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 work could lead to improvements in the energy density of lithium batteries that power electric vehicles. The findings, published on […]
China aims to double its wind and solar capacity by 2025, according to a new road map that also allows for more coal-fired power plants to bolster energy security. The world’s biggest polluter earlier estimated it needs to double wind and solar use by 2030 to deliver on its pledges under the Paris climate accord. […]
Solar energy is a popular candidate for a sustainable alternative to fossil fuels. A solar cell, or photovoltaic (PV) cell, converts sunlight directly into electricity. However, the conversion efficiency has not been enough to enable widespread applications of solar cells. A fundamental limit to the maximum efficiency of PV devices is given […]
This work is led by Prof. Qingbo Meng, Prof. Dongmei Li (Institute of Physics, the Chinese Academy of Sciences) and Dr. Hongshi Li (Nankai University). Interfacial stability and open-circuit voltage of perovskite solar cells have been mainly limited by defect states in perovskite films. Here, aiming at outstanding interfacial passivation, Prof. Meng’s […]
Solar energy is a clean and renewable source of energy. Solar cells usually consist of a semiconductor material that absorbs sunlight and generates electricity. However, the amount of sunlight that can be converted into electricity is limited. Standard single-junction solar cells are theoretically limited to a maximum power conversion efficiency (PCE) of 30 percent. […]
Solar is a clean, renewable energy source that can help reduce carbon dioxide emissions and reduce our impact on the natural environment. Unlike traditional fossil fuels such as coal and oil, solar energy does not directly cause pollutants (such as carbon dioxide) to be released into the atmosphere and water supply. What is a disadvantage […]
