电解锰用钛基修饰阳极TiSnO2MnO2的制备与性能研究.pdf

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1、第34卷第3期Vo1．34№3矿冶工程2014年o6月nININGANDMETALLURGICALENGINEERINGJune2014电解锰用钛基修饰阳极Ti／SnO2／MnO2的制备与性能研杨文翠，彭文杰，李新海，郭华军，王志兴，胡启阳(中南大学冶金科学与工程学院，湖南长沙410083)摘要：采用Ti板作为基体，采用涂敷及热分解方法在其表面制备Sn0中间层和MnO催化涂层，通过测试极化曲线分析其催化活性。采用活化后的Ti／SnO／MnO：板作为电解锰的阳极板，以增大电流效率和降低能耗。结果表明Ti／SnO／MnO作为电解锰阳极板时的阳极电位和槽电压相对于铅板作为电解锰阳极板的阳极电位和槽电

2、压都有明显的降低；阴极板上得到光滑的银白色锰层，阳极溶液中得到粉末状MnO，可以用于制备锰酸锂；阴极电流效率从79．92％增大到88．80％，高于工业生产中的阴极电流效率，同时单位能耗从6946kW·h／t降低到6079kW·h／t，低于电解锰厂的单位能耗。Ti／SnO／MnO：钛基修饰阳极是一种具有较好应用潜力的同槽电解锰和二氧化锰的阳极板。关键词：阳极；槽电压；极化曲线；阳极电位；电流效率；单位能耗中图分类号：TM912．9文献标识码：Adoi：10．3969／j．issn．0253—6099．2014．03．024文章编号：0253—6099(2014)03—0090—04Prepara

3、tionofTitanium-substrateModifiedTi／SnO2／MnO2AnodePlateforElectrolyticManganeseMetalandItsPerformanceStudyYANGWen—cui，PENGWen-jie，LIXin-hai，GUOHua-jun，WANGZhi—xing，HUQi—yang(SchoolofMetallurgicalScienceandEngineering，CentralSouthUniversity，Changsha410083，Hunan，China)Abstract：WithTiplateassubstrate，Sn

4、O2interlayerandMnO2catalyticlayerwerepreparedonitssurfacebyusingcoatingandthermaldecompositionmethod，andthecatalyticactivityoftheactivatedTi／SnO2／MnO2electrodewasalsoanalyzedwiththepolarizationcurve．ThentheactivatedTi／SnO2／MnO2platewastakenasanodeplateforelectrolyticmanganeseforincreasingcurrenteffi

5、ciencyandreducingenergyconsumptioninthetest．ResultsindicatedthattherewasaremarkabledecreaseintheanodepotentialandcellvoltagewithTi／SnO2／MnO2insteadofleadplateasanodeplateforelectrolyticmanganese．Furthermore，therewasalayerofsmoothsilverMncoveringonthecathodeplateandMnO2powderobtainedintheanodesolutio

6、nwhichcanbeusedforpreparationoflithiummanganate．Thecathodiccurrentefficiencyalsoincreasedfrom79．92％to88．8％，higherthanthatinindustrialproduction，whileper—unitenergyconsumptionreducedfrom6946kW·h／tto6079kW·h／t，lowerthanthatinelectrolyticmanganeseplants．Itisconcludedthatthetitanium—substratemodifiedTi／

7、SnO2／MnO2anodeplatehasagoodapplicationprospectformanganeseandmanganesedioxidebeingelectrolyzedtogetherinthesamecel1．Keywords：anode；cellvoltage；polarizationcurve；anodicpotentials；curenteficiency；per-un