Reasonable construction of Fe3O4/Ni@N-RGO nanoflowers as highly efficient counter electrodes for dye-sensitized solar cells,Sustainable Energy & Fuels

当前位置： X-MOL 学术 › Sustain. Energy Fuels › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Reasonable construction of Fe3O4/Ni@N-RGO nanoflowers as highly efficient counter electrodes for dye-sensitized solar cells
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020-05-14 , DOI: 10.1039/d0se00494d
Haifeng Xu _{1,

2,

3,

4,

5} , Zhong Jin _{6,

7,

8,

9,

10}

Affiliation

The rational design of high-performance yet low-cost counter electrodes (CEs) with exceptional catalytic activity for the I⁻/I₃⁻ redox couple and excellent corrosion resistance is of great importance for dye-sensitized solar cells (DSSCs). Metal nickel-based CEs have super electrical conductivity for the oxidation of I⁻, but they lack the ability to restore I₃⁻, leading to relatively poor photoelectric conversion efficiency (PCE). Herein, we propose the design and development of a novel nanostructured CE material composed of hierarchical porous Fe₃O₄ nanoflowers decorated with Ni nanoparticles and wrapped by N-doped reduced graphene oxide nanosheets (Fe₃O₄/Ni@N-RGO). The as-prepared multi-component electrode material was applied as a CE for DSSCs, attaining high efficiency and excellent stability. The PCE of Fe₃O₄/Ni@N-RGO based DSSCs reaches 8.96%, which is superior to those based on Fe₃O₄ (7.92%) or Pt (7.87%). Moreover, the Fe₃O₄/Ni@N-RGO electrode also displays ultrahigh corrosion resistance under complicated working conditions. The advantages of the Fe₃O₄/Ni@N-RGO electrode material indicate its good potential for application in DSSCs as a high-performance and inexpensive CE material.

中文翻译：

合理构建Fe3O4 / Ni @ N-RGO纳米花作为染料敏化太阳能电池的高效对电极

高性能的合理设计又低成本的对置电极（CES）与用于予特殊催化活性^- / I ₃^-氧化还原电对和优异的耐腐蚀性是非常重要的用于染料敏化太阳能电池（DSSC）。金属镍基的CE有我的超级氧化导电性^-，但是他们没有恢复我的能力₃^{- ，}导致相对较差的光电转换效率（PCE）。本文中，我们提出了一种新型的纳米结构CE材料的设计和开发，该材料由分层多孔的Fe ₃ O ₄纳米花组成，该纳米花装饰有Ni纳米颗粒并被N掺杂的还原氧化石墨烯纳米片包裹（Fe₃ O₄ / Ni @ N-RGO）。所制备的多组分电极材料被用作DSSC的CE，获得了高效率和出色的稳定性。基于Fe₃ O₄ / Ni @ N-RGO的DSSC的PCE达到8.96％，优于基于Fe₃ O₄（7.92％）或Pt（7.87％）的那些。此外，Fe₃ O₄ / Ni @ N-RGO电极在复杂的工作条件下也显示出超高的耐腐蚀性。Fe₃ O₄ / Ni @ N-RGO电极材料的优点表明，它作为高性能和廉价的CE材料，在DSSC中具有良好的应用潜力。

更新日期：2020-06-30

点击分享查看原文

点击收藏

阅读更多本刊最新论文