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NiFeRuO_(x)nanosheets on Ni foam as an electrocatalyst for efficient overall alkaline seawater splitting

Frontiers of Chemical Science and Engineering 2023年第11期17卷 1698-1706页

作者： Yu Liu Lin Chen Yong Wang Yuan Dong Liang Zhou Susana ICórdoba de Torresi Kenneth IOzoemena Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing&International School of Materials Science and Engineering&School of Materials Science and Engineering&Shenzhen Research Institute&Laoshan Laboratory Wuhan University of TechnologyWuhan 430070China Instituto de Química Universidade de São Paulo05508-080 São PauloBrazil Molecular Sciences Institute School of ChemistryUniversity of the WitwatersrandJohannesburg 2050South Africa

The electrocatalyst NiFeRuO_(x)/NF,comprised of NiFeRuO_(x)nanosheets grown on Ni foam,was synthesized using a hydrothermal process followed by thermal ***_(x)/NF displays high electrocatalytic activity and stability for overall alkaline seawater splitting:98 mV@10 mA∙cm^(−2)in hydrogen evolution reaction,318 mV@50 mA∙cm^(−2)in oxygen evolution reaction,and a cell voltage of 1.53 V@10 mA∙cm^(−2),as well as 20 h of durability.A solar-driven system containing such a bifunctional NiFeRuO_(x)/NF has an almost 100%Faradaic *** NiFeRuO_(x)coating around Ni foam is an anti-corrosion layer and also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuO_(x)nanosheets Ni foam electrocatalysis overall seawater splitting solar-driven system

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Ultra-Thin Carbon-Doped Bi_(2)WO_(6) Nanosheets for Enhanced Photocatalytic CO_(2) Reduction

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Transactions of Tianjin University 2021年第4期27卷 338-347页

作者： Han Li Junchao Zhang Jiaguo Yu Shaowen Cao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The photocatalytic reduction of CO_(2) is a promising strategy to generate chemical ***,this reaction usually suf-fers from low photoactivity because of insuffi cient light absorption and rapid charge *** engineering has become an eff ective approach to improve the photocatalytic ***,ultra-thin(~4.1 nm)carbon-doped Bi_(2)WO_(6) nanosheets were prepared via hydrothermal treatment followed by *** ultra-thin nanosheet structure of the cata-lyst not only provides more active sites but also shortens the diff usion distance of charge carriers,thereby suppressing charge ***,carbon doping could successfully extend the light absorption range of the catalyst and remarkably promote charge separation,thus inhibiting *** a result,the as-prepared Bi_(2)WO_(6) photocatalyst with ultra-thin nanosheet structure and carbon doping exhibits enhanced photocatalytic CO_(2) reduction performance,which is twice that of pristine ultra-thin Bi_(2)WO_(6) *** study highlights the importance of defect engineering in photocatalytic energy conversion and provides new insights for fabricating effi cient photocatalysts.

关键词： Defect engineering Bi_(2)WO_(6)nanosheet Charge separation Light absorption

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异价离子取代构建高离子电导率的插层结构

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Science Bulletin 2023年第11期68卷 1134-1142,M0004页

作者：孙宗栋梁嘉宁刘开朗冯昕吴宇赵英鹤梁麒吴劲松李会巧翟天佑 State Key Laboratory of Materials Processing and Die&Mould Technology and School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research CenterWuhan University of TechnologyWuhan 430070China

在纳米尺度通道内的离子传输是纳米流体学领域研究的重点.二维(2D)材料的本征层状结构为流体离子提供了稳健的纳米传输通道.为实现流体离子在2D材料薄膜内的高效传输,本文开发了一种新颖的异价离子取代插层策略,通过化学气相输运法直接... 详细信息

在纳米尺度通道内的离子传输是纳米流体学领域研究的重点.二维(2D)材料的本征层状结构为流体离子提供了稳健的纳米传输通道.为实现流体离子在2D材料薄膜内的高效传输,本文开发了一种新颖的异价离子取代插层策略,通过化学气相输运法直接合成多种具有高离子电导结构的单晶.将块体单晶置入水中通过手动摇晃即可获得二维纳米片分散液,组装后的薄膜展现出高的锂离子电导率,优于目前多数关于2D材料薄膜水相锂离子电导率的报道.这种在合成过程中直接构筑离子传输结构的策略与目前已有的先剥离2D材料后对纳米片修饰改性的方法完全不同.因此,这种普适性的异价离子取代插层策略将会为更多高离子电导率的2D材料薄膜的开发提供借鉴与参考.

关键词：离子电导率离子取代纳米片离子传输纳米流体材料薄膜传输通道插层结构

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Chemical cross-linking and mechanically reinforced carbon network constructed by graphene boosts potassium ion storage

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Nano Research 2022年第10期15卷 9019-9025页

作者： Chenxu Wang Ruohan Yu Wen Luo Wencong Feng Yuanhao Shen Nuo Xu Liqiang Mai Department of Physics School of ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology430070 WuhanChina Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China

Carbon-based electrodes of potassium-ion batteries are of great research interest ascribed to their low cost and environmentally friendly ***,traditional carbon materials usually exhibit weak mechanical properties and incomplete crosslinking,resulting in poor stability and electrochemical ***,we report a new strategy for modifying reduced graphene oxide into a uniform few-layer structure through a sol–gel method combined with acid etching *** obtained chemical cross-linking and mechanically reinforced carbon network constructed by graphene(CNCG)demonstrates excellent electrochemical and mechanical *** as a free-standing anode(~7 mg·cm^(−2))for potassium ion battery,the asachieved CNCG delivers a high reversible specific capacity of 317.7 mAh·g^(−1) at a current density of 50 mA·g^(−1) and admirable cycle stability(208.4 mAh·g^(−1) at 50 mA·g^(−1) after 500 cycles).The highly reversible structural stability and fully cross-linked properties during potassiation are revealed by ex-situ *** work provides new ideas for the synthesis of new carbon materials and the development of high-performance electrodes.

关键词： potassium-ion battery graphene electrode chemical cross-linking mechanical property storage mechanism

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Niobium oxyphosphate nanosheet assembled two-dimensional anode material for enhanced lithium storage

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Journal of Energy Chemistry 2021年第2期30卷 268-275,I0009页

作者： Bo Wen Ruiting Guo Xiong Liu Wen Luo Qiu He Chaojiang Niu Jiashen Meng Qi Li Yan Zhao Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070HubeiChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528216GuangdongChina

The development of high-capacity and high-rate anodes has become an attractive endeavor for achieving high energy and power densities in lithium-ion batteries(LIBs).Herein,a new-type anode material of reduced graphene oxide(rGO) supported niobium oxyphosphate(NbOPO_4) nanosheet assembled twodimensional composite material(NbOPO_4/rGO) is firstly fabricated and presented as a promising highperformance LIB anode ***-depth electrochemical analyses and in/ex situ characterizations reveal that the intercalation-conversion reaction takes place during the first discharge process,followed by the reversible redox process between amorphous NbPO_4 and Nb which contributes to the reversible capacity in the subsequent ***,the lithiation-generated Li3 PO_4,behaving as a good lithium ion conductor,facilitates ion *** rGO support further regulates the structural and electron/ion transfer properties of NbOPO_4/rGO composite compared to neat NbOPO_4, resulting in greatly enhanced electrochemical *** a result,NbOPO_4/rGO as a new-type LIB anode material achieves a high capacity of 502.5 mAh g^(-1) after 800 cycles and outstanding rate capability of 308.4 mAh g^(-1) at 8 A g^(-1).This work paves the way for the deep understanding and exploration of phosphate-ba sed high-efficiency anode materials for LIBs.

关键词： 2D nanomaterials Niobium oxyphosphate High-rate anode Lithium storage mechanism Lithiation-induced amorphization

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Uniform Metal Sulfide@N-doped Carbon Nanospheres for Sodium Storage: Universal synthesis Strategy and Superior Performance

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Energy & Environmental materials 2023年第2期6卷 389-396页

作者： Kai Yang Hao Fu Yixue Duan Manxiang Wang Minh Xuan Tran Joong Kee Lee Woochul Yang Guicheng Liu Department of Physics Dongguk UniversitySeoul 04620Korea Shaanxi Key Laboratory of Chemical Additives for Industry Shaanxi University of Science and TechnologyXi’an 710021China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Physics and Electronic Information Yan’an UniversityYan’an 716000China Center for Energy Storage Research Clean Energy InstituteKorea Institute of Science and Technology(KIST)Seoul 02792Korea

Nitrogen-doped carbon-coated transition-metal sulfides(TMS@NCs)have been considered as efficient anodes for sodium-ion ***,the uncontrollable morphology and weak core-shell binding forces significantly limit the sodium storage performance and ***,based on the reversible ring-opening reaction of the epoxy group of the tertiary amino group-rich epoxide cationic polyacrylamide(ECP)at the beginning of hydrothermal process(acidic environment)and the irreversible ring-opening(cross-linking reactions)at the late hydrothermal period(alkaline environment),47 nm-sized ZnS@NCs were prepared via a one-pot hydrothermal *** this process,the covalent bonds formed between the ZnS core and elastic carbon shell significantly improved the mechanical and chemical stabilities of ZnS@*** from the nanosize,fast ion/electron transfer,and high stability,ZnS@NC exhibited a high reversible capacity of 421.9 mAh g^(−1) at a current density of 0.1 A g^(−1) after 1000 cycles and a superior rate capability of 273.8 mAh g^(−1) at a current density of 5 A g^(−1).Moreover,via this universal synthesis strategy,a series of TMS@NCs,such as MoS_(2)@NC,NiS@NC,and CuS@NC were developed with excellent capacity and cyclability.

关键词： anode materials core-shell structure nitrogen-doped carbon ring-opening reaction transition-metal sulfide

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Engineering surface framework TiO6 single sites for unprecedented deep oxidative desulfurization

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National Science Review 2024年第5期11卷 303-314页

作者： Shen Yu Zhan Liu Jia-Min Lyu Chun-Mu Guo Xiao-Yu Yang Peng Jiang Yi-Long Wang Zhi-Yi Hu Ming-Hui Sun Yu Li Li-Hua Chen Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Nanostructure Research Center Wuhan University of Technology School of Chemistry Chemical Engineering and Life ScienceWuhan University of Technology Laboratory of Inorganic Materials Chemistry University of Namur

Catalytic oxidative desulfurization（ODS） using titanium silicate catalysts has emerged as an efficient technique for the complete removal of organosulfur compounds from automotive fuels. However, the precise control of highly accessible and stable-framework Ti active sites remains highly challenging. Here we reveal for the first time by using density functional theory calculations that framework hexa-coordinated Ti（TiO6） species of mesoporous titanium silicates are the most active sites for ODS and lead to a lower-energy pathway of ODS. A novel method to achieve highly accessible and homogeneously distributed framework TiO6active single sites at the mesoporous surface has been developed. Such surface framework TiO6species exhibit an exceptional ODS performance. A removal of 920 ppm of benzothiophene is achieved at60°C in 60 min, which is 1.67 times that of the best catalyst reported so far. For bulky molecules such as4,6-dimethyldibenzothiophene（DMDBT）, it takes only 3 min to remove 500 ppm of DMDBT at 60°C with our catalyst, which is five times faster than that with the current best catalyst. Such a catalyst can be easily upscaled and could be used for concrete industrial application in the ODS of bulky organosulfur compounds with minimized energy consumption and high reaction efficiency.

关键词： electrostatic interactions framework hexa-coordinated Ti site oxidative desulfurization mesoporous materials self-assembly

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Visualization of charge carriers in photocatalysts

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国家科学评论（英文版） 2023年第9期10卷 116-118页

作者： Si-Ming Wu Markus Antonietti Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Laoshan Laboratory Wuhan University of TechnologyChina Department of Colloid Chemistry Max Planck Institute of Colloids and InterfacesGermany

Semiconductors can generate excited charge carriers for photo-or electro-chemical reactions such as water splitting for H2 ***,the dynamic charge-transfer process has been directly observed to reveal the photocatalyti...

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Sodium vanadium oxides:From nanostructured design to high-performance energy storage materials

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Journal of materials Science & technology 2022年第26期121卷 80-92页

作者： Yifan Dong Shuolei Deng Ziting Ma Ge Yin Changgang Li Xunlong Yuan Huiyun Tan Jing Pan Liqiang Mai Fan Xia Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Material Science and ChemistryChina University of GeosciencesWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

Developing high-capacity and low-cost cathode materials for metal-ion rechargeable batteries is the mainstream trend and is also the key to providing breakthroughs in making high-energy rechargeable *** has a variety of valence states and can form a variety of vanadate *** a typical positive electrode material,vanadate has abundant ion adsorption sites,a unique“pillar”framework,and a typical layered ***,it has the advantages of high specific capacity and excellent rate performance,possessing the prospect of being a large-capacity energy storage *** this review,we focus on applications of sodium vanadium oxides(NVO)in electrical energy storage(EES)devices and summarize sodium vanadate materials from three aspects,including crystal structure,electrochemical performance,and energy storage *** recent progress of NVO-based highperformance energy storage materials along with nanostructured design strategies was provided and discussed as *** review is intended to serve as general guidance for researchers to develop desirable sodium vanadate materials.

关键词： Sodium vanadate Nanostructured materials Rechargeable metal-ion batteries Energy storage mechanism

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Low-coordination water Prussian white as cathode for high-performance potassium-ion batteries

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Chinese Chemical Letters 2021年第8期32卷 2433-2437页

作者： Yang Xia Wei Jin Yanyuan Qi Hang Li Zelang Jian Wen Chen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

Prussian whites(PWs) with a three-dimensional framework can accommodate the insertion and extraction of ions with large radius,which have been widely used in potassium ion ***,PWs show the poor cycling performance and inferior rate ability because of high coordinated *** this work,PWs with different water content were synthesized via a coprecipitation method by controlling the reaction *** sample with low-coordination water prohibits the best electrochemical *** shows a high capacity of 120.5 mAh/g at 100 mA/g for potassium-ion batteries(KIBs).It also exhibits a good rate performance,displaying a capacity of 73.2 mAh/g at 500 mA/g.

关键词： Prussian white Potassium ion batteries Low-coordinated water Cathode Reaction temperature

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