TY - JOUR
T1 - Wet spinning of MXene (V2CTX) based fiber fabric with high electrochemical performance for flexible supercapacitor
AU - Qiu, Dianchun
AU - Zheng, Kai
AU - Guan, Tuxiang
AU - Li, Zemei
AU - Peng, Juan
AU - Tao, Qing
AU - Yan, Kelan
AU - Bao, Ningzhong
N1 - Publisher Copyright:
© 2024
PY - 2024/7/5
Y1 - 2024/7/5
N2 - Flexible supercapacitor is highly important to future wearable textile electronics and metaverse technologies, yet they are still limited by their unfulfilled specific capacitance and energy density. Here, a MXene (V2CTX) based fiber fabric (MFF) was developed via a synergistic flow driven assembly strategy for high-performance supercapacitors. Adapted through reliable approaches of indirect etching, organic cation intercalation, and wet spinning, the MFF presents rich active sites, ordered paths, a moderate specific surface area (41.1 m2 g−1), good flexibility and reproducibility. Admirably, the resulting fibrillar meshwork structure was found to be highly conducive to increasing energy density and reducing the electrochemical polarization. In this regard, a relatively good capacitance of 731 F g−1 is achieved at a current density of 0.5 A g−1 in H2SO4 electrolyte. Furthermore, the assembled asymmetric solid-state supercapacitor (FSC) exhibits high specific capacitance of 401.2 F g−1 at 0.5 A g−1, long cycle stability (5000 cycles) and high mechanical flexibility (5000 bending cycles). Benefiting from this outstanding electrochemical performance, the FSCs using EMIBF4/PVDF-HFP as electrolyte can be implied as reliable power source to flexible displaying and health monitoring. This work provides a novel MXene (V2CTX) based fiber fabric for constructing flexible electrode, promising to open an avenue toward wearable devices.
AB - Flexible supercapacitor is highly important to future wearable textile electronics and metaverse technologies, yet they are still limited by their unfulfilled specific capacitance and energy density. Here, a MXene (V2CTX) based fiber fabric (MFF) was developed via a synergistic flow driven assembly strategy for high-performance supercapacitors. Adapted through reliable approaches of indirect etching, organic cation intercalation, and wet spinning, the MFF presents rich active sites, ordered paths, a moderate specific surface area (41.1 m2 g−1), good flexibility and reproducibility. Admirably, the resulting fibrillar meshwork structure was found to be highly conducive to increasing energy density and reducing the electrochemical polarization. In this regard, a relatively good capacitance of 731 F g−1 is achieved at a current density of 0.5 A g−1 in H2SO4 electrolyte. Furthermore, the assembled asymmetric solid-state supercapacitor (FSC) exhibits high specific capacitance of 401.2 F g−1 at 0.5 A g−1, long cycle stability (5000 cycles) and high mechanical flexibility (5000 bending cycles). Benefiting from this outstanding electrochemical performance, the FSCs using EMIBF4/PVDF-HFP as electrolyte can be implied as reliable power source to flexible displaying and health monitoring. This work provides a novel MXene (V2CTX) based fiber fabric for constructing flexible electrode, promising to open an avenue toward wearable devices.
KW - Fiber supercapacitors
KW - Flexible energy storage
KW - MXene
KW - MXene fiber
KW - Wet spinning
UR - http://www.scopus.com/inward/record.url?scp=85190537621&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2024.174230
DO - 10.1016/j.jallcom.2024.174230
M3 - 文章
AN - SCOPUS:85190537621
SN - 0925-8388
VL - 991
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 174230
ER -