局域电场耦合Cl−固定策略提升海水氧还原反应性能

doi:10.61558/2993-074X.3566

电化学（中英文） ›› 2025, Vol. 31 ›› Issue (9): 2504132. doi: 10.61558/2993-074X.3566

所属专题： “下一代二次电池”专题文章； single

局域电场耦合Cl⁻固定策略提升海水氧还原反应性能

刘育荣^a^,^#, 张淼^a^,^#, 于彦会^a^,^#, 刘亚琳^a^,^#, 李静^a, 史晓东^a, 康振烨^a, 吴道雄^a, 饶鹏^a^,^b^,^*(), 梁颖^a^,^*(), 田新龙^a^,^*()

^a海南大学，海洋科学与工程学院，海口，海南，570228，中国
^b南开大学，先进能源材料化学教育部重点实验室，天津，300071，中国

收稿日期:2025-04-14 修回日期:2025-05-21 接受日期:2025-05-28 发布日期:2025-06-03 出版日期:2025-09-28

Local Electric Fields Coupled with Cl⁻ Fixation Strategy for Improving Seawater Oxygen Reduction Reaction Performance

Yu-Rong Liu^a^,^#, Miao Zhang^a^,^#, Yan-Hui Yu^a^,^#, Ya-Lin Liu^a^,^#, Jing Li^a, Xiao-Dong Shi^a, Zhen-Ye Kang^a, Dao-Xiong Wu^a, Peng Rao^a^,^b^,^*(), Ying Liang^a^,^*(), Xin-Long Tian^a^,^*()

^aSchool of Marine Science and Engineering, Hainan University, Haikou 570228, Hainan, China
^bKey Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, China

Received:2025-04-14 Revised:2025-05-21 Accepted:2025-05-28 Online:2025-06-03 Published:2025-09-28
Contact: * Peng Rao, E-mail: raopeng@hainanu.edu.cn (P. Rao), Ying Liang, E-mail: liangying@hainanu.edu.cn (Y. Liang), Xin-Long Tian, E-mail: tianxl@hainanu.edu.cn (X. Tian)
About author:
^#Yu-Rong Liu, Miao Zhang, Yan-Hui Yu and Ya-Lin Liu contributed equally in this work.

1. JOE2504132-Supporting Information.pdf(1868KB)

摘要/Abstract

摘要：

开发适用于海水电解质的高性能氧还原反应（ORR）电催化剂是实现海水锌空气电池（SZABs）发展的关键。本文提出了一种在双金属单原子催化剂中构建局域电场耦合氯离子固定策略，所制备催化剂在海水电解质中表现出优异的ORR性能，其半波电位（E_1/2）高达0.868 V，组装的SZABs最大功率密度（P_max）达182 mW·cm⁻²，显著优于商用Pt/C催化剂（E_1/2: 0.846 V；P_max: 150 mW·cm⁻²）。原位表征和理论计算结果表明，铁位点比钴位点具有更强的氯离子吸附亲和力，能够在ORR过程中优先吸附海水中的氯离子，并通过同离子排斥效应构筑低氯离子浓度的局域微环境，从而抑制氯离子对钴活性中心的吸附和腐蚀，实现优异的催化稳定性。此外，铁-钴原子对之间的定向电荷迁移形成局域电场，优化了钴位点对含氧中间体的吸附能，进一步提升ORR催化活性。

关键词: 海水锌空气电池, 氧还原反应, 局域电场, 氯离子固定策略, 单原子催化剂

Abstract:

Development of robust electrocatalyst for oxygen reduction reaction (ORR) in a seawater electrolyte is the key to realize seawater electrolyte-based zinc-air batteries (SZABs). Herein, constructing a local electric field coupled with chloride ions (Cl^—) fixation strategy in dual single-atom catalysts (DSACs) was proposed, and the resultant catalyst delivered considerable ORR performance in a seawater electrolyte, with a high half-wave potential (E_1/2) of 0.868 V and a good maximum power density (Pmax) of 182 mW·cm⁻² in the assembled SZABs, much higher than those of the Pt/C catalyst (E_1/2: 0.846 V; Pmax: 150 mW·cm⁻²). The in-situ characterization and theoretical calculations revealed that the Fe sites have a higher Cl⁻ adsorption affinity than the Co sites, and preferentially adsorbs Cl⁻ in a seawater electrolyte during the ORR process, and thus constructs a low-concentration Cl⁻ local microenvironment through the common-ion exclusion effect, which prevents Cl⁻ adsorption and corrosion in the Co active centers, achieving impressive catalytic stability. In addition, the directional charge movement between Fe and Co atomic pairs establishes a local electric field, optimizing the adsorption energy of Co sites for oxygen-containing intermediates, and further improving the ORR activity.

Key words: Seawater zinc-air battery, Oxygen reduction reaction, Local electric field, Chloride ion fixation strategy, Single-atom catalyst

刘育荣, 张淼, 于彦会, 刘亚琳, 李静, 史晓东, 康振烨, 吴道雄, 饶鹏, 梁颖, 田新龙. 局域电场耦合Cl⁻固定策略提升海水氧还原反应性能[J]. 电化学（中英文）, 2025, 31(9): 2504132.

Yu-Rong Liu, Miao Zhang, Yan-Hui Yu, Ya-Lin Liu, Jing Li, Xiao-Dong Shi, Zhen-Ye Kang, Dao-Xiong Wu, Peng Rao, Ying Liang, Xin-Long Tian. Local Electric Fields Coupled with Cl⁻ Fixation Strategy for Improving Seawater Oxygen Reduction Reaction Performance[J]. Journal of Electrochemistry, 2025, 31(9): 2504132.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.3566

https://electrochem.xmu.edu.cn/CN/Y2025/V31/I9/2504132

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参考文献 31

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局域电场耦合Cl⁻固定策略提升海水氧还原反应性能

Local Electric Fields Coupled with Cl⁻ Fixation Strategy for Improving Seawater Oxygen Reduction Reaction Performance

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局域电场耦合Cl−固定策略提升海水氧还原反应性能

Local Electric Fields Coupled with Cl− Fixation Strategy for Improving Seawater Oxygen Reduction Reaction Performance

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局域电场耦合Cl⁻固定策略提升海水氧还原反应性能

Local Electric Fields Coupled with Cl⁻ Fixation Strategy for Improving Seawater Oxygen Reduction Reaction Performance