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Electrocatalytic CO_(2)reduction for the selective production of liquid oxygenates

Journal of Energy Chemistry 2025年第4期103卷 568-600页

作者： Jiapeng Ji Junnan Chen Juxia Xiong Xiaolong Zhang Hui-Ming Cheng Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Faculty of Materials Science and Energy Engineering Shenzhen University of Advanced TechnologyShenzhen 518055GuangdongChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016LiaoningChina

Electrocatalytic CO_(2)reduction(ECR)to produce value-added fuels and chemicals using renewable electricity is an emerging strategy to mitigate global warming and decrease reliance on fossil *** various ECR products,liquid oxygenates(Oxys)are especially attractive due to their high energy density,high safety and transportability that could be adapted to the existing infrastructure and transportation ***,efficiently generating these highly reduced oxygen-containing products by ECR remains challenging due to the complexity of coupled proton and electron transfer *** recent years,in-depth studies of reaction mechanisms have advanced the design of catalysts and the regulation of reaction systems for ECR to produce Oxys,Here,by focusing on the production of typical Oxys,such as methanol,acetic acid,ethanol,acetone,n-propanol,and isopropanol,we outline various reaction paths and key intermediates for the electrochemical conversion of CO_(2)into these target *** also summarize the current research status and recent advances in catalysts based on their elemental composition,and consider recent studies on the change of catalyst geometry and electronic structure,as well as the optimization of reaction systems to increase ECR ***,we analyze the challenges in the field of ECR to Oxys and provide an outlook on future directions for high-efficiency catalyst prediction and design,as well as the development of advanced reaction systems.

关键词： Electrocatalytic CO_(2)reduction Geometry and electronic structure Parameters and system configurations Liquid oxygenates

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Influence of p-π conjugation inπ-πstacking molecules on passivating defects for efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2025年第3期102卷 282-289页

作者： Changqing Liu Benlin He Fanliang Bao Qihang Cheng Zhe Yang Meng Wei Zhiwei Ma Haiyan Chen Jialong Duan Qunwei Tang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina Institute of Carbon Neutrality College of Chemical and Biological EngineeringShandong University of Science and TechnologyQingdao 266590ShandongChina

A comprehensive understanding of the relevance between molecular structure and passivation ability to screen efficient modifiers is essential for enhancing the performance of perovskite solar cells(PSCs).Here,three similarπ-πstacking molecules namely benzophenone(BPN),diphenyl sulfone(DPS),and diphenyl sulfoxide(DPSO)are used as back-interface modifiers in carbon-based CsPbBr_(3)*** investigation,the results demonstrate the positive effect of the p-πconjugation characteristic inπ-πstacking molecules on maximizing their passivation *** p-πco njugation of DPSO enables a higher coordinative activity of oxygen atom in its S=O group than that in 0=S=O group of DPS and C=O group of BPN,which gives a superior passivation effect of DPSO on defects of perovskite *** modification of DPSO also significantly improves the p-type behavior of perovskite films and the back-interfacial energetics matching,inducing an increase of hole extraction and a decrease of energy ***,the unencapsulated carbon-based CsPbBr_(3)PSCs with DPSO achieve a maximum power conversion efficiency of 10.60%and outstanding long-term stability in high-temperature,high-humidity(85℃,85%relative humidity)air *** work provides insights into the influence of the structure ofπ-πstacking molecules on their ability to improve the perovskite films quality and therefore the PSCs performance.

关键词： carbon-based perovskite solar cells Interface modification π-πstacking p-πconjugation Defects passivation

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Fatigue failure analysis and heat treatment strategy optimization of torsion bar spring for automobile suspension system used in light vehicles

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Journal of Iron and Steel Research International 2025年第3期32卷 799-811页

作者： Jia-xing Liu Yong-jin Wu Chao-lei Zhang Wan-li Sun Wen-bin Ding Shuai-jun Dong Institute for Carbon Neutrality School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing100083China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang110167LiaoningChina

The failure analysis was conducted on unqualified torsion bar spring in automobile suspension system used for light vehicles during engine *** effects of through hardening,surface induction hardening,quenching and tempering,and tempering temperature on the microstructure and fatigue life of 45CrNiMoVA steel torsion bars were also *** showed that only the torsion bar spring after through quenching and tempering is subjected to surface induction quenching and tempering to achieve the fatigue life of the qualified torsion *** fatigue life of torsion bar spring reaches 3×10^(5) cycles more than the required 2×10^(5) *** is because the distribution of gradient microstructure was helpful to relieve the applied stress during the fatigue *** microstructure of the non-hardened region,which consists of tempered sorbite regardless of whether it is tempered at 330 or 430℃,contributes to minimizing the impact of temper brittleness on the fatigue life of the torsion ***,the fatigue life of the torsion bar is relatively unaffected by temper brittleness due to the presence of tempered sorbite in its non-hardened *** the reason for the unqualified fatigue life was that the depth and hardness of the hardened region did not meet the standard requirements of 5–7 mm and 47–52 HRC,respectively.

关键词： Fatigue life Torsion bar Tempering temperature 45CrNiMoVA steel Fracture

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Effect of compact strip processing on segregation behavior and mechanical properties of Q&P steel

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Journal of Iron and Steel Research International 2025年第3期32卷 733-742页

作者： Ming-yue Yang Sheng-wei Wang Shui-ze Wang Yu-he Huang Xin-ping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing100083China Institute for Steel Sustainable Technology Liaoning Academy of MaterialsShenyang110000LiaoningChina Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing100083China

The microstructure and mechanical properties of the compact strip production(CSP)processed quenching and partitioning(Q&P)steels were investigated through experimental methods to address the challenge of designing high-performance Q&P *** with the conventional process(CP)produced samples,with slightly reduced strength,the total elongation of the CSP produced samples was increased by nearly 7%.Microstructural analysis revealed that variations in austenite stability were not the primary cause for the differences in mechanical properties between the CSP and the *** CSP processed Q&P steel exhibited milder center segregation behavior in contrast to the CP processed Q&P ***,in the CSP processed Q&P steel,a higher proportion of austenite and a lower proportion of martensite were observed at the center position,delaying the crack initiation in the central region and contributing to the enhanced *** investigation into the CSP process reveals its effect on alleviation of segregation and enhancement of mechanical properties of the Q&P steel.

关键词： Compact strip production Conventional process Segregation Martensite transformation Quenching and partitioning steel Retained austenite

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Impact of CO_(2)as an oxidant on the decarburization and chromium retention and an approach for CO_(2)recycling

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Chinese Journal of Chemical engineering 2025年第1期77卷 203-206页

作者： Yun Zhou Wenzhi Xia Guangsheng Wei Haichuan Wang School of Metallurgical Engineering Anhui University of TechnologyMaanshan 243032China Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Liaoning Academy of Materials Shenyang 110000China

This study explores the unique role of CO_(2)as an oxidant in stainless steel smelting,focusing on its effectiveness in decarbonization and chromium *** research begins by theoretically demonstrating that although the introduction of CO_(2)increases the CO partial pressure in the reaction system,the decarburization and chromium(Cr)retention capabilities of CO_(2)can still be stably maintained through the rational adjustment of the molten steel composition,temperature,and inert gas *** experimental findings indicate that chromium does not exhibit significant oxidation losses when the carbon(C)content exceeds 1.0%(mass).Finally,a novel CO_(2)recovery and utilization approach is proposed,integrating CO_(2)capture from smelting flue gas and recycling it for smelting,reducing O_(2)consumption and energy *** innovative process,compatible with existing smelting plants,presents a promising pathway towards carbon neutrality in the iron and steel industry,bridging theoretical insights with practical applications.

关键词： carbon dioxide Oxidation Decarburization Chromium retention Chemical reaction Stainless steel smelting

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Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and materials 2025年第2期32卷 256-269页

作者： Zhihao Tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui Wu Shuize Wang Guilin Wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

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Photoelectrochemical CO2 fixation to C2 hydrocarbons

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science China Chemistry 2025年第6期68卷 2204-2205页

作者： Ning Zhang Yujie Xiong Department of Environmental Science and Engineering School of Chemistry and Materials Science University of Science and Technology of China Sustainable Energy and Environmental Materials Innovation Center Suzhou Institute for Advanced Research University of Science and Technology of China Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials Science Anhui Normal University

Artificial CO2fixation to hydrocarbons represents a promising means to achieve the sustainable development goals（SDGs） fundamentally. The corresponding C2products（such as ethane and ethylene） are highly desirable ...

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engineering N_(3C) vacancies in hierarchical porous carbon nitride nanosheets for room temperature ultradeep photocatalytic aerobic oxidative desulfurization

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science China Chemistry 2025年第4期68卷 1608-1619页

作者： Yina Nie Weijie Yang Xin Wang Xiang Li Lele Wei Xiaolin Bai Lin Liu Feng Fu Jun Wan College of Chemistry&Chemical Engineering Research Institute of Comprehensive Energy Industrial TechnologyShaanxi Key Laboratory of Chemical Reaction EngineeringYan'an UniversityYan'an 716000China Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241002China

The production of ultra-low sulfur clean fuels holds global significance for improving energy efficiency and reducing environmental *** aerobic oxidative desulfurization(PODS)offers an attractive approach to efficiently remove refractory heterocyclic aromatic sulfur compounds under mild ***;the sluggish charge dynamics;insufficient molecule activation;and slow mass transfer within photocatalysts restrict the overall desulfurization efficiency;hindering the widespread application of this ***;we developed a defective g-C3N4(M1U3CN)photocatalyst with bridged N_(3C)vacancies and hierarchical porous structures to address these *** catalyst not only demonstrates outstanding dibenzothiophene(DBT)removal efficiency of 99.6%for model oil with high conversion and selectivity but also achieves complete sulfur removal from gasoline as well as 96.7%sulfur removal for distilled diesel at room temperature;successfully achieving ultradeep aerobic oxidative *** introduction of rich N_(3C)vacancies and abundant micromeso-macroporous distribution in M_(1)U_(3)CN enhances kinetic efficiencies by promoting charge carrier separation;mass transfer;and molecular activation simultaneously;resulting in exceptional PODS *** work provides a collaborative strategy to overcome kinetic challenges in aerobic oxidative desulfurization via defect and structural engineering of the catalyst.

关键词： desulfurization photocatalysis carbon nitride defect engineering hierarchical pores

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Unveiling solid-solid contact states in all-solid-state lithium batteries:An electrochemical impedance spectroscopy viewpoint

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Journal of Energy Chemistry 2025年第2期101卷 16-22,I0002页

作者： Jin-Liang Li Liang Shen Zi-Ning Cheng Jun-Dong Zhang Ling-Xuan Li Yu-Tong Zhang Yan-Bin Gao Chunli Guo Xiang Chen Chen-Zi Zhao Rui Zhang Qiang Zhang Tsinghua Center for Green Chemical Engineering Electrification Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Advanced Research Institute of Multidisciplinary Science School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Huairou Laboratory Beijing 101400China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxChina Institute for Carbon Neutrality Tsinghua UniversityBeijing 100084China Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuan 030032ShanxiChina

All-solid-state lithium batteries(ASSLBs)are strongly considered as the next-generation energy storage devices for their high energy density and intrinsic *** solid-solid contact between lithium metal and solid electrolyte plays a vital role in the performance of working ASSLBs,which is challenging to investigate quantitatively by experimental *** work proposed a quantitative model based on the finite element method for electrochemical impedance spectroscopy simulation of different solid-solid contact states in *** the assistance of an equivalent circuit model and distribution of relaxation times,it is discovered that as the number of voids and the sharpness of cracks increase,the contact resistance Rcgrows and ultimately dominates the battery *** accurate fitting,inverse proportional relations between contact resistance Rcand(1-porosity)as well as crack angle was *** contribution affords a fresh insight into clarifying solid-solid contact states in ASSLBs.

关键词： Electrochemical impedance spectroscopy All-solid-state lithium batteries Solid-solid contacts Finite element method Equivalent circuit model Distribution of relaxation times

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Field-induced reversible assembly of one-dimensional colloids

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science Bulletin 2025年第9期70卷 1371-1374页

作者： Tian, Siyuan Chen, Xinman Cheng, Hui-Ming Ding, Baofu Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenzhen518055 China Guangdong Engineering Research Center of Optoelectronic Functional Materials and Devices School of Semiconductor Science and Technology South China Normal University Foshan528225 China Faculty of Materials Science and Energy Engineering Shenzhen University of Advanced Technology Shenzhen518055 China

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