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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

Optimizing energy harvesting performance by tailoring ferroelectric/relaxor behavior in KNN-based piezoceramics

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Journal of Advanced Ceramics 2022年第6期11卷 935-944页

作者： Yu HUAN Xinjian WANG Wenyu YANG Limin HOU mupeng zheng Tao WEI Xiaohui WANG School of Materials Science and Engineering University of JinanJinan 250022China Key Laboratory of Advanced Functional Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Piezoelectric energy harvesters(PEHs)fabricated using piezoceramics could convert directly the mechanical vibration energy in the environment into electrical *** high piezoelectric charge coefficient(d_(33))and large piezoelectric voltage coefficient(g_(33))are key factors for the high-performance ***,high d_(33)and large g_(33)are difficult to simultaneously achieve with respect to g_(33)=d_(33)/(e_(0)e_(r))and d_(33)=2Qe_(0)e_(r)P_(r).Herein,the energy harvesting performance is optimized by tailoring the CaZrO_(3)content in(0.964−x)(K_(0.52)Na_(0.48))(Nb_(0.96)Sb_(0.04))O_(3)-0.036(Bi_(0.5)Na_(0.5))ZrO_(3)-xCaZrO_(3)***,the doping CaZrO_(3)could enhance the dielectric relaxation due to the compositional fluctuation and structural disordering,and thus reduce the domain size to~30 nm for x=0.006 *** nanodomains switch easily to external electric field,resulting in large ***,the rhombohedral-orthorhombic-tetragonal phases coexist in x=0.006 sample,which reduces the polarization anisotropy and thus improves the piezoelectric *** multiphase coexistence structures and miniaturized domains contribute to the excellent piezoelectric properties of d_(33)(354 pC/N).Furthermore,the dielectric relative permittivity(ε_(r))reduces monotonously as the CaZrO_(3)content increases due to the relatively low ion polarizability of Ca^(2+)and Zr^(4+).As a result,the optimized energy conversion coefficient(d_(33)×g_(33),5508×10^(−15)m^(2)/N)is achieved for x=0.006 *** importantly,the assembled PEH with the optimal specimen shows the excellent output power(~48 mW)and lights up 45 red commercial light-emitting diodes(LEDs).This work demonstrates that tailoring ferroelectric/relaxor behavior in(K,Na)NbO_(3)-based piezoelectric ceramics could effectively enhance the electrical output of PEHs.

关键词： piezoelectric energy harvesters(PEHs) potassium sodium niobate(KNN) relaxor ferroelectric miniaturized domains multiphase coexistence

Enhanced electrical resistivity and mechanical properties in BCTZ-based composite ceramic

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Journal of Advanced Dielectrics 2019年第5期9卷 42-48页

作者： Xiaodong Yan mupeng zheng Mankang Zhu Yudong Hou Key Laboratory of Advanced Functional Materials Education Ministry of China College of Materials Science and Engineering Beijing University of Technology Beijing 100124 P.R.China

Environmental and human health concerns about lead toxicity have prompted the development of lead-free *** them,(Ba_(0.85)Ca_(0.15))(Zr_(0.1)Ti_(0.9))O_(3)(BCTZ)with excellent piezoelectric properties has the most potential and attracts extensive ***,lack of concern toward electrical resistivity and mechanical properties has greatly hindered its practical ***,we report the achievement of enhanced insulation characteristics(grain electrical resistivity increased by one order of magnitude)and superior mechanical properties(Vickers hardness value increased by 40%)in Al_(2)O_(3)-added BCTZ composite *** improvement can be attributed to specific composite microstructure,where the nonferroelectric second phase dispersed in the grain interior and grain boundary of BCTZ matrix results in blocking effect on the electric current paths as well as propagation of *** findings will pave a new way for the practical application of BCTZ ceramics.

关键词： Lead-free perovskite composite ceramic electrical resistivity mechanical properties

Polymer-/Ceramic-based Dielectric Composites for Energy Storage and Conversion

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Energy & Environmental Materials 2022年第2期5卷 486-514页

作者： Honghui Wu Fangping Zhuo Huimin Qiao Lalitha Kodumudi Venkataraman mupeng zheng Shuize Wang He Huang Bo Li Xinping Mao Qiaobao Zhang Beijing Advanced Innovation Center for Materials Genome Engineering Collaborative Innovation Center of Steel TechnologyUniversity of Science and Technology BeijingBeijing 100083China Department of Materials and Earth Sciences Technical University of DarmstadtDarmstadt 64287Germany School of Advanced Materials and Engineering Sungkyunkwan University(SKKU)Suwon 16419Korea Key Laboratory of Advanced Functional Materials Ministry of EducationFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China

Dielectric composites boost the family of energy storage and conversion materials as they can take full advantage of both the matrix and *** review aims at summarizing the recent progress in developing highperformance polymer-and ceramic-based dielectric composites,and emphases are placed on capacitive energy storage and harvesting,solid-state cooling,temperature stability,electromechanical energy interconversion,and high-power *** fabrication techniques of dielectric composites such as 3D printing,electrospinning,and cold sintering are addressed,following by highlighted challenges and future research *** advantages and limitations of the typical theoretical calculation methods,such as finite-element,phase-field model,and machine learning methods,for designing high-performance dielectric composites are *** review is concluded by providing a brief perspective on the future development of composite dielectrics toward energy and electronic devices.

关键词： composite dielectric energy storage and conversion ferroelectric

Boosting ultra-wide temperature dielectric stability of multilayer ceramic capacitor through tailoring the combination types of polar nanoregions

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Journal of Materiomics 2024年第4期10卷 751-761页

作者： Jiacheng Liu Kaibiao Xi Beibei Song Huarong Cheng Xiaole Yu mupeng zheng Mankang Zhu Yudong Hou College of Materias Science and Engineering Key Laborutory of Advanced Functional Materials Education Ministry of China Beijing University of TechnologyBeijing100124China Materials R&D Department Beijing Yuanliu Hongyuan Eletronic Technology CompanyLtdBeijing102600China

With the rapid development of space exploration and new energy vehicles,it is urgent to build ultra-wide temperature multilayer ceramic capacitors(UWT MLCCs)to match electronic circuits that can withstand harsh environmental *** ferroelectrics with diffuse phase transition feature are potential dielectrics for the construction of UWT ***,how to ensure high dielectric constant together with low dielectric loss in the wide temperature region is still a big ***,the above difficulties are addressed by tailoring the combination types of polar nanoregions(PNRs)in the(1-x)(0.8Na_(0.5)Bi_(0.5)TiO_(3)-0.2K_(0.5)Bi_(0.5)TiO_(3))-xNaTaO3(NBT-KBT-xNT)*** with PNRS types of P4bm+R3c and P4bm+Pbnm,the combination type of P4bm+Pbnm+R3c PNRs in NBT-KBT-0.31NT is the most beneficial to obtain comprehensive excellent dielectric performance because it can balance the relationship between high dielectric constant and temperature stability over a wide temperature ***,by optimizing the laminating pressure and co-firing temperature to realize a tight interfacial structure between the dielectric layer and the Pt inner electrode,a record-high dielectric constant(er=(907%±15%))together with low dielectric loss(tan δ≤0.025)is achieved over an ultra-wide range from-61℃ to 306℃ for NBT-KBT-0.31 NT MLCC,demonstrating that tailoring the combination types of PNRs is a powerful strategy in designing UWT MLCC dielectrics.

关键词： Lead-free dielectrics Ultra-wide temperature Multilayer ceramic capacitor Polar nanoregion

3D vertically aligned microchannel structure to enhance piezoelectric energy harvesting performance of PZT/PVDF&CNTs piezoelectric composites

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Journal of Materiomics 2024年第5期10卷 1063-1070页

作者： Limin Hou Yu Huan mupeng zheng Yilong Liu Chuilei Wang Xinjian Wang Changxiao Li Zhenxing Wang Tao Wei School of Materials Science and Engineering University of JinanJinan250022China Key Laboratory of Advanced Functional Materials Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing100124China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchXi'an Jiaotong UniversityXi'an710049China SICC Co. LtdJinan250000China

Piezoelectric energy harvesters(PEHs)have attracted significant attention with the ability of converting mechanical energy into electrical energy and power the self-powered microelectronic ***,material's superior energy harvesting performance is closely related to its high transduction coefficient(d_(33)×g_(33)),which is dependent on higher piezoelectric coefficient d33 and lower dielectric constantεr of ***,the high d33 and lowεr are difficult to be simultaneously achieved in piezoelectric ***,lead zirconate titanate(PZT)based piezoelectric composites with vertically aligned microchannel structure are constructed by phase-inversion *** polyvinylidene fluoride(PVDF)and carbon nanotubes(CNTs)are mixed as fillers to fabricate PZT/PVDF&CNTs *** unique structure and uniformly distributed CNTs network enhance the polarization and thus improve the *** PVDF filler effectively reduce theε*** a consequence,the excellent piezoelectric coefficient(d_(33)=595 pC/N)and relatively low dielectric constant(ε_(r)=1,603)were obtained in PZT/PVDF&CNTs composites,which generated an ultra-high d_(33)×g_(33) of 24,942×10^(−15) m^(2)/***,the PZT/PVDF&CNTs piezoelectric composites achieve excellent energy harvesting performance(output voltage:66 V,short current:39.22μA,and power density:1.25μW/mm^(2)).Our strategy effectively boosts the performance of piezoelectric-polymer composites,which has certain guiding significance for design of energy harvesters.

关键词： Piezoelectric-polymer composites Phase-inversion method 3D vertically aligned microchannel structure Piezoelectric energy harvester Carbon nanotubes

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能量收集用压电陶瓷材料研究进展

硅酸盐学报 2016年第3期44卷 359-366页

作者：郑木鹏侯育冬朱满康严辉北京工业大学材料科学与工程学院北京100124

压电能量收集器件发展迅速,发电性能不断提高。然而,压电能量收集器受压电陶瓷材料本身低的机电转换性能限制,机电转换效率较低。制备具有高机电转换性能压电陶瓷材料具有重要的应用价值。评述了以获得高机电转换性能为目标所进行的压... 详细信息

压电能量收集器件发展迅速,发电性能不断提高。然而,压电能量收集器受压电陶瓷材料本身低的机电转换性能限制,机电转换效率较低。制备具有高机电转换性能压电陶瓷材料具有重要的应用价值。评述了以获得高机电转换性能为目标所进行的压电陶瓷材料性能调控方面的研究成果,介绍了非谐振状态和谐振状态下,能量收集器件对压电陶瓷材料的性能要求,比较了能量收集用铅基、无铅压电陶瓷材料的机电转换性能,讨论了具有高机电转换性能压电陶瓷材料设计方法,为进一步开展能量收集用压电陶瓷材料的研究提供思路。总结了该领域存在的问题及对未来的展望。

关键词：能量收集压电陶瓷机电转换性能

Na_(0.5)Bi_(0.5)TiO_3:ZnO无铅复相陶瓷的显微结构与铁电性能

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硅酸盐学报 2017年第5期45卷 717-721页

作者：李玲朱满康郑木鹏侯育冬北京工业大学材料与工程学院北京100124

采用二步固相法制备了0.8Na_(0.5)Bi_(0.5)TiO_3:0.2ZnO无铅复相铁电陶瓷,研究了不同烧结温度制备的复相陶瓷的烧结性能、显微结构和铁电性能。结果表明:Na_(0.5)Bi_(0.5)TiO_3中引入20%(摩尔分数)ZnO后,复相陶瓷产生了第三相Zn_2TiO_4... 详细信息

采用二步固相法制备了0.8Na_(0.5)Bi_(0.5)TiO_3:0.2ZnO无铅复相铁电陶瓷,研究了不同烧结温度制备的复相陶瓷的烧结性能、显微结构和铁电性能。结果表明:Na_(0.5)Bi_(0.5)TiO_3中引入20%(摩尔分数)ZnO后,复相陶瓷产生了第三相Zn_2TiO_4,并且随着烧结温度的升高,Zn_2TiO_4含量逐渐增加。1 000℃烧结的陶瓷样品的剩余极化强度在测试温度为135℃时仍然保留了室温下的81%,且随着烧结温度的升高,不同样品的剩余极化强度没有减小的趋势,证明了ZnO所形成的内建电场提高了Na_(0.5)Bi_(0.5)TiO_3铁电性的高温稳定性。

关键词：无铅压电陶瓷复相陶瓷铁电性氧化锌退极化

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4种石英玻璃的交流电学阻抗行为的比较

硅酸盐学报 2016年第4期44卷 607-612页

作者：吴兴轩朱满康贾渊洁侯育冬郑木鹏北京工业大学材料学院北京100124

分析了4种不同工艺制备的石英玻璃在紫外区和红外区的光谱特征,测量了不同温度下石英玻璃的交流电学阻抗响应。结果表明,4种石英玻璃的体电阻和弛豫时间与温度的关系均符合Arrhenius方程,表明其电导具有热激活特征。同时,不同温度时复... 详细信息

分析了4种不同工艺制备的石英玻璃在紫外区和红外区的光谱特征,测量了不同温度下石英玻璃的交流电学阻抗响应。结果表明,4种石英玻璃的体电阻和弛豫时间与温度的关系均符合Arrhenius方程,表明其电导具有热激活特征。同时,不同温度时复平面阻抗曲线及其介电模量频谱曲线,均反映这些石英玻璃各自呈现单一导电机制,但其激活能差别明显:电熔石英玻璃样品SG1和SG2的电导激活能分别为1.002和1.384 e V,合成石英玻璃样品SG3和SG4的电导激活能分别为1.458和0.520 e V。激活能的数值不仅与石英玻璃的导电类型相关,也与石英玻璃中金属杂质含量、氧缺陷浓度及羟基含量密切相关。

关键词：石英玻璃阻抗谱导电机制激活能

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烧结温度对CuAlO_2陶瓷电性能的影响

北京工业大学学报 2019年第2期45卷 186-190页

作者：朱满康马丙闯郑木鹏侯育冬北京工业大学材料科学与工程学院北京100124

为了提高CuAlO_2陶瓷的电导率,满足其在热电器件使用中的要求,以Cu_2O、Al_2O_3为原料,铝硅酸盐玻璃为添加剂,采用两步固相烧结法制备了CuAlO_2(CAO)陶瓷,研究烧结温度对CAO陶瓷电导率的影响.实验发现:随着烧结温度的上升,CAO陶瓷的密... 详细信息

为了提高CuAlO_2陶瓷的电导率,满足其在热电器件使用中的要求,以Cu_2O、Al_2O_3为原料,铝硅酸盐玻璃为添加剂,采用两步固相烧结法制备了CuAlO_2(CAO)陶瓷,研究烧结温度对CAO陶瓷电导率的影响.实验发现:随着烧结温度的上升,CAO陶瓷的密度、晶粒尺寸和电导率逐渐增大.烧结温度为1 175℃时,CAO陶瓷的表观密度和相对密度达到最大值,分别为4. 408 g/cm3和95. 8%.当烧结温度达1 200℃时,CAO陶瓷晶粒生长发育完整,呈现多边形结构,且其电导率达到最大(2. 42 S/m),比1 050℃的样品高了近10倍.阻抗谱分析表明,烧结温度对CAO陶瓷电导率的改善主要来自于晶粒阻抗的贡献.

关键词：铝酸铜陶瓷烧结温度铝硅酸盐玻璃电性能