B-Doped Graphene as an Electrochemically Superior Metal-Free Cathode Material As Compared to Pt over a Co(II)/Co(III) Electrolyte for Dye-Sensitized Solar Cell

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• 作者：Sun-Min Jung ; In Taek Choi ; Kimin Lim ; Jaejung Ko ; Jae Cheon Kim ; Jae-Joon Lee ; Myung Jong Ju ; Hwan Kyu Kim ; Jong-Beom Baek
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：June 10, 2014
• 年：2014
• 卷：26
• 期：11
• 页码：3586-3591
• 全文大小：393K
• 年卷期：v.26,no.11(June 10, 2014)
• ISSN：1520-5002

文摘

We report that B-doped graphene (BG) is prepared and tested as a counter electrode (CE) in dye-sensitized solar cells (DSSCs) in conjunction with Co(bpy)₃^2+/3+ redox couple. The BG CE has a lower charge-transfer resistance and much higher electrochemical stability than those of Pt CE. As a result, the DSSC fabricated with BG CE exhibits superior power conversion efficiency to that of DSSC with Pt CE, suggesting potential to replace expensive Pt CE in DSSCs.