Energy

News

25 Jun 2021
Perovskite colloidal quantum dots (Pe-CQDs) are highly promising nanocrystals for optoelectronic applications. However, the size of the crystals should ideally be equal to ensure a consistent energy landscape. In a recent study, scientists clarified the relationship between differences in particle size—polydispersity—and the optoelectronic characteristics of Pe-CQDs. They showed that using equally sized, or ‘monodisperse,’ quantum dots results in markedly better performance in Pe-CQD solar cells, paving the way for future optoelectronic devices.
21 Jun 2021
A tiny device incorporates a compound made from starch and baking soda to harvest energy from movement.
IMAGE
02 Jun 2021
Scientists have found a way to make hydrogen move faster through a solid material at cooler temperatures, paving the way for more sustainable and practical energy storage devices.
01 Jun 2021
Researchers from Korea utilized LiNO3 pre-planted lithium particles to design a stable, long-lasting lithium metal battery
25 May 2021
Scientists develop degradation-mitigating additives that vastly extend the lifespan of Nafion-based fuel cells
19 May 2021
Researchers at the National University of Singapore and Tohoku University have demonstrated that an array of electrically connected spintronic devices can harvest a 2.4 GHz wireless signal, which can be used to power and charge small electronic devices and sensors.
graphene battery concept
13 May 2021
The trick to extremely thin supercapacitors with improved performance is spraying graphene ink at an angle.
fuel cell diagram
13 May 2021
Controlling the organization of molecules within polymer membranes could lead to more efficient fuel cells.
10 May 2021
A new device can light up 100 LED bulbs with a single drop of water.
15 Apr 2021
A research team based at Tohoku University has 3D printed the first proton exchange membrane, a critical component of batteries, electrochemical capacitors and fuel cells.
13 Apr 2021
Scientists develop high performing electrocatalyst to synthesize ammonia in an effort to replace conventional eco-unfriendly methods
Associate Professor Masahiko Fujii of Faculty of Environmental Earth Science.
05 Apr 2021
“The earth is suffering from several ‘diseases’: global warming, ocean acidification, habitat loss, etc. If any of these diseases remains uncured, other diseases will accelerate and cause new ones to appear, hence putting humanity’s well-being in danger,” said Associate Professor Masahiko Fujii. For this reason, the research staff of the Faculty of Environmental Earth Science keeps on assessing the current global environmental issues and promoting renewable energy sources as a possible solution.
01 Apr 2021
The promotion of electric cars has dramatically increased the demand for lithium-ion batteries. However, cobalt and nickel, the main cathode materials for the batteries, are not abundant. If the consumption continues, it will inevitably elevate the costs in the long run, so scientists have been actively developing alternative materials. A joint research team co-led by a scientist from City University of Hong Kong (CityU) has developed a much more stable, manganese-based cathode material. The new material has higher capacity and is more durable than the existing cobalt and nickel cathode materials - 90% of capacity is retained even when the number of charging-recharging cycles doubled. Their findings shed lights on developing low cost and high efficiency manganese-based cathode materials for lithium-ion batteries.
18 Mar 2021
A research team from the Faculty of Engineering of The Chinese University of Hong Kong (CUHK) has recently developed a water-tube-based triboelectric nanogenerator that can efficiently convert various irregular and low-frequency mechanical energies, including ocean wave energy, into electricity, providing a new avenue for the development of “blue energy”.
10 Mar 2021
Energy-efficient light-emitting diodes (LEDs) have been used in our everyday life for many decades. But the quest for better LEDs, offering both lower costs and brighter colours, has recently drawn scientists to a material called perovskite. A recent joint-research project co-led by the scientist from City University of Hong Kong (CityU) has now developed a 2D perovskite material for the most efficient LEDs.
a novel electrode material for ASSBs
18 Feb 2021
Lithium ion batteries use liquid electrolytes that have several drawbacks, which can be overcome by all-solid-state lithium secondary batteries (ASSBs). However, it is important to find efficient electrode materials for ASSBs. A research team from Japan has recently developed a novel electrode material for ASSBs by combining lithium sulfate and lithium ruthenate, which results in improved performance. The scientists hope that their novel approach will guide future research and the eventual commercialization of such high-capacity batteries.
11 Feb 2021
ARN's February newsletter features research about catalyzing plastic recycling, the mental health toll of the COVID-19 pandemic, antiperovskites and oolong tea. In honor of International Day of Women and Girls in Science, we also have tips for addressing gender bias in STEM communications, and inspirational stories about pioneering female scientists from our Giants in History series. Read on...
12 Jan 2021
An atomic switch is bringing us closer to highly effective solid-state batteries for electric vehicles.
Thermoelectric conversion
23 Dec 2020
Scientists at Hokkaido University have developed a layered cobalt oxide with a record-setting thermoelectric figure of merit, which can be used to enhance thermoelectric power generation.
19 Dec 2020
The SNEC 15th (2021) International Photovoltaic Power Generation and Smart Energy Conference will be held on June 2-4, 2021 in Shanghai, China.
Schematic illustration of the distribution of the materials in the semiconductor layer for the OPV cell.
09 Dec 2020
Researchers at Hiroshima University in Japan have blended together various polymer and molecular semiconductors as photo-absorbers to create a solar cell with increased power efficiencies and electricity generation.
23 Nov 2020
A chance discovery leads to a simple process that can introduce ‘oxygen-missing layers’ into perovskite oxynitrides, changing their properties.
20 Nov 2020
A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has recently reported a significant discovery that could bring solar hydrogen production a step closer to reality.
20 Nov 2020
A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a new eco-friendly and low-cost method to synthesize indolopyran, one type of nitrogen ring compound, contained in about 60% of drugs that are recently approved by FDA.
20 Nov 2020
A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has developed a ‘carbon-based high-efficiency electrochemical catalyst’ for use to produce H2O2.
20 Nov 2020
A research team, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has developed an electrolyte additive (MA-C60) to reduce the problematic behaviors induced by water contamination and the ROS generated from Li‐rich cathodes.
17 Nov 2020
Scientists explain how selective electrostatic doping can balance the charge in optoelectronic devices with 2D materials
10 Nov 2020
Scientists create a 3D digital “twin” of an all-solid-state battery to visualize its interfacial microstructures in detail
03 Nov 2020
A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has developed a new nanocatalyst that recycles major greenhouse gases, such as carbon dioxide (CO2) and methane (CH4), into highly value-added hydrogen (H2) gas.
03 Nov 2020
A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled 2D material-based ultrasensitive surface-enhanced Raman spectroscopy (SERS) sensor by synthesizing uniform large-area ReOxSy thin films.

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Researchers

Ulsan National Institute of Science and Technology (UNIST)
Kyoung- Jin Choi
Prof. Kyoung- Jin Choi leads the Energy Conversion Materials Lab at Ulsan National Institute of Science and Technology (UNIST). He is also the editor of Electronic Materials Letters.
Professor in Agriculture and Education in the Iloilo Science and Technology University Leon Campus (ISAT U). Leon, ILOILO, PHILIPPINES