A Shape-Memory, Room-Temperature Flexible Phase Change Material for Battery Thermal Management

Zhao, Xiangyu; Ke, Lu; Wang, Shuo; Wang, Binghui; Li, Huang; Zou, Deqiu

doi:10.2139/ssrn.4327264

Cited by 1 publication

(2 citation statements)

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“…As a supplementary note, the self-crosslinking of OBC within the PW exhibits a similar trend, indicating a significant flexibility modulation effect of peroxide-based chemical cross-linking compared to physical blending (Table S4, Supplementary). flexibility and enthalpy of our F-FSPCMs with those in literature [24][25][26][38][39][40][41][42][43][44][45][46][47][48][49][50] . And the detailed information is shown in Table S4 (Supplementary).…”

Section: Flexibility and Leakage-proof Properties Of F-fspcmssupporting

confidence: 51%

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Ultraflexible, cost-effective and scalable polymer-based phase change composites for wearable thermal management

Jing

Zhao

Cao

et al. 2023

Preprint

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Phase change materials (PCMs) offer great potential for realizing zero-energy thermal management due to superior thermal storage and stable phase-change temperature. However, the liquid leakage and solid rigidity of PCMs are two long-standing challenges for PCM-based wearable thermal management applications. Herein, a facile and cost-effective strategy is reported, which utilizes the peroxide radical-initiated mechanism to develop ultraflexible polymer-based phase change composites with a dual 3D crosslinked network of olefin block copolymers (OBC) and styrene-ethylene-butylene-styrene (SEBS) inside PCMs. The synergistic effect of OBC-SEBS dual network on brittleness and elasticity enhancement enables the resultant paraffin wax (PW) composites of PW@OBC-SEBS to present outstanding flexibility (strain at break of 20-560%), high latent heat enthalpy (~ 176 J/g), superior thermal stability, and leakage-proof properties. Notably, the proposed peroxide-assisted sequential blending approach overcomes the limitations of traditional heavy processing equipment, achieving low-cost and efficient large-scale production. Furthermore, the applicability of a portable and flexible PW@OBC-SEBS module for wearable thermal management is demonstrated. The energy module can maintain a thermal comfort temperature range of 39-41°C, highlighting the realization of stable temperature control for personal thermotherapy. Our work provides a promising route to fabricate scalable and flexible polymer-based phase change composite for wearable thermal management.

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Section: Flexibility and Leakage-proof Properties Of F-fspcmssupporting

confidence: 51%

“…Fig. 4f presents a comprehensive comparison of the maximum latent heat and degree of flexibility achievable by various typical shaped matrixes [24][25][26][38][39][40][41][42][43][44][45][46][47][48][49][50] . Encouragingly, higher enthalpies and stretchability of F-FSPCMs are achieved in this work.…”

Section: Flexibility and Leakage-proof Properties Of F-fspcmsmentioning

confidence: 99%