Xiuwen Xu
China University of Petroleum
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Publication
Featured researches published by Xiuwen Xu.
Journal of Materials Chemistry | 2017
Wang Yang; Xiuwen Xu; Liqiang Hou; Xinlong Ma; Fan Yang; Ying Wang; Yongfeng Li
Exploiting highly active and stable counter electrodes (CEs) has been a persistent challenge for the practical application of dye-sensitized solar cells (DSSCs). Herein, we present an edge-enhanced modification to fabricate nitrogen doped holey graphene (NHG) by rationally employing N2 plasma treatment at the exposed edge sites of holey graphene. The as-synthesized NHG exhibits a highly conductive and unique holey scaffold with a large surface area, along with abundant edge-induced topological defects and nitrogen dopants. Benefiting from such unique features, NHG exhibits outstanding electrocatalytic activity and high electrochemical stability for the I−/I3− redox reaction. Furthermore, density functional theory calculations are performed to further elucidate the underlying mechanism behind this encouraging performance, in particular the effect of edge-induced topological defects. The DSSCs based on NHG CEs display a power conversion efficiency of 9.07%, which is even superior to that of Pt (8.19%). These results strongly indicate possibilities for the large-scale fabrication of low-cost and metal-free NHG materials for DSSCs with an I-complex redox couple.
Applied Catalysis B-environmental | 2017
Liqiang Zhang; Xing He; Xiuwen Xu; Chao Liu; Yongli Duan; Liqiang Hou; Qidong Zhou; Chi Ma; Xiaopeng Yang; Rui Liu; Fan Yang; Lishan Cui; Chunming Xu; Yongfeng Li
Journal of Power Sources | 2015
Wang Yang; Xinlong Ma; Xiuwen Xu; Yongfeng Li; S Infant Raj; Guoqing Ning; Aijun Wang; Sheng-Li Chen
Carbon | 2016
Chen Zhou; Sai Geng; Xiuwen Xu; Tihong Wang; Liqiang Zhang; Xiaojuan Tian; Fan Yang; Haitao Yang; Yongfeng Li
Carbon | 2016
Wang Yang; Xiuwen Xu; Zhao Li; Fan Yang; Liqiang Zhang; Yongfeng Li; Aijun Wang; Sheng-Li Chen
Nanoscale | 2016
Wang Yang; Xiuwen Xu; Yalun Gao; Zhao Li; Cuiyu Li; Wenping Wang; Yu Chen; Guoqing Ning; Liqiang Zhang; Fan Yang; Sheng-Li Chen; Aijun Wang; Jing Kong; Yongfeng Li
Electrochimica Acta | 2015
Wang Yang; Xiuwen Xu; Zhiqiang Tu; Zhao Li; Bo You; Yongfeng Li; S Infant Raj; Fan Yang; Liqiang Zhang; Sheng-Li Chen; Aijun Wang
Composites Science and Technology | 2017
Genghui Li; Xiaojuan Tian; Xiuwen Xu; Chen Zhou; Jiaye Wu; Qi Li; Liqiang Zhang; Fan Yang; Yongfeng Li
Electrochimica Acta | 2016
S Infant Raj; Xiuwen Xu; Wang Yang; Fan Yang; Liqiang Hou; Yongfeng Li
Journal of Power Sources | 2016
Zhao Li; Wang Yang; Xiuwen Xu; Yushu Tang; Ziwei Zeng; Fan Yang; Liqiang Zhang; Guoqing Ning; Chunming Xu; Yongfeng Li