Key Findings
Chinese automaker MG (SAIC) has unveiled plans to introduce three new plug-in hybrid SUVs (PHEVs) in 2027, which will feature the company’s proprietary ‘SolidCore’ semi-solid-state battery technology. This announcement follows the successful mass production of semi-solid-state electric vehicles (EVs) such as the MG4, demonstrating a strategic extension of their battery innovation. MG’s SolidCore semi-solid-state batteries are specifically designed to deliver enhanced energy conversion efficiency, faster power response, and significantly improved range and charging speeds under extreme temperature conditions, both cold and hot, compared to conventional liquid-electrolyte batteries.
Technical Details
MG’s SolidCore semi-solid-state battery represents a hybrid technology that aims to enhance safety and performance by replacing a portion of the liquid electrolyte with a solid electrolyte. This technology reduces fire risk due to less liquid electrolyte content and leverages the solid electrolyte’s mechanical strength and stability. The improvement in performance under extreme temperatures is particularly critical for addressing challenges faced by many EVs. In cold conditions, liquid electrolyte viscosity often increases, leading to performance degradation; semi-solid technology mitigates this effect, enabling more stable low-temperature operation. In hot conditions, the solid electrolyte provides thermal stability, maintaining high efficiency while preventing battery overheating. This ensures the battery functions optimally across a wider operating temperature range, enhancing the user experience.
Background & Context
Plug-in hybrid electric vehicles (PHEVs) continue to hold a significant position in the automotive market as they combine the flexibility of an internal combustion engine with the benefits of electric propulsion, offering extended range and EV-only driving capabilities. Advancements in battery technology are key to improving PHEV’s EV driving range, fuel efficiency, and overall environmental performance. MG’s adoption of semi-solid-state batteries for PHEVs indicates that this technology is an effective solution for enhancing performance and safety across diverse electrified vehicle types, not just pure EVs. Chinese automakers are leading the world in battery technology innovation, and MG’s SolidCore technology is a prime example of this trend.
Strategic Significance & Outlook
MG’s plan to introduce PHEVs equipped with SolidCore semi-solid-state batteries in 2027 signifies the impact of evolving battery technology on the PHEV market. The enhanced performance in extreme temperatures will be a significant advantage for consumers in colder regions or fleet vehicles operating in high-temperature environments. This will further boost the appeal of PHEVs, potentially capturing demand from consumers hesitant to fully transition to EVs. MG’s success is likely to encourage other automakers to accelerate the adoption of semi-solid-state batteries across their electrified vehicle lineups, further stimulating technological innovation and market competition within the broader battery industry.
Source: https://electrek.co/2026/07/09/mg-launch-first-phev-with-semi-solid-state-batteries-2027/
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