Spin-selected electron transfer in liquid–solid contact electrification DOI Creative Commons
Shiquan Lin, Laipan Zhu, Zhen Tang

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Sept. 5, 2022

Electron transfer has been proven the dominant charge carrier during contact electrification at liquid-solid interface. However, effect of electron spin in remains to be investigated. This study examines between different liquids and ferrimagnetic solids a magnetic field, focusing on contribution O2 molecules electrification. The findings reveal that fields promote O2-containing interfaces. Moreover, field-induced increases higher concentrations decreases elevated temperatures. results indicate spin-selected External can modulate conversion radical pairs liquid solid interfaces due Zeeman interaction, promoting transfer. A model for is further proposed based pair mechanism, which HO2 free unpaired electrons from are considered pairs. [HO2• •e-] affected by fields, rendering field-sensitive.

Language: Английский

Revealing Spin Magnetic Effect of Iron-Group Layered Double Hydroxides with Enhanced Oxygen Catalysis DOI
Liu Lin,

Ruiyun Xin,

Mengwei Yuan

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(2), P. 1431 - 1440

Published: Jan. 9, 2023

The oxygen evolution reaction (OER) is the bottleneck limiting process of water splitting. OER involves recombination from diamagnetic singlet state OH or H2O to paramagnetic triplet O2. spin conservation for oxygenated intermediates must play an important role in OER. However, dynamic mechanism magnetic field-induced polarization still its infancy. Herein, based on spin-coupling interaction iron group elements, three typical layered double hydroxides (LDHs) were constructed study relationship among field, polarization, and activity. Combining experimental theoretical studies, we revealed spin-magnetic effect LDHs enhancing process. There a positive correlation between saturation magnetization performance under different fields. NiCoFe-LDHs (NCFL) endows strongest activity (η10 = 230 mV) (Ms 44 emu mg–1) compared with that CoFe-LDHs (CFL, η10 372 mV, Ms 21 NiFe-LDHs (NFL, 246 29 mg–1). density functional theory calculations show Fe sites NCFL endow stronger OH, Raman spectroscopy further proves promotion formation O–O bond NCFL. Applying external due LDHs, enhancement amplitude also positively correlated magnetism catalyst. has about −34.8 mV T–1 NFL (−27.0 T–1) CFL (−16.7 T–1). overpotential only 206 condition 700 mT field. In conclusion, demonstrate underlying influence provide insights into catalysts intermediates. These would help understand design at spintronic level.

Language: Английский

Citations

75
Micro Eddy Current Facilitated by Screwed MoS2 Structure for Enhanced Hydrogen Evolution Reaction DOI

Meixia Su,

Wenda Zhou, Lin Liu

et al.

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(22)

Published: Feb. 24, 2022

Abstract Eddy current is a magnetic field effect generated in alternating (AMF), which could trigger continuous local heating, reducing the energy consumption without impairing life of catalyst or reactor. Unfortunately, investigation eddy on transition metal disulfides (TMDs) electrocatalysis still its infancy, and actual electrocatalytic applications has been impeded by multilayered structure traditional layered TMDs. Typically, step pyramid MoS 2 , with layer‐by‐layer stacking just like silicon steel plate transformer, showing an inevitable interlayer potential barrier will suppress generation cause low efficiency heating. In this work, designed screw can facilitate formation micro maximize utilization heating to boost activity, benefiting from eliminated barrier. This work provides new thinking for design field‐assisted reactions development advanced technology.

Language: Английский

Citations

71
Nanoscale Engineering of P‐Block Metal‐Based Catalysts Toward Industrial‐Scale Electrochemical Reduction of CO2 DOI
Pengfei Li, Fangqi Yang, Jing Li

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(34)

Published: July 27, 2023

Abstract The efficient conversion of CO 2 to value‐added products represents one the most attractive solutions mitigate climate change and tackle associated environmental issues. In particular, electrochemical reduction fuels chemicals has garnered tremendous interest over last decades. Among all from reduction, formic acid is considered economically vital products. P‐block metals (especially Bi, Sn, In, Pb) have been extensively investigated recognized as catalytic materials for electroreduction formate. Despite remarkable progress, future implementation this technology at industrial‐scale hinges on ability solve remaining roadblocks. review, current research status, challenges, prospects p‐block metal‐based catalysts primarily formate are comprehensively reviewed. rational design nanostructure engineering these metal optimization their performances discussed in detail. Subsequently, recent progress development state‐of‐the‐art operando characterization techniques together with advanced cells uncover intrinsic catalysis mechanism discussed. Lastly, a perspective directions including tackling critical challenges realize its early industrial presented.

Language: Английский

Citations

45
Field-assisted metal-air batteries: Recent progress, mechanisms, and challenges DOI
Wenliang Wang,

Tao Yu,

Ying Cheng

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109550 - 109550

Published: March 28, 2024

Language: Английский

Citations

20
Enhancement of electrocatalysis through magnetic field effects on mass transport DOI Creative Commons
Priscila Vensaus, Yunchang Liang, Jean‐Philippe Ansermet

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 3, 2024

Abstract Magnetic field effects on electrocatalysis have recently gained attention due to the substantial enhancement of oxygen evolution reaction (OER) ferromagnetic catalysts. When detecting an enhanced catalytic activity, effect magnetic fields mass transport must be assessed. In this study, we employ a specifically designed magneto-electrochemical system and non-magnetic electrodes quantify effects. Our findings reveal marginal in reactions with high reactant availability, such as OER, whereas boosts exceeding 50% are observed diffusion limited reactions, exemplified by reduction (ORR). Direct visualization quantification whirling motion ions under underscore importance Lorentz forces acting electrolyte ions, demonstrate that bubbles’ movement is secondary phenomenon. results advance fundamental understanding unveil new prospects for developing more efficient sustainable energy conversion technologies.

Language: Английский

Citations

19
Magnetic Field‐Assisted Water Splitting: Mechanism, Optimization Strategies, and Future Perspectives DOI

Shengyu Ma,

Qiang Fu, Jiecai Han

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(26)

Published: Feb. 15, 2024

Abstract Rationally designing of highly efficient electrocatalysts is critical to improving hydrogen production by water electrolysis. However, bottlenecks still require consideration when optimizing the intrinsic performance electrocatalysts. Applying appropriate external fields catalytic systems may effectively overcome such and enhance catalysts. Among various fields, magnetic field has received extensive attention owing its multifunctionality, non‐contact nature, non‐invasiveness, thereby requiring more research development. In this review, recent advances in field‐assisted electrolysis are systematically outlined. Firstly, diverse methods used for pre‐regulating catalysts under including optimized nucleation, induction heating, directed growth, discussed. It then explores effects on electrochemical processes, magnetothermal, magnetohydrodynamic, induced electric impact. Then, influences properties catalysts, as spin polarization reconstruction effects, addressed. Finally, a discussion potential perspectives field‐enhanced splitting, catalyst design, experimental precision, situ characterization, provided guide further research.

Language: Английский

Citations

17
Electrocatalytic microdevices based on transition metal dichalcogenides for hydrogen evolution DOI

C. R. Sun,

Longlu Wang, Yuxing Liu

et al.

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Chemical reactions and electronic properties are two vital aspects in the systematic study of electrocatalytic reactions.

Language: Английский

Citations

2
Recent progress of magnetic field application in lithium-based batteries DOI
Kang Shen, Xijun Xu, Yiping Tang

et al.

Nano Energy, Journal Year: 2021, Volume and Issue: 92, P. 106703 - 106703

Published: Nov. 9, 2021

Language: Английский

Citations

97
Strongly Correlated Electrons in Catalysis: Focus on Quantum Exchange DOI Creative Commons
Chiara Biz, Mauro Fianchini, José Gracia

et al.

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(22), P. 14249 - 14261

Published: Nov. 10, 2021

The understanding of quantum correlations within catalysts is an active and advanced research field, absolutely necessary when attempting to describe all the relevant electronic factors in catalysis. In our previous research, we came conclusion that most promising interactions improve optimization technological applications based on magnetic materials are spin exchange (QSEI), nonclassical orbital mechanisms considerably reduce Coulomb repulsion between electrons with same spin. QSEI can stabilize open-shell configurations unpaired compositions. These indirect spin-potentials significantly influence differentiate catalytic properties materials. As a rule thumb, reaction kinetics (thus activity) generally increase interatomic ferromagnetic (FM) dominant, while it sensibly decreases antiferromagnetic (AFM) prevail. patterns be easily spotted several reactions, including important biocatalytic reactions like photosynthesis, for instance. Moreover, add here concept excitation (QEXI) as crucial factor establish band gap key efficiently mediate electron transfer reactions. present Perspective, offer general conceptual overview, mainly recent importance strongly correlated their during events. We physical principles meanings behind way facilitates comprehensive catalysis from roots; explore issue via mathematical treatment well intuitive visual space/time diagrams expand potential readership beyond domain physicists chemists.

Language: Английский

Citations

92
Magnetic field assisted electrocatalytic oxygen evolution reaction of nickel-based materials DOI
Yuanyuan Zhang, Ping Guo, Siwei Li

et al.

Journal of Materials Chemistry A, Journal Year: 2021, Volume and Issue: 10(4), P. 1760 - 1767

Published: Dec. 14, 2021

The dominant role of the magnetoresistance effect caused by spin electron scattering in oxygen evolution reaction is unveiled through an situ tunable magnetic field-electrochemical testing system.

Language: Английский

Citations

86