材料科学
氮化硼
导电体
数码产品
纳米技术
纳米管
氮化物
电子设备和系统的热管理
热的
碳纳米管
复合材料
电气工程
机械工程
物理
图层(电子)
气象学
工程类
作者
Yue Yue,Xiaoran Yang,Kai Yang,Kangyong Li,Zexin Liu,Fanfan Wang,Rong Zhang,Jianyu Huang,Zhiqiang Wang,Lifu Zhang,Guoqing Xin
标识
DOI:10.1021/acsami.4c05971
摘要
Flexible electronics toward high integration, miniaturization, and multifunctionality, leading to a dramatic increase in power density. However, the low thermal conductivity of flexible substrates impedes efficient heat dissipation and device performance improvement. In this work, we propose a template-assisted chemical conversion strategy for obtaining boron nitride nanotube (BNNT) films with high thermal conductivity and great flexibility. Aligned carbon nanotube (CNT) films have been adopted as templates; a low-temperature chemical conversion followed by a high-temperature annealing has been carried out to produce a highly ordered BNNT film. Benefiting from the high orientation order, the BNNT film exhibits an exceptional thermal conductivity of 45.5 W m
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