无机材料学报 ›› 2025, Vol. 40 ›› Issue (5): 489-496.DOI: 10.15541/jim20240459

• 研究论文 • 上一篇    下一篇

掺杂改性NaYTiO4增强固体氧化物燃料电池阳极抗硫中毒性能

渠吉发(), 王旭, 张维轩, 张康喆, 熊永恒, 谭文轶()   

  1. 南京工程学院 环境工程学院, 南京 211167
  • 收稿日期:2024-11-04 修回日期:2025-01-14 出版日期:2025-01-24 网络出版日期:2025-01-24
  • 通讯作者: 谭文轶, 教授. E-mail: twy@njit.edu.cn
  • 作者简介:渠吉发(1990-), 男, 博士. E-mail: qujifa@njit.edu.cn
  • 基金资助:
    国家自然科学基金(51678291);江苏省高等学校基础科学(自然科学)研究项目(21KJB530012);江苏省高等学校基础科学(自然科学)研究项目(23KJA610003)

Enhanced Sulfur-resistance for Solid Oxide Fuel Cells Anode via Doping Modification of NaYTiO4

QU Jifa(), WANG Xu, ZHANG Weixuan, ZHANG Kangzhe, XIONG Yongheng, TAN Wenyi()   

  1. School of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, China
  • Received:2024-11-04 Revised:2025-01-14 Published:2025-01-24 Online:2025-01-24
  • Contact: TAN Wenyi, professor. E-mail: twy@njit.edu.cn
  • About author:QU Jifa (1990-), male, PhD. E-mail: qujifa@njit.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51678291);Basic Science (Natural Science) Research in Higher Education in Jiangsu Province(21KJB530012);Basic Science (Natural Science) Research in Higher Education in Jiangsu Province(23KJA610003)

摘要:

固体氧化物燃料电池(SOFCs)是一种高效的能源转换装置, 但是传统镍基阳极面临严重的硫中毒问题。本研究采用固相法制备了层状钙钛矿氧化物NaYTiO4, 并通过异价离子掺杂进行改性。Ni成功进入钙钛矿层后形成NaYTi0.95Ni0.05O4, 掺杂的Ni不仅可以调控晶体的生长特性, 还可以在还原条件下原位析出。层状钙钛矿中二维分布的碱金属和极性结构带来了优异的化学吸水能力和良好的抗硫中毒能力, 材料的吸附氧比例可以借助Ni掺杂提升至64.5%, 表现出更加卓越的性能。所得材料作为SOFC阳极表现出良好的电催化活性, 以H2为燃料的SOFC在800 ℃的最大功率密度为183.8 mW·cm-2, H2燃料中添加0.1% H2S不仅没有出现明显的毒化现象, 最大功率密度还提升了25.2%, 并且SOFC能够在更易毒化的700 ℃稳定工作40 h, 说明掺杂改性层状钙钛矿氧化物可以显著提升阳极的抗硫中毒性能。

关键词: 层状钙钛矿氧化物, 掺杂, 固体氧化物燃料电池, 阳极, 抗硫中毒

Abstract:

Solid oxide fuel cells (SOFCs) are highly efficient energy conversion devices. However, the sulfur poison, which deteriorates traditional Ni-based anodes, restricts commercialization of the technology. Here, layered perovskite oxide NaYTiO4 was prepared using solid-state method and modified by partial substitution with different valence ions. Properties of NaYTiO4 before and after doping were systematically studied. Ni was doped into the perovskite layer and contributed to forming NaYTi0.95Ni0.05O4, which regulated growth characteristics of the crystal and in-situ exsoluted in reduction conditions. Two-dimensional distribution of alkali metals and polar structures in the material provides advantages, including excellent chemical water absorption capacity and good sulfur-resistance. With an increased chemisorbed oxygen species of 64.5%, Ni-doped material becomes more outstanding. SOFC with NaYTi0.95Ni0.05O4 as composite anode showed superior electrocatalytic activity. The peak power density reached 183.8 mW·cm-2 at 800 ℃ with H2 as fuel. Furthermore, the power density increased by 25.2% with an addition of 0.1% H2S in H2. The modified cell could work stably even at 700 ℃, a more toxic condition, for 40 h without significant poisoning effect. These results indicate that the modified layered perovskite oxides are excellent sulfur-resistance anodes.

Key words: layered perovskite oxide, doping, solid oxide fuel cell, anode, sulfur-resistance

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