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An Endotenon Sheath-Inspired Double-Network Binder Enables Superior Cycling Performance of Silicon Electrodes

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Nano-Micro Letters 2022年第6期14卷 15-27页

作者： Meifang Jiang Pengzhou Mu Huanrui Zhang Tiantian Dong Ben Tang huayu qiu Zhou Chen Guanglei Cui Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesNo.189 Songling RoadQingdao 266101People’s Republic of China Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education College of Chemistry and Chemical EngineeringOcean University of ChinaNo.238 Songling RoadQingdao 266100People’s Republic of China University of Chinese Academy of Sciences Beijing 100190People’s Republic of China

Silicon(Si)has been regarded as an alternative anode material to traditional graphite owing to its higher theoretical capacity(4200 vs.372 m Ah g;).However,Si anodes suffer from the inherent volume expansion and unstable solid electrolyte interphase,thus experiencing fast capacity decay,which hinders their commercial application.To address this,herein,an endotenon sheathinspired water-soluble double-network binder(DNB)is presented for resolving the bottleneck of Si anodes.The as-developed binder shows excellent adhesion,high mechanical properties,and a considerable self-healing capability mainly benefited by its supramolecular hybrid network.Apart from these advantages,this binder also induces a Li;N/Li F-rich solid electrolyte interface layer,contributing to a superior cycle stability of Si electrodes.As expected,the DNB can achieve mechanically more stable Si electrodes than traditional polyacrylic acid and pectin binders.As a result,DNB delivers superior electrochemical performance ofSi/Li half cells and Li Ni;Co;Mn;O;/Si full cells,even with a high loading of Si electrode,to traditional polyacrylic acid and pectin binders.The bioinspired binder design provides a promising route to achieve long-life Si anode-assembled lithium batteries.

关键词： Efficiency Double-network binder Silicon electrodes Lithium battery

Quasi‑Solid Electrolyte Interphase Boosting Charge and Mass Transfer for Dendrite‑Free Zinc Battery

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Nano-Micro Letters 2023年第4期15卷 223-237页

作者： Xueer Xu Yifei Xu Jingtong Zhang Yu Zhong Zhongxu Li huayu qiu Hao Bin Wu Jie Wang Xiuli Wang Changdong Gu Jiangping Tu State Key Laboratory of Silicon Materials Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Provinceand School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Institute for Composites Science Innovation(InCSI)and State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101People’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Department of Engineering Mechanics School of Aeronautics and AstronauticsZhejiang UniversityHangzhou 310027People’s Republic of China

The practical applications of zinc metal batteries are plagued by the dendritic propagation of its metal anodes due to the limited transfer rate of charge and mass at the electrode/electrolyte interphase.To enhance the reversibility of Zn metal,a quasi-solid interphase composed by defective metal-organic framework(MOF)nanoparticles(D-UiO-66)and two kinds of zinc salts electrolytes is fabricated on the Zn surface served as a zinc ions reservoir.Particularly,anions in the aqueous electrolytes could be spontaneously anchored onto the Lewis acidic sites in defective MOF channels.With the synergistic effect between the MOF channels and the anchored anions,Zn^(2+)transport is prompted significantly.Simultaneously,such quasi-solid interphase boost charge and mass transfer of Zn^(2+),leading to a high zinc transference number,good ionic conductivity,and high Zn^(2+)concentration near the anode,which mitigates Zn dendrite growth obviously.Encouragingly,unprecedented average coulombic efficiency of 99.8%is achieved in the Zn||Cu cell with the proposed quasi-solid interphase.The cycling performance of D-UiO-66@Zn||MnO_(2)(~92.9%capacity retention after 2000 cycles)and D-UiO-66@Zn||NH_(4)V_(4)O_(10)(~84.0%capacity retention after 800 cycles)prove the feasibility of the quasi-solid interphase.

关键词： Mass transfer Defect engineering Quasi-solid electrolyte interphase Zinc metal anode Zinc batteries

Facile generation of highly durable thiol-functionalized polyhedral oligomeric silsesquioxane based superhydrophobic melamine foam

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Frontiers of Chemical Science and Engineering 2022年第8期16卷 1247-1258页

作者： Meng Li Yuanfeng Fang Chun Liu Mengmeng Zhou Xiaomei Miao Yongbing Pei Yue Yan Wenjun Xiao huayu qiu Lianbin Wu Key Laboratory of Organosilicon Chemistry and Materials Technology Ministry of EducationHangzhou Normal UniversityHangzhou 311121China

In this study,a durable superhydrophobic/superoleophilic melamine foam was fabricated by a facile and rapid one-step thiol-ene click chemistry and Michael addition reaction,which demonstrated excellent robustness in oil/water separation.First,1H,1H,2H-perfluoro-1-hexene reacted with thiol-functionalized polyhedral oligomeric silsesquioxane via the thiol-ene click chemistry to obtain a fluorinated thiol-functionalized polyhedral oligomeric silsesquioxane solution.Subsequently,the melamine foam was immersed to the solution system to form nanoaggregates on the melamine foam surface by the Michael addition reaction in the presence of ultraviolet light.The micro/nano rough structure and low surface energy of the nanoaggregates layer endowed the pristine melamine foam with superhydrophobicity;the water contact angle was greater than 150°.More importantly,the as-prepared melamine foam could withstand harsh conditions,such as a corrosive solution environment,strong ultraviolet light,mechanical compression,high and low temperature exposure,and ultrasonic washing.Driven by gravity,the as-prepared melamine foam could efficiently separate the oil/water mixtures and maintain 98%separation efficiency at high and low temperatures.In addition,it maintained the desirable absorption capability in different oil/organic solvents even after 15 absorption cycles.Accordingly,this facile,low-cost,and robust onestep method provides important support for the superhydrophobic oil/water separation field.

关键词： superhydrophobic melamine foam thiol-func tionalized polyhedral oligomeric silsesquioxane durable,oil/water separation

Correction to:An endotenon sheath‑inspired double‑network binder enables superior cycling performance of silicon electrodes

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Nano-Micro Letters 2022年第8期14卷 229-231页

The original version of this article unfortunately contained some mistakes.1.The authors found that the data unit in Fig.3a–f is wrong.The corrected version of Fig.3 is given below:2.The authors found that explanation of the data lines in Fig.2e is wrong.The corrected version of the explanation of Fig.2e is given below:The DNB can endure approximately 300%stretching and withstand stress up to about 1.5 MPa,as shown in Fig.2e.

关键词： explanation enable cycling

Co-Ni/MgO催化剂上低温甲烷二氧化碳干重整研究

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工程热物理学报 2024年第6期45卷 1735-1742页

作者：杨桐冉景煜黄鑫欧志良邱华禹重庆大学能源与动力工程学院低品位能源利用技术及系统教育部重点实验室重庆400044

采用溶胶凝胶法制备Ni/MgO和Co-Ni/MgO催化剂,考察了催化剂在甲烷二氧化碳低温干重整反应中的性能。结果表明1%Co-10%Ni/Mg O催化剂拥有较高的CH_(4)、CO_(2)转化率以及最高的H_(2)/CO,且在450℃下反应20 h后该催化剂的CH_(4)、CO_(2)... 详细信息

采用溶胶凝胶法制备Ni/MgO和Co-Ni/MgO催化剂,考察了催化剂在甲烷二氧化碳低温干重整反应中的性能。结果表明1%Co-10%Ni/Mg O催化剂拥有较高的CH_(4)、CO_(2)转化率以及最高的H_(2)/CO,且在450℃下反应20 h后该催化剂的CH_(4)、CO_(2)转化率以及H_(2)/CO仍高于Ni/Mg O催化剂,且积碳量比Ni/MgO催化剂少4.3%。通过XRD、H_(2)-TPR、TEM、SEM、TG、RAMAN等表征分析发现适量Co的添加有利于提升催化剂表面活性组分的分散度和粒径,减少催化剂颗粒的团簇,且能抑制积碳的形成。通过对干重整反应过程中反应物表观活化能的计算,发现适量Co的添加能降低反应物的表观活化能,有利于提升Ni/MgO催化剂的低温甲烷干重整反应性能。

关键词：镍钴氧化镁低温干重整积碳

Exceptionally flame-retardant flexible polyurethane foam composites:synergistic effect of the silicone resin/graphene oxide coating

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Frontiers of Chemical Science and Engineering 2021年第4期15卷 969-983页

作者： Qian Wu Jincheng Zhang Shengpeng Wang Bajin Chen Yijun Feng Yongbing Pei Yue Yan Longcheng Tang huayu qiu Lianbin Wu Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education Hangzhou Normal UniversityHangzhou 311121China Collaborative Innovation Center of Zhejiang Province for Manufacturing of Fluorine Silicon Fine Chemicals and Materials Hangzhou Normal UniversityHangzhou 311121China Transfar Zhilian Co. Ltd.Hangzhou 311215China

A facile strategy was developed to fabricate flexible polyurethane(PU)foam composites with exceptional flame retardancy.The approach involves the incorporation of graphene oxide(GO)into a silicone resin(SiR)solution,which is then deposited onto a PU foam surface via the dip-coating technique and cured.Fourier-transform infrared spectroscopy,scanning electron microscopy,and Raman spectroscopy measurements demonstrated that the SiR and GO were successfully coated onto the PU skeleton and the intrinsic porous structure of the PU foam remained intact.The effects of SiR and GO on the mechanical and thermal stability and flame retardancy of PU composites were evaluated through compression tests,thermogravimetric analysis,vertical combustion tests,and the limiting oxygen index.The measurement results revealed that the composites(PU@SiR-GO)showed superior flame retardancy and thermal and mechanical stability compared to pristine PU or PU coated with SiR alone.The mechanical and thermal stability and the flame-retardant properties of the PU composites were enhanced significantly with increasing GO content.Based on the composition,microstructure,and surface morphology of PU@SiR-GO composites before and after combustion tests,a possible flame-retardance mechanism is proposed.This work provides a simple and effective strategy for fabricating flame retardant composites with improved mechanical performance.

关键词： flame retardancy flexible polyurethane foam graphene oxide silicone resin

Structures and isomerization of cabenoids H_2CLiBr

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Chinese Science Bulletin 1997年第3期42卷 207-210页

作者： qiu huayu and DENG ConghaoTheoretical Chemistry Group, Shandong University, Jinan 250100, China Theoretical Chemistry Group Shandong University Jinan China

ALTHOLIGH carbenoids as the active organometallic intermediates have been widely used in organic syntheses, up to now, only few simple saturated and unsaturated carbenoids, such as H2CLiF, Cl3CLi, HCLiF2 and HCCLiF, h... 详细信息

关键词： ab initio carbenoid three-membered ring isomerization.

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马克思主义阶级意识理论的发展及其现实意义

理论视野 2022年第1期 28-33页

作者：邱华宇孙代尧北京大学马克思主义学院

马克思主义阶级意识理论的发展经历了三个主要历史时期,形成了不同的理论主题:马克思恩格斯科学地揭示无产阶级的社会地位和历史作用,指出阶级意识是无产阶级从“自在”到“自为”的关键;19世纪末20世纪初,列宁和卢卡奇、葛兰西等在无... 详细信息

马克思主义阶级意识理论的发展经历了三个主要历史时期,形成了不同的理论主题:马克思恩格斯科学地揭示无产阶级的社会地位和历史作用,指出阶级意识是无产阶级从“自在”到“自为”的关键;19世纪末20世纪初,列宁和卢卡奇、葛兰西等在无产阶级革命的实践探索中,强调政党及知识分子对无产阶级意识形成的作用;20世纪60年代以来,西方学者对“结构-意识-行动”模式进行了反思。马克思主义阶级意识理论在21世纪仍然具有理论和实践价值,应从历史与现实的统一中动态看待无产阶级意识的演变,从联合和引导全球左翼力量的层面坚持工人组织的作用。

关键词：马克思主义无产阶级阶级意识当代资本主义

Anti-corrosive Hybrid Electrolytes for Rechargeable Aqueous Zinc Batteries

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Chemical Research in Chinese Universities 2021年第2期37卷 328-334页

作者： WANG Jia qiu huayu ZHAO Zhiming ZHANG Yuchen ZHAO Jingwen MA Yinglei LI Jiedong XING Min LI Guicun CUI Guanglei College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao266042P.R.China Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao266101P.R.China

Aqueous zinc(Zn)-metal cells with cost-effective components and high safety have long been a promising large-scale energy storage system,but Zn anodes are intrinsically unstable with common aqueous electrolytes,causing substantial underutilization of the theoretical capacity.In this work,we report a strictly neutral aqueous Zn electrolyte at a low cost by leveraging the dynamic hydrolysis equilibrium of a dual-salt Zn(Ac)2/NaAc(Ac:CH3COO−)formulation.With the pH regulation,the corrosion and hydrogen evolution encountered in Zn anodes can be suppressed significantly.This hybrid aqueous electrolyte not only enables dendrite-free Zn plating/stripping at a nearly 95%Coulombic efficiency[an increase of 24%compared to that of the single-salt 1 mol/L Zn(Ac)2 electrolyte],but also supports the reversible operation of Zn cells paired with either Na3V2(PO4)3 or iodine cathodes—the former delivers a high output voltage of 1.55 V with an energy level of 99.5 W·h/kg(based on the mass of the cathode),and the latter possesses a high specific capacity of 110.9 mA·h/g while yielding long-term cyclability(thousands of cycles).These findings open up a new avenue of modifying practical electrolytes having targeted properties to stabilize multivalent metal anodes.

关键词： pH regulation Aqueous Zn-based battery Na3V2(PO4)3 cathode