Aerogel-phase change material (PCM) host-guest composites (A-PHCs), comprising of PCMs and aerogels, have attracted great attentions in various applications, such as thermal energy storage and smart textile, etc. However, A-PHCs usually suffer from intrinsic brittleness of solid PCMs and weak mechanical strength of aerogels, making the achievement of light, thin, flexible, and robust A-PHCs a great challenge. Herein, a densified graphene aerogel (d-GA) film with thickness of tens of micrometers, fabricated by press-forging of GA fibers, was utilized to make an aerogel-PCM host-guest film (APHF) by simple infiltration of PCM (e.g., paraffin) into the d-GA film. Benefitting from the compact porous structure of GA film, the as-obtained APHF exhibits superior mechanical strength and flexibility over pure PCM: the fracture strength was up to 29.6 MPa, about 3-20 times higher than those of any other reported APHFs and it can be bent into a camber with a bent angle (θ) of 180° and a small curve radius lower than ~300 μm. It also possesses high thermal conductivity (up to 2.0 W/mK), high energy density (~182.5 J/g), and thermosensitive imaging, thermal regulating, and thermal generating properties. These unique properties open a few applications for the APHFs to work as the advanced smart energy management units in the future portable and wearable systems.

由PCM和气凝胶组成的气凝胶相变材料（PCM）主体-客体复合材料（A-PHC）在诸如热能存储和智能纺织品等各种应用中引起了极大的关注。然而，A-PHC通常会遭受固体PCM的固有脆性和气凝胶的弱机械强度，使得轻，薄，柔性和坚固的A-PHC成为一个巨大的挑战。在本文中，通过对GA纤维进行压锻而制造的厚度为几十微米的致密石墨烯气凝胶（d-GA）膜被用于通过简单地渗透PCM（例如，水凝胶）来制备气凝胶-PCM主客体膜（APHF）。 ，石蜡）放入d-GA膜中。得益于GA膜的致密多孔结构，所获得的APHF具有比纯PCM优异的机械强度和柔韧性：断裂强度高达29.6 MPa，θ）为180°，弯曲半径小于〜300μm。它还具有高导热率（高达2.0 W / mK），高能量密度（〜182.5 J / g）以及热敏成像，热调节和热产生特性。这些独特的特性为APHF在未来的便携式和可穿戴系统中用作高级智能能源管理单元打开了一些应用程序。