材料科学
纳米技术
制作
微尺度化学
复合数
超级电容器
导电体
碳纳米管
纳米复合材料
数码产品
功率密度
复合材料
光电子学
电化学
电极
电气工程
功率(物理)
医学
物理
化学
数学教育
替代医学
数学
工程类
病理
物理化学
量子力学
作者
Beibei Wang,Weiye Zhang,Chenhuan Lai,Yi Liu,Huajun Guo,Daihui Zhang,Zhanhu Guo
出处
期刊:Small
[Wiley]
日期:2023-09-03
标识
DOI:10.1002/smll.202302335
摘要
Abstract Strong, conductive, and flexible materials with improving ion accessibility have attracted significant attention in electromagnetic interference (EMI) and foldable wearable electronics. However, it still remains a great challenge to realize high performance at the same time for both properties. Herein, a microscale structural design combined with nanostructures strategy to fabricate TOCNF(F)/Ti 3 C 2 T x (M)@AgNW(A) composite films via a facile vacuum filtration process followed by hot pressing (TOCNF = TEMPO‐oxidized cellulose nanofibrils, NW = nanowires) is described. The comparison reveals that different microscale structures can significantly influence the properties of thin films, especially their electrochemical properties. Impressively, the ultrathin MA/F/MA film with enhanced layer in the middle exhibits an excellent tensile strength of 107.9 MPa, an outstanding electrical conductivity of 8.4 × 10 6 S m −1 , and a high SSE/t of 26 014.52 dB cm 2 g −1 . The assembled asymmetric MA/F/MA//TOCNF@CNT (carbon nanotubes) supercapacitor leads to a significantly high areal energy density of 49.08 µWh cm −2 at a power density of 777.26 µW cm −2 . This study proposes an effective strategy to circumvent the trade‐off between EMI performance and electrochemical properties, providing an inspiration for the fabrication of multifunctional films for a wide variety of applications in aerospace, national defense, precision instruments, and next‐generation electronics.
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