TY - JOUR
T1 - Facile Design of Flexible, Strong, and Highly Conductive MXene‐Based Composite Films for Multifunctional Applications
AU - Wang, Beibei
AU - Zhang, Weiye
AU - Lai, Chenhuan
AU - Liu, Yi
AU - Guo, Hongwu
AU - Zhang, Daihui
AU - Guo, Zhanhu
N1 - Funding information: This research was funded by the National Natural Science Foundation of China (32001283), Natural Science Foundation of Beijing Municipality (6184045), National Key R&D Program of China (2017YFD0601104), and the Fundamental Research Funds for the Central Universities (2018ZY12). The authors would like to thank Scientific Research N power (www.yanbotimes.cn) and Shiyanjia Lab (www.shiyanjia.com) for the equivalent circuit fitting and AFM tests.
PY - 2023/12/27
Y1 - 2023/12/27
N2 - 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
3C
2T
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.
AB - 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
3C
2T
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.
KW - MXene
KW - cellulose nanofibers
KW - electromagnetic interference shielding
KW - energy storage
KW - silver-nanowires
KW - structural design
UR - http://www.scopus.com/inward/record.url?scp=85169464590&partnerID=8YFLogxK
U2 - 10.1002/smll.202302335
DO - 10.1002/smll.202302335
M3 - Article
SN - 1613-6810
VL - 19
JO - Small
JF - Small
IS - 52
M1 - 2302335
ER -