近日，北京理工大学王博团队报道了基于开放框架的Brønsted酸–Lewis碱界面可促进燃料电池中的质子转移。2026年9月10日出版的《科学》发表了这项成果。

质子交换膜燃料电池催化剂层内有限的质子传导率会引发严重的欧姆极化，并限制其在高氢-电转化效率下的功率输出。

研究组证明，通过将有机开放框架与Nafion复合来构建Brønsted酸–Lewis碱界面，可促进质子转移。这些受限界面可介导低能垒中继通路，破坏氢键以加速水网络重组，促进连续质子转移，并在局部富集质子。

与Nafion相比，这些复合物的质子自扩散系数提高了一个数量级，质子传导率提高了6.5倍，活化能降低了55%。当与商业铂碳催化剂结合使用时，其额定功率输出较基线提高四倍，在相似条件下优于采用先进催化剂的代表性最先进膜电极组件。

附：英文原文

Title: Open framework–based Brnsted acid–Lewis base interfaces boost proton transfer in the fuel cells

Author: Qianli Ma (马千里), Jiarui Yang (杨嘉睿), Jie Li (李婕), Zihan Zhao (赵子涵), Feiyu Yue (岳飞宇), Jianwei Yang (杨建伟), Shuang Zhao (赵爽), Wenhan Sheng (盛文涵), Tang Wang (王堂)

Issue&Volume: 2026-09-10

Abstract: Limited proton conductivity within the catalyst layer induces severe ohmic polarizations and constrains power output at high hydrogen-to-electricity efficiencies in proton exchange membrane fuel cells. We demonstrate that proton transfer can be boosted by constructing Brnsted acid–Lewis base interfaces through integrating organic open frameworks with Nafion. These confined interfaces mediate low-barrier relay pathways, disrupt hydrogen bonding to expedite water network reorganization, facilitate consecutive proton transfer, and enrich protons locally. Compared with Nafion, the complexes exhibit an order-of-magnitude increase in proton self-diffusion coefficient, a 6.5-fold rise in proton conductivity, and a 55% reduction in activation energy. When integrated with commercial platinum on carbon, they deliver a fourfold increase in rated power output relative to the baseline, outperforming representative state-of-the-art membrane electrode assemblies with advanced catalysts under similar conditions.

DOI: 10.1126/science.adp3564

Source: https://www.science.org/doi/10.1126/science.adp3564