通过正交实验研究了影响由络合沉淀法制备的Al取代α_Ni(OH) 2 电化学性能的几个主要因素 .其最佳的合成条件为 :氨水浓度 0 .5mol·L- 1,Al取代含量 15mol% ,pH =11.0 ,在最佳合成条件下制备的样品的最大放电比容量为 30 4mAh·g- 1
陈惠
,
王建明
,
潘滔
,
肖慧明
,
张鉴清
. 络合沉淀法制备Al取代α-Ni(OH)_2 的正交实验研究[J]. 电化学, 2002
, 8(1)
: 54
-59
.
DOI: 10.61558/2993-074X.3279
Al_substituted α_Ni(OH) 2 was prepared by a complexation_precipitation method and characterized by XRD.The electrochemical performance was tested by the charge_discharge method.The experimental results of orthogonal test showed that the effect order of some key preparative conditions on the electrochemical performance of Al_substituted α_Ni(OH) 2 was the concentration of aqueous ammonia,the content of aluminum and pH value.The optimum prepareative conditions for obtaining the sample with maximum specific discharge capacity(304 mAh·g -1 ) were 0.5 mol·L -1 aqueous ammonia,15 mol% Al content and pH 11.0.
[1] BodeH ,DehmeltK ,WitteJ .Zurkenntnisdernickelhydroxidelektrode...I .Uberdasnickel(II)_hydroxidhy drat[J].Electrochim.Acta,1996,11:1079.
[2] BarnardR ,RandellCF ,TyeFF .Studiesconcerningchargednickelhydroxideelectrodes.I .Measurementofreversiblepotentials[J].J .Appl.Electrochem.,1980,10:109.
[3] KamathPVishnu,DixitMridula,IndiraL .Stabilizedα_Ni(OH)2 aselectrodematerialforalkalinesecondarcells[J].J .Electrochem.Soc.,1994,141(11):2956.
[4] LengYong_jun,LiuBing,LiaoXiao_zhen,etal.Preparation,structureandelectrochemicalperformanceofalu minum_substitutednickelhydroxidePartIElectrochemical performance[J].ChineseJournalofPowerSources,2000,24(2):77.
[5] XuYan_hui,ChenChangpin.Preliminarystudyonactivematerialα_Ni(OH)2[J].ChineseJournalofPowerSources,1999,23(4):209.
[6] Demourgues_GuerlouLiliane,DelmasClaude.Effectofironontheelectrochemicalpropertiesofthenickelhy droxideelectrode[J].J.Electrochem.Soc.,1994,41(13):713.
[7] LengYong_jun,MaZi_feng,ZhangCun_gen,etal.Preparation,structureandelectrochemicalperformanceofiron_substitutednickelhydroxidesPartIElectrochemicalperformance[J].ChineseJournalofPowerSources,1999,23(6):322.
[8] FaureC ,DelmasC ,FouasierM ,etal.Preparationandcharacterizationofcolbalt_substitutedα_nickelhydroxidestableinKOHmediumPart1.α’_Hydroxidewithanorderedpacking[J].J.PowerSources,1991,35:249.
[9] Guerlou_DemorguesL ,DenageC ,DelmasC .Newmanganese_substitutednickelhydroxidesPart1.Crystalchemistryandphysicalcharacterization[J].J.PowerSources,1994,52:269.
[10] DixitMridula,KamathPVishnu,GopalakrishnanJ .Zinc_substituteda_nickelhydroxideasanelectrodemate rialforalkalinesecondarycells[J].J .Electrochem.Soc.,1999,146(1):79.
[11] LengYong_jun.Preparation,structureandelectrochemicalperformanceofactivematerialsofnickelelectrode[D].Zhejiang:ZhejiangUniversity,1998.
[12] LiRong,YanDa_zhou.PhysicalandelectrochemicalcharacteristicsofNi(OH)2[J].BatteryBimonthly(inchinese),1998,28(2):73.
[13] SugimotoAkiko,IshidaShintaro,HanawaKenzo.PreparationandcharacterizationofNi/Al_layereddoublehydroxide[J].J.Electrochem.Soc.,1999.146(4):1251
