have a look at what Wikipedia page says about yr Q in part answers it...also being the lightest Metal on the Elements Empirical Table with high electro-conductivity properties makes it a highly suitable metal for battery applications of hand-held devices & Passenger Vehicles
https://en.wikipedia.org/wiki/Lithium_as_an_investment

Lithium as an investment

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Lithium company stocks on the worldwide exchanges have rallied from the end of 2020 and through 2021 with many Lithium Explorers/Developers/Producer miners' share prices' rising 1000% to 6000% within 12 months on the ASX: the Australian Securities Stock Exchange. Stocks are expected to continue to rally as a shortfall deficit of Lithium supply world-wide is expected from beginning of 2022. The Battery-grade Lithium deficit is expected to persist to an incredible 2030, as there are not enough mines coming online to supply the demand in EV Batteries & Energy Storage systems to 2030. This makes Lithium a highly lucrative commodity to invest into, the term: entered a "Lithium commodities Super-cycle" has been used by industry commentators during 2021 to describe the event, also the term "A Once in a Century" event is occurring in 2021 and will persist till new Energy technologies come online to replace Lithium Batteries, this is not expected till after 2040 as there are no technologies that will be suitable for the diversity of applications for Lithium Energy storage systems. Lithium carbonate prices have made a resurgence from 2019-2020 all time lows, rising some 500% as of 21/11/2021 trading at US$29,000/tonne,^[2] Lithium Carbonate/Lithium Hydroxide is a Lithium chemical compound also known as LCE(Lithium Carbonate Equivalent) and is used as a Precursor in the manufacture of Cathode Cells for electric vehicle (EV) batteries. As a result and along with major Governmental new energy policies in 2020, in preparation to the fazing out of fossil fuels & reductions in carbon emissions vehicles & coal power, has kick-started a flurry of renewed investments & Joint Ventures/acquisitions between Miners & Strategic major investor companies throughout the world.

Recently the world saw the COP26: Climate Change Summit for Action in Glasgow during November 2021. The agreements signed by all countries involved, has accelerated the action towards renewables adoption & the reforestation among other items & actions. Lithium will play a key & critical role towards the reduction of Carbon emissions, "1.5ToStayAlive" "1.5toSurvive" slogans for maintaining the critical 1.5 degrees & the storage of renewables clean green energy, harnessed from the sustainable wind, solar & hydropower, also tidal. Also big on the COP26 agenda was the fazing out of coal all-together.

Lithium is an essential mineral that goes into the manufacture of electric batteries (Lithium-ion battery: portable electronics, EV and renewable ESS^[3]). Lithium supply is expected to fall short of the demand for this metal by 2022.^[4] Demand/supply discrepancy "the Great divide" ratio has been witnessed in July 2021 when the BMX Spot price Platform went live and the price for Lithium Spodumene Concentrate 6% (SC6) reached a record price of US$1,400/tonne, rising from its lowest of US$395/tonne in September 2020. Today SC6 price(21 November 2021) trades at US$2,550/tonne, Australia's Pilbara Minerals, the company that developed the BMX Spot Sales Platform are commended for this initiative with Ken Brinson, CEO, saying the price for Spodumene Concentrate 6% is now transparent to the market making it a fairer playing field for the Miners and the Chemical Converter Customers.

Governments are adopting the New Energy Lithium Technology rapidly as the pressure to meet the Paris Agreement CO2 Carbon emissions reductions. Major Car Manufacturers are planning on a large line-up of new Electric Vehicles by 2025, in what's called the "EV Revolution". The growing adoption of electric vehicles (EVs) is driving the increasing demand for lithium, significant amounts of lithium supply will need to be brought online to meet this demand growth to 2030 and beyond. The situation is seen as critical as the world depends on Lithium.