Early populations shifted from quasi-egalitarian hunter-gatherer societies to communities governed by a centralized authority in the middle to late Holocene, but how the transition occurred still puzzles anthropologists. ...
Archaeology
Nov 30, 2020
3
466
Lithium ion batteries aren't keeping up with energy demands from higher power electronic devices, electric vehicles and smart electric grids. To develop higher capacity batteries, researchers have looked to lithium sulfur ...
Materials Science
Sep 30, 2019
0
37
Russian researchers from the Moscow Institute of Physics and Technology (MIPT), the Technological Institute for Superhard and Novel Carbon Materials (TISNCM), and the National University of Science and Technology MISIS have ...
Energy & Green Tech
Jun 1, 2018
12
169
A new design of algae-powered fuel cells that is five times more efficient than existing plant and algal models, as well as being potentially more cost-effective to produce and practical to use, has been developed by researchers ...
Energy & Green Tech
Jan 10, 2018
1
119
Under anaerobic conditions, certain bacteria can produce electricity. This behavior can be exploited in microbial fuel cells, with a special focus on wastewater treatment schemes. A weak point is the dissatisfactory power ...
Materials Science
Jun 27, 2017
0
4
Wearable power sources for wearable electronics are limited by the size of garments.
Nanomaterials
Dec 16, 2015
2
21
As a novel energy storage device, supercapacitors have attracted substantial attention in recent years due to their ultra-high charge and discharge rate, excellent stability, long cycle life and very high power density. Imagine ...
Nanophysics
Mar 10, 2015
1
92
An efficient method to harvest low-grade waste heat as electricity may be possible using reversible ammonia batteries, according to Penn State engineers.
Energy & Green Tech
Dec 3, 2014
0
0
Using 3-D printing and novel semiconductors, researchers at the Department of Energy's Oak Ridge National Laboratory have created a power inverter that could make electric vehicles lighter, more powerful and more efficient.
Energy & Green Tech
Oct 14, 2014
2
0
Battery replacement may soon be a thing of the past. Researchers from A*STAR's Institute of Microelectronics (IME) are tapping into low frequency vibrations, the most abundant and ubiquitous energy source in the surroundings, ...
Engineering
Feb 6, 2014
1
0
