TY - JOUR
T1 - Three-dimensional honeycomb composites consist of metal carbides and layered double hydroxides for high-performance supercapacitor electrode materials
AU - Dai, Yuming
AU - Sun, Chao
AU - Gul, Hajera
AU - Tan, Linghua
AU - Guo, Yue
AU - Qiu, Dongqin
AU - Gu, Yutong
AU - Chen, Yuju
AU - Ge, Chengtong
AU - Huang, Dongqian
AU - Chen, Boyu
AU - Hua, Jingwen
AU - Zhao, Jie
PY - 2024/5/15
Y1 - 2024/5/15
N2 - To achieve excellent electrochemical performance and stability, a composite material based on metal carbides (MXene) and CoNiZn layered double hydroxides (LDHs) has been synthesized, which synergistically combines the high electrical conductivity of MXene with the high theoretical specific capacity of LDHs. The as-prepared three-dimensional honeycomb-structural MXene/CoNiZn LDH composites have excellent cycle stability with a capacitance retention rate of 87.8% after 100,000 cycles and outstanding electrochemical activity with a specific capacitance of 2044.9 F g−1 at a scan rate of 5 mV s−1. Furthermore, electrochemical impedance spectroscopy also shows a reduced internal resistance indicating that the honeycomb-porous structure facilitates electron transfer and ion diffusion. This study provides a feasible route to develop high-performance supercapacitor electrode materials. © 2024 Elsevier B.V.
AB - To achieve excellent electrochemical performance and stability, a composite material based on metal carbides (MXene) and CoNiZn layered double hydroxides (LDHs) has been synthesized, which synergistically combines the high electrical conductivity of MXene with the high theoretical specific capacity of LDHs. The as-prepared three-dimensional honeycomb-structural MXene/CoNiZn LDH composites have excellent cycle stability with a capacitance retention rate of 87.8% after 100,000 cycles and outstanding electrochemical activity with a specific capacitance of 2044.9 F g−1 at a scan rate of 5 mV s−1. Furthermore, electrochemical impedance spectroscopy also shows a reduced internal resistance indicating that the honeycomb-porous structure facilitates electron transfer and ion diffusion. This study provides a feasible route to develop high-performance supercapacitor electrode materials. © 2024 Elsevier B.V.
KW - Layered double hydroxides
KW - MXene
KW - Nanoarray
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85187218054&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85187218054&origin=recordpage
U2 - 10.1016/j.jpowsour.2024.234306
DO - 10.1016/j.jpowsour.2024.234306
M3 - RGC 21 - Publication in refereed journal
SN - 0378-7753
VL - 602
JO - Journal of Power Sources
JF - Journal of Power Sources
M1 - 234306
ER -