Core Viewpoint - The research introduces a novel mechanism called "slip-enhanced close-contact melting" (sCCM) to enhance the charging rate of phase-change thermal batteries without sacrificing energy density [4][5]. Group 1 - The phase-change thermal battery utilizes materials like paraffin, hydrated salts, and sugar alcohols to store heat through phase change latent heat, but high energy density and rapid charging/discharging are typically conflicting requirements [3]. - The research team achieved a new record power density of 1100 ± 2% kW/m³ in their prototype using organic phase-change materials [5]. - The proposed strategy involves a rational design of composite coatings that facilitate sCCM, integrating a pulse heating layer to pre-melt phase-change materials and a slip interface to maintain efficient melting during charging [5]. Group 2 - The strategy is adaptable and scalable, making it applicable to various phase-change materials across a wide temperature range, thus enabling high-performance thermal energy storage [6].

Core Viewpoint - The development of a new strategy to enhance energy density in composite phase change materials through hydrogen bond enhancement is a significant advancement in thermal energy storage technology [1] Group 1: Research Findings - A team led by Professor Fan Liwu and PhD student Li Zhirui from Zhejiang University has proposed a method to restore energy density in composite phase change materials [1] - The use of hydroxylated graphene significantly improves the latent heat recovery of erythritol composite materials compared to unmodified graphene [1] Group 2: Implications and Applications - This strategy is based on commercially available hydroxylated nanofillers, making it easy to apply across various phase change material systems, including polyols, fatty acids, and hydrated salts [1] - The approach provides a feasible technical pathway for developing the next generation of high-performance, long-life thermal energy storage and management systems, with potential applications in renewable energy integration, industrial energy conservation, and electronic thermal management [1]