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Lv J, Lang Z, Fu J, Lan Q, Liu R, Zang H, Li Y, Ye D, Streb C. Molecular Iron Oxide Clusters Boost the Oxygen Reduction Reaction of Platinum Electrocatalysts at Near‐Neutral pH. Angew Chem Int Ed Engl 2022; 61:e202202650. [PMID: 35381106 PMCID: PMC9546390 DOI: 10.1002/anie.202202650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Indexed: 11/10/2022]
Abstract
The oxygen reduction reaction (ORR) is a key energy conversion process, which is critical for the efficient operation of fuel cells and metal–air batteries. Here, we report the significant enhancement of the ORR‐performance of commercial platinum‐on‐carbon electrocatalysts when operated in aqueous electrolyte solutions (pH 5.6), containing the polyoxoanion [Fe28(μ3‐O)8(L‐(−)‐tart)16(CH3COO)24]20−. Mechanistic studies provide initial insights into the performance‐improving role of the iron oxide cluster during ORR. Technological deployment of the system is demonstrated by incorporation into a direct formate microfluidic fuel cell (DFMFC), where major performance increases are observed when compared with reference electrolytes. The study provides the first examples of iron oxide clusters in electrochemical energy conversion and storage.
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Affiliation(s)
- Jia‐Qi Lv
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Zhong‐Ling Lang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University Changchun 130024 China
| | - Jia‐Qi Fu
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Qiao Lan
- Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University No. 174 Shazheng Street, Shapingba District Chongqing 400030 China
| | - Rongji Liu
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm (HIU) Helmholtzstr. 11 89081 Ulm Germany
| | - Hong‐Ying Zang
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Yang‐Guang Li
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Ding‐Ding Ye
- Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University No. 174 Shazheng Street, Shapingba District Chongqing 400030 China
| | - Carsten Streb
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm (HIU) Helmholtzstr. 11 89081 Ulm Germany
- Department of Chemistry, Johannes Gutenberg University Mainz Duesbergweg 10-14 55131 Mainz Germany
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Lv J, Lang Z, Fu J, Lan Q, Liu R, Zang H, Li Y, Ye D, Streb C. Molecular Iron Oxide Clusters Boost the Oxygen Reduction Reaction of Platinum Electrocatalysts at Near‐Neutral pH. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jia‐Qi Lv
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Zhong‐Ling Lang
- Centre for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education Northeast Normal University Changchun 130024 China
| | - Jia‐Qi Fu
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Qiao Lan
- Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University No. 174 Shazheng Street, Shapingba District Chongqing 400030 China
| | - Rongji Liu
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm (HIU) Helmholtzstr. 11 89081 Ulm Germany
| | - Hong‐Ying Zang
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Yang‐Guang Li
- Key Lab of Polyoxometalate Science of Ministry of Education Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China
| | - Ding‐Ding Ye
- Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University No. 174 Shazheng Street, Shapingba District Chongqing 400030 China
| | - Carsten Streb
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Helmholtz-Institute Ulm (HIU) Helmholtzstr. 11 89081 Ulm Germany
- Department of Chemistry, Johannes Gutenberg University Mainz Duesbergweg 10-14 55131 Mainz Germany
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Zheng XY, Du MH, Amiri M, Nyman M, Liu Q, Liu T, Kong XJ, Long LS, Zheng LS. Atomically Precise Lanthanide-Iron-Oxo Clusters Featuring the ϵ-Keggin Ion. Chemistry 2020; 26:1388-1395. [PMID: 31713263 DOI: 10.1002/chem.201904636] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 11/10/2022]
Abstract
Atomically precise molecular metal-oxo clusters provide ideal models to understand metal oxide surfaces, self-assembly, and form-function relationships. Devising strategies for synthesis and isolation of these molecular forms remains a challenge. Here, the synthesis of four Ln-Fe oxo clusters that feature the ϵ-{Fe13 } Keggin cluster in their core is reported. The {Fe13 } metal-oxo cluster motif is the building block of two important iron oxyhydroxyide phases in nature and technology, ferrihydrite (as the δ-isomer) and magnetite (the ϵ-isomer). The reported ϵ-{Fe13 } Keggin isomer as an isolated molecule provides the opportunity to study the formation of ferrihydrite and magnetite from this building unit. The four currently reported isostructural lanthanide-iron-oxo clusters are fully formulated [Y12 Fe33 (TEOA)12 (Hyp)6 (μ3 -OH)20 (μ4 -O)28 (H2 O)12 ](ClO4 )23 ⋅50 H2 O (1, Y12 Fe33 ), [Gd12 Fe33 (TEOA)12 (Hyp)6 (μ3 -OH)20 (μ4 -O)32 (H2 O)12 ](ClO4 )15 ⋅50 H2 O (2, Gd12 Fe33 ) and [Ln16 Fe29 (TEOA)12 (Hyp)6 (μ3 -OH)24 (μ4 -O)28 (H2 O)16 ](ClO4 )16 (NO3 )3 ⋅n H2 O (Ln=Y for 3, Y16 Fe29 , n=37 and Ln=Gd for 4, Gd16 Fe29 n=25; Hyp=trans-4-Hydroxyl-l-proline and TEOA=triethanolamine). The next metal layer surrounding the ϵ-{Fe13 } core within these clusters exhibits a similar arrangement as the magnetite lattice, and Fe and Ln can occupy the same positions. This provides the opportunity to construct a family of compounds and optimize magnetic exchange in these molecules through composition tuning. Small-angle X-ray scattering (SAXS) and high-resolution electrospray ionization mass spectrometry (HRESI-MS) show that these clusters are stable upon dissolution in both water and organic solvents, as a first step to performing further chemistry towards building magnetic arrays or investigating ferrihydrite and magnetite assembly from pre-nucleation clusters.
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Affiliation(s)
- Xiu-Ying Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China.,Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of, Hybrid Materials of Ministry of Education, Anhui University, Hefei, 230601, P. R. China
| | - Ming-Hao Du
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Mehran Amiri
- Department of Chemistry, Oregon State University, Corvallis, 97331, USA
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, 97331, USA
| | - Qiang Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Tao Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Xiang-Jian Kong
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - La-Sheng Long
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
| | - Lan-Sun Zheng
- Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P. R. China
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