Highly Efficient, Mild Synthesis of ββ-Co(OH)2 Nanoplatelets with an Application to Supercapacitor Electrode
ZHANG Hongyu1,2, LI Zhiying1,2, ZENG Rong1,2
1 Department of Energy Materials and Technology,General Research Institute for Nonferrous Metal, Beijing 100088; 2 Beijing Engineering Research Center of Non-ferrous Metal Products for New Energy, Beijing 100088
Abstract: A highly efficient, mild (also dispersant-free) method has been developed in this work for synthesizing β-Co(OH)2nanoplatelets, by using hydrated cobalt chloride as raw material, sodium hydroxide and hydrazine hydrate as alkaline precipitating agents. The morphology and microstructure of the product were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The edge length of hexagonal β-Co(OH)2 nanoplatelets is about 100—200 nm and the thickness is about tens of nanometers. As the concentration of cobalt chloride solution decreasing, the thickness of the single-chip of β-Co(OH)2 gets attenuated. The electrochemical performances of the as-synthesized samples were investigated by cyclic voltammetry and constant-current charge/discharge test. The thinner cobalt hydroxide will lead to higher specific capacitance of β-Co(OH)2, and it can reach 83.3 F/g at the current density of 1 A/g along with a high stability.
1 Simon P, Gogotsi Y. Materials for electrochemical capacitors[J]. Nat Mater, 2008,7(11):845. 2 Zhou W J, Zhang J, Xue T, et al. Electrodeposition of ordered mesoporous cobalt hydroxide film from lyotropic liquid crystal media for electrochemical capacitors[J]. J Mater Chem, 2008,18(8):905. 3 Xie X Y, Zhang C,Yang Q H. The development of electrode materials for supercapacitors[J]. Chem Ind Eng, 2014,31(1):63(in Chinese). 谢小英, 张辰, 杨全红. 超级电容器电极材料研究进展[J]. 化学工业与工程, 2014,31(1):63. 4 Shang H T, Yue L P, Yang X K, et al. The struct and application development of supercapacitor[J]. Chem Eng Equipment, 2014(9):177 (in Chinese). 商洪涛, 岳立平, 杨献奎,等. 超级电容器结构及应用发展概述[J]. 化学工程与装备, 2014(9):177. 5 Javashrtt R S, Vishnu Kamath P. Electrochemical synthesis of[small alpha]-cobalt hydroxide[J]. J Mater Chem,1999,9(4):961. 6 Yan X, Tong X, Wang J, et al. Synthesis of mesoporous NiO nanoflake array and its enhanced electrochemical performance for supercapacitor application[J]. J Alloys Compd, 2014,593(6):184. 7 Lee J W, Ahn T, Soundararajan D, et al. Non-aqueous approach to the preparation of reduced graphene oxide/α-Ni(OH)2 hybrid composites and their high capacitance behavior[J]. Chem Commun, 2011,47(22):6305. 8 Wang L, Fu J, Zhang Y, et al. Mesoporous β-Co(OH)2, nanowafers and nanohexagonals obtained synchronously in one solution and their electrochemical hydrogen storage properties[J]. Prog Nat Sci Mater Int, 2016,26:555. 9 Zheng X. Ultrathin porous nickel-cobalt hydroxide nanosheets for high-performance supercapacitor electrodes[J]. RSC Adv, 2015,5(22):17007. 10 Lu X. Controllable synthesis of porous nickel-cobalt oxide nanos-heets for supercapacitors[J]. J Mater Chem, 2012,22(26):13357. 11 Jia Z J,Wang J, Wang Y. Research progress of the electrode materials for electrochemical capacitors[J]. Energy Storage Sci Technol, 2014(4):322(in Chinese). 贾志军, 王俊, 王毅. 超级电容器电极材料的研究进展[J]. 储能科学与技术, 2014(4):322. 12 Liu M B,Duan L W,Yin W Z. Study on composing and application of electrode material additive Co(OH)2[J].Mining Metall, 2011(3):57(in Chinese). 刘明宝, 段理祎, 印万忠. 电极材料添加剂氢氧化亚钴的合成及应用研究[J]. 矿冶, 2011(3):57. 13 Yongge L V, Yong L I, Na T A, et al. Co3O4 nanosheets:Synthesis and catalytic application for CO oxidation at room temperature[J]. Sci China Chem, 2014,57(6):873. 14 El-Batlouni H, El-Rassy H, Al-Ghoul M. Cosynthesis, coexistence, and self-organization of α- and β-cobalt hydroxide based on diffusion and reaction in organic gels[J]. J Phys Chem A, 2008,112(34):7755. 15 Gupta A, Tiwari S D, Kumar D. Nature of magnetic interactions in β-Co(OH)2 nanoparticles[J]. Phys Status Solidi, 2016,253(9):1795. 16 Ismail J, Ahmed M F, Kamath P V, et al. Organic additive-mediated synthesis of novel cobalt(Ⅱ) hydroxides[J]. J Solid State Chem, 1995,114(114):550. 17 Ma M X, Liang J F, Ding C M. Structure and wetting properties of rose-like cobalt hydroxide[J]. Chin J Inorgan Chem, 2015,31(6):1071. 18 Wang B X, Lin H, Yin Z G. Hydrothermal synthesis of β-cobalt hydroxide with various morphologies in water/ethanol solutions[J]. Mater Lett, 2011,65(1):41. 19 Schwezer B, Roth K M, Gomm J R, et al. Kinetically controlled vapor-diffusion synthesis of novel nanostructured metal hydroxide and phosphate films using no organic reagents[J]. J Mater Chem, 2006,16(4):401. 20 Xu Z P, Zeng H C. A new approach for design and synthesis of Co Ⅱ, and Co Ⅱ,Ⅲ, hydroxide materials[J]. Int J Inorgan Mater, 2000,2(2-3):187. 21 Ting Z, Hao J, Jan M. Surfactant-assisted electrochemical deposition of α-cobalt hydroxide for supercapacitors[J]. J Power Sources, 2011,196(2):860. 22 Kong L B, Lang J W, Liu M, et al. Facile approach to prepare loose-packed cobalt hydroxide nano-flakes materials for electroche-mical capacitors[J]. J Power Sources, 2009, 194(2):1194. 23 Chang Z R,Li B,Li Y P, et al. Studies on the electrochemical properties of cobalt hydroxide[J]. Chem World, 2003,44(11):566(in Chinese). 常照荣, 李苞, 李云平,等. Co(OH)2的电化学性能研究[J]. 化学世界, 2003, 44(11):566. 24 Feng Z H. Research on preparation and electrochemical properties of β-Co(OH)2 by solid-state reactions at room temperature[D].Qinhuangdao: Yanshan University,2009(in Chinese). 冯忠厚. β-Co(OH)2的室温固相制备和电化学性能研究[D]. 秦皇岛:燕山大学, 2009. 25 Ganesh V, Lakshminarayanan V, Pitchumani S. Assessment of liquid crystal template deposited porous nickel as a supercapacitor electrode material[J]. Electrochem Solid-State Lett, 2005,8(6):A308. 26 Hou Y, Kondoh H, Shimojo M, et al. High-yield preparation of uniform cobalt hydroxide and oxide nanoplatelets and their characte-rization[J]. J Phys Chem B, 2005,109(41):19094. 27 Cui T, Zhao Y, Qian Y, et al. Controllable synthesis and formation mechanism of single-crystal β-Co(OH)2, microrings as sensors for detection of nitrite ions[J]. Mater Chem Phys, 2017,193:371. 28 Mo L P, Shi J, Feng X J, et al. Synthesis of sheet-like Co(OH)2 and its electrochemical performances[J].J Northwest Normal University (Nat Sci), 2008, 44(1):56(in Chinese). 莫丽萍, 石俊, 冯晓娟,等. 片状Co(OH)2的制备及其电化学性能研究[J]. 西北师范大学学报(自然科学版), 2008,44(1):56. 29 Zhu Z F, Lv J, Liu H, et al. Hydrothermal synthesis and characterization morphology-controlled of Co3O4 nanocrystals[J].J Synthetic Crystals, 2015(11):2988(in Chinese). 朱振峰, 吕景, 刘辉,等. 形貌可控Co3O4纳米晶的水热合成及表征[J]. 人工晶体学报, 2015(11):2988. 30 Yao W L,Yang J,Cheng H W. Hydrothermal synthesis and effects on morphology of micro-/nano- materials of hexagona β-Co(OH)2[J]. Sci Sin Chim, 2010(11):1598(in Chinese). 姚文俐, 杨军, 程红伟. 微/纳米六方β-Co(OH)2水热法制备及影响因素[J]. 中国科学:化学, 2010(11):1598. 31 Zhu L W, Yan Y H, Jia H, et al. Hydrothermal one-step synthesis of layered nickel/cobalt double hydroxide using shape-directing agent and homogeneous precipitating agent[J]. J Electrochem, 2016(4):412. 32 Deng D, Xing X, Chen N, et al. Hydrothermal synthesis of β-Co(OH)2, nanoplatelets: A novel catalyst for CO oxidation[J].J Phys Chem Solids, 2017,100:107. 33 Xie L J, Jin X Q, Fu G R, et al. Preparation and electrochemical capacitance of α-Co(OH)2 for supercapacitors[J].Chem J Chin Universities, 2010,31(2):353(in Chinese). 谢莉婧, 金小青, 付国瑞,等. α-Co(OH)2的制备及其超级电容特性[J]. 高等学校化学学报, 2010,31(2):353. 34 Li H, Liu Y, Zhao X C. Magnetic ultrafine cobalt particles prepared by solution chemical reduction method[J]. J Magnetic Mater Devices, 2012,43(2):36(in Chinese). 李红, 刘颖, 赵修臣. 液相化学还原法制备的超细钴粒子[J]. 磁性材料及器件, 2012, 43(2):36. 35 Zheng H G, Zeng J H, Yu H M, et al. Study on behavior of hydrazine hydrate in synthesis of metallic nanopowders[J]. J University of Science and Technology of China, 1999(6):722(in Chinese). 郑化桂, 曾京辉, 余华明,等. 联氨在金属纳米粉制备中的行为研究[J]. 中国科学技术大学学报, 1999(6):722. 36 Shi Z Y. Study on performance of membrane electrode assembly for proton exchange membrane fuel cells[D]. Tianjin:Tianjin University,2006(in Chinese). 石肇元. 质子交换膜燃料电池膜电极性能的研究[D]. 天津:天津大学, 2006. 37 Srinivasan V, Weidner J W. Capacitance studies of cobalt oxide films formed via electrochemical precipitation[J]. J Power Sources, 2002,108(1-2):15. 38 Dong L,Li Y,Liu T J, et al. Solvothermal synthesis and electrochemical property of Co(OH)2 /activated carbon composites[J]. J Synthetic Crystals, 2015,44(8):2217(in Chinese).
董丽, 李影, 刘铁军,等. 溶剂热合成Co(OH)2/活性炭复合电极材料及其电化学性能研究[J]. 人工晶体学报, 2015,44(8):2217. 39 Fu G R,Hu Z A. Preparation of Co(OH)2 by precipitation and its electrochemical performance[J].Mater Mechan Eng, 2013(8):31(in Chinese). 付国瑞, 胡中爱. 沉淀法制备Co(OH)2及其电化学性能[J]. 机械工程材料, 2013(8):31. 40 Tang H W,Si Y L,Guo D L, et al. Synthesis and electrochemical properties of multilayer α-Co(OH)2[J].Mater Rev:Res, 2014,28(4):46(in Chinese). 汤宏伟, 司艳丽, 郭东磊,等. 多层球形α-Co(OH)2的制备及其电化学性能[J]. 材料导报:研究篇, 2014,28(4):46.
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