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Lithium-sulfur (Li-S) battery can be put into practice, if 20% of theoretical energy densities (2600 Wh/kg or 2800 Wh/L) can be achieved. Investigators have the ambition to reach the energy density of 500 Wh/kg in the near future. Xue-Ping Gao and co-workers, from Nankai University, tell us "Till no more
Doctors use X-rays to see inside people, and scientists use neutrons to peer inside advanced materials and devices such as fuel cells to better understand and improve them. But a critical shortage of a rare form of helium used for detecting neutrons—which are difficult to spot directly—threatens to more
Lithium ion batteries have come a long way since their introduction in the late 1990s. They're used in many everyday devices, such as laptop computers, mobile phones, and medical devices, as well as automotive and aerospace platforms, and others. However, lithium ion battery performance still can de more
7 Up's original recipe contained Lithium - so what happens if you drop Lithium metal into modern 7 Up... The results surprised us. more
Lithium ion battery technology offers many advantages in portable power application but one major concern is safety – thermal runaway of the device in both normal and abusive situations. In the following article, it will be shown that by means of adi more
Lithium Ion is becoming the technology choice for HEV, PHEV, as well as many stationary applications. With such large battery packs it is important to understand how the individual cells and packs will behave in a variety of scenarios. One of the mai more
Rolling-element bearings are used for the precise guidance of moving parts. Frictional losses are extremely small because the bearings rest on rolling elements, enabling very heavy loads to be adsorbed. Rolling-element bearings may be lubricated with more
I wanted to display all the key points about each group of elements, in a way that was both clear and engaging for the pupils – as a consequence, the information presented is relatively basic, so that it’s accessible for as many of the year groups as possible. I also tried to include some informatio more
In this month’s Periodic Graphics in C&EN, we’re looking at the chemistry behind the recent news stories of lithium-ion batteries in some devices catching fire. You can see the full graphic over on the C&EN site. Also, for more lithium battery chemistry, head over to the recent RealTimeChem Week gra more
This graphic looks at the colour of various metal and metalloid ions that occur during flame tests. Most people probably remember doing this experiment in school chemistry lessons, if not with the full range of ions shown here, but for the uninitiated a brief explanation of the origin of the colours more
We report the magnetic field and particle-concentration dependent steady-state shear-responses of rod shaped Li-Zn ferrite particles based magnetorheological fluids (MRFs). The rod-shaped soft ferrimagnetic Li-Zn ferrite (Li0.4Zn0.2Fe2.4O4) particles were synthesized by combustion synthesis method. more
The hydrogen absorption properties of metal closo-borate/metal hydride composites, M2B10H10–8MH and M2B12H12–10MH, M = Li or Na, are studied under high hydrogen pressures to understand the formation mechanism of metal borohydrides. The hydrogen storage properties of the composites have been investig more
There has been intensive concentration and effort on addressing the notorious challenges of Li-S batteries with respect to the polysulphide utilization and the lithium dendrite inhibition. However, the search and optimisation of the Li-metal-free full cell design remain relatively pre-mature in term more
There is no doubt that fluorine industry has been one of the fastest developing and most promising chemical industries in China and China is the second largest economy in the world. Thus, fluorine chemicals, such as inorganic fluoride, refrigerant, fluor-polymer and fluor-intermediate four main sect more
China abounds in phosphorite and its output ranked the world’s first by 36.9% share of the global total in 2010. The vigorous downstream demand has fueled the rapid progress of Chinese phosphorous chemical industry in recent years, and the respective output of such traditional phosphorous chemical p more
STELLA CHEMIFA CORPORATION (STELLA CHEMIFA) is one of the leading producers of fluorine compounds in Japan. The company offers a range of market products and technology essential to the modern electronics industry such as liquid crystal panels, semiconductors, and lithium batteries. Its operations a more
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