as well as society (negligible damage to roads, and less pavement required). Criticisms and disadvantages of cycling include reduced protection in crashes, particularly with motor vehicles, longer travel time (except in densely populated areas), vulnerability to weather conditions, difficulty in transporting passengers, and the skill and fitness required.
This text uses material from Wikipedia, licensed under CC BY-SA
