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heterostructure:application of absorption-catalytic center in lithium-sulfur batteries

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Rare Metals 2024年第4期43卷 1461-1487页

作者： Fei Wang Chun-Man Yang Yong-Qi Wang Dan You Wen-Hao Yang Rong-Wei Huang Ji-Yue Hou Qian Wang Ying-Jie Zhang Ying Wang Yue-Jing Zeng Yi-Yong Zhang Xue Li National Local Joint Engineering Research Center for Lithium-Ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Batteries Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming650093China College of Electrical Information Engineering Panzhihua UniversityPanzhihua617000China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

Due to the high theoretical specific capacity(1675 mAh·g^(-1)),low cost,and high safety of the sulfur cathodes,they are expected to be one of the most promising rivals for a new generation of energy storage ***,the shuttle effect,low conductivity of sulfur and its discharge products,volume expansion,and other factors hinder the commercialization of lithium-sulfur batteries(LSBs).The development of sulfur-fixing materials and the design of multifunctional materials to enhance the electrochemical performance of LSBs have been the main research priorities in recent *** of the advantages of high conductivity,built-in electric field,and good synergism,more and more researchers have employed heterostructure into sulfur-fixing materials to enhance the catalytic and absorption ability for *** this review,the principle of heterostructure and the mechanism of enhancing the performance of lithium-sulfur batteries are *** applications of heterostructure in cathode and interlayer of LSBs in the latest years are ***,the cutting-edge troubles and possibilities of heterostructures in LSBs are briefly presented.

关键词： Lithium-sulfur batteries(LSBs) heterostructure Built-in electric field Catalytic Absorption

heterostructure of Ta_(3)N_(5) nanorods and CaTaO_(2)N nanosheets fabricated using a precursor template to boost water splitting under visible light

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Journal of Energy Chemistry 2022年第4期31卷 27-33页

作者： Yanpei Luo Hao Li Yaling Luo Zheng Li Yu Qi Fuxiang Zhang Can Li State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyThe Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)Dalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Fabrication of heterostructure composed of one-dimensional(1D)and 2D semiconductors has inspired extensive interest in promoting photogenerated charge separation as well as performances of solar fuel production,but it is still challenging for(oxy)nitride photocatalysts due to their uncontrollable ammonia thermal preparative *** this work,we report a synthesis on heterostructure of Ta_(3)N_(5)nanorods and CaTaO_(2)N(CTON)nanosheets(denoted as Ta_(3)N_(5)/CTON)by directly nitriding a 2D Dion-Jacobson(DJ)type of perovskite KCa_(2)Ta_(3)O_(10)(KCTO)precursor under the assistance of K_(2)CO_(3)*** is demonstrated that the 2D morphology of KCTO can be well inherited to get 2D CTON,and the Ta-rich(nonstoichiometric ratio of Ca:Ta compared to CTON)feature of the KCTO as well as the easy evaporation of K species results in the formation of 1D Ta_(3)N_(5)***,the formation of intermediate species K_(2)Ca_(2)Ta_(3)O_(9)N owning similar crystal lattice as Ta_(3)N_(5)was detected and deduced to be responsible for the generation of Ta_(3)N_(5)nanorods and observation of intimate interface between CTON and Ta_(3)N_(5).Benefitting from the formation of special 1D/2D type-II heterostructure,obviously promoted charge separation as well as photocatalytic water splitting performance can be *** discussion demonstrates the generality of the hard-template preparative strategy developed *** our knowledge,this should be the first fabrication of 1D/2D heterostructure for the(oxy)nitride semiconductors,and the developed hard-template strategy may provide an alternative way of fabricating heterostructures of other semiconductors prepared at high temperature.

关键词： Nitride heterostructure Two dimensional Photocatalysis Water splitting

High responsivity and near-infrared photodetector based on graphene/MoSe_2 heterostructure

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Chinese Optics Letters 2019年第2期17卷 7-11页

作者： Beiyun Liu Congya You Chen Zhao Gaoliang Shen Yawei Liu Yufo Li Hui Yan Yongzhe Zhang Key Laboratory for Advanced Functional Materials of the Ministry of Education College of Materials Science and Engineering Beijing University of Technology

Graphene has attracted great interest in optoelectronics, owing to its high carrier mobility and broadband absorption. However, a graphene photodetector exhibits low photoresponsivity because of its weak light absorption. In this work, we designed a graphene/MoSe_2 heterostructure photodetector, which exhibits photoresponse ranging from visible to near infrared and an ultrahigh photoresponsivity up to 1.3 × 104 A·W^(-1) at 550 nm. The electron–hole pairs are excited in a few-layered MoSe2 and separated by the built-in electric field. A large number of electrons shift to graphene, while the holes remain in the MoSe_2, which creates a photogating effect.

关键词： High responsivity near-infrared MoSe2 heterostructure

heterostructure Ag@WO3-x Composites with High Selectivity for Breaking Azo-bond

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Chemical Research in Chinese Universities 2018年第4期34卷 517-522页

作者： FANG Zhenxing CHEN Yan WANG Boran JIAO Shihui PANG Guangsheng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

The heterostructure Ag@WO3-x（x=0.1 or 1） composites with high selectivity for breaking azo-bond were obtained by in situ reduction of Ag2WO4. The crystal structure and morphology of Ag@WO3-x were characterized by X-ray powder diffraction（XRD）, scanning electron microscope（SEM） and transmission electron microscope（TEM）. The residue solution of methyl orange（MO） after degradation was tested by gas chromatograph mass spectrometer （GCMS） to analyze the exact components. The results indicate that the products after degradation are N,N-dimethylaniline, N,N-dimethyl-p-phenylenediamine and sulfanilic acid. This is caused by specific breaking of azo-bond in MO. The azo-bond breaking of MO by Ag@WO3-x could occur in dark without any light illumination. Therefore, we proposed a possible mechanism for this azo-bond breaking reaction based on the reaction condition and results.

关键词： heterostructure In situ reduction Azo-bond

heterostructure VO_(2)@VS_(2) tailored by one-step hydrothermal synthesis for stable and highly efficient Zn-ion storage

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Materials Futures 2024年第4期3卷 171-180页

作者： Enyan Zhao Kesheng Gao Xuan Luo Lin Li Jinkui Zhao Hongliang Li College of Materials Science and Engineering Qingdao UniversityQingdao 266071People’s Republic of China Songshan Lake Materials Laboratory Dongguan 523808People’s Republic of China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China School of Physical Sciences Great Bay UniversityDongguan 523808People’s Republic of China

The increasing demand for advanced energy storage solutions has driven extensive research into Zn-ion batteries due to their safety,cost-effectiveness,and environmental *** study presents a synthesis and evaluation of VO_(2)@VS_(2) hollow nanospheres as a novel cathode material for Zn-ion *** VO_(2)@VS_(2) composite,synthesized via a one-step hydrothermal method,demonstrates a significant improvement in electrochemical *** material exhibits a reversible capacity of 468 mAh g^(-1) at 0.1 A g^(-1) and maintains a high capacity of 237 mAh g^(-1) at 1.0 A g^(-1) over 1000 cycles with a retention rate of 85%.Electrochemical analyses reveal enhanced charge transfer and Zn-ion storage,attributed to the synergistic effect and built-in electric field of the VO2 and VS2 ***,the composite shows superior electrochemical kinetics,facilitating rapid ion transport and charge ***-situ Raman analysis confirms the reversible Zn-ion storage mechanism,further validating the composite’s structural stability during *** functional theory calculations further support these findings,indicating the composite’s potential for high-rate capability and long-term cycling *** research highlights the promise of VO_(2)@VS_(2) hollow nanospheres in advancing the performance of aqueous Zn-ion batteries.

关键词： Zn-ion batteries vanadium-based cathode hollow nanospheres heterostructure pseudocapacitive

Strain-tunable electronic and optical properties of h-BN/BC_(3)heterostructure with enhanced electron mobility

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Chinese Physics B 2021年第7期30卷 425-432页

作者： Zhao-Yong Jiao Yi-Ran Wang Yong-Liang Guo Shu-Hong Ma School of Physics Henan Normal UniversityXinxiang 453007China School of Science Henan Institute of TechnologyXinxiang 453003China

By using first-principles calculation,we study the properties of h-BN/BC_(3)heterostructure and the effects of external electric fields and strains on its electronic and optical *** is found that the semiconducting h-BN/BC_(3)has good dynamical stability and ultrahigh stiffness,enhanced electron mobility,and well-preserved electronic band structure as the BC_(3)***,its electronic band structure is slightly modified by an external electric *** contrast,applying an external strain can mildly modulate the electronic band structure of h-BN/BC_(3)and the optical property exhibits an apparent redshift under a compressive strain relative to the pristine *** findings show that the h-BN/BC_(3)hybrid can be designed as optoelectronic device with moderately strain-tunable electronic and optical properties.

关键词： heterostructure electronic and optical properties first-principles calculation

One dimensional nickel phosphide polymorphic heterostructure as carbon-free functional support loading single-atom iridium for promoted electrocatalytic water oxidation

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Journal of Energy Chemistry 2023年第4期79卷 410-417页

作者： Rashid Mehmood Guifa Long Wenjun Fan Mingrun Li Lifang Liu Fuxiang Zhang StateKey Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian 116023LiaoningChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China GuangxiKey Laboratory of Chemistry and Engineering of Forest Products School of Chemistry and Chemical EngineeringGuangxi Minzu UniversityNanning 530008GuangxiChina

Although conducting materials such as carbon nanotube and carbon fiber paper(CFP)have been extensively employed as support of electrocatalytic active sites,most of them are of poor catalytic functionality by themselves and undesirable stability during strong acid/alkaline environments or oxidation *** we report a novel one-dimensional(1D)nickel phosphide polymorphic heterostructure(denoted as NPPH)to work as one effective carbon-free functional support for loading of single-atom Ir water oxidation ***,the NPPH composed of both Ni12P5and Ni2P phases is not only active for robust alkaline water oxidation but also is of good stability and hydrophilicity for favorable loading of single-atom dispersed *** NPPH supported single-atom Ir electrocatalyst(Ir/NPPH)is found to exhibit remarkably superior water oxidation activity with respect to the NPPH itself or CFP supported single-atom Ir catalyst(Ir/CFP),demonstrating the synergetic promotion effect between NPPH and single-atom Ir ***,the NPPH supported single-atom Ir catalyst can bear alkaline water oxidation for over 120 h at current density of 50 mA cm^(-2).The NPPH developed here is expected as functional support to composite with other water oxidation catalysts,as may be an alternative strategy of developing highly efficient carbon-free electrocatalysts.

关键词： Oxygen evolution reaction Single atom catalyst Nickel phosphide heterostructure One-dimensional

Synergism and anion-cation dual chemical substitution in heterostructure sprouted on MXene enable high-efficiency and stable overall water splitting

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Journal of Materials Science & Technology 2023年第16期147卷 207-216页

作者： Zepeng Lv Jinshuai Fei Yang You Xuewei Lv Qian Li Jie Dang College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

The exploration of novel,super-potent and low-cost electrocatalysts for water splitting has always been the kernel in the field of renewable ***,exfoliated Ti_(3)C_(2)T_(x) MXenes work as a substrate to vertically grow polypore N,Ni-Co2P nanoarrays(N,Ni-Co2P@TC)through an in situ interface-growth strategy and subsequent phosphorization and *** well-defined heterointerfaces with positive and negative ions co-modulation as coupled hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalysts for efficient overall water splitting are investigated,which possesses excellent durability even at a large current density(±500 mA cm^(-2)).For HER,suitable H_(2)O∗and H∗absorption energies and accelerated electronic transmission make N,Ni-Co2P@TC display a low overpotential of 27 mV at-10 mA cm^(-2) and Tafel slope of 38 mV dec^(–1) in 1 mol/L *** OER,the synergy of N,Ni-Co2P@TC with selfreconfiguration can give enhanced activity with a low overpotential of 232 mV at 10 mA cm^(-2) and a Tafel slope of 57 mV dec^(–1).Additionally,the excellent bifunctional activity allows easily combining for efficient overall water splitting with a low driving voltage(1.51 V)at 10 mA cm^(-2),and the electrolyzer can be driven by a 1.5 V AAA battery.

关键词： Synergism Chemical substitution heterostructure Overall water splitting MXene

Application of in situ/operando characterization techniques in heterostructure catalysts toward water electrolysis

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Nano Research 2023年第2期16卷 1984-1991页

作者： Wanyi Liao Shanshan Wang Hong Su Yan Zhang Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

The key to achieving the breakthrough of hydrogen energy from marginal energy sources in large scale applications lies in the development and design of efficient electrocatalysts for the electrochemical oxidation and reduction of *** unique heterostructure endows the catalyst with a mass of functional interfaces that are decisive for the enhancement of catalyst activity,stability,and reaction *** some cutting-edge reviews have focused on the synthesis strategies,constitution,and applications of heterostructure catalysts,the field still lacks a detailed discussion of the actual reaction processes occurring at the interface,which is detrimental to the understanding of the true catalytic *** on advanced in situ/operando characterization techniques to understand the working mechanism of heterostructure catalysts is essential for rational design of advanced *** this review,we first present the advantages of heterostructure catalysts applied to electrolyzing ***,the application of in situ/operando techniques in probing three aspects of heterostructure catalyst surface reconstruction,reaction mechanism,and the role of each component is highlighted with classical case ***,the current challenges and prospects for the design of heterostructure electrocatalysts are discussed in detail.

关键词： in situ/operando characterization heterostructure reconfiguration reaction mechanism electrochemical water splitting