Archives for May, 2021
Lithium-ion batteries were first available in 1991, typically replacing nickel metal hydride batteries. However, they are limited in terms of energy storage, efficiency of power conversion and safety, and they do have a tendency to catch fire. There are a number of battery technologies that appear superior to lithium-ion, however…
Nitrogen is “fixed” as ammonia (NH3) primarily by way of the Haber-Bosch process. This takes nitrogen from the air, hydrogen from natural gas and combines them at a 1:3 ratio and heats the mixture to 400OC at a pressure of 200 atm to form ammonia. There are various “green” ammonia…
I first published this article in November 2020. It is largely unchanged, except I have added share price and other data for May 2021. Where relevant, I have updated the text for each company. Most have seen very good gains, helped in no small part by the impressive gains in…
Helium is the only element not discovered on earth, but in the spectrum of the sun’s radiation. On earth helium is formed through the radioactive breakdown of uranium and thorium. It typically occurs with natural gas at up to 1% concentration, but it can also occur with other elements such…