催化学报 ›› 2026, Vol. 87: 230-242.DOI: 10.1016/S1872-2067(26)65108-X

• 论文 • 上一篇    下一篇

WN增强金属-N-C载体平台构筑燃料电池用高耐久性Pt基氧还原催化剂

李柯a, 罗燚b,*(), 蔡晨宁a, 郑泽民c, 余罡c, 胡建强b, 陈胜利a,*()   

  1. a 武汉大学化学与分子科学学院, 能源电化学基础实验室, 湖北武汉 430000
    b 中国人民解放军空军勤务学院, 航空军需与燃料系, 江苏徐州 221000
    c 珞氢新材料科技有限公司, 广东佛山 528000
  • 收稿日期:2025-10-24 接受日期:2025-12-29 出版日期:2026-08-18 发布日期:2026-06-24
  • 通讯作者: *电子信箱: slchen@whu.edu.cn (陈胜利),
    nudtluoyi@163.com (罗燚).
  • 基金资助:
    国家自然科学基金(22332004);江苏省自然科学基金青年基金(BK20250323)

WN enhanced metal-N-C platform for ultra-stable Pt oxygen reduction electrocatalyst in fuel cell

Ke Lia, Yi Luob,*(), Chenning Caia, Zemin Zhengc, Gang Yuc, Jianqiang Hub, Shengli Chena,*()   

  1. a College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430000, Hubei, China
    b Department of Aviation Oil and Material, Air Force Logistics Academy, Xuzhou 221000, Jiangsu, China
    c Luoqing New Materials Company, Foshan 528000, Guangdong, China
  • Received:2025-10-24 Accepted:2025-12-29 Online:2026-08-18 Published:2026-06-24
  • Supported by:
    National Natural Science Foundation of China(22332004);Jiangsu Provincial Natural Science Foundation-Youth Fund(BK20250323)

摘要:

质子交换膜燃料电池(PEMFC)功率密度高, 产物只有水, 被视为最理想的能源动力系统之一. 然而, 其阴极氧还原(ORR)反应动力学缓慢, 需要高活性铂(Pt)基催化剂以维持高能量输出, 成本居高难下. 同时, 催化剂在实际运行中易因碳载体腐蚀、Pt纳米颗粒团聚及金属溶解等问题而性能迅速衰减. PEMFC的应用长期面临ORR催化剂在活性、耐久性与成本之间难以兼顾的“不可能三角”困境. 针对上述挑战, 本文创新提出“氮化钨增强金属-氮-碳(WN-M-N-C) ”载体策略, 通过引入亚纳米WN与原子级分散的金属-N位点协同作用, 同步优化Pt的电子结构与催化界面的稳定性.

关键词: 氧还原反应, 耐久性, 活性, 氮化钨, 金属-氮-碳, 质子交换膜燃料电池

Abstract:

The widespread deployment of proton exchange membrane fuel cells is hindered by the “catalysis trilemma” of the oxygen reduction reaction (ORR), which demands simultaneous high activity, exceptional durability and low cost. To overcome this longstanding bottleneck, we propose a universal tungsten nitride (WN) enhanced metal-N-C platform, where WN synergizes with metal-Nx sites to create a robust and electronically modulated support for Pt catalysts. This dual-anchoring and synergistic-catalyzing architecture not only effectively suppresses Pt nanoparticle migration and dissolution but also optimizes Pt activity, thereby accelerating ORR kinetics and enhancing structural integrity. As a prototypical example, the Pt/WN-Fe-N-C catalyst delivers a remarkable peak power density of 1.85 W/cm2 at an ultralow cathode Pt loading of 0.05 mg-Pt/cm2 and retains 91.1% peak power density after 90000 accelerated durability test cycles with 4 mV voltage loss at 0.80 A/cm2-significantly exceeding the U.S. DOE 2030 targets. This work establishes a generalizable materials design strategy to break the activity-stability-cost trade-off in fuel cell catalysis.

Key words: Oxygen reduction reaction, Durability, Activity, Tungsten nitride, Metal-N-C, Proton exchange membrane fuel cells