含铌电容材料的制备及其性能

doi:10.11944/j.issn.1000-0518.2016.02.150264

摘要/Abstract

摘要：

以草酸铌铵和葡萄糖为原料,经水热反应在泡沫镍基底上负载了含Nb的电容材料。通过红外光谱仪(FTIR)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)等技术手段对制备的样品进行表征,比较不同条件下的含Nb电容材料的表面形貌,得出水热反应的最佳工艺条件,并对样品的电化学性能进行了研究。结果表明,制备含Nb电容材料的最佳工艺条件是葡萄糖和草酸铌铵的摩尔比为7:1,反应温度200 ℃,反应时间18 h,在此条件下,负载在泡沫镍上的含Nb氧化物的量为0.3707 g/cm²;当充放电电流密度为0.5 A/g时,含Nb电容材料的最大比电容能达到189.47 F/g,经过1000次循环后,其放电比电容的保持率仍保持在95%以上,是一种具有应用前景的超级电容器材料。

关键词: 泡沫镍, 含铌电容材料, 电流密度, 比电容

Abstract:

Nb-containing capacitor material on foamed nickel substrate was prepared by the hydrothermal reaction with ammonium niobium oxalate and glucose as the starting meterials. The prepared samples was characterized by infrared spectroscopy(FTIR), scanning electron microscopy(SEM), X-ray diffraction(XRD) and electrochemical testing. By comparation of surface topography of products under different conditions, the optimal conditions of hydrothermal reaction for preparing Nb-capacitor material are established as:the molar ratio of glucose and ammonium oxalate is 7:1, and reaction temperature and time are 200 ℃ and 18 h, respectively. The Nb-containing oxide loaded on the foamed nickel is 0.3707 g/cm². The maximum capacity of Nb-containing capacitor material reaches 189.47 F/g at the current density of 0.5 A/g. After 1000 cycles, the discharge capacitance of holding rate remains at 95%. This indicates that it is a promising candidate as the super capacitor materials.

Key words: nickel foam, niobium-capacitance material, current density, capacitance

孙雅茹, 张微微, 李海全. 含铌电容材料的制备及其性能[J]. 应用化学, 2016, 33(2): 221-228.

SUN Yaru, ZHANG Weiwei, LI Haiquan. Preparation and Properties of Niobium-Containing Capacitor Material[J]. Chinese Journal of Applied Chemistry, 2016, 33(2): 221-228.

参考文献

[1]	ZHAO Hua. MnO2/Graphene Carbon Paper Composites Prepared by Electrochemical Deposition Method and Their Capacitance Properties for Capacitor[D]. Taiyuan:Shanxi University,2012(in Chinese). 赵华. 电化学沉积的二氧化锰/石墨烯复合材料的电容性能研究[D]. 太原:山西大学,2012.
[2]	WANG Yuting. Controllable Preparation and Electrochemical Properties of Nano Manganese Dioxide[D]. Dalian:Dalian University of Techonology Department of Chemistry,2011(in Chinese). 王玉婷. 纳米二氧化锰的可控制备及电化学性能研究[D]. 大连:大连理工大学化学工艺系,2011.
[3]	PENG Cheng. Preparation and Properties of Manganese Dioxide and Carbon Nanotube Based Composites[D]. Guangzhou:South China University of Techonology Department of Industrial Catalytic,2012(in Chinese). 彭诚. 基于二氧化锰和碳纳米管的复合材料制备及性能研究[D]. 广州:华南理工大学工业催化系,2012.
[4]	Zheng J P,Jow R J. A New Charge Storage Mechanism for Electrochemical Capacitors[J]. Electrochem Soc,1995,142(1):L6-L7.
[5]	LI Jian,YI Danqing,WEN Junjie,et al.Preparation of a New Low-cost Electrolytic Capacitor Anode Material Niobium Oxide[J]. Chinese J Nonferrous Met,2005,15(6):893-899(in Chinese). 李荐,易丹青,温俊杰,等. 新型电解电容器阳极材料低价铌氧化物的制备[J]. 中国有色金属学报,2005,15(6):893-899.
[6]	CAO Qilin,YAO Weidong. Ceramic Capacitor Prepared by Nb2O5[J]. Rare Met Cem Carbides,2008,36(3):43-44(in Chinese). 曹七林,姚卫东. 陶瓷电容器用Nb2O5的制备[J]. 稀有金属与硬质合金,2008,36(3):43-44.
[7]	XIONG Peng. Powers and Research Doped Piezoelectrics Ceramics Performance Hydrothermal Synthesis Niobate[D]. Xi'an:Shaanxi University of Science & Techonology,2013(in Chinese). 熊鹏. 水热合成铌酸盐粉体及掺杂改性压电陶瓷性能的研究[D]. 西安:陕西科技大学,2013.
[8]	Brezesinski K,Wang J,Haetge J,et al.Pseudocapacitive Contribution to Charge Storage in Highly Ordered Mesoporous Group V Transition Metal Oxides with Iso-Oriented Layered Nanocrystalline Domains[J]. J Am Chem Soc,2010,132(20):6982-6990.
[9]	LI Ge. Synthesis and Electrochemical Properties of Nanostructured Materials Based on Niobium Oxide, Vanadium Oxide, and Their Composites[D]. Shanghai:East China Normal University,2012(in Chinese). 李鸽. 基于钒铌氧化物及其复合材料的合成与电化学储能性能的研究[D]. 上海:华东师范大学,2012.
[10]	HUANG Meng,HU Weibing. Nb2O5 Nanoparticles and Super Capacitor Performance Bar Further Solvothermal[J]. J Cent China Normal Univ(Nat Sci),2013,47(4):501-503(in Chinese). 黄猛,胡卫兵. Nb2O5纳米棒一步溶剂热法合成及其超级电容器性能[J]. 华中师范大学学报(自然科学版),2013,47(4):501-503.
[11]	LI Weiwei,ZHANG Xiangjun,LU Shigang. Nb2O5·nH2O/C Preparation and Characterization[J]. Chem Ind Eng Prog,2010,29(12):2341-2345(in Chinese). 李伟伟,张向军,卢世刚. Nb2O5·nH2O/C的制备与表征[J]. 化工进展,2010,29(12):2341-2345.
[12]	HE Guangyu,ZHAO Yitao,ZHANG Jianguo,et al.Preparation CoFe2O4/Grapheme Composites and Electrochemical Properties of Hydrothermal Method[J]. New Chem Mater,2013,41(3):60-62(in Chinese). 何光裕,赵宜涛,张建国,等. 水热法制备CoFe2O4/石墨烯复合物及其电化学性能[J]. 化工新型材料,2013,41(3):60-62.