CAJ | 학술논문

直接硼氢燃料电池(DBFC),是一种新型的高比能便携式电源,其电池电势(1.64 V)及理论比能量(9 300 Wh/kgNaBH_4)均高于直接甲醇燃料电池.为了实现BH4-的8电子完全氧化,分别以Ketjen炭黑、Vxc-72R炭黑为载体,采用溶胶-凝胶法制备了纳米级的Au/C催化剂,并采用分层装配的方法组装了单电池,考察了催化剂载体及载体处理对电池性能的影响.结果表明,溶胶-凝胶法是制备纳米级高分散Au/C催化剂的有效方法,Ketjen炭黑载体明显优于Vxc-72 R炭黑,载体经酸处理后可大大提高电池的性能.
직접붕경연료전지(DBFC),시일충신형적고비능편휴식전원,기전지전세(1.64 V)급이론비능량(9 300 Wh/kgNaBH_4)균고우직접갑순연료전지.위료실현BH4-적8전자완전양화,분별이Ketjen탄흑、Vxc-72R탄흑위재체,채용용효-응효법제비료납미급적Au/C최화제,병채용분층장배적방법조장료단전지,고찰료최화제재체급재체처리대전지성능적영향.결과표명,용효-응효법시제비납미급고분산Au/C최화제적유효방법,Ketjen탄흑재체명현우우Vxc-72 R탄흑,재체경산처리후가대대제고전지적성능.
Direct sodium borohydride fuel cell (DBFC) is a new type of portable power sources. Both of its cell potential(1.64 V) and power density(9.3 Wh/g NaBH_4)are higher than direct methanol fuel cell. In order to realize the electo-oxidation of BH_4~- in 8 e completely, Au was used as catalyst , Ketjen carbon and Vxc-72R carbon were used as catalyst carriers with pretreatment or not. The nano-size Au/C catalysts were prepared by the method of sol-gel. Single DBFCs were assembled using Au/C catalysts as anode to research the effect of catalyst carriers on their performances. The results indicate that sol-gel is a preferable method to prepare nano-size Au/C catalysts. Ketjen carbon is a better catalyst carrier than Vxc-72R carbon and the carriers which are dealt with acid can develop the cell performance greatly.