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<p>Titanium-based materials are essential in semiconductors, fuel cells, and photocatalysis due to their high corrosion resistance and electrical conductivity. However, achieving a uniform and conductive platinum coating remains challenging. In this study, we developed Activator A, a surface treatment agent that enhances platinum electrodeposition on titanium sheets and felts. The process included sequential cleaning, acid etching, Activator A treatment, and electrodeposition in an acidic solution. Optimized conditions led to 95–97% platinum coverage, with contact resistance reduced to 4.41&#xa0;mΩ·cm<sup>2</sup> (felt) and 4.1&#xa0;mΩ·cm<sup>2</sup> (sheet). Compared to untreated samples, those treated with Activator A exhibited significantly improved electrical conductivity and corrosion resistance. These enhancements stem from the formation of a continuous, uniform platinum layer, eliminating the nonuniform and aggregated deposits typical in conventional processes. The findings highlight an efficient and scalable titanium surface activation strategy, providing valuable insights into optimizing titanium-based electrodes for electrochemical applications, including fuel cells and advanced energy storage systems.</p>

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Ultrathin High-Coverage Electrodeposition of Platinum on Titanium Substrates

  • 期刊论文

  • 发表日期：

    2025年5月23日

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  • Tianqi Sang,
  • Mingyue Ding,
  • Chunhui Shu,
  • Shangqi Gao,
  • Yufei Chen,
  • Zhenwei Wang

摘要

Titanium-based materials are essential in semiconductors, fuel cells, and photocatalysis due to their high corrosion resistance and electrical conductivity. However, achieving a uniform and conductive platinum coating remains challenging. In this study, we developed Activator A, a surface treatment agent that enhances platinum electrodeposition on titanium sheets and felts. The process included sequential cleaning, acid etching, Activator A treatment, and electrodeposition in an acidic solution. Optimized conditions led to 95–97% platinum coverage, with contact resistance reduced to 4.41 mΩ·cm2 (felt) and 4.1 mΩ·cm2 (sheet). Compared to untreated samples, those treated with Activator A exhibited significantly improved electrical conductivity and corrosion resistance. These enhancements stem from the formation of a continuous, uniform platinum layer, eliminating the nonuniform and aggregated deposits typical in conventional processes. The findings highlight an efficient and scalable titanium surface activation strategy, providing valuable insights into optimizing titanium-based electrodes for electrochemical applications, including fuel cells and advanced energy storage systems.