Yet more development is needed, particularly in regard to the electrode materials in the battery, to ensure that electric vehicles are widely adopted. The International Energy Agency reported that the global number of electric passenger cars increased from 2 million to 3.1 million in 2017. While this growth rate is impressive, electric cars account for only about 0.3% of the more than a billion passenger vehicles on the road today. Most consumers are waiting for electric vehicles with greater range, faster charging times, and price tags comparable to combustion-engine cars—all features tied to the battery. Consequently, the U.S. Department of Energy has set goals to increase range to 300 miles, decrease charging time to less than 15 minutes, and reduce the cost of electric-vehicle batteries to less than $100/kWh. A battery pack that costs $100/kWh or less will enable electric vehicles to be cost competitive with internal combustion engine vehicles without the aid of government subsidies, says David Howell, the deputy director for the U.S. Department of Energy’s Vehicle Technologies Office. Developing better battery materials will play an important role in reaching the $100/kWh goal.
by Jordan C. Axelson |
September 25, 2018