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in situ/operando characterization techniques for electrochemical CO_(2)reduction

Science China Chemistry 2023年第2期66卷 315-323页

作者： Xinning Song Liang Xu Xiaofu Sun Buxing Han Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China College of Science China Agricultural UniversityBeijing100193China School of Chemical Sciences University of Chinese Academy of SciencesBeijing100049China Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai200062China

Utilizing CO_(2)as a carbon feedstock for producing fuels and useful chemicals is attractive due to the advantages of being abundant,nontoxic,and *** CO_(2)reduction(CO_(2)RR)provides an avenue to close the anthropogenic carbon ***,the reaction process of multi-electronic products of CO_(2)RR is quite *** is hard to yield a target product with high selectivity,high current density,low overpotential,and good stability *** recent years,in situ/operando characterization techniques have played important roles in the catalysis field via establishing the structure-reactivity/selectivity relationships of catalysts and thereby obtaining information about *** a result,it is necessary to apply in situ/operando characterization technologies to clarify the reaction pathway of CO_(2)*** this mini-review,we discuss recent progress on the in situ/operando characterizations for electrochemical CO_(2)RR,including microscopies,infrared spectroscopy,Raman spectroscopy,X-ray photoelectron spectroscopy,and X-ray absorption fine ***,the capabilities of these in situ/operando characterizations and the remaining challenges are also discussed.

关键词： carbon dioxide electrocatalysis in situ/operando characterization catalyst design reaction mechanism

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Application of in situ/operando characterization techniques in heterostructure catalysts toward water electrolysis

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Nano Research 2023年第2期16卷 1984-1991页

作者： Wanyi Liao Shanshan Wang Hong Su Yan Zhang Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

The key to achieving the breakthrough of hydrogen energy from marginal energy sources in large scale applications lies in the development and design of efficient electrocatalysts for the electrochemical oxidation and reduction of *** unique heterostructure endows the catalyst with a mass of functional interfaces that are decisive for the enhancement of catalyst activity,stability,and reaction *** some cutting-edge reviews have focused on the synthesis strategies,constitution,and applications of heterostructure catalysts,the field still lacks a detailed discussion of the actual reaction processes occurring at the interface,which is detrimental to the understanding of the true catalytic *** on advanced in situ/operando characterization techniques to understand the working mechanism of heterostructure catalysts is essential for rational design of advanced *** this review,we first present the advantages of heterostructure catalysts applied to electrolyzing ***,the application of in situ/operando techniques in probing three aspects of heterostructure catalyst surface reconstruction,reaction mechanism,and the role of each component is highlighted with classical case ***,the current challenges and prospects for the design of heterostructure electrocatalysts are discussed in detail.

关键词： in situ/operando characterization heterostructure reconfiguration reaction mechanism electrochemical water splitting

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Electrochemical Kinetic Modulators in Lithium–Sulfur Batteries:From Defect-Rich Catalysts to Single Atomic Catalysts

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Energy & Environmental Materials 2022年第3期5卷 731-750页

作者： Jing Zhang Caiyin You Hongzhen Lin Jian Wang School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China i-Lab Suzhou Institute of Nano-tech and Nano-bionicsChinese Academy of SciencesSuzhou 215123China Helmholtz Institute Ulm(HIU) Ulm D89081Germany

Lithium–sulfur batteries exhibit unparalleled merits in theoretical energy density(2600 W h kg^(-1))among next-generation storage ***,the sluggish electrochemical kinetics of sulfur reduction reactions,sulfide oxidation reactions in the sulfur cathode,and the lithium dendrite growth resulted from uncontrollable lithium behaviors in lithium anode have inhibited high-rate conversions and uniform deposition to achieve high *** to the“adsorption-catalysis”synergetic effects,the reaction kinetics of sulfur reduction reactions/sulfide oxidation reactions composed of the delithiation of Li_(2)S and the interconversions of sulfur species are propelled by lowering the delithiation/diffusion energy barriers,inhibiting polysulfide ***,the anodic plating kinetic behaviors modulated by the catalysts tend to uniformize without dendrite *** this review,the various active catalysts in modulating lithium behaviors are summarized,especially for the defect-rich catalysts and single atomic *** working mechanisms of these highly active catalysts revealed from theoretical simulation to in situ/operando characterizations are also ***,the opportunities of future higher performance enhancement to realize practical applications of lithium–sulfur batteries are prospected,shedding light on the future practical development.

关键词： defect-rich catalyst electrochemical kinetic modulation in situ/operando characterization lithium–sulfur battery single atomic catalyst

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Recent Progress in and Perspectives on Emerging Halide Superionic Conductors for All‑Solid‑State Batteries

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Electrochemical Energy Reviews 2023年第1期6卷 234-279页

作者： Kaiyong Tuo Chunwen Sun Shuqin Liu School of Chemical and Environmental Engineering China University of Mining&Technology(Beijing)Beijing 100083China 21C Innovation Laboratory Contemporary Amperex Technology Ltd.(21C LAB)Ningde 352100FujianChina

Rechargeable all-solid-state batteries(ASSBs)are considered to be the next generation of devices for electrochemical energy *** development of solid-state electrolytes(SSEs)is one of the most crucial subjects in the field of energy storage *** newly emerging halide SSEs have recently been intensively studied for application in ASSBs due to their favorable combination of high ionic conductivity,exceptional chemical and electrochemical stability,and superior mechanical *** this review,a critical overview of the development,synthesis,chemical stability and remaining challenges of halide SSEs is *** design strategies for optimizing the ionic conductivity of halide SSEs,such as element substitution and crystal structure design,are summarized in ***,the associated chemical stability issues in terms of solvent compatibility,humid air stability and corresponding degradation mechanisms are *** particular,advanced in situ/operando characterization techniques applied to halide-based ASSBs are *** addition,a comprehensive understanding of the interface issues,cost issues,and scalable processing challenges faced by halide-based ASSBs for practical application is ***,future perspectives on how to design high-performance electrode/electrolyte materials are given,which are instructive for guiding the development of halide-based ASSBs for energy conversion and storage.

关键词： Halide solid-state electrolytes Synthesis Ionic conductivity Chemical stability in situ/operando characterization All-solid-state batteries

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Recent Advances in the Understanding of the Surface Reconstruction of Oxygen Evolution Electrocatalysts and Materials Development

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Electrochemical Energy Reviews 2021年第3期4卷 566-600页

作者： Junwei Chen Haixin Chen Tongwen Yu Ruchun Li Yi Wang Zongping Shao Shuqin Song The Key Lab of Low‑Carbon Chemistry&Energy Conservation of Guangdong Province PCFM LabSchool of Chemical Engineering and TechnologySchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275GuangdongChina Jiangsu National Synergetic Innovation Center for Advanced Materials State Key Laboratory of Materials‑Oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech UniversityNanjing 210009JiangsuChina WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWA 6102Australia

The electrochemical oxygen evolution reaction(OER)plays an important role in many clean electrochemical energy storage and conversion systems,such as electrochemical water splitting,rechargeable metal–air batteries,and electrochemical CO_(2) ***,the OER involves a complex four-electron process and suffers from intrinsically sluggish kinetics,which greatly impairs the efficiency of electrochemical *** addition,state-of-the-art RuO2-based OER electrocatalysts are too expensive and scarce for practical *** development of highly active,cost-effective,and durable electrocatalysts that can improve OER performance(activity and durability)is of significant importance in realizing the widespread application of these advanced *** date,considerable progress has been made in the development of alternative,noble metal-free OER *** these alternative catalysts,transition metal compounds have received particular attention and have shown activities comparable to or even higher than those of their precious metal *** contrast to many other electrocatalysts,such as carbon-based materials,transition metal compounds often exhibit a surface reconstruction phenomenon that is accompanied by the transformation of valence states during electrochemical OER *** surface reconstruction results in changes to the true active sites and an improvement or reduction in OER catalytic ***,understanding the self-reconstruction process and precisely identifying the true active sites on electrocatalyst surfaces will help us to finely tune the properties and activities of OER *** review provides a comprehensive summary of recent progress made in understanding the surface reconstruction phenomena of various transition metal-based OER electrocatalysts,focusing on uncovering the correlations among structure,surface reconstruction and intrinsic *** advances in OER electrocatalysts that

关键词： Oxygen evolution reaction(OER) Surface reconstruction Electrocatalyst Metal oxides in situ/operando characterization

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