TY - JOUR
T1 - Ultralight Ti3C2Tx/CNF aerogel with outstanding electromagnetic interference shielding efficiency
AU - Kong, Luo
AU - Zhang, Guiqin
AU - Liu, Yijun
AU - Cui, Haodong
AU - Li, Xinyu
AU - Zhong, Xinzi
AU - Huang, Lingyan
AU - Huang, Jianfeng
AU - Cheng, Zhiwen
AU - Liu, Ting
AU - Fan, Xiaomeng
N1 - Publisher Copyright:
© 2024
PY - 2024/6
Y1 - 2024/6
N2 - MXene is widely used as electromagnetic interference (EMI) shielding material due to its excellent electrical conductivity. However, nanosheet structure leads to agglomeration, which has certain limitations on the application. Inspired by bacterial cellulose (BC) has good adhesion and can transform into carbon nanofibers (CNF) after heat treatment, we prepared Ti3C2Tx/CNF aerogels by bidirectional freeze-drying method and heat treatment. Under the bonding effect of BC, the highly conductive phase Ti3C2Tx nanosheets were connected into a periodic porous aerogels, which hindered the agglomeration of Ti3C2Tx nanosheets. BC is converted into CNF after heat treatment, forming a conductive network in aerogel. It significantly improves the EMI shielding performance to 44.5 dB at a thickness of 2 mm. The density of the obtained aerogel is only 24 mg•cm−3, and the specific EMI shielding efficiency (SSE, shielding value/density) value reaches 1844.6 dB cm3 g−1, which has a good comprehensive performance.
AB - MXene is widely used as electromagnetic interference (EMI) shielding material due to its excellent electrical conductivity. However, nanosheet structure leads to agglomeration, which has certain limitations on the application. Inspired by bacterial cellulose (BC) has good adhesion and can transform into carbon nanofibers (CNF) after heat treatment, we prepared Ti3C2Tx/CNF aerogels by bidirectional freeze-drying method and heat treatment. Under the bonding effect of BC, the highly conductive phase Ti3C2Tx nanosheets were connected into a periodic porous aerogels, which hindered the agglomeration of Ti3C2Tx nanosheets. BC is converted into CNF after heat treatment, forming a conductive network in aerogel. It significantly improves the EMI shielding performance to 44.5 dB at a thickness of 2 mm. The density of the obtained aerogel is only 24 mg•cm−3, and the specific EMI shielding efficiency (SSE, shielding value/density) value reaches 1844.6 dB cm3 g−1, which has a good comprehensive performance.
KW - Aerogel
KW - Carbon nano fibers
KW - Electromagnetic interference shielding
KW - TiCTx
UR - http://www.scopus.com/inward/record.url?scp=85183963190&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2024.112710
DO - 10.1016/j.materresbull.2024.112710
M3 - 文章
AN - SCOPUS:85183963190
SN - 0025-5408
VL - 174
JO - Materials Research Bulletin
JF - Materials Research Bulletin
M1 - 112710
ER -