Preparation and electrochemistry of cobalt-nickel composite microsphere with three-dimensional porous structure
Zhang Gaini ,Ren Lijun
Department of Chemistry and Chemical Engineering,Baoji University of Arts and Sciences, Engineering Research Center of Advanced Ferroelectric Functional Materials, Shaanxi Key Laboratory of Phytochemistry,Baoji 721013
Abstract: Cobalt-nickel composite microspheres(CoNi-CM) with good dispersity and uniformity in size were synthesized by hydrothermal method using Ni(NO3)2·6H2O,Co(NO3)2·6H2O and CO(NH2)2 as precursors.The unique three-dimensional architecture greatly improved the faradaic redox reaction and electrolyte ions transfer.The results of electrochemical measurements in three-electrode configuration showed that CoNi-CM electrode exhibited the high specific capacitance,good rate performance and superior cycle stability.CoNi-CM was expected to be the optional electrode material for high performance supercapacitor.
Manthiram A,Vadivel Murugan A,Sarkar A,et al.Nanostructured electrode materials for electrochemical energy storage and conversion[J].Energy Environ Sci,2008,2(1):621-638.
[2]
Chu S,Majumdar A.Opportunities and challenges for a sustainable energy future[J].Nature,2012,488(7411):294-303.
[3]
Liu C,Li F,Ma L P,et al.Advanced materials for energy storage[J].Adv Mater,2010,22(8):E28-E62.
[4]
Lin T,Chen I W,Liu F,et al.Nitrogen-doped mesoporous carbon of extraordinary capacitance for electrochemical energy storage[J].Science,2015,350(6267):1508-1513.
[5]
Kim H K,Bak S M,Lee S W,et al.Scalable fabrication of micron-scale graphene nanomeshes for high-performance supercapacitor applications[J].Energy Environ Sci,2016,9:1270-1281.
[6]
Augustyn V,Simon P,Dunn B.Pseudocapacitive oxide materials for high-rate electrochemical energy storage[J].Energy Environ Sci,2014,7(5):1597-1614.
[7]
Shi F,Li L,Wang X L,et al.Metal oxide/hydroxide-based materials for supercapacitors[J].RSC Advances,2014,4(79):41910-41921.
[8]
Nagaraju G,Raju G S,Ko Y H,et al.Hierarchical Ni-Co layered double hydroxide nanosheets entrapped on conductive textile fibers:a cost-effective and flexible electrode for high-performance pseudocapacitors[J].Nanoscale,2016,8(2):812-825.
Coudun C,Hochepied J F.Nickel hydroxide “stacks of pancakes” obtained by the coupled effect of ammonia and template agent[J].J Phys Chem B,2005,109(13):6069-6074.
[13]
Liu Z,Ma R,Osada M,et al.Selective and controlled synthesis of α- and β-Cobalt hydroxides in highly developed hexagonal platelets[J].J Amer Chem Soc,2005,127(40):13869-13874.
Zhang K,Han X P,Hu Z,et al.Nanostructured Mn-based oxides for electrochemical energy storage and conversion[J].Chem Soc Rev,2015,44(3):699-728.
[16]
Qi L,Hu X,Qian Y,et al.Electrocapacitive performance of graphene/Co3O4 hybrid material prepared by a nanosheet assembly route[J].Electrochim Acta,2014,119:184-191.
[17]
Zhang G,Ren L,Yan Z,et al.Mesoporous-assembled MnO2 with large specific surface area[J].J Mater Chem A,2015,3:14567-14572.
[18]
Dong L,Liang G,Xu C,et al.Multi hierarchical construction-induced superior capacitive performances of flexible electrodes for wearable energy storage[J].Nano Energy,2017,34:242-248.
Cheng P,Li T,Yu H,et al.Biomass-derived carbon fiber aerogel as a binder-free electrode for high-rate supercapacitors[J].J Phys Chem C,2016,120(4):2079-2086.
[21]
Jing M,Hou H,Banks C E,et al.Alternating voltage introduced NiCo double hydroxide layered nanoflakes for an asymmetric supercapacitor[J].ACS Appl Mater & Inter,2015,7(41):22741-22744.
[22]
Wang X,Li X,Du X,et al.Controllable synthesis of NiCo LDH nanosheets for fabrication of high-performance supercapacitor electrodes[J].Electroanalysis,2017,29(5):1286-1293.