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Durable ruthenium oxide catalysts for water oxidation reaction

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Science China Chemistry 2024年

作者： Jixiang Jiao ding Chen hongyu Zhao Ying Dong Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Water electrolysis is an important way for high-purity hydrogen production. However, the oxygen evolution reaction（OER）, as a key reaction, has a high energy barrier, and the associated catalyst is prone to failure. Therefore, efficient and stable OER catalysts are urgently required. Compared with commercial iridium oxide（IrO2）, ruthenium oxide（RuO2） has a lower price and higher catalytic activity for OER due to its location at the near-top of the volcano plot, but has lower structural stability. Thus, an in-depth understanding of the failure mechanism of RuO2is conducive to the reaction pathway design and structural modulation for obtaining higher stable RuO2catalysts. Here, we discuss recent advances in the enhancement of the stability of RuO2catalysts. First, we analyze in depth the three failure modes of RuO2, including the oxidation of Ru, the lattice oxygen evolution,and the catalyst exfoliation during the OER process. Second, to improve the durability of RuO2catalysts, five modification strategies, comprising defective engineering, strain engineering, phase engineering, interface engineering and microenvironmental engineering, are summarized, and corresponding enhancement mechanisms are also discussed. Finally, the challenges and possible solutions for further breakthroughs of RuO2catalysts are proposed, and the future research trends and prospects of RuO2catalysts are also envisioned. Undoubtedly, this work will contribute to the understanding and design of highly stable OER catalysts and beyond.

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Combination Patterns and Depositional Characteristics of Ordovician Carbonate Banks in the Western Tarim Basin,China

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Acta Geologica Sinica(English Edition) 2012年第4期86卷 894-911页

作者： HU Xiaolan FAN Tailiang GAO Zhiqian YU Bingsong CHEN Xiaozhi WANG hongyu WANG Jianping LI Rangbin ding Meng LI Yifan School of Energy Resources China University of Geosciences Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism Ministry of EducationChina University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences CNOOC Research Institute

The combination patterns and depositional characteristics of the carbonate banks are investigated based on outcrop sections, thin sections, and carbon isotopes of Ordovician in the western Tarim Basin, China. Four carbonate bank combination patterns are deposited in the Ordovician, western Tarim Basin, including： Reef-Bank Complex （RBC）, Algae-Reef-Bank Interbed （ARBI）, Thick-Layer Cake Aggradation Bank （TLCAB）, and Thin-Layer Cake Retrogradation Bank （TLCRB）. All combination patterns show clear periods vertically. The RBC is mainly composed of reefs and bioclastic banks, and the dimension of the RBC depends on the scale of the reefs. Bioclastic banks deposits surround the reefs. The range of the ARBI is determined by the scale of algae-reefs, algae peloid dolomite microfacies and algal dolomite microfacies deposit alternating vertically. TLCAB and TLCRB are deposited as layer-cakes stacking in cycles and extending widely with cross bedding developed. The grains of TLCAB and TLCRB are diverse and multi-source. With the impacting of relative sea level change, biological development and geomorphology, the ARBI, TLCAB or TLCRB, RBC are successively developed from the Lower Ordovician Penglaiba Formation to the Middle Ordovician Yijianfang Formation. The depositional environment analysis of Ordovician indicates that the RBC and ARBI can form effective oil and gas reservoirs, and the TLCAB and TLCRB have the potential to form the huge scale oil and gas reservoirs and to be the crucial targets of exploration for the Ordovician carbonate banks in the future.

关键词： Carbonate bank reef-bank complex algae-reef-bank interbed thick-layer cake aggradation bank thin-layer cake retrogradation bank Ordovician western Tarim Basin

Synergistic effect of fluorinated solvent and Mg^(2+)enabling 4.6 V LiCoO_(2)performances

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Chinese Chemical Letters 2023年第6期34卷 572-576页

作者： Yijia Huang Yidan Zhu hongyu Cheng Meng Liu Yingying Song Xiaoliang ding Kaiyun Xu Yinping Qin Yang Liu Bingkun Guo Materials Genome Institute Shanghai UniversityShanghai 200444China Tianmu Lake Institute of Advanced Energy Storage Technology Liyang 213300China

Increasing the charging cut-off potential of lithium cobalt oxide(LiCoO_(2),LCO)can effectively improve the energy density of the lithium-ion batteries,which are the mainstream energy storage devices used in 3C electronic ***,the continuous decomposition of the electrolyte and dissolution of Co from the electrode will occur at high-potential operation,which deteriorate the performances of ***,a cathode-electrolyte interface(CEI)layer containing Mg F_(2)is constructed to enhance the electrochemical stability of LCO at 4.6 V(***^(+)/Li).The Mg^(2+)added to the cathode gradually releases into the electrolyte during cycling,which forms a stable Mg F_(2)-rich protective *** addition,1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether(TTE)is added to the electrolyte acting as a F source to increase the content of Mg F_(2)in the CEI *** Mg F_(2)-rich CEI layer effectively suppresses the decomposition of electrolyte components and the dissolution of Co of LCO,which makes the Li||LiCoO_(2)(Li||LCO)cell cycled stably at 3~4.6 V(***^(+)/Li)in 200 cycles with a retention of 83.9%.

关键词： 4.6 V LiCoO_(2) Fluorinated solvent Mg^(2+)additive Lithium metal

Assessment of free and bound phenolics in the flowers and floral organs of two Camellia species flower and their antioxidant activities

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Food Bioscience 2022年第5期49卷 644-652页

作者： Zhuoya Xiang Chen Xia Shiling Feng Tao Chen Lijun Zhou Li Liu Qingbo Kong hongyu Yang Chunbang ding College of Life Science Sichuan Agricultural UniversityYa’an625014China Institute of Agro-Products Processing Science and Technology Sichuan Academy of Agricultural SciencesChengdu610066China

Camellia flowers are an important oil source containing abundant phenolic *** free and bound phenolic,flavonoid,and proanthocyanidin fractions and their antioxidant activity were investigated in Camellia oleifera flowers and Camellia polyodonta flowers,stamens,and *** compounds in *** were studied using high-resolution liquid chromatography-mass spectrometry,which revealed 85 phenolics,including flavonols>ellagitannins>procyanidins>phenolic acids>flavanone>organic *** fractions contributed more greatly to phenolic content and antioxidant capacity than bound fractions in all *** highest total phenolics(138.96 mg GAE/g DW),total flavonoids(423.20 mg RE/g DW),and total proanthocyanidins(61.08 mg PB2E/g DW)were obtained in the *** flowers,which also exhibited the highest total antioxidant *** terms of individual phenolic components,*** possessed the highest content of procyanidin B2,procyanidin B4,procyanidin C1,and epicatechin,while *** displayed the highest content of flavonoids such as quercitrin and afzelin,particularly in the *** results implied that Camellia flowers are important natural sources of active components for use in the food industry.

关键词： Camellia oleifera flower Camellia polyodonta flower UPLC-QTOF-MS/MS Phenolic compounds Antioxidant activity

In-situ photoisomerization of azobenzene to inhibit ion-migration for stable high-efficiency perovskite solar cells

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Journal of Energy Chemistry 2022年第10期31卷 556-564,I0014页

作者： Xuejiao Zuo Yiyang He hongyu Ji Yong Li Xiuying Yang Binxun Yu Tao Wang Zhike Liu Wenliang Huang Jing Gou Ningyi Yuan Jianning ding Shengzhong Frank Liu Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina School of Chemistry and Chemical Engineering Shaanxi Normal UniversityXi’an 710119ShaanxiChina School of Materials Science and Engineering Jiangsu Collaborative Innovation Center of Photovoltaic Science and EngineeringJiangsu Province Cultivation Base for StateKey Laboratory of Photovoltaic Science and TechnologyChangzhou UniversityChangzhou 213164JiangsuChina

Ion migration is a notorious problem in perovskite solar cells(PSCs)that severely mutilates device ***,a strategy to inhibit ion migration in situ is developed by using photoisomerization of azobenzene(AZO)to immobilize cations in the *** the nucleation process,the photoisomerized cis-AZO reacts with FA^(+),MA^(+)and Pb2+cations in the perovskite precursor by synergistic cation-πinteraction and Lewis base coordination,leading to heterogeneous nucleation to produce uniform perovskite ***,it accelerates conversion of intermediate yellowδ-phase to desired black aphase of FAPb I3for improved crystallinity with well-passivated grain ***,defect density is effectively reduced for the perovskite film to demonstrate suppressed carrier recombination and enhanced carrier ***,the solar cell efficiency is elevated from 21.29%to 23.58%with negligible J-V ***-term stability is also improved,with the bare device without any encapsulation retaining 84%of its initial efficiency after aging 744 hours in ambient.

关键词： Perovskite Solar cell Photovoltaic Photoisomerization

Influence of lunar regolith compressibility on sampling performance of thick wall spiral drills

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Chinese Journal of Aeronautics 2023年第2期36卷 350-362页

作者： Yong PANG Tao ZHANG hongyu WEI Ting ZENG Yinliang ZHANG Guidong MO Kun XU Shen YIN Guoxin WANG Xingwang ZHANG Xiaoming LAI Xilun ding Beijing Spacecrafts China Academy of Space TechnologyBeijing 100094China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China School of Electromechanical Engineering Guangdong University of TechnologyGuangzhou 510006China

A 2 m class robotic drill was sent to the Moon and successfully collected and returned regolith samples in late 2020 by *** was a typical thick wall spiral drill(TWSD)with a hollow auger containing a complex coring system to retain subsurface regolith *** the robotic drill was launched,a series of laboratory tests were carried out to investigate and predict the possible drilling loads it may encounter in the lunar *** work presents how the sampling performance of the TWSD is affected by the regolith *** and analysis during the drilling and sampling process in a simulated lunar regolith environment were *** compressibility of a typical lunar regolith simulant(LRS)was measured through unidirectional compression tests to study the relationship between its inner regolith stress and bulk density.A theoretical model was established to elucidate the cutting discharge behavior by auger flights based on the aforementioned *** were conducted with the LRS,and the results show that the sampling performance is greatly affected by the flux of the drilled cuttings into the spiral flight *** work helped in scheduling reasonable drilling parameters to promote the sampling performance of the robotic drill in the Chinese Chang’E 5 mission.

关键词： Drilling mechanics Lunar drilling Lunar regolith compressibility Regolith sampling performance Thick wall spiral drill

PlantscRNAdb: A database for plant single-cell RNA analysis

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Molecular Plant 2021年第6期14卷 855-857页

作者： hongyu Chen Xinxin Yin Longbiao Guo Jie Yao Yiwen ding Xiaoxu Xu Lu Liu Qian-Hao Zhu Qinjie Chu Longjiang Fan Institute of Crop Science and Institute of Bioinformatics Zhejiang UniversityHangzhou 310058China State Key Lab for Rice Biology China National Rice Research InstituteChinese Academy of Agricultural SciencesHangzhou 310006China CSIRO Agriculture and Food CanberraACT 2601Australia Shandong(Linyi)Institute of Modern Agriculture of Zhejiang University Fengyi StreetLinyiShandong ProvinceChina

Dear Editor,Many functional characteristics of plant tissue attribute to highly specialized cells in the *** cell types and profiling the transcriptome and proteome of individual cell types of plant tissues are important for understanding cellular activities underlying plant development and stress adaptation(Shaw et al.,2021).Single-cell RNA sequencing(scRNA-seq)provides such a tool for studying the transcriptional activities of individual cell types at single-cell resolution in any given organism(Rich-Griffin et al.,2020).

关键词： specialized cRNA

Tuning Active Metal Atomic Spacing by Filling of Light Atoms and Resulting Reversed Hydrogen Adsorption-Distance Relationship for Efficient Catalysis

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Nano-Micro Letters 2023年第10期15卷 151-162页

作者： ding Chen Ruihu Lu Ruohan Yu hongyu Zhao Dulan Wu Youtao Yao Kesong Yu Jiawei Zhu Pengxia Ji Zonghua Pu Zongkui Kou Jun Yu Jinsong Wu Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China NRC(Nanostructure Research Centre) Wuhan University of TechnologyWuhan 430070People’s Republic of China

Precisely tuning the spacing of the active centers on the atomic scale is of great significance to improve the catalytic activity and deepen the understanding of the catalytic mechanism,but still remains a ***,we develop a strategy to dilute catalytically active metal interatomic spacing(d_(M-M))with light atoms and discover the unusual adsorption *** example,by elevating the content of boron as interstitial atoms,the atomic spacing of osmium(d_(Os-Os))gradually increases from 2.73 to 2.96?.More importantly,we find that,with the increase in dOs-Os,the hydrogen adsorption-distance relationship is reversed via downshifting d-band states,which breaks the traditional cognition,thereby optimizing the H adsorption and H_2O dissociation on the electrode surface during the catalytic process;this finally leads to a nearly linear increase in hydrogen evolution reaction ***,the maximum dOs-Os of 2.96?presents the optimal HER activity(8 mV@10 mA cm^(-2))in alkaline media as well as suppressed O adsorption and thus promoted *** is believed that this novel atomic-level distance modulation strategy of catalytic sites and the reversed hydrogen adsorption-distance relationship can shew new insights for optimal design of highly efficient catalysts.

关键词： Electrocatalysis DFT calculation Interstitial filling Hydrogen evolution Structure–activity relationships

Physical Prior-Guided Semi-Supervised Variable Selection and Relative Contribution Localization Network for Key Performance Indicator Process Monitoring

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Physical Prior-Guided Semi-Supervised Variable Selection and...