TY - JOUR
T1 - Raspberry-like Ni/NiO/CoO/Mn3O4 hierarchical structures as novel electrode material for high-performance all-solid-state asymmetric supercapacitors
AU - Feng, Xuansheng
AU - Huang, Ying
AU - Li, Chao
AU - Li, Yan
AU - Chen, Chen
AU - Liu, P.
N1 - Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/10/15
Y1 - 2019/10/15
N2 - Hybrid transitional metals oxides have been attracted more and more attention in the field of supercapacitors. However, the design of structure and composition of materials is always a challenge due to tedious preparation process and difficult structure construction. Based on above issue, we construct novel raspberry-like Ni/NiO/CoO/Mn3O4 hierarchical structures (NNCMs) with excellent electrochemical performances by one-step hydrothermal process in this work. The introduction of metallic Ni and well-designed hierarchical structures can result in well improved conductivity for electrode material, sufficient channels and active sites for electrolyte ions to enter and contact with electrode material. The NNCMs-16 electrode exhibits a high specific capacitance of 1964 F g−1 and superior cycling stability (95% of initial specific capacitance after 10000 cycles). The assembled NNCMs-16//AC device delivers outstanding energy densities of 70.4 Wh kg−1 at power densities of 794.5 W kg−1. Thus, the raspberry-like NNCMs-16 hierarchical structures can be regarded as promising materials for practical supercapacitors and this work also provides a valuable reference for the preparation and application of high performance electrode materials.
AB - Hybrid transitional metals oxides have been attracted more and more attention in the field of supercapacitors. However, the design of structure and composition of materials is always a challenge due to tedious preparation process and difficult structure construction. Based on above issue, we construct novel raspberry-like Ni/NiO/CoO/Mn3O4 hierarchical structures (NNCMs) with excellent electrochemical performances by one-step hydrothermal process in this work. The introduction of metallic Ni and well-designed hierarchical structures can result in well improved conductivity for electrode material, sufficient channels and active sites for electrolyte ions to enter and contact with electrode material. The NNCMs-16 electrode exhibits a high specific capacitance of 1964 F g−1 and superior cycling stability (95% of initial specific capacitance after 10000 cycles). The assembled NNCMs-16//AC device delivers outstanding energy densities of 70.4 Wh kg−1 at power densities of 794.5 W kg−1. Thus, the raspberry-like NNCMs-16 hierarchical structures can be regarded as promising materials for practical supercapacitors and this work also provides a valuable reference for the preparation and application of high performance electrode materials.
KW - Asymmetric supercapacitor
KW - Excellent electrochemical performances
KW - Hierarchical nanostructures
KW - Ni/NiO/CoO/MnO
UR - http://www.scopus.com/inward/record.url?scp=85067070674&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2019.06.038
DO - 10.1016/j.ceramint.2019.06.038
M3 - 文章
AN - SCOPUS:85067070674
SN - 0272-8842
VL - 45
SP - 18273
EP - 18280
JO - Ceramics International
JF - Ceramics International
IS - 15
ER -