材料科学
氮化硼
导电体
热导率
数码产品
纳米技术
纳米管
小型化
退火(玻璃)
钻石
柔性电子器件
碳纳米管
复合材料
物理化学
化学
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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