Next-Generation Batteries Explained: How They're Transforming Energy and Transportation

Batteries are everywhere, from electric vehicles to smartphones to grid energy storage. They can be mobile or stationary. And next-generation batteries are breaking through the limitations of traditional lithium-ion batteries, delivering safer, more efficient, and more sustainable energy storage solutions.

How Batteries Are Made: From Lithium-Ion to New Types

Currently, lithium-ion batteries are the mainstream choice for consumer electronics and electric vehicles. But next-generation batteries, including sodium-ion batteries, solid-state batteries, and flow batteries, offer more advantages, such as longer range, higher safety, and potential cost reductions. These new batteries may also reduce or eliminate the use of critical materials like lithium, thereby reducing dependence on imports and rare minerals.

Lithium-Ion vs. Sodium-Ion Batteries

Most lithium-ion or sodium-ion batteries consist of a cathode, an anode, an electrolyte, and a separator. Sodium-ion batteries use the more abundant element sodium and are expected to become a low-cost alternative to lithium-ion.

Solid-State Batteries

Solid-state batteries use a solid electrolyte and do not require a separate separator. Because they are less prone to leaking and less affected by expansion at high temperatures, they offer higher safety.

Flow Batteries

Flow batteries operate based on redox reactions, in which two liquid electrolytes exchange ions or protons through a porous membrane. They can store large amounts of energy and do not use flammable or polluting materials.

Applications of Next-Generation Batteries

Innovations in battery technology have unlocked a wide range of applications, including:

• Personal devices: smartphones, smartwatches, power tools

• Electric transportation: electric vehicles, e-bikes, electric boats

• Medical devices: hearing aids, insulin pumps, pacemakers

• Renewable energy storage: paired with wind and solar power to provide uninterrupted electricity

Advantages and Challenges

Since their invention, batteries have played a key role in advancing the adoption of advanced energy and transportation technologies. For example, grid energy storage allows clean energy such as solar power to be generated and stored when conditions are favorable, ensuring a reliable electricity supply even on cloudy or rainy days.

The advantages of next-generation batteries include:

• Greater safety (less prone to catching fire)

• Less dependence on critical materials, rare minerals, or surface mining

• Higher energy density (electric vehicles can travel farther on a single charge)

Support from the U.S. Department of Energy

The U.S. Department of Energy (DOE) and its Advanced Materials and Manufacturing Technologies Office (AMMTO) are helping the domestic manufacturing supply chain meet the growing demand for next-generation batteries. By advancing innovations from R&D to market, AMMTO drives technological progress that ultimately benefits consumers and industry.

In addition, DOE and AMMTO support manufacturers in adopting standardized, scalable "platform manufacturing technologies" to save time and resources and shorten the time-to-market for new energy storage products. This not only helps strengthen U.S. energy independence but also creates well-paying jobs for Americans.AMMTO also focuses on improving battery performance, including reliability, safety, rechargeability, and energy storage capacity, making them better able to withstand the demanding conditions of various application scenarios such as electric vehicles, aircraft, and smartwatches.

Conclusion

Next-generation batteries are moving from the laboratory to reality. Through continued investment and cross-industry collaboration, battery technology will provide stronger support for the clean energy transition and smart living.