TY - JOUR
T1 - Facile synthesis of mesoporous Ni0.3Co2.7O 4 hierarchical structures for high-performance supercapacitors
AU - Wu, Hao Bin
AU - Pang, Huan
AU - Lou, Xiong Wen
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2013/12
Y1 - 2013/12
N2 - In this work, we report the facile synthesis of mesoporous nickel cobalt oxide (Ni0.3Co2.7O4) hierarchical structures with excellent supercapacitive performance. Nickel cobalt oxalate hydrate (Ni0.1Co0.9C2O4·nH 2O) is first synthesized as the precursor via a facile precipitation method, followed by controlled annealing to obtain mesoporous Ni 0.3Co2.7O4 hierarchical structures. The sample prepared at a relatively low annealing temperature (400 °C) possesses more abundant mesopores and higher specific surface area, and exhibits excellent supercapacitive performance in aqueous alkaline electrolytes. An exceptionally high specific capacitance of 960 and 805 F g-1 is obtained under current densities of 0.625 and 6.25 A g-1, respectively, with excellent cyclic stability. The remarkable electrochemical performance is attributed to the desirable composition and the unique hierarchical mesoporous architectures. © 2013 The Royal Society of Chemistry.
AB - In this work, we report the facile synthesis of mesoporous nickel cobalt oxide (Ni0.3Co2.7O4) hierarchical structures with excellent supercapacitive performance. Nickel cobalt oxalate hydrate (Ni0.1Co0.9C2O4·nH 2O) is first synthesized as the precursor via a facile precipitation method, followed by controlled annealing to obtain mesoporous Ni 0.3Co2.7O4 hierarchical structures. The sample prepared at a relatively low annealing temperature (400 °C) possesses more abundant mesopores and higher specific surface area, and exhibits excellent supercapacitive performance in aqueous alkaline electrolytes. An exceptionally high specific capacitance of 960 and 805 F g-1 is obtained under current densities of 0.625 and 6.25 A g-1, respectively, with excellent cyclic stability. The remarkable electrochemical performance is attributed to the desirable composition and the unique hierarchical mesoporous architectures. © 2013 The Royal Society of Chemistry.
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U2 - 10.1039/c3ee42101e
DO - 10.1039/c3ee42101e
M3 - RGC 21 - Publication in refereed journal
SN - 1754-5692
VL - 6
SP - 3619
EP - 3626
JO - Energy and Environmental Science
JF - Energy and Environmental Science
IS - 12
ER -