兰州大学机构库
Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn-Air Battery
Qian, Jinmei1; Zhang, Hong1; Li, Gaoyang2; Jia, Lei1; Peng, Xuebing1; Zhong, Chenglin3; Li, Feng2; Chao, Dongliang2; Gao, Daqiang1
2023-10-15
Online publication date2023-10
Source PublicationADVANCED FUNCTIONAL MATERIALS   Impact Factor & Quartile
ISSN1616-301X ; 1616-3028
EISSN1616-3028
page numbers10
AbstractMagnetic field-enhanced electrocatalytic activity has recently emerged as an effective strategy for electrocatalytic reactions. However, modulating the electrical behavior and spin ordering in real-time using magnetic field during the electrocatalytic process remains challenging. Herein, based on the coexistence of room-temperature ferromagnetic and magnetoresistance (MR) properties in La1-xSrxMnO3, it demonstrates that in addition to spin polarization, the negative MR effect contributes significantly to the enhancement of the oxygen evolution reaction (OER) owing to the considerable MR value (-7.32% for La0.8Sr0.2MnO3 at 1.0 T). Accordingly, a lessened OER overpotential of approximate to 120 mV (at 10 mA cm-2) and a reduced charge-transfer resistance are observed in La0.8Sr0.2MnO3 under a magnetic field of 1.0 T. Additionally, the power density of self-assembled Zn-air battery (ZnAB) based on La0.8Sr0.2MnO3 improves by 5.9 times under 1.0 T. Calculation results reveal that spin alignment can induce more unoccupied electronic states near the Fermi level, decrease the energy level of the Mn d-band center, and significantly reduce the O* formation barrier to enhance the OER activity of Sr-doped LaMnO3. Thus, the in situ regulation of charge and spin ordering by magnetic field offers a deeper understanding for designing high-performance ZnABs. The real-time regulation of charge and spin ordering is significant for designing high-efficiency electrocatalysts. An external direct current magnetic field to in situ enhance electrocatalytic reactions is crucial. The oxygen evolution reaction (OER) overpotential and intrinsic conductivity of La1-xSrxMnO3 can be tuned by applying 1.0 T magnetic field, which is attributed to the large negative magnetoresistance and optimized OER energy barrier.image
Keywordintrinsic charge negative magnetoresistance oxygen evolution reaction spin ordering
PublisherWILEY-V C H VERLAG GMBH
DOI10.1002/adfm.202305621
Indexed BySCIE
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:001082544500001
Original Document TypeArticle ; Early Access
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/568787
Collection兰州大学
Corresponding AuthorLi, Feng; Chao, Dongliang; Gao, Daqiang
Affiliation
1.Lanzhou Univ, Key Lab Magnetism & Magnet Mat MOE, Key Lab Special Funct Mat & Struct Design MOE, Lanzhou 730000, Peoples R China;
2.Fudan Univ, Sch Chem & Mat, Lab Adv Mat, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China;
3.Linyi Univ, Coll Chem & Chem Engn, Linyi 276005, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Qian, Jinmei,Zhang, Hong,Li, Gaoyang,et al. Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn-Air Battery[J]. ADVANCED FUNCTIONAL MATERIALS,2023.
APA Qian, Jinmei.,Zhang, Hong.,Li, Gaoyang.,Jia, Lei.,Peng, Xuebing.,...&Gao, Daqiang.(2023).Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn-Air Battery.ADVANCED FUNCTIONAL MATERIALS.
MLA Qian, Jinmei,et al."Magnetic Field Modulated Intrinsic Charge and Spin Ordering in Ferromagnetic Electrocatalysts for Rechargeable Zn-Air Battery".ADVANCED FUNCTIONAL MATERIALS (2023).
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