无机化学学报
無機化學學報
무궤화학학보
JOURNAL OF INORGANIC CHEMISTRY
2010年
1期
132-137
,共6页
陈建军%钟理%Chuang Karl
陳建軍%鐘理%Chuang Karl
진건군%종리%Chuang Karl
聚苯并咪唑(PBI)%燃料电池%乙烷%膜电极组装(MEA)
聚苯併咪唑(PBI)%燃料電池%乙烷%膜電極組裝(MEA)
취분병미서(PBI)%연료전지%을완%막전겁조장(MEA)
polybenzimidazole(PBl)%fuel cell%ethane%membrane-electrode-assembly (MEA)
研究了以乙烷作为燃料、掺杂了H_3PO_4 的聚苯并咪唑(PBD材料作为质子传导膜、Pt/C作为电极催化剂构成的燃料电池电化学性能.采用溶液铸造法制备了PBI/H_3PO_4 质子传导膜,考察了在PBI膜中H_3PO_4 的掺杂量与时间的关系及乙烷气体在增湿和不增湿条件下PBI/H_3PO_4 燃料电池的电化学性能;探讨了电池的反应机理及不同操作温度对电池性能的影响.结果表明,PBI膜H_3PO_4 适宜的掺杂时间为8 h,电解质中掺杂600mol%H_3PO_4;乙烷气体增湿后,电池性能变好;操作温度提高,电化学反应速率加快,电池的输出电流与功率密度增加.结构为C_2H_6,(Pt/C阳极)/PBI/H_3PO_4 膜/(Pt/C阴极),O_2的单电池,在200℃和0.1 Mpa、乙烷气体的湿度从0增加到0.02kg H_2O/kg乙烷时.电池的最大输出电流密度从1.5 mA·cm~(-2)增加到34 mA·cm~(-2),最大功率密度从0.33mW·cm~(-2)增加到5.5 mW·cm~(-2).
研究瞭以乙烷作為燃料、摻雜瞭H_3PO_4 的聚苯併咪唑(PBD材料作為質子傳導膜、Pt/C作為電極催化劑構成的燃料電池電化學性能.採用溶液鑄造法製備瞭PBI/H_3PO_4 質子傳導膜,攷察瞭在PBI膜中H_3PO_4 的摻雜量與時間的關繫及乙烷氣體在增濕和不增濕條件下PBI/H_3PO_4 燃料電池的電化學性能;探討瞭電池的反應機理及不同操作溫度對電池性能的影響.結果錶明,PBI膜H_3PO_4 適宜的摻雜時間為8 h,電解質中摻雜600mol%H_3PO_4;乙烷氣體增濕後,電池性能變好;操作溫度提高,電化學反應速率加快,電池的輸齣電流與功率密度增加.結構為C_2H_6,(Pt/C暘極)/PBI/H_3PO_4 膜/(Pt/C陰極),O_2的單電池,在200℃和0.1 Mpa、乙烷氣體的濕度從0增加到0.02kg H_2O/kg乙烷時.電池的最大輸齣電流密度從1.5 mA·cm~(-2)增加到34 mA·cm~(-2),最大功率密度從0.33mW·cm~(-2)增加到5.5 mW·cm~(-2).
연구료이을완작위연료、참잡료H_3PO_4 적취분병미서(PBD재료작위질자전도막、Pt/C작위전겁최화제구성적연료전지전화학성능.채용용액주조법제비료PBI/H_3PO_4 질자전도막,고찰료재PBI막중H_3PO_4 적참잡량여시간적관계급을완기체재증습화불증습조건하PBI/H_3PO_4 연료전지적전화학성능;탐토료전지적반응궤리급불동조작온도대전지성능적영향.결과표명,PBI막H_3PO_4 괄의적참잡시간위8 h,전해질중참잡600mol%H_3PO_4;을완기체증습후,전지성능변호;조작온도제고,전화학반응속솔가쾌,전지적수출전류여공솔밀도증가.결구위C_2H_6,(Pt/C양겁)/PBI/H_3PO_4 막/(Pt/C음겁),O_2적단전지,재200℃화0.1 Mpa、을완기체적습도종0증가도0.02kg H_2O/kg을완시.전지적최대수출전류밀도종1.5 mA·cm~(-2)증가도34 mA·cm~(-2),최대공솔밀도종0.33mW·cm~(-2)증가도5.5 mW·cm~(-2).
Performance of fuel cell using ethane as fuel,polybenzimidazole (PBI) membrane doping H_3PO_4 as proton-conducting membrane,Pt/C as electrode catalysts was investigated.Proton conducting membrane of PBI/ H_3PO_4 was prepared by solution casting method.Relation of H_3PO_4 doped amount in PBI membrane and doped time was observed.Electrochemical performances of PBI/H_3PO_4 proton-conducting membrane fuel cell were compared under the conditions with ethane humidification or without ethane humidification.Reaction mechanism of fuel cell and effect of different operation temperatures on fuel cell performance were explored.The experimental results showed that H_3PO_4 doped amount in PBI membrane and doped time were 600mo1% H_3PO_4 and 8h,respectively.Cell performance became better after ethane humidification.Output current and power densities of cell increased with increasing operational temperature.This is attributed to improved reaction rate of electrodes.The maximum current and power densities of 1.5mA·cm~(-2) and 0.33 mW·cm~(-2) at ethane humidity of O,and of 34 mA·cm~(-2) and 5.5 mW·cm~(-2) at ethane humidity of 0.02 kg H_2 O/kg ethane,for the single fuel cell having the configuration of C_2H_6,(Pt/C anode)/PBI/H_3PO_4 membrane/(Pt/C cathode),O_2were obtained at 200℃and 0.1 MPa,respectively.
