Journal
JOURNAL OF POWER SOURCES
Volume 263, Issue -, Pages 246-251Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.03.118
Keywords
Phosphorus-doped graphene; Counter electrode; Electrocatalytic activity; Dye-sensitized solar cells
Funding
- National Natural Science Foundation of China [51372033, 51202022]
- Program for New Century Excellent Talents in University [NCET-10-0291]
- 111 Project [B13042]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120185120011]
- International Science and Technology Cooperation Program of China [2012DFA51430]
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In this study, phosphorus (P) atoms were doped into reduced graphene oxide (rGO) with two bonding states of P-C and P-O by using annealing treatment For the first time, the P-doped rGO (PrGO) was employed as the counter electrode (CE) for dye-sensitized solar cell (DSSC). The electrochemical studies reveal that the P doping can effectively enhance the electrocatalytic activity of rGO, and P-C structures have higher electrocatalytic activity than P-O ones for I-/I-3(-) redox reaction. More significantly, PrGO shows comparable electrocatalytic ability to Pt as CEs. It therefore seems promising for PrGO to be widely used in metal-free DSSCs with low cost and high efficiency. (C) 2014 Elsevier B.V. All rights reserved.
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