The enhanced thermal transport properties of a heat spreader assembled using non-covalent functionalized graphene. (26th May 2020)

• Record Type: Journal Article
• Authors: Ren, Li; Wang, Mengjie; Wei, Zhouqiao; Cheng, Jingzhen; Liu, Kuo; Pan, Lulu; Lao, Li; Lu, Shaorong; Yu, Jinhong
• Is Part Of: New journal of chemistry. Volume 44:Number 22(2020)
• Page Start: 9337
• Page End: 9343
• Publication Date: 2020-05-26
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj00936a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A brick-and-mortar microstructure was constructed for good thermal transport in graphene paper. Abstract : Though graphene paper consisting of layer-by-layer stacked graphene nanosheets (GNs) has been widely used as a heat spreader due to the high in-plane thermal conductivity, the drawback of graphene paper is that it shows low through-plane thermal conductivity at the same time. In this study, polyamine-functionalized perylene bisimide derivative (APBI)/graphene nanosheet hybrid paper (AGP) samples with a "brick-and-mortar" structure were fabricated via the noncovalent functionalization of GNs and APBI. APBI can not only greatly improve the through-plane thermal transport but it also improves the mechanical properties of AGP. The through-plane thermal conductivity of AGP reaches 6.67 W m −1 K −1 with 42.36 wt% APBI and the tensile strength of AGP reaches 47.9 MPa with 14.22 wt% APBI. AGP, with both good thermal transport properties and mechanical properties, is expected to be used for thermal management applications as a heat spreader in industry.