Global EV Phase-Change Materials Market Size, Share & Growth Forecast (2026-2031)

The global EV phase-change materials market is estimated at USD 90.0 million in 2026 and is projected to reach USD 285.0 million by 2031, at a CAGR of 25.9% during the forecast period.

Market Overview

Phase-change materials regulate heat by absorbing latent energy as they transition between solid and liquid, solid and solid, or other engineered states. In EV batteries, the material can be positioned around cells, modules or thermal interfaces to absorb short-duration heat spikes and reduce temperature gradients. Unlike pumps or refrigeration loops, the material itself does not consume electrical power during the phase transition. This creates an efficiency advantage in conditions where thermal peaks are intermittent rather than continuous.

The technology is most relevant where passive control can reduce the burden on active cooling without replacing it entirely. A 2025 SAE study found that a hybrid system combining PCM and liquid cold plates limited battery temperature more effectively than liquid cooling alone under the tested conditions. Another 2025 SAE study on bio-based composite PCM showed that adding PCM and copper fins reduced cell surface temperatures under higher discharge rates. These results support the commercial direction toward hybrid architectures rather than stand-alone PCM cooling in high-power EVs.

The market excludes ordinary thermal interface materials, conventional coolant fluids, cold plates, heat pumps and complete battery thermal-management systems. It includes only the PCM material and directly attributable encapsulation or conductivity-enhancement layers used to provide latent-heat buffering. This keeps the market distinct from KSI's EV battery-cooling reports and from broader thermal interface material markets.

Market Dynamics

• Higher Battery Power Density Increases the Value of Thermal Buffering

EV batteries are being designed for faster charging, higher continuous power and more compact packaging. These trends increase local heat generation and temperature gradients, especially during high-rate charge and discharge. Phase-change materials can absorb short thermal peaks and delay the point at which active cooling must operate at full capacity. The value proposition becomes stronger as OEMs seek to reduce auxiliary energy consumption while preserving battery life.

• Hybrid Cooling Architectures Improve Commercial Relevance

Research and prototype activity increasingly combines PCM with liquid cold plates, fins, graphite structures or heat pipes. Hybrid designs address the key weakness of many PCMs: low thermal conductivity. The combination allows latent heat to absorb thermal spikes while conductive structures and liquid loops remove stored heat over a longer period. This makes PCM more practical for high-power EV use than passive material alone.

• Material Engineering Is Expanding Beyond Conventional Paraffin

Organic paraffin-based PCMs remain the most widely studied class because of chemical stability and predictable transition temperatures. However, development is broadening toward bio-based materials, salt hydrates, eutectic systems and graphite-enhanced composites. Conductivity-enhanced formulations are especially important because they improve heat transfer into and out of the PCM without losing the latent-heat advantage.

• Weight, Packaging and Re-Solidification Remain Commercial Constraints

PCM adds material mass and occupies pack volume, while repeated melting and re-solidification can complicate mechanical design. Passive PCM also requires a path to reject stored heat after a high-load event. These constraints mean the technology is more likely to complement active cooling than fully replace it in mainstream passenger EVs. Commercial adoption will therefore depend on whether the reduction in cooling-system load and temperature peaks justifies the added material and packaging cost.

Technological Outlook

• Organic Phase-Change Materials

Organic PCMs, particularly paraffin-based formulations, offer chemically stable melting behavior and are available across useful automotive temperature ranges. Their main limitation is relatively low thermal conductivity, which is commonly addressed through graphite, metallic foams, fins or other heat-spreading structures.

• Inorganic and Eutectic Materials

Inorganic PCMs can provide higher latent heat density and different phase-transition characteristics, but issues such as corrosion, phase separation and supercooling can complicate automotive use. Eutectic systems allow transition temperatures to be tailored more precisely and may gain relevance in specialised pack designs.

• Composite and Conductivity-Enhanced PCM

Composite PCM is becoming one of the most commercially important development areas. Expanded graphite, carbon structures, metal foams and encapsulation can improve thermal conductivity, structural stability and integration into battery modules. These enhancements raise material cost but reduce the performance gap between passive PCM and active cooling.

• Hybrid PCM-Liquid Cooling

Hybrid architectures combine PCM's ability to absorb transient heat with the sustained heat-removal capability of liquid cooling. This arrangement can reduce maximum cell temperature and improve temperature uniformity while allowing the active system to operate less aggressively under moderate loads.

Segment Analysis

• By Material Type - Organic PCM

Organic phase-change materials generate approximately USD 46.8 million in 2026 and are projected to grow at around 23.5% CAGR through 2031. Paraffin-based materials dominate current research and prototype activity because of their stable phase-change behaviour and availability across relevant operating temperatures. Their future share will depend on continued improvements in conductivity and flame-resistance performance.

• By Material Type - Composite and Conductivity-Enhanced PCM

Composite and conductivity-enhanced materials account for approximately 34% of the market in 2026 and are projected to expand at around 29.5% CAGR through 2031. These formulations are gaining attention because graphite, fins and other conductive structures address the slow heat-transfer characteristics of unmodified PCM while preserving latent-heat storage.

• By Application - Battery-Pack Thermal Management

Battery-pack applications account for approximately 81% of global revenue in 2026 and are projected to approach USD 240 million by 2031. The segment includes PCM positioned around cells, modules and thermal spreaders to control temperature rise and improve uniformity. Power-electronics applications remain smaller but may grow as compact inverter and charger designs increase thermal density.

• By Vehicle Type - Passenger Battery Electric Vehicles

Passenger BEVs account for approximately 72% of the market in 2026 and are projected to grow at roughly 24.5% CAGR through 2031. Adoption is concentrated in high-performance, premium and advanced battery-pack designs where the value of thermal uniformity and reduced peak load can justify added material cost.

• By Vehicle Type - Commercial Electric Vehicles

Commercial EV applications account for approximately 15% of the market in 2026 and are projected to reach about USD 50 million by 2031. Longer duty cycles, higher battery throughput and repeated fast charging create a stronger need for thermal buffering, especially where active cooling systems operate near continuous load.

• By Geography - Asia Pacific

Asia Pacific generates approximately USD 52.2 million in 2026 and is projected to grow at around 26.8% CAGR through 2031. China leads because of its large EV and battery-manufacturing base, while Japan and South Korea contribute materials, electronics and battery engineering capabilities. India is emerging as a research and pilot market alongside rapid EV production growth.

Market and Demand Indicators

Asia Pacific Market Analysis

Asia Pacific is the largest EV phase-change materials market because the region contains the highest concentration of electric vehicle production, lithium-ion battery manufacturing and thermal-management engineering. China is the principal volume market, supported by large battery and vehicle platforms. Japan and South Korea contribute advanced materials, battery chemistry and electronics expertise, while India is increasingly visible in PCM-based battery thermal-management research and engineering.

The region's advantage is especially important for composite PCM because battery makers and materials suppliers can co-develop pack structures, thermal spreaders and encapsulated materials close to final vehicle production. As EV charging rates and pack density increase, Asia Pacific is expected to remain the main test bed for high-volume thermal-management material integration through 2031.

Competitive Landscape

The competitive environment includes specialty chemical suppliers, thermal-interface material producers, advanced materials companies and automotive thermal-management specialists. Henkel has direct automotive exposure through phase-change thermal interface products for EV power conversion. Other relevant participants include Parker LORD, Boyd, Croda, Honeywell, Climator, Rubitherm, Pluss Advanced Technologies, PureTemp and PCM Products, alongside graphite, encapsulation and thermal-composite suppliers.

Competition is driven by phase-transition temperature, latent heat capacity, thermal conductivity, flammability, cycle stability, packaging compatibility and ease of integration. Suppliers that can provide encapsulated or structurally stable composite PCM are better positioned for automotive adoption because OEMs require repeatable material behaviour over long service lives.

Recent Developments

• June 2026: A systematic review in the World Electric Vehicle Journal compared organic, inorganic and eutectic PCMs for EV battery thermal-management applications.

• October 2025: Materials published a review of advanced EV battery thermal-management systems, identifying PCM as a key passive thermal-management strategy.

• September 2025: SAE published a critical assessment of PCM for EV efficiency, including modeled reductions in active-cooling operation.

• April 2025: SAE published research on bio-based composite PCM with copper fins for EV battery thermal management.

• February 2025: SAE published a study evaluating PCM integrated with liquid cold plates in an EV battery thermal-management system.

EV Phase-Change Materials Market Scope