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Non-precious metal electrocatalysts for two-electron oxygen electrochemistry: Mechanisms, progress, and outlooks

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Journal of Energy Chemistry 2022年第6期31卷 54-69,I0003页

作者： Yuhan Wu Jianhui Sun shixue dou Jingyu Sun School of Environment Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control-Ministry of EducationHenan Normal UniversityXinxiang 453007HenanChina College of Energy Soochow Institute for Energy and Materials InnovationsKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006JiangsuChina Institute for Superconducting and Electronic Materials University of WollongongWollongongNSW 2522Australia

Hydrogen peroxide (H_(2)O_(2)) is a valuable chemical for a wide variety of applications. The environmentally friendly production route of the electrochemical reduction of O_(2)to H_(2)O_(2) has become an attractive alternative to the traditional anthraquinone process. The efficiency of electrosynthesis process depends considerably on the availability of cost-effective catalysts with high selectivity, activity, and ***, there are many outstanding issues in the preparation of highly selective catalysts, the exploration of the interface electrolysis environment, and the construction of electrolysis devices, which have led to extensive research efforts. Distinct from the existing few comprehensive review articles on H_(2)O_(2) production by two-electron oxygen reduction, the present review first explains the principle of the oxygen reduction reaction and then highlights recent advances in the regulation and control strategies of different types of catalysts. Key factors of electrode structure and device design are discussed. In addition,we highlight the promising co-production combination of this system with renewable energy or energy storage systems. This review can help introduce the potential of oxygen reduction electrochemical production of high-flux H_(2)O_(2) to the commercial market.

关键词： 2e-ORR(oxygen reduction reaction) H_(2)O_(2) Heteroatom doping Single atom Carbon-based catalyst

Mesocrystal Co3O4 nanoplatelets as high capacity anode materials for Li-ion batteries

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Nano Research 2014年第5期7卷 794-803页

作者： Dawei Su shixue dou Guoxiu Wang Institute for Superconducting & Electronic Materials University of Wollongong Wollongong NSW 2522 Australia Centre for Clean Energy Technology School of Chemistry and Forensic Science University of Technology Sydney Broadway Sydney NSW 2007 Australia

Faceted crystals with exposed highly reactive planes have attracted intensive investigations for applications. Herein, we demonstrate a general synthetic method to prepare mesocrystal Co3O4 with predominantly exposed {111} reactive facets by the in situ thermal decomposition from Co（OH）2 nanoplatelets. The mesocrystal feature was identified by field emission scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, and N2 isotherm analyses. When applied as anode material in lithium-ion batteries, mesocrystal Co3O4 nanoplatelets delivered a high specific capacity and an outstanding high rate performance. The superior electrochemical performance should be ascribed to the predominantly exposed {111} active facets and highly accessible surfaces. This synthetic strategy could be extended to prepare other mesocrystal functional nanomaterials.

关键词： msoporous material faceted crystal anode materiallithium ion battery

Recent progress in thermoelectric materials

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Chinese Science Bulletin 2014年第18期59卷 2073-2091页

作者： Chao Han Zhen Li shixue dou Institute for Superconducting and Electronic Materials Squires WayUniversity of WollongongWollongong 2500NSWAustralia

Direct conversion of heat into electricity through advanced thermoelectric(TE)materials has been one of the most attractive solutions to the severe environmental and energy issues facing *** recent years,great progress has been made in improving their dimensionless figure of merit(ZT),which determines the conversion efficiency of TE *** is related to three‘‘interlocked’’factors—the Seebeck coefficient,electrical conductivity,and thermal *** three factors are interdependent in bulk TE materials,and altering one changes the other *** difficulty in simultaneously optimizing them caused TE research to stagnate,until great reductions in thermal conductivity were both theoretically and experimentally proven in nanomaterials in *** this review,we first introduce some TE fundamentals and then review the most recently improvements in ZT in different kinds of inorganic and organic TE materials,which is followed by an investigation of the outlook for new directions in TE technology.

关键词：热电材料 Seebeck系数直接转换能源问题转换效率纳米材料热导率 TE

Effects of nanostructure on clean energy: big solutions gained from small features

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Science Bulletin 2015年第24期60卷 2083-2090页

作者： Jinyan Xiong Chao Han Zhen Li shixue dou Institute for Superconducting and Electronic Materials Australian Institute for Innovative Materials University of Wollongong School of Radiation Medicine and Radiation Protection Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow University

The increasing energy consumption and environmental concerns have driven the development of costeffective, high-efficiency clean energy. Advanced functional nanomaterials and relevant nanotechnologies are playing a crucial role and showing promise in resolving some energy issues. In this view, we focus on recent advances of functional nanomaterials in clean energy applications, including solar energy conversion, water splitting, photodegradation, electrochemical energy conversion and storage, and thermoelectric conversion, which have attracted considerable interests in the regime of clean energy.

关键词： nanostructures Photocatalysis Solar energy -Electrochemical energy conversion and storage Thermoelectric conversion

Recent advances in chemical adsorption and catalytic conversion materials for Li–S batteries

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Journal of Energy Chemistry 2020年第3期29卷 144-168页

作者： Xiaodong Hong Rui Wang Yue Liu Jiawei Fu Ji Liang shixue dou College of Materials Science and Engineering Liaoning Technical University47 Zhonghua RoadFuxin 123000LiaoningChina Institute for Superconducting&Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongInnovation CampusSquires WayNorth WollongongNSW 2500Australia

Owing to their low cost,high energy densities,and superior performance compared with that of Li-ion batteries,Li–S batteries have been recognized as very promising next-generation ***,the commercialization of Li–S batteries has been hindered by the insulation of sulfur,significant volume expansion,shuttling of dissolved lithium polysulfides(Li PSs),and more importantly,sluggish conversion of polysulfide *** overcome these problems,a state-of-the-art strategy is to use sulfur host materials that feature chemical adsorption and electrocatalytic capabilities for Li PS *** this review,we comprehensively illustrate the latest progress on the rational design and controllable fabrication of materials with chemical adsorbing and binding capabilities for Li PSs and electrocatalytic activities that allow them to accelerate the conversion of Li PSs for Li–S ***,the current essential challenges encountered when designing these materials are summarized,and possible solutions are *** hope that this review could provide some strategies and theoretical guidance for developing novel chemical anchoring and electrocatalytic materials for high-performance Li–S batteries.

关键词： Chemical adsorption Electrocatalysis Li–S batteries Lithium polysulfides Shuttle effect

Advanced two-dimensional materials toward polysulfides regulation of metal-sulfur batteries

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SmartMat 2023年第5期4卷 57-86页

作者： Haining Fan Wenbin Luo shixue dou Zijian Zheng School of Fashion and Textiles The Hong Kong Polytechnic UniversityHong KongChina Section of Environmental Protection Key Laboratory of Eco-Industry Institute for Energy Electrochemistry and Urban Mines MetallurgySchool of MetallurgyNortheastern UniversityShenyangChina Institute of Energy Materials Science(IEMS) University of Shanghai for Science and TechnologyShanghaiChina Department of Applied Biology and Chemical Technology Faculty of ScienceThe Hong Kong Polytechnic UniversityHong KongChina Research Institute for Inteligent Wearable Systems The Hong Kong Polytechnic UniversityHong KongChina Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongChina

Metal-sulfur battery,which provides considerable high energy density at a low cost,is an appealing energy-storage technology for future long-range electric vehicles and large-scale power *** major challenge of metal-sulfur batteries is their long-term cycling stability,which is significantly deteriorated by the generation of various soluble polysulfide intermediates and the shuttling of these intermediates through the ***,the intrinsically sluggish reaction kinetics associated with the poor conductivity of sulfur/sulfides family causes a large polarization in cycle behavior,which further deteriorates the electrode *** solve these problems,the research communities have spent a great amount of effort on designing smart cathodes to delicately tailor the physiochemical interaction between the sulfur hosts and ***,we summarize the key progress in the development of two-dimensional(2D)host materials showing advantageous tunability of their physiochemical properties through coordination control methods such as defect engineering,heteroatom doping,heterostructure,and phase and interface ***,we discuss the mechanisms of polysulfide anchoring and catalyzing upon specific coordination environment in conjunction with possible structure-property relationships and theoretical *** review will provide prospective fundamental guidance for future sulfur host design and beyond.

关键词： 2D materials electrode engineering energy storage metal-sulfur batteries polysulfide regulation

Research Progress of Electromagnetic Properties of MgB2 Induced by Carbon-Containing Materials Addition and Process Techniques

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Acta Metallurgica Sinica(English Letters) 2020年第4期33卷 471-489页

作者： Jiancheng Li Haobo Liu Ying Li Chuanbing Cai shixue dou Wenxian Li Institute of Materials Laboratory for MicrostructuresSchool of Materials Science and EngineeringShanghai University149 Yanchang RoadShanghai 200072China Institute for Sustainable Energy Shanghai University99 Shangda RoadShanghai 200444China Institute for Superconducting and Electronic Materials University of WollongongWollongongNSW 2522Australia Shanghai Key Laboratory of High Temperature Superconductors 99 Shangda RoadShanghai 200444China

For the high transition temperature(Tc) and low cost taking both raw materials and fabrication process into account,MgB2 has been a competitive candidate to replace the conventional NiTi superconductor for high-temperature application in fault current limiters,transformers,motors,magnetic resonance imaging,adiabatic demagnetization refrigerators,generators,*** carbon-containing materials addition induced high critical current density(Jc) is reviewed based on their influences on the upper critical field(Hc2),flux pinning force,and *** doping effects were compared in the overview focusing on SiC,organic dopants,and graphene-related *** doping is featured for the high-field critical current density,which is caused by the increased Hc2 attributed to the substitution of carbon on boron site and the strong flux pinning force offered by the nanosized secondary phases in the MgB2 *** dopants have the advantage over SiC dopant for their relatively homogeneous distribution in the MgB2 matrix based on wet mixing of the organics and the raw boron *** doping level of two-dimensional materials can improve the superconducting properties in all measured fields because of the combined advantages of carbon substitution effect and grain ***2 fabricated with carbon-encapsulated boron also introduces strong flux pinning centers in MgB2,which show weak destruction of the connectivity of the MgB2 grains as reflected by the low-magnetic-supercurrent ***-pressure treatment and diffusion method can fabricate highdensity MgB2 superconductors with better connectivity and increase the Jc compared with the in situ and ex situ methods.

关键词： Critical current density(J_c) Flux pinning Doping 2D flux pinning centers

Hierarchical Encapsulation and Rich sp^(2)N Assist Sb_(2)Se_(3)-Based Conversion-Alloying Anode for Long-Life Sodium-and Potassium-Ion Storage

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Energy & Environmental Materials 2023年第6期6卷 372-382页

作者： Shaokun Chong Meng Ma Lingling Yuan Shuangyan Qiao Shihong Dong Huakun Liu shixue dou Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics and Xi'an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi'an 710072China Institute for Superconducting and Electronic Materials University of WollongongWollongong NSW 2522Australia

Sodium-and potassium-ion batteries have exhibited great application potential in grid-scale energy storage due to the abundant natural resources of Na and ***-alloying anodes with high theoretical capacity and low-operating voltage are ideal option for SIBs and PIBs but suffer the tremendous volume ***,a hierarchically structural design and sp^(2)N-doping assist a conversion-alloying material,Sb_(2)Se_(3),to achieve superior life span more than 1000 *** is confirmed that the Sb_(2)Se_(3)evolves into nano grains that absorb on the sp^(2)N sites and in situ form chemical bonding of C-N-Sb after initial *** results indicate that sp^(2)N has more robust interaction with Sb and stronger adsorption capacities to Na^(+)and K^(+)than that of sp3 N,which contributes to the durable cycling ability and high electrochemical activity,*** ex situ transmission electron microscopy and X-ray photoelectron spectroscopy results suggest that the Sb_(2)Se_(3)electrode experiences conversion-alloying dual mechanisms based on 12-electron transfer per formula unit.

关键词： antimony selenide conversion-alloying anode N-doped carbon potassium-ion batteries sodium-ion batteries

Synergistic impact of cocatalysts and hole scavenger for promoted photocatalytic H2 evolution in mesoporous TiO2–NiSx hybrid

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Journal of Energy Chemistry 2019年第5期28卷 45-56页

作者： Yi Wei Gang Cheng Jinyan Xiong Jiaxin Zhu Yixin Gan Mengmeng Zhang Zhen Li shixue dou School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430073HubeiChina College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200HubeiChina School of Radiation Medicine and Radiation Protection Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123JiangsuChina Institute for Superconducting and Electronic Materials University of Wollongong.North Wollongong NSW2500Australia

Photocatalytic solar energy conversion to hydrogen is sustainable and attractive for addressing the global energy and environmental issue. Herein, a novel photocatalytic system (NiS/Ni3S4 cocatalysts modified mesoporous TiO2) with superior photocatalytic hydrogen evolution capability through the synergistic impact of NiS/Ni3S4 (NiSx) cocatalyst and efficient hole scavenger has been demonstrated. The photocatalytic hydrogen evolution of TiO2-NiSx hybrids with the different content of NiSx and upon different organic hole scavengers was both investigated. The hybrid of TiO2 decorated with 3%(mole ratio of Ni^2+) NiSx cocatalyst in methanol solution showed the optimal photocatalytic hydrogen evolution rate of 981.59 μmol h^-1 g^-1 which was about 20 times higher than that of bare mesoporous TiO2. Our results suggested that the boosted hydrogen production performance is attributed to both the improved photoinduced electrons migration between NiS and Ni3S4 in cocatalyst and the high hole captured efficiency by hole scavengers of methanol.

关键词： NiS/Ni3S4 Cocatalyst Photocatalytic hydrogen evolution Mesoporous TiO2 Hole scavenger