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Mobile energy storage technologies for boosting carbon neutrality

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The Innovation 2023年第6期4卷 132-151页

作者： Chenyang Zhang Ying Yang Xuan liu Minglei Mao kanghua li Qing li Guangzu Zhang Chengliang Wang School of Integrated Circuits Wuhan National Laboratory for Optoelectronics(WNL 0)Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Wenzhou Advanced Manufacturing Institute Huazhong University of Science and TechnologyWenzhou 325035China

Carbon neutrality calls for renewable energies,and the efficient use of renewable energies requires energy storage mediums that enable the storage of excess energy and reuse after spatiotemporal *** with traditional energy storage technologies,mobile energy storage technologies have the merits of low cost and high energy conversion efficiency,can be flexibly located,and cover a largerange from miniature to large systems and from high energy density to high power density,although most of them still face challenges or technical *** this review,we provide an overview of the opportunities and challenges of these emerging energy storagetechnologies(induding rechargeable batteries,fuel cells,and electrochemical and dielectric capacitors).Innovative materials,strategies,and technologies are ***,the future directions are *** hope this review will advance the development of mobile energy storage technologies and boost carbon neutrality.

关键词： neutral boosting energy

Regulating local electric field to optimize the energy storage performance of antiferroelectric ceramics via a composite strategy

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Journal of Advanced Ceramics 2023年第3期12卷 598-611页

作者： Ying Yang Zhanming Dou Kailun Zou kanghua li Wei Luo Wen Dong Guangzu Zhang Qiuyun Fu Shenglin Jiang School of Optical and Electronic Information Engineering Research Center for Functional Ceramics MOE and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074China China Zhenhua Group Yunke Electmnics Co. Ltd.Guiyang 550018China

Electrostatic energy storage technology based on dielectrics is the basis of advanced electronics and high-power electrical *** polarization(P)and high electric breakdown strength(Eb)are the key parameters for dielectric materials to achieve superior energy storage *** this work,a composite strategy based on antiferroelectric dielectrics(AFEs)has been proposed to improve the energy storage ***,AlN is selected as the second phase for the(Pb_(0.915)Ba_(0.04)La_(0.03))(Zr_(0.65)Sn_(0.3)Ti_(0.05))O_(3)(PBLZST)AFEs,which is embedded in the grain boundaries to construct insulating networks and regulate the local electric field,improving the ***,it is emphasized that AFEs have the AFE–FE and FE–AFE phase transitions,and the increase of the phase transition electric fields can further improve the recoverable energy density(Wrec).As a result,the Eb increases from 180 to 290 kV·cm−1 with a simultaneous increase of the phase transition electric fields,magnifying the Wrec to~144%of the pristine *** mechanism for enhanced Eb and the phase transition electric fields is revealed by the finite element simulation ***,the PBLZST:1.0 wt%AlN composite ceramics exhibit favorable temperature stability,frequency stability,and charge–discharge ability,making the composite ceramics a promising candidate for energy storage applications.

关键词： energy storage antiferroelectric composites local electric field electric breakdown strength

Enhancing energy storage efficiency in lead-free dielectric ceramics through relaxor and lattice strain engineering

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Journal of Materiomics 2024年第6期10卷 1196-1205页

作者： Xuetian Gong Chao Zhang Dong Su Wenrong Xiao Fangjie Cen Ying Yang Shenglin Jiang Jing Wang kanghua li Guangzu Zhang School of Integrated Circuits Engineering Research Center for Functional Ceramics MOE and Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhanHubei430074China College of Chemnistry and Materials Science Hebei UniversityBaodingHebei071002China Key Lab of Functional Materials for Electronic Information(B) Ministry of EducationWuhanHubei430074China

Dielectric capacitors with high power density and fast charge-discharge speed play an essential role in the development of pulsed power *** increased demands for miniaturization and practicality of pulsed power equipment also necessitate the development of dielectric materials that possess high energy density while maintaining ultrahigh efficiency(η).In particular,ultrahigh efficiency signifies minimal energy loss,which is essential for practical applications but challenging to effectively ***,we demonstrate a strategy of incorporating heterovalent elements into Ba(Zr_(0.1)Ti_(0.9))O_(3),which contributes to achieving relaxor ferroelectric ceramics and reducing lattice strain,thereby improving the comprehensive energy storage ***,optimal energy storage performance is attained in 0.85Ba(Zr_(0.1)Ti_(0.9))O_(3)-0.15Bi(Zn_(2/3)Ta_(1/3))O_(3)(BZT-0.15BiZnTa),with an ultrahighηof 97.37%at 440 kV/cm(an advanced level in the lead-free ceramics)and an excellent recoverable energy storage density(Wrec)of 3.74 J/cm^(3).Notably,the BZT-0.15BiZnTa ceramics also exhibit exceptional temperature stability,maintaining fluctuations in Wrec within∼10%andηconsistently exceeding 90% across the wide temperature range of−55℃ to 160℃,and under a high electric field of 250 kV/*** these features demonstrate that the relaxor and lattice strain engineering strategies have been successful in achieving high-performance lead-free ceramics,paving the way for designing high-efficiency dielectric capacitors with a wide temperature range.

关键词： Energy storage Relaxor ferroelectrics Lead-free ceramics Lattice strain engineering

Robust,self-adhesive,and low-contact impedance polyvinyl alcohol/polyacrylamide dual-network hydrogel semidry electrode for biopotential signal acquisition

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SmartMat 2024年第2期5卷 67-82页

作者： Guangli li Ying liu Yuwei Chen Yonghui Xia Xiaoman Qi Xuan Wan Yuan Jin Jun liu Quanguo He kanghua li Jianxin Tang Hunan Key Laboratory of Biomedical Nanomaterials and Devices College of Life Sciences and ChemistryHunan University of TechnologyZhuzhouChina Department of Neurology Zhuzhou People's HospitalZhuzhouChina Zhuzhou Institute for Food and Drug Control ZhuzhouChina

Herein,we fabricated a flexible semidry electrode with excellent mechanical performance,satisfactory self-adhesiveness,and low-contact impedance using physical/chemical crosslinked polyvinyl alcohol/polyacrylamide dual-network hydrogels(PVA/PAM DNHs)as an efficient saline *** resultant PVA/PAM DNHs showed admirable adhesive and compliance to the hairy scalp,facilitating the establishment of a robust electrode/skin interface for biopotential signal ***,the PVA/PAM DNHs steadily released trace saline onto the scalp to achieve the minimized potential drift(1.47±0.39 mV/min)and low electrode–scalp impedance(18.2±8.9 kΩ@10 Hz).More importantly,the application feasibility of real-world brain−computer interfaces(BCIs)was preliminarily validated by 10 participants using two classic BCI *** mean temporal cross-correlation coefficients between the semidry and wet electrodes in the eyes open/closed and the N200 speller paradigms are 0.919±0.054 and 0.912±0.050,*** electrodes demonstrate anticipated neuroelectrophysiological responses with similar *** semidry electrode could also effectively capture robust P-QRS-T peaks during electrocardiogram *** their outstanding advantages of fast setup,user-friendliness,and robust signals,the proposed PVA/PAM DNH-based electrode is a promising alternative to wet electrodes in biopotential signal acquisition.

关键词： brain-computer interface dual-network hydrogel electrocardiogram signals electroencephalography signals semidry electrode

Filter-free self-power CdSe/Sb_(2)(S_(1-x),Se_(x))_(3)nearinfrared narrowband detection and imaging

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InfoMat 2021年第10期3卷 1145-1153页

作者： kanghua li Yue Lu Xuke Yang liuchong Fu Jungang He Xuetian lin Jiajia Zheng Shuaicheng Lu Chao Chen Jiang Tang Sargent Joint Research Center Wuhan National Laboratory for Optoelectronics(WNLO)School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhanHubeiChina Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Materials Science and EngineeringWuhan Institute of TechnologyWuhanHubeiChina

Accurate and clear bioimaging is crucial in the field of medical ***-quality bioimaging requires to avoid the effects of ambient light as well as the absorption of biological ***(NIR)narrowband detectors located at wavelength from 650 to 900 nm can meet these requirements;thus,they are the potential *** this work,we construct a filter-free and self-power NIR narrowband photodetector based on the structure of n-CdSe/p-Sb_(2)(S_(1-x),Se_(x))_(3)heterojunction,and achieve a narrow spectral response at 735 nm with a full width at half-maximum of 35.3 nm in the ***,the imaging characteristics of the NIR narrowband detector are explored,verifying the ability to narrowband detection and *** filter-free and self-power NIR narrowband detector shows considerable promise in real-life applications.

关键词： CdSe narrowband photodetector nearinfrared Sb_(2)(S_(1-x),Se_(x))_(3)

Fluoride passivation of ZnO electron transport layers for efcient PbSe colloidal quantum dot photovoltaics

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Frontiers of Optoelectronics 2023年第3期16卷 141-151页

作者： Jungang He You Ge Ya Wang Mohan Yuan Hang Xia Xingchen Zhang Xiao Chen Xia Wang Xianchang Zhou kanghua li Chao Chen Jiang Tang Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Hubei Engineering Technology Research Center of Optoelectronic and New Energy MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China Wuhan National Laboratory for Optoelectronics(WNLO) School of Optical and Electronic InformationSchool of Integrated CircuitsHuazhong University of Science and TechnologyWuhan 430074China

Lead selenide(PbSe)colloidal quantum dots(CQDs)are suitable for the development of the next-generation of photovoltaics(PVs)because of efcient multiple-exciton generation and strong charge coupling *** date,the reported high-efcient PbSe CQD PVs use spin-coated zinc oxide(ZnO)as the electron transport layer(ETL).However,it is found that the surface defects of ZnO present a difculty in completion of passivation,and this impedes the continuous progress of *** address this disadvantage,fuoride(F)anions are employed for the surface passivation of ZnO through a chemical bath deposition method(CBD).The F-passivated ZnO ETL possesses decreased densities of oxygen vacancy and a favorable band *** from these improvements,PbSe CQD PVs report an efciency of 10.04%,comparatively 9.4%higher than that of devices using sol-gel(SG)ZnO as *** are optimistic that this interface passivation strategy has great potential in the development of solution-processed CQD optoelectronic devices.

关键词： Zinc oxide Surface passivation Band alignment Quantum-dot solar cells

三维接骨板结合加压螺钉系统(TDP&CS)的研制和生物力学比较研究

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生物医学工程学杂志 2000年第4期17卷 421-424,428页

作者：李珍生李康华深圳市人民医院骨科深圳518020 湖南医科大学湘雅医院长沙410078

作者设计了一类新的治疗股骨粗隆下骨折的器材———三维接骨板结合加压螺钉系统 (TDP&CS)。与Gamma钉Jewett钉进行生物力学测试比较研究。方法为设计了有 5mm缺损的骨折固定模型和骨折愈合拨钉后模型。固定模型组先后作四点抗弯、抗轴... 详细信息

作者设计了一类新的治疗股骨粗隆下骨折的器材———三维接骨板结合加压螺钉系统 (TDP&CS)。与Gamma钉Jewett钉进行生物力学测试比较研究。方法为设计了有 5mm缺损的骨折固定模型和骨折愈合拨钉后模型。固定模型组先后作四点抗弯、抗轴压及抗扭测试 ,拨钉后模型组先后作抗弯和抗扭测试。结果表明 :TDP&CS在固定组模型中在四点抗弯、轴向抗压及抗扭三方面的性能均显著优于Jewett钉 (P <0 .0 5 ) ,而与Gamma钉无显著差异。但在拨钉后组、TDP&CS组在抗弯及抗扭性能上均显著优于Gamma钉和Jewett钉组 (P <0 .0 5 )。TDP&CS是一种固定牢靠 ,可与目前认为较先进的Gamma钉相媲美而显著优于Jewett钉 ,但TDP&CS的钉道对股骨强度影响小 ,拨钉后股骨强度显著优于Gamma钉组和Jewett钉组 ,可能是一种优良的治疗股骨粗隆下骨折的内固定器材。

关键词：股骨粗隆下骨折生物力学接骨板 TDP&CS

Efficiency improvement of Sb2Se3 solar cells via grain boundary inversion

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Efficiency improvement of Sb2Se3 solar cells via grain bound...

第六届新型太阳能电池材料科学与技术学术研讨会

作者： Chao Chen kanghua li Jiang Tang Huazhong University of Science and Technology Wuhan National Laboratory for Optoelectronics

Exploring low-toxic and low-cost absorber materials for high-efficient solar cells has received wide attention in photovoltaic field. SbSe is a promising photovoltaic material with earth-abundant, low-toxic and low-cost constituents. Recent researches revealed that recombination losses in the absorber layer limited the efficiency of SbSe solar cells. In this abstract, we demonstrated a strategy of grain boundary(GB) inversion to alleviate such recombination loss. Owning to its 1D crystal structure, we successfully inverted the GBs of SbSe films by introducing n-type Cu interstitial doping at GBs via a low-temperature CuCl treatment. A built-in electric field is established between p-type grain interiors(GIs) and n-type GBs, which spatially separates photo-generated electrons and holes, suppresses recombination loss and enhances carrier collection efficiency. In the end, we obtained an efficiency of 7.04%, which is the highest efficiency of SbSe solar cells based on rapid thermal evaporation technology.

关键词： Sb2Se3 solar cell grain boundary inversion n-type doping

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我国文化产业市场化发展的路径选择

福建论坛（人文社会科学版） 2009年第10期 71-76页

作者：李康化上海交通大学媒体与设计学院上海200240

中国文化产业的兴起,是经济体制改革强力推进的结果,是文化的市场化和经济化。文化产业的市场化发展道路是壮大中国文化产业的战略选择,因为市场化是文化产品价值的实现方式,是文化市场体系的培育路径,是文化管理体制的改革方向。文化... 详细信息

中国文化产业的兴起,是经济体制改革强力推进的结果,是文化的市场化和经济化。文化产业的市场化发展道路是壮大中国文化产业的战略选择,因为市场化是文化产品价值的实现方式,是文化市场体系的培育路径,是文化管理体制的改革方向。文化产业市场化发展可以在主体、技术、渠道方面给出安排,同时要防止其对正确价值取向的偏离。

关键词：文化产业市场化发展价值取向