Self-Assembly Synthesis of the MoS<sub>2</sub>/PtCo Alloy Counter Electrodes for High-Efficiency and Stable Low-Cost Dye-Sensitized Solar Cells

Zhi Zeng; Dongbo Wang; Jinzhong Wang; Shujie Jiao; Yuewu Huang; Sixiang Zhao; Bingke Zhang; Mengyu Ma; Shiyong Gao; Xingguo Feng; Liancheng Zhao

doi:10.3390/nano10091725

Nanomaterials (Aug 2020)

Self-Assembly Synthesis of the MoS<sub>2</sub>/PtCo Alloy Counter Electrodes for High-Efficiency and Stable Low-Cost Dye-Sensitized Solar Cells

Zhi Zeng,
Dongbo Wang,
Jinzhong Wang,
Shujie Jiao,
Yuewu Huang,
Sixiang Zhao,
Bingke Zhang,
Mengyu Ma,
Shiyong Gao,
Xingguo Feng,
Liancheng Zhao

Affiliations

Zhi Zeng: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Dongbo Wang: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Jinzhong Wang: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Shujie Jiao: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yuewu Huang: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Sixiang Zhao: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Bingke Zhang: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Mengyu Ma: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Shiyong Gao: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Xingguo Feng: National Key Laboratory of Science and Technology on Surface Engineering, Lanzhou Institute of Physics, Lanzhou 730000, China
Liancheng Zhao: Department of Optoelectronic Information Science, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

DOI: https://doi.org/10.3390/nano10091725
Journal volume & issue: Vol. 10, no. 9
p. 1725

Abstract

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In this work, MoS2 microspheres/PtCo-alloy nanoparticles (MoS2/PtCo-alloy NPs) were composited via a novel and facile process which MoS2 is functionalized by poly (N-vinyl-2-pyrrolidone) (PVP) and self-assembled with PtCo-alloy NPs. This new composite shows excellent electrocatalytic activity and great potential for dye-sensitized solar cells (DSSCs) as a counter electrode (CE) material. Benefiting from heterostructure and synergistic effects, the MoS2/PtCo-alloy NPs exhibit high electrocatalytic activity, low charge-transfer resistance and stability in the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) test. Meanwhile, a high power-conversion efficiency (PCE) of 8.46% is achieved in DSSCs with MoS2/PtCo-alloy NP CEs, which are comparable to traditional Pt CEs (8.45%). This novel composite provides a new high-performance, stable and cheap choice for CEs in DSSCs.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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