TY - JOUR
T1 - Vertical-Aligned and Ordered-Active Architecture of Heterostructured Fibers for High Electrochemical Capacitance
AU - Zhu, Xiaolin
AU - Qiu, Hui
AU - Zhang, Yang
AU - Man, Zengming
AU - Lu, Wangyang
AU - Bao, Ningzhong
AU - Wu, Guan
N1 - Publisher Copyright:
© Donghua University, Shanghai, China 2024. corrected publication 2024.
PY - 2024/2
Y1 - 2024/2
N2 - Architecture of fibrous building blocks with ordered structure and high electroactivity that enables quick charge kinetic transport/intercalation is necessary for high-energy-density electrochemical supercapacitors. Herein, we report a heterostructured molybdenum disulfide@vertically aligned graphene fiber (MoS2@VA-GF), wherein well-defined MoS2 nanosheets are decorated on vertical graphene fibers by C–O–Mo covalent bonds. Benefiting from uniform microfluidic self-assembly and confined reactions, it is realized that the unique characteristics of a vertical-aligned skeleton, large faradic activity, in situ interfacial connectivity and high-exposed surface/porosity remarkably create efficiently directional ionic pathways, interfacial electron mobility and pseudocapacitive accessibility for accelerating charge transport and intercalation/de-intercalation. Resultant MoS2@VA-GF exhibits large gravimetric capacitance (564 F g−1) and reversible redox transitions in 1 M H2SO4 electrolyte. Furthermore, the MoS2@VA-GF-based solid-state supercapacitors deliver high energy density (45.57 Wh kg−1), good cycling stability (20,000 cycles) and deformable/temperature-tolerant capability. Beyond that, supercapacitors can realize actual applications of powering multicolored optical fiber lamps, wearable watch, electric fans and sunflower toys. Graphical Abstract: (Figure presented.).
AB - Architecture of fibrous building blocks with ordered structure and high electroactivity that enables quick charge kinetic transport/intercalation is necessary for high-energy-density electrochemical supercapacitors. Herein, we report a heterostructured molybdenum disulfide@vertically aligned graphene fiber (MoS2@VA-GF), wherein well-defined MoS2 nanosheets are decorated on vertical graphene fibers by C–O–Mo covalent bonds. Benefiting from uniform microfluidic self-assembly and confined reactions, it is realized that the unique characteristics of a vertical-aligned skeleton, large faradic activity, in situ interfacial connectivity and high-exposed surface/porosity remarkably create efficiently directional ionic pathways, interfacial electron mobility and pseudocapacitive accessibility for accelerating charge transport and intercalation/de-intercalation. Resultant MoS2@VA-GF exhibits large gravimetric capacitance (564 F g−1) and reversible redox transitions in 1 M H2SO4 electrolyte. Furthermore, the MoS2@VA-GF-based solid-state supercapacitors deliver high energy density (45.57 Wh kg−1), good cycling stability (20,000 cycles) and deformable/temperature-tolerant capability. Beyond that, supercapacitors can realize actual applications of powering multicolored optical fiber lamps, wearable watch, electric fans and sunflower toys. Graphical Abstract: (Figure presented.).
KW - Electrochemical supercapacitors
KW - High capacitance
KW - Ion directional diffusion
KW - Microfluidic assembly
KW - Self-powered applications
KW - Vertical-aligned structure
UR - http://www.scopus.com/inward/record.url?scp=85181518597&partnerID=8YFLogxK
U2 - 10.1007/s42765-023-00349-6
DO - 10.1007/s42765-023-00349-6
M3 - 文章
AN - SCOPUS:85181518597
SN - 2524-7921
VL - 6
SP - 312
EP - 328
JO - Advanced Fiber Materials
JF - Advanced Fiber Materials
IS - 1
ER -