Lithium-ion batteries are one of the most popular types of rechargeable battery currently in use. They’re used in everything from cell phones to laptops to electric cars, and they have a number of advantages over other types of batteries: they’re lightweight, they have high energy density and fast charging speeds, and they’re relatively safe.
But lithium-ion batteries still have some drawbacks. For example, they can catch on fire if damaged—which is why we never recommend putting them in your checked luggage when flying. And while they may be generally safe for consumers, there are concerns about their impact on the environment—especially since these batteries contain heavy metals like cobalt and nickel that can be difficult to dispose of safely.
These days, many companies are looking into alternatives to lithium ion batteries—like solid state technologies. Solid state batteries are made up of solid electrodes (instead of liquid or gas-based ones), which can hold more energy than their conventional counterparts. They also don’t need electrolytes like liquid electrolytes do—meaning they could potentially be cheaper (and safer). This makes them ideal for use in electric vehicles where weight matters most!