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Nano-Micro Letters 2025年第1期17卷 135-159页

作者： Zhengqing Fan Ruimin Li Xin Zhang Wanyu Zhao Zhenghui Pan Xiaowei Yang School of Chemistry and Chemical engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Chemistry and Chemical engineering Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China School of Materials Science and engineering Tongji UniversityShanghai 201804People’s Republic of China

Rechargeable magnesium batteries(RMBs)have been considered a promising“post lithium-ion battery”system to meet the rapidly increasing demand of the emerging electric vehicle and grid energy storage ***,the sluggish diffusion kinetics of bivalent Mg^(2+)in the host material,related to the strong Coulomb effect between Mg^(2+)and host anion lattices,hinders their further development toward practical *** engineering,regarded as an effective strategy to break through the slow migration puzzle,has been validated in various cathode materials for *** this review,we first thoroughly understand the intrinsic mechanism of Mg^(2+)diffusion in cathode materials,from which the key factors affecting ion diffusion are further ***,the positive effects of purposely introduced defects,including vacancy and doping,and the corresponding strategies for introducing various defects are *** applications of defect engineering in cathode materials for RMBs with advanced electrochemical properties are also ***,the existing challenges and future perspectives of defect engineering in cathode materials for the overall high-performance RMBs are described.

关键词： Rechargeable magnesium battery Sluggish diffusion kinetic defect engineering Cathode materials Ion migration

defect engineering with Rational Dopants Modulation for High‑Temperature Energy Harvesting in Lead‑Free Piezoceramics

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Nano-Micro Letters 2025年第3期17卷 87-101页

作者： Kaibiao Xi Jianzhe Guo Mupeng Zheng Mankang Zhu Yudong Hou Key Laboratory of Advanced Functional Materials Ministry of EducationCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124People’s Republic of China

High temperature piezoelectric energy harvester(HTPEH)is an important solution to replace chemical battery to achieve independent power supply of HT wireless ***,simultaneously excellent performances,including high figure of merit(FOM),insulation resistivity(ρ)and depolarization temperature(Td)are indispensable but hard to achieve in lead-free piezoceramics,especially operating at 250°C has not been reported ***,well-balanced performances are achieved in BiFeO3–BaTiO3 ceramics via innovative defect engineering with respect to delicate manganese *** to the synergistic effect of enhancing electrostrictive coefficient by polarization configuration optimization,regulating iron ion oxidation state by high valence manganese ion and stabilizing domain orientation by defect dipole,comprehensive excellent electrical performances(Td=340°C,ρ250°C>10^(7)Ωcm and FOM_(250°C)=4905×10^(–15)m^(2)N^(−1))are realized at the solid solubility limit of manganese *** HT-PEHs assembled using the rationally designed piezoceramic can allow for fast charging of commercial electrolytic capacitor at 250°C with high energy conversion efficiency(η=11.43%).These characteristics demonstrate that defect engineering tailored BF-BT can satisfy high-end HT-PEHs requirements,paving a new way in developing selfpowered wireless sensors working in HT environments.

关键词： Lead-free piezoceramic defect engineering Dopants modulation High-temperature Piezoelectric energy harvester

defect engineering in transition-metal(Fe,Co,andNi)-based electrocatalysts for water splitting

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Carbon Energy 2024年第6期6卷 165-199页

作者： Kaili Wu Chaojie Lyu Jiarun Cheng Weifan Ding Jiwen Wu Qian Wang Woon-Ming Lau Jinlong Zheng Beijing Advanced Innovation Center for Materials Genome engineering University of Science and Technology BeijingBeijingChina School of Chemistry and Chemical engineering Linyi UniversityLinyiChina Institute for Advanced Materials and Technology University of Science and Technology BeijingBeijingChina Shunde Innovation School University of Science and Technology BeijingFoshanChina

Electrocatalytic water splitting seems to be an efficient strategy to deal with increasingly serious environmental problems and energy crises but still suffers from the lack of stable and efficient *** practical electrocatalysts by introducing defect engineering,such as hybrid structure,surface vacancies,functional modification,and structural distortions,is proven to be a dependable solution for fabricating electrocatalysts with high catalytic activities,robust stability,and good *** review is an overview of some relevant reports about the effects of defect engineering on the electrocatalytic water splitting performance of *** detail,the types of defects,the preparation and characterization methods,and catalytic performances of electrocatalysts are presented,emphasizing the effects of the introduced defects on the electronic structures of electrocatalysts and the optimization of the intermediates'adsorption energy throughout the ***,the existing challenges and personal perspectives of possible strategies for enhancing the catalytic performances of electrocatalysts are *** in-depth understanding of the effects of defect engineering on the catalytic performance of electrocatalysts will light the way to design high-efficiency electrocatalysts for water splitting and other possible applications.

关键词： defect engineering electrocatalytic water splitting element doping interfacial engineering vacancy

defect engineering of hierarchical porous carbon microspheres for potassium-ion storage

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Rare Metals 2022年第10期41卷 3446-3455页

作者： Xin-Fei Wu Zi-Jian Li Jin-Xiao Liu Wen Luo Jean-Jacques Gaumet Li-Qiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan430070China Department of Physics School of ScienceWuhan University of TechnologyWuhan430070China Laboratoire de Chimie et Physique:Approche Multi-échelles des Milieux Complexes(LCP-A2MC)Institut Jean BarriolUniversitéde LorraineMetz57070France

Owing to adjustable microstructure and stable physiochemical properties,carbon-based materials are regarded as promising materials as anodes for potassium-ion batteries(PlBs).Building amorphous structure and introducing defects are favorable methods to generate active sites and improve the electrochemical performances of carbon-based *** this work,we develop a facile carbonization method to prepare sulfur-doped amorphous carbon microspheres with hierarchical structure and modulated defects concentration(S-CM-700) for potassium *** from the special microstructure,S-CM-700 exhibits the optimal performance and obtains high reversible capacity of 199.6 mAh·g^(-1) at 100 mA·g^(-1),excellent rate property and prominent durability(0.0055%capacity decay per cycle during 1800 cycles).Kinetics analysis and electrochemical characterization are carried out to reveal that the potassium storage could be boosted by regulating the defect level,layer spacing and the content of *** work provides a general synthesis approach to prepare sustainable carbon anodes for advanced PlBs.

关键词： Potassium-ion battery(PIB) defect engineering Amorphous carbon Hierarchical structure Anode

defect engineering on constructing surface active sites in catalysts for environment and energy applications

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Frontiers of Chemical Science and engineering 2024年第7期18卷 11-32页

作者： Yawen Cai Baowei Hu Xiangke Wang School of Life Science Shaoxing UniversityShaoxing 312000China College of Environmental Science and engineering North China Electric Power UniversityBeijing 102206China

The precise engineering of surface active sites is deemed as an efficient protocol for regulating surfaces and catalytic properties of *** engineering is the most feasible option to modulate the surface active sites of *** specific active sites on the catalyst allows precise modulation of its electronic structure and physicochemical ***,we outlined the engineering of several types of defects,including vacancy defects,void defects,dopant-related defects,and defect-based single atomic *** overview of progress in fabricating structural defects on catalysts via de novo synthesis or post-synthetic modification was ***,the applications of the well-designed defective catalysts in energy conversion and environmental remediation were carefully ***,current challenges in the precise construction of active defect sites on the catalyst and future perspectives for the development directions of precisely controlled synthesis of defective catalysts were also proposed.

关键词： defect engineering vacancy void defects doping single atomic sites

defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties

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Journal of Advanced Ceramics 2022年第1期11卷 184-195页

作者： Xinjian WANG Yu HUAN Yixuan ZHU Peng ZHANG Wenlong YANG Peng LI Tao WEI Longtu LI Xiaohui WANG School of Material Science and engineering University of JinanJinan 250022China School of Materials Science and engineering Liaocheng UniversityLiaocheng 252000China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

The intrinsic conduction mechanism and optimal sintering atmosphere of(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)(BCZT)ceramics were regulated by Mn-doping element in this *** Hall and impedance analysis,the undoped BCZT ceramics exhibit a typical n-type conduction mechanism,and the electron concentration decreases with the increasing oxygen partial ***,the undoped ceramics exhibit best electrical properties(piezoelectrical constant<733=585 pC·N^(-1),electro-mechanical coupling factor k_(p)=56%)in O_(2).A handful of Mn-doping element would transfer the conduction mechanism from n-type into *** the hole concentration reduces with the decreasing oxygen partial pressure for Mn-doped BCZT ***,the Mn-doped ceramics sintered in N_(2)have the highest insulation resistance and best piezoelectric properties(d_(33)=505 pC·N^(-1),k_(p)=50%).The experimental results demonstrate that the Mn-doping element can effectively adjust the intrinsic conduction mechanism and then predict the optimal atmosphere.

关键词： BCZT ceramics Mn-doping different sintering atmosphere p/n-type conduction mechanism defect engineering

defect engineering for advanced electrocatalytic conversion of nitrogen-containing molecules

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Science China Chemistry 2023年第4期66卷 1052-1072页

作者： Dongdong Wang Chen Chen Shuangyin Wang State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha 410082China

Electrocatalytic conversion of nitrogen-containing molecules into valuable chemicals is a promising strategy to alleviate anthropogenic imbalances in the global nitrogen cycle,but developing efficient electrocatalysts remains a formidable *** recent years,the exploration of high-performance electrocatalysts has achieved significant progress by resorting to defect engineering strategy,which encouraged the researchers to understand the relationship between defects in catalysts and electrocatalytic *** this review,recent advances in defect engineering for advanced electrocatalytic conversion of nitrogen-containing molecules are systematically summarized,with special focus on electrocatalytic nitrogen oxidation and reduction,electrocatalytic nitric oxide oxidation and reduction,electrocatalytic nitrate reduction,and the construction of C–N *** can effectively tune the electronic structure of catalysts,facilitate species diffusion,and provide more adsorption/active sites for reaction intermediates,thereby enhancing the electrocatalytic ***,objective issues and future trends for optimizing electrocatalyst by defect engineering are proposed,which will contribute to the further development of advanced electrocatalytic conversion of nitrogen-containing molecules.

关键词： defect engineering electrocatalysis nitrogen-containing molecules C-N bond electrosynthesis

defect engineering and Ni promoter synergistically accelerating electron transfer to Ru^(0) sites in UiO-66(Ce) for dicyclopentadiene hydrogenation under mild condition

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Nano Research 2024年第11期17卷 9550-9563页

作者： Rushuo Li Tao Ban Danfeng Zhao Jing Lin Zhiyuan Liu Linmeng Wang Xiubing Huang Zhiping Tao Ge Wang Beijing Advanced Innovation Center for Materials Genome engineering Beijing Key Laboratory of Function Materials for Molecule and Structure Construction School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Sinopec Research Institute of Petroleum Processing Co. Ltd. Beijing 100083 China

Olefin hydrogenation under mild condition is crucial and challenging for industrial applications. Herein, defective UiO-66(Ce) was constructed by using cyanuric acid as the molecular etching “scissors” and further to synthesize heterogeneous catalyst with highly dispersed RuNi nanoparticles (Ru1Ni1.5@UiO-66(Ce)-12 h). The construction of Ce-O-Ru/Ni heterogeneous interfaces and Ni–Ru bonds provide electron transfer channels from Ce-oxo clusters and Ni species to Ru species. Furthermore, the microenvironment and electronic structure of Ru0 active sites were synergistically regulated by adjusting the content of metal-organic frameworks (MOFs) defects and Ni promoter, thereby enhancing the adsorption and activation ability of H–H and C=C bonds. Therefore, Ru1Ni1.5@UiO-66(Ce)-12 h achieved dicyclopentadiene saturated hydrogenation (100% conversion) to tetrahydrodicyclopentadiene (∼ 100% selectivity) under mild condition (35℃, 1 MPa) with only 25 min. Meanwhile, the sample exhibited excellent structural stability after 6 cycles test. This study provides a promising strategy for the rational design of remarkable noble metal-based catalysts for practical applications.

关键词： metal-organic frameworks defect engineering Ni promoter electron-rich Ru^(0)active sites dicyclopentadiene hydrogenation

defect engineering of ternary Cu-In-Se quantum dots for boosting photoelectrochemical hydrogen generation

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Carbon Energy 2023年第12期5卷 215-228页

作者： Shi Li Sung-Mok Jung Wookjin Chung Joo-Won Seo Hwapyong Kim Soo Ik Park Hyo Cheol Lee Ji Su Han Seung Beom Ha In Young Kim Su-Il In Jae-Yup Kim Jiwoong Yang Department of Energy Science and engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of Chemical engineering Dankook UniversityYonginRepublic of Korea Department of Chemistry and Nanoscience College of Natural ScienceEwha Womans UniversitySeoulRepublic of Korea Energy Science and engineering Research Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea

Heavy-metal-free ternary Cu–In–Se quantum dots(CISe QDs)are promising for solar fuel production because of their low toxicity,tunable band gap,and high light absorption *** defects significantly affect the photophysical properties of QDs,the influence on photoelectrochemical hydrogen production is not well ***,we present the defect engineering of CISe QDs for efficient solar-energy *** acid–base reactions between metal halide–oleylamine complexes and oleylammonium selenocarbamate are modulated to achieve CISe QDs with the controlled amount of Cu vacancies without changing their *** them,CISe QDs with In/Cu=1.55 show the most outstanding photoelectrochemical hydrogen generation with excellent photocurrent density of up to 10.7 mA cm-2(at 0.6 VRHE),attributed to the suitable electronic band structures and enhanced carrier concentrations/lifetimes of the *** proposed method,which can effectively control the defects in heavy-metal-free ternary QDs,offers a deeper understanding of the effects of the defects and provides a practical approach to enhance photoelectrochemical hydrogen generation.

关键词： copper-indium-selenide defect engineering photoelectrochemical hydrogen generation quantum dots solar hydrogen

defect engineering endows NiTi stents with photothermal-enhanced catalytic activity for high-efficiency tumor therapy

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Journal of Materials Science & Technology 2023年第24期155卷 227-237页

作者： Haifeng Zhang Min Xing Wenhao Qian Shun Xing Jiajun Qiu Xuanyong Liu School of Chemistry and Materials Science Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences 1 Sub-lane Xiangshan Hangzhou 310024 China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China Shanghai Xuhui District Dental Center Shanghai 200032 China Center of Materials Science and Optoelectronics engineering University of Chinese Academy of Sciences Beijing 100049 China

NiTi stents are widely used in clinic for palliative care to relieve obstruction caused by Gastrointestinal(GI)cancers,which have high morbidity and mortality ***,tumor invasion and tumor overgrowth around the stent after surgery may lead to re-obstruction of the ***,it is urgent to endow NiTi stents with excellent tumor suppressive ability and good *** this study,Ce-BTC was firstly prepared on the surface of NiTi pretreated by alkaline heat,followed by pyrolysis in Ar atmosphere at 450℃.Then,a composite coating consisting of defective cerium oxide and black Ni-Ti hydroxide/oxide was constructed on NiTi surface,which exhibited tumor microenvironment-response and hyperthermia-enhanced catalytic *** near-infrared light irradiation,the photothermal performance of black Ni-Ti hydroxide/oxide and hyperthermia-enhanced catalytic activity of defective cerium oxide can achieve a synergistic effect of photothermal therapy and tumor catalytic ***,defective cerium oxide can sustainably inhibit the proliferation of residual tumor cells by the generation of reactive oxygen ***,the composite coating has no obvious cytotoxicity to normal *** work provides a new insight for the preparation of stimulus-responsive antitumor stents for palliative treatment of gastrointestinal cancer.

关键词： defect engineering NiTi Photothermal Nanozyme Tumor therapy