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Progress on nanostructured gel catalysts for oxygen electrocatalysis

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Nano Research 2022年第12期15卷 10343-10356页

作者： Huan Yang Huilin Hu Chenfeng xia Feng You Junlong Yao Xueliang Jiang bao yu xia Wuhan Institute of Technology Hubei Key Laboratory of Plasma Chemistry and Advanced MaterialsSchool of Materials Science and EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationWuhan430205China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan430074China

Driven by the serious ecological problems,it is urgent to explore high-efficiency sustainable energy *** electrocatalysis acts as important half-reactions in the emerging electrochemical energy techniques including electrolysis and *** composites exhibit the merits of rich porous,superior hydrophilic,and large specific surface area,which can significantly improve the electrolyte penetration and boost the kinetics process of oxygen *** this invited contribution,the advances and challenges of a novel gel materials for oxygen electrocatalysis are *** from the structure-activity-performance relationship of gel materials,synthetic routes of nanostructured gel materials,namely,radical polymerization,sol-gel method,hydrothermal/solvothermal reactions,and ligand-substitution method,are ***,the gel composites are divided into polymer-based,metal-based,and carbon-based materials in turn,and their applications in oxygen electrocatalysis are discussed *** the end,the perspective and challenges for advanced gel oxygen electrocatalysts are proposed.

关键词： oxygen electrocatalysis gel materials polymer metal carbon

Trimetallic PtRhNi alloy nanoassemblies as highly active electrocatalyst for ethanol electrooxidation

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Nano Research 2017年第10期10卷 3324-3332页

作者： Huimin Liu Jiahui Li Lijuan Wang Yawen Tang bao yu xia yu Chen Key Laboratory of Macromolecular Science of Shaanxi Province Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University 620 Changan Road Xi'an 710062 China Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional Materials School of Chemistry and Materials Science Nanjing Normal University 1 Wenyuan Road Nanjing 210023 China A key laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology (HUST) 1037 Luoyu Road Wuhan 430074 China Shenzhen Institute of Huazhong University of Science and Technology 9 Yuexing Road Shenzhen 518000 China

Although nanostructures based on noble metal alloys are widely utilized in （electro）catalysis, their low-temperature synthesis remains an enormous challenge due to the different Nernst equilibrium potentials of metal precursors. Herein, we describe the successful synthesis of trimetallic PtRhNi alloy nanoassemblies （PtRhNi-ANAs） with tunable Pt/Rh ratios using a simple mixed cyanogel reduction method and provide a detailed characterization of their chemical composition, morphology, and structure. Additionally, the electrochemical properties of PtRhNi-ANAs are examined by cyclic voltammetry, revealing composition- dependent electrocatalytic activity in the ethanol oxidation reaction （EOR）. Compared to a commercial Pt black electrocatalyst, optimized Pt3Rh1Ni2-ANAs display remarkably enhanced EOR electrocatalytic performance in alkaline media.

关键词： cyanogel trimetallic alloy electrocatalysis activity ethanol oxidation reaction

Exfoliation and dispersion of graphene in ethanol-water mixtures

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Frontiers of Materials Science 2012年第2期6卷 176-182页

作者： Wei-Wei LIU bao-yu xia xiao-xia WANG Jian-Nong WANG Shanghai Key Laboratory for Laser Processing and Materials Modification School of Materials Science and EngineeringShanghai Jiao Tong University800 Dong Chuan RoadShanghai 200240China School of Materials Science and Engineering Tongji University1239 Siping RoadShanghai 200092China Key Laboratory of Safety Science of Pressurized System(Ministry of Education) ScHool of Mechanical and Power EngineeringEast China University of Science and Technology130 Meilong RoadShanghai 200237China

Graphene has attracted much attention as a new nano-carbon for its unique structure and properties. However, production and dispersion of unfunctionalized graphene are still big challenges. Herein, we demonstrate a simple method for preparation and dispersion of such graphene with low cost and non toxicum. This approach is achieved by exfoliating graphite in an ethanol/water mixture and forming stable dispersion of mono- and few-layer graphenes. The ratio of ethanol/water in the mixture is found to be crucial to both the exfoliation and dispersion processes. Exfoliation in pure water or pure ethanol produces no graphene. This method avoids the conventional use of harsh oxidants and surfactants; therefore, the graphitic structure is well maintained without destruction. Benefiting from the use of ethanol and water, it can be easy to prepare transparent and conductive graphene films by vacuum filtering or spray method, and does not need special post-treatment to remove the impurity, which could be beneficial for potential applications in electronic, optic and energy areas.

关键词： graphene liquid-phase exfoliation transparent conductive film solubilityparameter

Continuous nitrogen-doped carbon nanotube matrix for boosting oxygen electrocatalysis in rechargeable Zn-air batteries

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Journal of Energy Chemistry 2021年第4期30卷 183-189页

作者： Guangda Chen Yangyang Xu Lei Huang Aboulkader Ibro Douka bao yu xia Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina

Developing robust oxygen electrocatalyst with high-performance is very significant for practical rechargeable Zn-air *** report herein the preparation of three-dimensional continuous nanocarbon network composed of interconnected nitrogen-doped carbon nanotubes and its application as oxygen electrocatalysis in rechargeable Zn-air *** the excellent electrochemical bifunctionality,this carbon nanotube matrix also delivers an impressive battery ***,an opencircuit voltage of 1.50 V as well as a high power density of 220 m W cm^(-2) with remarkable cycling stability for 1600 h is achieved in the rechargeable Zn-air *** study not only provides an efficient bifunctional oxygen electrocatalyst but more importantly may pave significant concepts in designing robust electrode for long-life rechargeable Zn-air battery and other energy technologies.

关键词： Zeolitic-imidazolate framework Carbon nanotube Bifunctionality Electrocatalyst Zn-air battery

Recent Advances on MOF Derivatives for Non-Noble Metal Oxygen Electrocatalysts in Zinc-Air Batteries

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Nano-Micro Letters 2021年第9期13卷 164-192页

作者： yuting Zhu Kaihang yue Chenfeng xia Shahid Zaman Huan Yang xianying Wang Ya Yan bao yu xia School of Materials Science&Engineering University of Shanghai for Science and Technology516 Jungong RoadShanghai 200093People’s Republic of China Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)1037 Luoyu RoadWuhan 430074People’s Republic of China CAS Key Laboratory of Materials for Energy Conversion Shanghai Institute of CeramicsChinese Academy of Sciences(SICCAS)Shanghai 200050People’s Republic of China

Oxygen electrocatalysts are of great importance for the air electrode in zinc-air batteries(ZABs).Owing to the high specific surface area,controllable pore size and unsaturated metal active sites,metal-organic frameworks(MOFs)derivatives have been widely studied as oxygen electrocatalysts in *** date,many strategies have been developed to generate efficient oxygen electrocatalysts from MOFs for improving the performance of *** this review,the latest progress of the MOF-derived non-noble metal-oxygen electrocatalysts in ZABs is *** performance of these MOF-derived catalysts toward oxygen reduction,and oxygen evolution reactions is discussed based on the categories of metal-free carbon materials,single-atom catalysts,metal cluster/carbon composites and metal compound/carbon ***,we provide a comprehensive overview on the design strategies of various MOF-derived non-noble metal-oxygen electrocatalysts and their structure-performance ***,the challenges and perspectives are provided for further advancing the MOF-derived oxygen electrocatalysts in ZABs.

关键词： Metal-organic framework Non-noble metal Oxygen electrocatalysts Air electrode Zinc-air batteries

Molecular engineering binuclear copper catalysts for selective CO_(2) reduction to C_(2) products

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Journal of Energy Chemistry 2024年第6期93卷 166-173,I0005页

作者： Qi Zhao Kai Lei bao yu xia Rachel Crespo-Otero Devis Di Tommaso Department of Chemistry School of Physical and Chemical SciencesQueen Mary University of LondonLondonE14NSUK Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureState Key Laboratory of Materials Processing and Die&Mould TechnologySchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina Department of Chemistry University College LondonLondonWC1H 0AJUK Digital Environment Research Institute Queen Mary University of LondonEmpire HouseLondon E11HHUK

Molecular copper catalysts serve as exemplary models for correlating the structure-reaction-mechanism relationship in the electrochemical CO_(2) reduction(eCO_(2)R),owing to their adaptable environments surrounding the copper metal *** investigation,employing density functional theory calculations,focuses on a novel family of binuclear Cu molecular *** modulation of their coordination configuration through the introduction of organic groups aims to assess their efficacy in converting CO_(2) to C_(2)*** findings highlight the crucial role of chemical valence state in shaping the characteristics of binuclear Cu catalysts,consequently influencing the eCO_(2)R behaviour,Notably,the Cu(Ⅱ)Cu(Ⅱ)macrocycle catalyst exhibits enhanced suppression of the hydrogen evolution reaction(HER),facilitating proton trans fer and the eCO_(2)R *** rthermore,we explo re the impact of diverse electro n-withdrawing and electron-donating groups coordinated to the macrocycle(R=-F,-H,and-OCH_3)on the electron distribution in the molecular *** placement of-OCH_3 groups in the macrocycles leads to a favourable oxidation state of the Cu centres and subsequent C-C coupling to form C_(2) *** research provides fundamental insights into the design and optimization of binuclear Cu molecular catalysts for the electrochemical conversion of CO_(2) to value-added C_(2) products.

关键词： Molecular catalyst design Selective CO_(2)reduction C_(2)products Density functional theory calculations

Emerging catalytic materials for practical lithium-sulfur batteries

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Journal of Energy Chemistry 2023年第1期76卷 127-145,I0004页

作者： Fangyi Shi Lingling Zhai Qingqing Liu Jingya yu Shu Ping Lau bao yu xia Zheng-Long Xu Department of Industrial and Systems Engineering Department of Applied PhysicsResearch Institute of Advanced Manufacturingthe Hong Kong Polytechnic UniversityHung HomHong Kong SARChina Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina State Key Laboratory of Ultraprecision Machining Technology the Hong Kong Polytechnic UniversityHung HomHong Kong SARChina Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057GuangdongChina

High-energy lithium-sulfur batteries(LSBs)have experienced relentless development over the past decade with discernible improvements in electrochemical ***,a scrutinization of the cell operation conditions reveals a huge gap between the demands for practical batteries and those in the *** sulfur loading,a high electrolyte/sulfur(E/S)ratio and excess anodes for lab-scale LSBs significantly offset their high-energy *** approach practical LSBs,high loading and lean electrolyte parameters are needed,which involve budding challenges of slow charge transfer,polysulfide precipitation and severe shuttle *** track these obstacles,the exploration of electrocatalysts to immobilize polysulfides and accelerate Li-S redox kinetics has been widely ***,this review aims to survey state-of-the-art catalytic materials for practical LSBs with emphasis on elucidating the correlation among catalyst design strategies,material structures and electrochemical *** also statistically evaluate the state-of-the-art catalyst-modified LSBs to identify the remaining discrepancy between the current advancements and the real-world *** closing,we put forward our proposal for a catalytic material study to help realize practical LSBs.

关键词： Lithium-sulfur battery Catalytic materials High sulfur loading Lean electrolyte

Metal-organic framework membranes: From synthesis to electrocatalytic applications

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Chinese Chemical Letters 2020年第9期31卷 2189-2201页

作者： xiaobang Liu Ting yue Kai Qi yubing Qiu bao yu xia Xingpeng Guo Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074China School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China

Metal-orga nic frameworks(MOFs),as an emerging family of porous inorga nic-organic crystal materials,exhibit widely applications in gas storage and separation,drug release,sensing,and catalysis,owing to easily adjustable pore sizes,uniformly distributed metal centers,high surface areas,and tunable ***,MOF crystal powders are usually difficult to be directly applied into specific devices because of their brittleness,insolubility and low ***,to expand versatile MOF membranes with robustness and operational flexibility is urgent to satisfy practical *** numerous reports have reviewed the synthesis and applications of MOF membranes,relatively few reports the electrocatalytic properties based on MOF ***,this mini-review provides an overview of preparation of MOF membranes,including directed synthesis,secondary growth and electrochemical deposition ***,fabrication of ultrathin 2D MOF nanosheets those can be also defined as a kind of nanoscale MOF membranes is also *** performance of oxygen reduction reaction(ORR),oxygen evolution reaction(OER),hydrogen evolution reaction(HER)and CO2 reduction reaction(CO2RR) for diverse MOF membranes/nanosheets and their derivatives are introduced.

关键词： Metal-organic frameworks Membranes Nanosheets Derivatives Synthesis Electrocatalysis

Advanced polymer-based electrolytes in zinc-air batteries

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eScience 2022年第5期2卷 453-466页

作者： Qingqing Liu Ruiting Liu Chaohui He Chenfeng xia Wei Guo Zheng-Long Xu bao yu xia Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)1037 Luoyu RdWuhan430074PR China State Key Laboratory of Ultraprecision Machining Technology Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityHong Kong SARPR China

Zinc–air batteries(ZABs)are expected to be some of the most promising power sources for wearable and portable electronic devices and have received widespread research *** an ion conductor connecting anodes and cathodes,the electrolyte is critical for the overall performance of ZABs(e.g.,energy density,rechargeability,and operating voltage).Compared with liquid electrolytes,polymer-based electrolytes have superior characteristics for ZABs,such as negligible electrolyte leakage,three-phase interface stabilization,and dendrite *** this perspective,we focus on recent progress in polymer-based electrolytes for *** a brief introduction to ZABs and electrolytes,we emphasize the development of polymer-based electrolytes in terms of their intrinsic properties and interfacial ***,challenges and viable strategies are proposed for polymer-based electrolytes in *** hope that this work will provide useful guidance to spur the development of high-performance ZABs based on advanced polymer-based electrolytes.

关键词： Zinc–air batteries Electrolytes Interface Polymers Gels