检索结果-内蒙古大学图书馆

High‐Voltage Rechargeable Alkali–Acid Zn–PbO2 Hybrid Battery

Angewandte Chemie 2020年第52期132卷 23799-23803页

作者： Yunpeng Xu Pingwei Cai Kai Chen Yichun Ding Prof. Long Chen Weifan Chen Prof. Dr. Zhenhai Wen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. China Department of Chemistry Institute of Molecular Plus Tianjin Key Laboratory of Molecular Optoelectronic Science Tianjin University Tianjin 300072 P. R. China University of Chinese Academy of Science Beijing 100049 P. R. China School of Materials Science & Engineering Nanchang University Nanchang 330031 P. R. China

An alkaline–acid Zn‐PbO2 hybrid battery is developed by coupling a zinc alkaline anode with an acidic PbO2 cathode. The system gives a high desirable electrochemical performance with high working voltage, high area capacity, and long cyclic stability. The present system addresses some of the critical problems of traditional aqueous batteries (e.g., lead acid batteries).Aqueous rechargeable batteries have attracted attention owning to their advantages of safety, low cost, and sustainability, while the limited electrochemical stability window (1.23 V) of water leads to their failure in competition with organic‐based lithium‐ion batteries. Herein, we report an alkali–acid Zn–PbO2 hybrid aqueous battery obtained by coupling an alkaline Zn anode with an acidic PbO2 cathode. It shows the capability to deliver an impressively high open‐circuit voltage (Voc) of 3.09 V and an operate voltage of 2.95 V at 5 mA cm−2, thanks to the contribution of expanding the voltage window and the electrochemical neutralization energy from the alkali–acid asymmetric‐electrolyte hybrid cell. The hybrid battery can potentially deliver a large area capacity over 2 mAh cm−2 or a high energy density of 252.39 Wh kg−1 and shows almost no fading in area capacity over 250 charge–discharge *** a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re‐organized for online delivery, but are not copy‐edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the *** note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.

关键词： alkali-acid electrolytes aqueous batteries high voltage rechargeable Zn-PbO2 battery

来源：评论

学校读者我要写书评

暂无评论

Fully Aromatic Self-Assembled Hole-Selective Layer toward Efficient Inverted Wide-Bandgap Perovskite Solar Cells with Ultraviolet Resistance

引用

Angewandte Chemie 2023年第1期136卷

作者： Chi Li Zilong Zhang Huifeng Zhang Wenlong Yan Yuheng Li Lusheng Liang Wei Yu Xuteng Yu Yao Wang Prof. Ye Yang Prof. Mohammad Khaja Nazeeruddin Prof. Peng Gao CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Laboratory for Advanced Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institute Chinese Academy of Sciences Xiamen 361021 China University of Chinese Academy of Sciences Beijing 100049 China Contribution: Writing - original draft (lead) Contribution: Writing - original draft (equal) State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Contribution: Methodology (lead) Contribution: Investigation (equal) Contribution: Software (lead) Contribution: Data curation (equal) Contribution: Resources (equal) Group for Molecular Engineering of Functional Materials Institute of Chemical Sciences and Engineering École Polytechnique Fedérale de Lausanne Peshawar 1951 Sion Switzerland Contribution: Methodology (equal)

Ultraviolet-induced degradation has emerged as a critical stability concern impeding the widespread adoption of perovskite solar cells (PSCs), particularly in the context of phase-unstable wide-band gap perovskite films. This study introduces a novel approach by employing a fully aromatic carbazole-based self-assembled monolayer, denoted as (4-(3,6-dimethoxy-9H-carbazol-9-yl)phenyl)phosphonic acid (MeO-PhPACz), as a hole-selective layer (HSL) in inverted wide-band gap PSCs. Incorporating a conjugated linker plays a pivotal role in promoting the formation of a dense and highly ordered HSL on substrates, facilitating subsequent perovskite interfacial interactions, and fostering the growth of uniform perovskite films. The high-quality film could effectively suppress interfacial non-radiative recombination, improving hole extraction/transport efficiency. Through these advancements, the optimized wide-band gap PSCs, featuring a band gap of 1.68 eV, attain an impressive power conversion efficiency (PCE) of 21.10 %. Remarkably, MeO-PhPACz demonstrates inherent UV resistance and heightened UV absorption capabilities, substantially improving UV resistance for the targeted PSCs. This characteristic holds significance for the feasibility of large-scale outdoor applications.

关键词： Carbazole Hole-Selective Layer Self-Assembled Monolayer UV Resistance Wide-Bandgap Perovskite

来源：评论

学校读者我要写书评

暂无评论

Single-atom Iron Catalyst with Biomimetic Active Center to Accelerate Proton Spillover for Medical-level Electrosynthesis of H2O2Disinfectant

引用

Angewandte Chemie 2023年第34期135卷

作者： Dr. Yan Li Dr. Junxiang Chen Yaxin Ji Zilin Zhao Wenjun Cui Dr. Xiahan Sang Dr. Yi Cheng Dr. Bin Yang Dr. Zhongjian Li Dr. Qinghua Zhang Prof. Dr. Lecheng Lei Prof. Dr. Zhenhai Wen Prof. Dr. Liming Dai Prof. Dr. Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological Engineering Zhejiang University 310027 Hangzhou China Center of Advanced Carbon Materials School of Chemical Engineering University of New South Wales 2052 Sydney NSW Australia CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 350002 Fuzhou Fujian China Research and Testing Centre of Material School of Materials Science and Engineering Wuhan University of Technology 430070 Wuhan China Zhejiang Hengyi Petrochemical Research Institute Co. Ltd. 311200 Hangzhou China Institute of Zhejiang University—Quzhou 324000 Quzhou China Donghai Laboratory 316021 Zhoushan China

Electrosynthesis of H 2 O 2 has great potential for directly converting O 2 into disinfectant, yet it is still a big challenge to develop effective electrocatalysts for medical-level H 2 O 2 production. Herein, we report the design and fabrication of electrocatalysts with biomimetic active centers, consisting of single atomic iron asymmetrically coordinated with both nitrogen and sulfur, dispersed on hierarchically porous carbon (Fe SA -NS/C). The newly-developed Fe SA -NS/C catalyst exhibited a high catalytic activity and selectivity for oxygen reduction to produce H 2 O 2 at a high current of 100 mA cm −2 with a record high H 2 O 2 selectivity of 90 %. An accumulated H 2 O 2 concentration of 5.8 wt.% is obtained for the electrocatalysis process, which is sufficient for medical disinfection. Combined theoretical calculations and experimental characterizations verified the rationally-designed catalytic active center with the atomic Fe site stabilized by three-coordinated nitrogen atoms and one-sulfur atom (Fe-N 3 S-C). It was further found that the replacement of one N atom with S atom in the classical Fe-N 4 -C active center could induce an asymmetric charge distribution over N atoms surrounding the Fe reactive center to accelerate proton spillover for a rapid formation of the OOH* intermediate, thus speeding up the whole reaction kinetics of oxygen reduction for H 2 O 2 electrosynthesis.

关键词： H2O2 Production Medical-Level Disinfectant Fe Single Atom Proton Spillover Promoted Reaction Kinetics

来源：评论

学校读者我要写书评

暂无评论

Engineering the Bandgap and Surface Structure of CsPbCl3Nanocrystals to Achieve Efficient Ultraviolet Luminescence

引用

Angewandte Chemie 2021年第17期133卷

作者： Yunqin Zhang Dr. Xiyue Cheng Dr. Datao Tu Dr. Zhongliang Gong Renfu Li Yingjie Yang Prof. Wei Zheng Dr. Jin Xu Prof. Dr. Shuiquan Deng Prof. Dr. Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China University of Chinese Academy of Sciences Beijing 100049 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China

Herein, we report the design of novel ultraviolet luminescent CsPbCl 3 nanocrystals (NCs) with the emission peak at 381 nm through doping of cadmium ions. Subsequently, a surface passivation strategy with CdCl 2 is adopted to improve their photoluminescence quantum yield (PLQY) with the maximum value of 60.5 %, which is 67 times higher than that of the pristine counterparts. The PLQY of the surface passivated NCs remains over 50 % after one week while the pristine NCs show negligible emission. By virtue of density functional theory calculations, we reveal that the higher PLQY and better stability after surface passivation may result from the significant elimination of surface chloride vacancy (V Cl ) defects. These findings provide fundamental insights into the optical manipulation of metal ion-doped CsPbCl 3 NCs.

关键词： band gap CsPbCl3 lead halide perovskite nanocrystals surface passivation ultraviolet luminescence

来源：评论

学校读者我要写书评

暂无评论

Synergistic Lysozyme-Photodynamic Therapy Against Resistant Bacteria based on an Intelligent Upconversion Nanoplatform

引用

Angewandte Chemie 2021年第35期133卷

作者： Zhuo Li Dr. Shan Lu Dr. Wenzhen Liu Tao Dai Jianxi Ke Dr. Xingjun Li Renfu Li Yuxiang Zhang Prof. Zhuo Chen Prof. Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures State Key Laboratory of Structural Chemistry and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China College of Chemistry Fuzhou University Fuzhou Fujian 350116 China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China

The rapid emergence of drug-resistant bacteria has raised a great social concern together with the impetus for exploring advanced antibacterial ways. NIR-triggered antimicrobial photodynamic therapy (PDT) by lanthanide-doped upconversion nanoparticles (UCNP) as energy donor exhibits the advantages of high tissue penetration, broad antibacterial spectrum and less acquired resistance, but is still limited by its low efficacy. Now we designed a bio-inorganic nanohybrid and combined lysozyme (LYZ) with UCNP-PDT system to enhance the efficiency against resistant bacteria. Benefiting from the rapid adhesion to bacteria, intelligently bacteria-responsive LYZ release and synergistic LYZ-PDT effect, the nanoplatform achieves an exceptionally strong bactericidal capacity and conspicuous bacteriostasis on methicillin-resistant S. aureus. These findings pave the way for designing efficiently antibacterial nanomaterials and provide a new strategy for combating deep-tissue bacterial infection.

关键词： antibacterial agents enzymes mesoporous materials photodynamic therapy upconversion nanoparticles

来源：评论

学校读者我要写书评

暂无评论

Enhancing Dye-Triplet-Sensitized Upconversion Emission Through the Heavy-Atom Effect in CsLu2F7:Yb/Er Nanoprobes

引用

Angewandte Chemie 2021年第1期134卷

作者： Peng Zhang Dr. Jianxi Ke Prof. Datao Tu Jiayao Li Yifan Pei Le Wang Dr. Xiaoying Shang Tianyong Guan Dr. Shan Lu Prof. Zhuo Chen Prof. Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China College of Chemistry Fuzhou University Fuzhou Fujian 350116 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China

Lanthanide (Ln 3+ )-doped upconversion (UC) nanoprobes, which have drawn extensive attention for various bioapplications, usually suffer from small absorption cross-sections and weak luminescence intensity of Ln 3+ ions. Herein, we report the controlled synthesis of a new class of Ln 3+ -doped UC nanoprobes based on CsLu 2 F 7 :Yb/Er nanocrystals (NCs), which can effectively increase the intersystem crossing (ISC) efficiency from singlet excited state to triplet excited state of IR808 up to 99.3 % through the heavy atom effect. By virtue of the efficient triplet sensitization of IR808, the optimal UC luminescence (UCL) intensity of IR808-modified CsLu 2 F 7 :Yb/Er NCs is enhanced by 1309 times upon excitation at 808 nm. Benefiting from the intense dye-triplet-sensitized UCL, the nanoprobes are demonstrated for sensitive assay of extracellular and intracellular hypochlorite with an 808-nm/980-nm dual excited ratiometric strategy.

关键词： CsLu2F7 dye sensitization lanthanide ions triplet excited states upconversion luminescence

来源：评论

学校读者我要写书评

暂无评论

Metal–Organic Cages with {SiW9Ni4} Polyoxotungstate Nodes

引用

Angewandte Chemie 2022年第19期134卷

作者： Qing Chang Xiangyu Meng Wenjun Ruan Yeqin Feng Rui Li Jiayu Zhu Prof. Yong Ding Prof. Hongjin Lv Prof. Wei Wang Prof. Guanying Chen Prof. Xikui Fang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Applied Organic Chemistry Key Laboratory of Advanced Catalysis of Gansu Province College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China MOE Key Laboratory of Cluster Science School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 102488 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen Fujian 361021 China

A tritopic, Ni-substituted Keggin cluster, {SiW 9 Ni 4 }, assembles with rigid dicarboxylate linkers to give rise to a set of discrete, POM 2 n L 3 n -type structures (POM={SiW 9 Ni 4 }) with defined interior voids. The outcome of coordination-driven self-assemblies of these polyhedral cages—from fused dimers to trigonal prisms—was found to be sensitive to bend angles of the ditopic ligands, which vary from 122° to 180°. These polyoxotungstate-based metal–organic polyhedra, when coupled with [Ru(bpy) 3 ]Cl 2 as a photosensitizer and triethanolamine as the electron donor, serve as highly effective catalysts for CO 2 reduction, with turnover numbers up to 328 and CO selectivity as high as 96.2 %. The inner cavities of such cage structures, if functionalized or of sufficient size to encapsulate targeted guest molecules, could present a new strategy towards functional materials for potential applications.

关键词： CO2 Photoreduction Metal–Organic Polyhedra Nickel Polyoxometalates Self-assembly

来源：评论

学校读者我要写书评

暂无评论

Moisture-Resistant Mn4+-Doped Core-Shell Structured Fluoride Red Phosphor Exhibiting High Luminous Efficacy for Warm White LEDs

Moisture-Resistant Mn4+-Doped Core-Shell Structured Fluoride...

引用

中国化学会第十届全国无机化学学术会议

作者： Decai Huang Haomiao Zhu Zhonghua Deng Qilin Zou Hongyu Lu Xiaodong Yi Wang Guo Canzhong Lu Xueyuan Chen CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Xiamen Institute of Rare Earth Materials Haixi Institute Chinese Academy of Sciences University of the Chinese Academy of Sciences

KTiF:Mn is a highly efficient narrow-band emission red phosphor with promising applications in white LEDs and wide-gamut displays.[1-3] Nevertheless, the poor moisture-resistant property of this material hinders its further commercialization. Herein, we introduce a convenient reverse cation exchange strategy to construct a core-shell structured KTiF:Mn@KTiF phosphor. As a result, a high internal photoluminescence quantum yield of 93% is achieved for the sample with the Mn concentration of 7 at.%.The packaged white LED by employing this sample asred phosphor exhibits an extraordinarily high luminous efficacy of 162 lm W, a CCT of 3510 K and a color rendering index of 93（Ra）. Particularly, the aging tests performed on this device at 85 ℃ and 85% humidity for 480 h show that the luminous efficacy retains as high as 89% with respect to its initial value. These findings demonstrate a substantial advance towards the commercial application of KTiF:Mn@KTiF phosphor.

关键词： light-emitting diodes phosphors cation exchange photoluminescence Mn4+

来源：评论

学校读者我要写书评

暂无评论

Resolving the Origins of Superior Cycling Performance of Antimony Anode in Sodium-ion Batteries: A Comparison with Lithium-ion Batteries

引用

Angewandte Chemie 2024年第11期136卷

作者： Ruiwen Shao Zhefei Sun Lei Wang Jianhai Pan Luocai Yi Yinggan Zhang Jiajia Han Zhenpeng Yao Jie Li Zhenhai Wen Shuangqiang Chen Shu-Lei Chou Dong-Liang Peng Qiaobao Zhang Beijing Advanced Innovation Center for Intelligent Robots and Systems School of Medical Technology Beijing Institute of Technology Beijing China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Materials Xiamen University Xiamen Fujian 361005 China Institute for Carbon Neutralization College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China Department of Chemical Engineering School of Environmental and Chemical Engineering Shanghai University Shangda Road 99 Shanghai 200444 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China Center of Hydrogen Science Shanghai Jiao Tong University Shanghai China State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai China Department of Energy Politecnico di Milano Via Lambruschini 4 20156 Milano Italy

Alloying-type antimony (Sb) with high theoretical capacity is a promising anode candidate for both lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). Given the larger radius of Na + (1.02 Å) than Li + (0.76 Å), it was generally believed that the Sb anode would experience even worse capacity degradation in SIBs due to more substantial volumetric variations during cycling when compared to LIBs. However, the Sb anode in SIBs unexpectedly exhibited both better electrochemical and structural stability than in LIBs, and the mechanistic reasons that underlie this performance discrepancy remain undiscovered. Here, using substantial in situ transmission electron microscopy, X-ray diffraction, and Raman techniques complemented by theoretical simulations, we explicitly reveal that compared to the lithiation/delithiation process, sodiation/desodiation process of Sb anode displays a previously unexplored two-stage alloying/dealloying mechanism with polycrystalline and amorphous phases as the intermediates featuring improved resilience to mechanical damage, contributing to superior cycling stability in SIBs. Additionally, the better mechanical properties and weaker atomic interaction of Na−Sb alloys than Li−Sb alloys favor enabling mitigated mechanical stress, accounting for enhanced structural stability as unveiled by theoretical simulations. Our finding delineates the mechanistic origins of enhanced cycling stability of Sb anode in SIBs with potential implications for other large-volume-change electrode materials.

关键词： Antimony anode Lithium-ion batteries Sodium-ion batteries In situ transmission electron microscopy Electrochemical performance

来源：评论

学校读者我要写书评

暂无评论

Scalable Synthesis of Tungsten Disulfide Nanosheets for Alkali-Acid Electrocatalytic Sulfion Recycling and H2Generation

引用

Angewandte Chemie 2021年第39期133卷

作者： Luocai Yi Yaxin Ji Ping Shao Dr. Junxiang Chen Junwei Li Hao Li Kai Chen Xinxin Peng Prof. Zhenhai Wen CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 P. R. China College of Chemistry and Materials Science Fujian Normal University Fuzhou 350007 China University of Chinese Academy of Science Beijing 100049 China

WS 2 nanosheets hold great promise for a variety of applications yet faces a grand challenge in terms of large-scale synthesis. We report a reliable, scalable, and high-yield (>93 %) synthetic strategy to fabricate WS 2 nanosheets, which exhibit highly desirable electrocatalytic properties toward both the alkaline sulfion (S 2− ) oxidation reaction (SOR) and the acidic hydrogen evolution reaction (HER). The findings prompted us to develop a hybrid alkali-acid electrochemical cell with the WS 2 nanosheets as bifunctional electrode catalysts of alkaline anodic SOR and acidic cathodic HER. The proof-of-concept device holds promise for self-power or low-electricity electrolytic H 2 generation and environmentally friendly recycling of sulfion with enhanced electron utilization efficiency.

关键词： hydrogen evolution reaction molten salt synthesis sulfide oxidation reaction WS2 nanosheets

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：