1766 – Henry Cavendish publishes in "On Factitious Airs" a description of "dephlogisticated air" by reacting zinc metal with hydrochloric acid and isolates a gas 7 to 11 times lighter than air.
1784 – Jean-Pierre Blanchard attempts a dirigible hydrogen balloon, but it was unable to steer.
1784 – The invention of the Lavoisier Meusnier iron-steam process,[1] generating hydrogen by passing water vapor over a bed of red-hot iron at 600°C.[2]
1874 – Jules Verne – The Mysterious Island: "Yes, my friends, I believe that water will one day be employed as fuel, that hydrogen and oxygen which constitute it, used singly or together, will furnish an inexhaustible source of heat and light, of an intensity of which coal is not capable."[8]
1912 – The first scheduled international Zeppelin passenger flights with the Zeppelin LZ13.
1913 – Niels Bohr explains the Rydberg formula for the spectrum of hydrogen by imposing a quantization condition on classical orbits of the electron in hydrogen.
1919 – The first Atlantic crossing by airship with the BeardmoreHMA R34.
1920 – Hydrocracking, a plant for the commercial hydrogenation of brown coal is commissioned at Leuna in Germany.[11]
1923 – Steam reforming, the first synthetic methanol is produced by BASF in Leuna.
1923 – J. B. S. Haldane envisions in Daedalus; or, Science and the Future "great power stations where during windy weather the surplus power will be used for the electrolytic decomposition of water into oxygen and hydrogen".
1929 – The hydrogen-filled LZ 127 Graf Zeppelin makes a 33,234km (20,651mi; 17,945 nmi) circumnavigation of the world. It is the first and only airship to do so, and the second circumnavigation of the globe by air. The voyage took a total of 21 days, 5 hours, and 31 minutes.
1930 – Rudolf Erren – Erren engine – patent CH148238A – Improvements in and relating to internal combustion engines using a mixture of hydrogen and oxygen as fuel.[12]
1955 – W. Thomas Grubb modifies the fuel cell design by using a sulphonated polystyrene ion-exchange membrane as the electrolyte.
1957 – Pratt & Whitney's model 304 jet engine using liquid hydrogen as fuel tested for the first time as part of the Lockheed CL-400 Suntan project.[15]
2013 – The first commercial 2 megawatt power to gas installation in Falkenhagen comes online for 360 cubic meters of hydrogen per hour hydrogen storage into the natural gas grid.[25]
2021 – Enapter, co-founded by Vaitea Cowan, is awarded the 2021 Earthshot Prize for the ‘Fix our Climate’ category for its AEM Electrolyser technology, which turns renewable electricity into emission-free hydrogen gas.[29]RAF gains Guinness World Record for the first successful flight powered by synthetic fuel produced from green hydrogen generated by EMEC in Orkney.
2022 – Researchers in Cambridge develop floating artificial leaves for light-driven hydrogen production. The lightweight, flexible devices are scalable and can float on water similar to lotus leaves.[30]
2023 – Toyota's liquid hydrogen powered Corolla participates in the Super Taikyu Fuji 24 Hours Race where it beats gaseous hydrogen powered Corolla's previous record by completing 358 laps (1,634 km).[31]