Lightweight Materials for Electric Vehicle

Abstract

The rapid adoption of electric vehicles (EVs) relies on overcoming challenges in driving range, cost, and energy efficiency, with lightweight materials playing a crucial role. Reducing vehicle mass directly improves performance, increasing driving range by about 8–10% for every 10% weight reduction. A multi-material approach combining Advanced High-Strength Steels (AHSS), aluminum alloys, magnesium alloys, and polymer composites offers the best results. Aluminum is widely used due to its balance of strength and cost, while Carbon Fiber Reinforced Polymers (CFRP) provide greater weight savings but are expensive and difficult to recycle. Although light weighting enhances range, performance, and enables battery downsizing, challenges such as high material costs, manufacturing complexity, and recycling issues remain.