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青岛大学白树行教授团队 Precision Chemistry | 通过Mo掺杂RuO₂突破酸性析氧反应中的活性与稳定性权衡

  • 2026-02-06 21:58:05
青岛大学白树行教授团队 Precision Chemistry | 通过Mo掺杂RuO₂突破酸性析氧反应中的活性与稳定性权衡

英文原题:Breaking the Activity-Stability Trade-off in Acidic OER via Mechanism Switching on Mo-Doped RuO2

作者:Jing Gao, Yuqi Jiang, Siyi Wang, Bo Han, Mingrui Guo*, Shuxing Bai*

背景介绍

传统化石燃料的过度开发和使用,导致全球能源危机与环境污染问题日益加剧,开发清洁、可持续的能源系统刻不容缓。氢气(H₂)因其能量密度高、燃烧产物零污染,被认为是极具潜力的下一代能源载体。在多种制氢技术中,利用可再生电力驱动的水(H₂O)电解是一种生产清洁氢燃料的理想途径。然而,目前大多数的析氧反应电催化剂在碱性水电解中表现优异的性能,但在质子交换膜水电解的强酸、高氧化性环境中容易发生严重溶解,稳定性大幅下降。因此,开发兼具高活性与高稳定性的酸性OER催化剂,仍是一项重大挑战。

文章亮点

近日,青岛大学白树行教授团队在Precision Chemistry上发表研究,通过钼掺杂RuO2实现了酸性OER中活性与稳定性之间的权衡突破该研究将钼(Mo)引入RuO2晶格,利用Mo的多种氧化态共存有效稳定了晶体结构,并通过电子调控抑制了Ru的氧化和溶解。同时,引入的Mo–O物种促进了反应动力学中的质子耦合电子转移过程。Mo的多氧化态与其亲氧特性之间的协同作用,显著提升了钌基催化剂在酸性OER中的综合性能。

图1. 合成图以及结构表征。Ru1Mo1-O/C的(a)合成示意图,(b)XRD,(c)TEM,(d)HRTEM,(e)HAADF-STEM和相应的EDS。

图2. 氧化还原性能和表面分析。(a)Ru1Mo1/C的热重分析和差示扫描量热法。Ru1Mo1-O/C、Ru-O/C的(b)H2-TPR曲线,(c)Ru3p XPS。(d)Ru1Mo1-O/C的Mo3d XPS。

图3. 酸性OER活性。Ru1Mo1-O/C、Ru-O/C、Mo-O/C和商业RuO2在0.5 M H2SO4中(a)LSV,(b)Tafel斜率。(c)Ru1Mo1-O/C和已报道的催化剂在0.5 M H2SO4中的𝜂 10和Tafel斜率比较。(d)Ru1Mo1-O/C在0.5 M H2SO4/H2O和H2SO4/D2O中的LSV,(e)Tafel斜率-电流密度曲线的对数。(f)Ru-O/C在在0.5 M H2SO4/H2O和H2SO4/D2O中的LSV。(g)Ru1Mo1-O/C、Ru-O/C在H2SO4/D2O中的Tafel斜率。(h) 0.5 M H2SO4中H/D同位素取代前后Ru1Mo1-O/C和Ru-O/C的Tafel斜率比较。

图4. 酸性OER稳定性。(a)Ru1Mo1-O/C、Ru-O/C 的稳定性。(b)Ru1Mo1-O/C、Ru-O/C、Mo-O/C和商业RuO2在0.5 M H2SO4的主要性能指标。(c) Ru1Mo1-O/C、Ru-O/C的失活速率比较。(d)反应后Ru1Mo1-O/C的XRD。反应前后Ru1Mo1-O/C的(e)Ru3p XPS,(f)Mo3d XPS。0.01 M(TMA)2SO4前后Ru1Mo1-O/C、Ru-O/C 的(g)LSV,(h)Tafel斜率。

总结/展望

在这项工作中,我们研究了一种通过Mo掺杂抑制Ru过氧化的高效催化剂。Mo的引入使RuO2在酸性OER中的反应机制从涉及晶格氧并导致结构破坏的LOM机制,转变为不涉及晶格氧损失的OPM机制,这一转变有效抑制了Ru的过度氧化,同时保持了高催化活性,显著提升了催化剂的结构稳定性和整体性能。优化后的Ru1Mo1-O/C催化剂在10 mA·cm-2的电流密度下过电位仅为167 mV,Tafel斜率为57.7 mV·dec-1,在0.5 M H2SO4溶液中可稳定运行超过255小时。这种高性能与低成本兼顾的特点,使得钌基催化剂——尤其是我们提出的高性能Ru1Mo1-O/C——成为一种极具前景且经济可行的替代品,有望在未来大规模、低成本酸性电解水中取代传统的铱基催化剂。

通讯作者信息

白树行 教授

白树行,男,博士,青岛大学教授,博士生导师。研究方向:贵金属催化剂设计合成及其在可持续能源转化中的应用,在贵金属结构设计、晶相与界面控制,及其小分子催化转化领域展开系统研究。在国际学术期刊发表论文50余篇,以第一或通讯作者在J. Am. Chem. Soc.(2篇)、Nat. Commun.、Adv. Mater.(3篇)、Nano Lett.、ACS Catal.(2篇)、Nano Energy(2篇)、J. Catal.、Small Methods等期刊发表论文30余篇,其中高被引论文3篇,封面论文2篇;主持国家自然科学基金面上项目(2025年立项)、青年基金(2021年立项)和山东省自然科学基金青年基金(2021年立项)等多个项目。

郭铭瑞 副教授

郭铭瑞,女,博士,青岛大学副教授,硕士生导师。中共党员,研究方向:1)电化学水分解催化剂的制备与性能研究;2)储能材料的开发与应用;3)有机物电氧化催化剂制备及性能研究;主持国家自然科学青年基金(2021年立项)、山东省自然科学基金(2021年立项)、横向课题(2022年立项)等多个项目。

扫描二维码阅读英文原文

Precis. Chem. 2025, ASAP

Publication Date: January 7, 2026

https://doi.org/10.1021/prechem.5c00276

© 2025 The Authors. Co-published by University of Science and Technology of China and American Chemical Society

关于 Precision Chemistry

Precision Chemistry由中国科学院院士、中国科学技术大学杨金龙教授担任主编,美国加州大学洛杉矶分校的段镶锋教授担任执行主编,日本理化学研究所Kenichiro Itami教授和德国明斯特大学Harald Fuchs教授担任副主编,以及中国科学技术大学钟文婉教授担任专题编辑。编委团队包括来自中国、美国、瑞士、法国、德国、日本、澳大利亚等国家的43位顶尖学者,以及26位来自8个国家的优秀青年学者组成的青年编委团队。

Precision Chemistry目前已被ESCI,Scopus,PMC, DOAJ,CAS 等数据库收录,IF 6.2,JCR Q1

所有的稿件都将经过严格的、公平的、高效的同行评审,我们致力于以期刊的文章质量赢得读者的信任。如有任何疑问,请发送电子邮件至eic@pc.acs.org

杨金龙院士

中国科学技术大学

Precision Chemistry 将发表化学及交叉领域中以精准化为导向的高水平的具有重要意义和吸引广泛兴趣的原创研究,包括但不限于计算、设计、合成、表征、应用等方面的前沿性研究成果,将秉承尊重科学、兼容并包的态度,为全球科研人员提供高质量的、开放的学术交流平台,服务于广大的化学和科学界。期刊将发表原创论文、快报、综述、展望、以及多样化的短篇社评。

2-Year Impact Factor

CiteScore

Time to First Peer Review Decision

6.2

4.4

25

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  1. CONNECT:[ UseTime:0.000448s ] mysql:host=127.0.0.1;port=3306;dbname=g460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000778s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001766s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.011649s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000513s ]
  6. SELECT * FROM `set` [ RunTime:0.000193s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000564s ]
  8. SELECT * FROM `article` WHERE `id` = 470738 LIMIT 1 [ RunTime:0.010094s ]
  9. UPDATE `article` SET `lasttime` = 1770653218 WHERE `id` = 470738 [ RunTime:0.010733s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.008562s ]
  11. SELECT * FROM `article` WHERE `id` < 470738 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001505s ]
  12. SELECT * FROM `article` WHERE `id` > 470738 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000507s ]
  13. SELECT * FROM `article` WHERE `id` < 470738 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.010658s ]
  14. SELECT * FROM `article` WHERE `id` < 470738 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008121s ]
  15. SELECT * FROM `article` WHERE `id` < 470738 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002494s ]
0.154905s