High performance MnO2@Ni(OH)2 core/shell structure nanowire arrays supported on carbon cloth as advanced electrodes for asymmetric supercapacitors
YAN Hui-jun1,2, BAI Jian-wei2, WANG Yu1, ZHOU Hong-xia1, JING Xiao-yan2, WANG Jun2, BAI Xue-feng1
1. Institute of Petrochemistry Heilongjiang Academy of Sciences, Harbin 150040, China;
2. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
Abstract：MnO2@Ni(OH)2 core/shell structure nanowire arrays (NWAs) supported on carbon cloth were successfully synthesized by a two-step method, applied in flexible all-solid-state asymmetric supercapacitors (ASCs). The Ni(OH)2 nanosheets wrapped on the surface of each MnO2 nanowire uniformly, which can increase the capacitance of MnO2 NWAs to a high specific capacitance of 432.8F/g at 5mV/s. The electrode also exhibits good cycling ability, 92.3% of the initial capacity can be remained after 2000 cycles at 5A/g. The assembled MnO2@Ni(OH)2//MnO2 asymmetric device with a maximum voltage of 1.8V has been fabricated, delivering both high energy density (69.2Wh/kg) and power density (4.5kW/kg at 54.6Wh/kg). These results show that MnO2@Ni(OH)2 NWAs with large specific surface area, combined with the flexible carbon cloth substrate can be applied in supercapacitor field in large scale.
闫慧君, 白建伟, 王玉, 周红霞, 景晓燕, 王君, 白雪峰. 负载高性能MnO2@Ni(OH)2核/壳纳米线阵列碳布电极的非对称超级电容器性能研究[J]. 材料工程, 2019, 47(11): 115-122.
YAN Hui-jun, BAI Jian-wei, WANG Yu, ZHOU Hong-xia, JING Xiao-yan, WANG Jun, BAI Xue-feng. High performance MnO2@Ni(OH)2 core/shell structure nanowire arrays supported on carbon cloth as advanced electrodes for asymmetric supercapacitors. Journal of Materials Engineering, 2019, 47(11): 115-122.
[1] JIANG H, LI C Z, SUN T, et al. High-performance supercapacitor material based on Ni(OH)2 nanowire-MnO2 nanoflakes core-shell nanostructures[J]. Chemical Communications, 2012, 48:2606-2608.
[2] WANG G P, ZHANG L, ZHANG J J, et al. A review of electrode materials for electrochemical supercapacitors[J]. Chemical Society Reviews, 2012, 41:797-828.
[3] EDDY A L M, SHAIJUMON M M, GOWDA S R, et al. Coaxial Mn CV carbon nanotube array electrodes for high-performance lithium batteries[J]. Nano Letters, 2009, 9:1002.
[4] FAN Z J, LIU Y, YAN J, et al. Template-directed synthesis of pillared-porous carbon nanosheet architectures:high-performance electrode materials for supercapacitors[J]. Materials Views, 2012, 2:419-424.
[5] YAN H J, BAI J W, WANG B, et al. Electrochemical reduction approach-based 3D graphene/Ni(OH)2 electrode for high-performance supercapacitors[J]. Electrochimica Acta, 2015, 154:9-16.
[6] YANG C, SUN M Q, WANG X, et al. A novel flexible supercapacitor based on cross-linked PVDF-HFP porous organogel electrolyte and carbon nanotube paper@π-conjugated polymer film electrodes[J]. ACS Sustainable Chemistry & Engineering, 2015, 3:2067-2076.
[7] BAI J W, YAN H J, LIU Q, et al. Synthesis of layered α-Ni(OH)2/RGO composites by exfoliation of α-Ni(OH)2 for high-performance asymmetric supercapacitors[J]. Materials Chemistry and Physics, 2018, 204:18-26.
[8] WANG Z Y, WANG F P, TU J H, et al. Nickel foam supported hierarchical mesoporous MnO2/Ni(OH)2 nanosheet networks for high performance supercapacitor electrode[J]. Materials Letters, 2016, 171:10-13.
[9] BAO L H, ZANG J F, LI X D. Flexible Zn2SnO4/MnO2 core/shell nanocable-carbon microfiber hybrid composites for high-performance supercapacitor electrodes[J]. Nano Letters, 2011, 11(3):1215-1220.
[10] SIEGEL A C, PHILLIPS S T, DICKEY M D, et al. Foldable printed circuit boards on paper substrates[J]. Advanced Functional Materials, 2010, 20:28-35.
[11] CHEN J Z, XU J L, ZHOU S, et al. Amorphous nanostructrured FeOOH and Co-Ni double hydroxides for high-performance aqueous asymmetric supercapacitor[J]. Nano Energy, 2016, 21:145-153.
[12] CHEN H, HU L F, YAN Y, et al. One-step fabrication of ultrathin porous nickel hydroxide-manganese dioxide hybrid nanosheets for supercapacitor electrodes with excellent capacitive performance[J]. Advanced Energy Materials, 2013, 3:1636-1646.
[13] ZHU G Y, HE Z, CHEN J, et al. Highly conductive three-dimensional MnO2-carbon nanotube-graphene-Ni hybrid foam as a binder-free supercapacitor electrode[J]. Nanoscale, 2014, 6:1079-1085.
[14] SHAO M F, NING F Y, ZHAO J W, et al. Hierarchical layered double hydroxide microspheres with largely enhanced performance for ethanol electrooxidation[J]. Advanced Functional Materials, 2013, 23:3513-3518.
[15] LU Z Y, CHANG Z, ZHU W, et al. Beta-phased Ni(OH)2 nanowall film with reversible capacitance higher than theoretical Faradic capacitance[J]. Chemical Communications, 2011, 47:9651-9653.
[16] FENG L, LI G, ZHANG S, et al. Decoration of carbon cloth by manganese oxides for flexible asymmetric supercapacitors[J]. Ceramics International, 2017, 43:8321-8328.
[17] XU J S, SUN Y D, LU M J, et al. Fabrication of hierarchical MnMoO4·H2O@MnO2 core-shell nanosheet arrays on nickel foam as an advanced electrode for asymmetric supercapacitors[J]. Chemical Engineering Journal, 2018, 334:1466-1476.
[18] XU H H, HU X L, YANG H L, et al. Flexible asymmetric micro-supercapacitors based on Bi2O3 and MnO2 nanoflowers:lager areal mass promises higher energy density[J]. Materials Views, 2015, 5:1401882.
[19] WANG T, LE Q J, ZHANG J M, et al. Carbon cloth@T-Nb2O5@MnO2:a rational exploration of manganese oxide for high performance supercapacitor[J]. Electrochimica Acta, 2017, 253:311-318.
[20] LIU X J, LIU J F, SUN X M. NiCo2O4@NiO hybrid arrays with improved electrochemical performance for pseudocapacitors[J]. Journal of Materials Chemistry:A, 2015, 3:13900.
2019, Vol. 47 
