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Self-healing alginate-carboxymethyl chitosan porous scaffold as an effective binder for silicon anodes in lithium-ion batteries

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Rare Metals 2019年第9期38卷 832-839页

作者： zhao-Hui Wu Juan-Yu Yang Bing Yu Bi-Meng Shi chun-rong zhao Zhang-Long Yu Research and Development Center for Vehicle Battery and Energy Storage General Research Institute for Nonferrous Metals

Polymer binder plays a pivotal role in electrochemical performance of high-capacity silicon(Si)anode that usually suffers from severe capacity fading due to enormous substantial volume change of Si during *** an effort to find efficient polymer binder that could mitigate such capacity fading,alginate-carboxymethyl chitosan(Alg-C-chitosan)composite polymer was investigated as a low-cost watersoluble binder for silicon anodes in lithium-ion *** electrostatic interaction between carboxylate(-COO-)of Alg and protonated amines(-NH3+)of C-chitosan forms a selfhealing porous scaffold *** effect on the enhanced porous scaffold structure and self-healing electrostatic interaction of Alg-C-chitosan binder effectively can tolerate the tremendous volume change of Si and maintain an integrated electrode structure during cycling *** Si nanopowder electrodes with Alg-C-chitosan composite binder exhibit an excellent cycling stability,with a capacity of750 mAh·g-1 remaining after 100 th *** addition,an extraordinary areal capacity of 3.76 mAh·cm-2 is achieved for Si-based anodes with Alg-C-chitosan binder.

关键词： Binder Alginate Carboxymethyl chitosan Self-healing Scaffold Silicon anode

A high-performance lithium anode based on N-doped composite graphene

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Rare Metals 2024年第3期43卷 1030-1036页

作者： Can Jiao Hao-Bo Sun Li Zhang Shang-Qian zhao Guo-Yao Pang chun-rong zhao Shi-Gang Lu General Research Institute for Nonferrous Metals Beijing100088China China Automotive Battery Research Institute Co.Ltd Beijing101407China

Lithium(Li)metal is the most promising electrode for next-gene ration rechargeable *** order to push the commercialization of the lithium metal batteries,a kind of nitrogen(N)-doped composite graphene(NCG)adopted as the Li plating host was prepared to regulate Li metal nucleation and suppress dendrite ***,a new kind of sandwich-type composite lithium metal(STCL)electrode was developed to improve its *** STCL electrode can be used as convenient as a piece of Li foil but no dendrite *** a symmetric battery,the STCL electrode cycled for more than 4500 h with the overpotential of less than 40 *** due to the creative design,the STCL promises the Li-S battery with a prolonged cycling lifespan.

关键词： Lithium metal anode Lithiophilic N-doped composite graphene Sandwich-type composite lithium metal electrode

Electrochemical properties of high-loading sulfur–carbon materials prepared by in situ generation method

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Rare Metals 2023年第11期42卷 3877-3885页

作者： Can Jiao chun-rong zhao Li Zhang Shang-Qian zhao Guo-Yao Pang Hao-Bo Sun Shi-Gang Lu General Research Institute for Nonferrous Metals Beijing100088China China Automotive Battery Research Institute Co.Ltd Beijing101407China

A high sulfur content sulfur–carbon composite was synthesized via in situ generation method in aqueous *** the sulfur loading is up to 90%,the electrode still exhibits good cycling performance with a reversible capacity of about 623 mAh·g^(-1)after 100 *** further commercialize the Li–S battery,understanding the capacity degradation mechanism is very essential,especially with a high sulfur loading *** achieve this goal,the electrochemical performance of the high sulfur loading electrode was studied,and the structure change of the electrode after cycling was also examined by ex situ scanning electron microscopy(SEM)and other *** result shows that the Li_(2)S_(2)and Li_(2)S inhomogeneous precipitation contributes to the majority capacity fading of the high sulfur loading Li–S cells.

关键词： High loading Sulfur–carbon materials Electrochemical performance Capacity fading Lithium–sulfur battery

Electrochemical preparation of silicon nanowires from porous Ni/SiO2 blocks in molten CaCl2

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Rare Metals 2019年第8期38卷 776-782页

作者： Sheng Fang Han Wang Juan-Yu Yang Shi-Gang Lu Bing Yu Jian-Tao Wang chun-rong zhao R&D Center for Vehicle Battery and Energy Storage General Research Institute for Nonferrous Metals

Silicon nanowires(SiNWs)with diameter distributions ranging from 80 to 350 nm were prepared by electrochemical reduction of Ni/SiO2 in molten *** effect of the content of nickel additives on the morphology of produced silicon was *** quantities of SiNWs are obtained by the electrochemical reduction of Ni/SiO2 blocks with SiO2 to Ni molar ratio of 20 and *** additives repress the growth of irregular branches and promote longitudinal growth of *** morphologies and surfaces are influenced by the electrolysis *** become thicker with the increase of the electrolysis *** optimum temperature to prepare single crystal SiNWs with high aspect ratio and extraordinary surface quality seems to be 1173 *** amorphous layer of the silicon nanowire is thinner compared to the SiNWs obtained from the pure SiO2 *** produced SiNWs show a photoluminescence emission peak at about 758 nm at room *** work demonstrates the potentiality for the electrochemical reduction process to obtain large quantities of SiNWs with high quality.

关键词： Silicon nanowire Nickel additives SiO2 CaCl2 Electrochemical reduction

Inhibiting SHP2 reduces glycolysis, promotes microglial M1 polarization, and alleviates secondary inflammation following spinal cord injury in a mouse model

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Neural Regeneration Research 2025年第3期20卷 858-872页

作者： Xintian Ding chun Chen Heng zhao Bin Dai Lei Ye Tao Song Shuai Huang Jia Wang Tao You Department of Orthopedics The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Orthopedics Provincial Hospital Affiliated to Anhui Medical UniversityHefeiAnhui ProvinceChina

Reducing the secondary inflammatory response, which is partly mediated by microglia, is a key focus in the treatment of spinal cord injury. Src homology 2-containing protein tyrosine phosphatase 2(SHP2), encoded by PTPN11, is widely expressed in the human body and plays a role in inflammation through various mechanisms. Therefore, SHP2 is considered a potential target for the treatment of inflammation-related diseases. However, its role in secondary inflammation after spinal cord injury remains unclear. In this study, SHP2 was found to be abundantly expressed in microglia at the site of spinal cord injury. Inhibition of SHP2 expression using siRNA and SHP2 inhibitors attenuated the microglial inflammatory response in an in vitro lipopolysaccharide-induced model of inflammation. Notably, after treatment with SHP2 inhibitors, mice with spinal cord injury exhibited significantly improved hind limb locomotor function and reduced residual urine volume in the bladder. Subsequent in vitro experiments showed that, in microglia stimulated with lipopolysaccharide, inhibiting SHP2 expression promoted M2 polarization and inhibited M1 polarization. Finally, a co-culture experiment was conducted to assess the effect of microglia treated with SHP2 inhibitors on neuronal cells. The results demonstrated that inflammatory factors produced by microglia promoted neuronal apoptosis, while inhibiting SHP2 expression mitigated these effects. Collectively, our findings suggest that SHP2 enhances secondary inflammation and neuronal damage subsequent to spinal cord injury by modulating microglial phenotype. Therefore, inhibiting SHP2 alleviates the inflammatory response in mice with spinal cord injury and promotes functional recovery postinjury.

关键词： apoptosis glycolysis inflammatory response microglia neurons polarization spinal cord injury Src homology 2-containing protein tyrosine phosphatase 2

Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia zhao Taixi Feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

The cGAS-STING-interferon regulatory factor 7 pathway regulates neuroinflammation in Parkinson's disease

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Neural Regeneration Research 2025年第8期20卷 2361-2372页

作者： Shengyang Zhou Ting Li Wei Zhang Jian Wu Hui Hong Wei Quan Xinyu Qiao chun Cui Chenmeng Qiao Weijiang zhao Yanqin Shen Laboratory of Neurodegenerative and Neuroinjury Diseases Wuxi Medicine SchoolJiangnan UniversityWuxiJiangsu ProvinceChina

Interferon regulatory factor 7 plays a crucial role in the innate immune ***,whether interferon regulatory factor 7-mediated signaling contributes to Parkinson's disease remains *** we report that interferon regulatory factor 7 is markedly up-regulated in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced mouse model of Parkinson's disease and co-localizes with microglial *** the selective cyclic guanosine monophosphate adenosine monophosphate synthase inhibitor RU.521 and the stimulator of interferon genes inhibitor H151 effectively suppressed interferon regulatory factor 7 activation in BV2 microglia exposed to 1-methyl-4-phenylpyridinium and inhibited transformation of mouse BV2 microglia into the neurotoxic M1 *** addition,si RNA-mediated knockdown of interferon regulatory factor 7 expression in BV2 microglia reduced the expression of inducible nitric oxide synthase,tumor necrosis factorα,CD16,CD32,and CD86 and increased the expression of the anti-inflammatory markers ARG1 and *** together,our findings indicate that the cyclic guanosine monophosphate adenosine monophosphate synthase-stimulator of interferon genes-interferon regulatory factor 7 pathway plays a crucial role in the pathogenesis of Parkinson's disease.

关键词： cyclic guanosine monophosphate adenosine monophosphate synthase H151 interferon regulatory factor 7 M1 phenotype neurodegenerative disease neuroinflammation Parkinson’s disease RU521 STING type I interferon

A residual-based message passing algorithm for constraint satisfaction problems

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Communications in Theoretical Physics 2022年第3期74卷 77-86页

作者： chun-Yan zhao Yan-rong Fu Jin-Hua zhao College of Science University of Shanghai for Science and TechnologyShanghai 200093China Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Southern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou 510006China

Message passing algorithms,whose iterative nature captures complicated interactions among interconnected variables in complex systems and extracts information from the fixed point of iterated messages,provide a powerful toolkit in tackling hard computational tasks in optimization,inference,and learning *** the context of constraint satisfaction problems(CSPs),when a control parameter(such as constraint density)is tuned,multiple threshold phenomena emerge,signaling fundamental structural transitions in their solution *** solutions around these transition points is exceedingly challenging for algorithm design,where message passing algorithms suffer from a large message fiuctuation far from *** we introduce a residual-based updating step into message passing algorithms,in which messages with large variation between consecutive steps are given high priority in the updating *** the specific example of model RB(revised B),a typical prototype of random CSPs with growing domains,we show that our algorithm improves the convergence of message updating and increases the success probability in finding solutions around the satisfiability threshold with a low computational *** approach to message passing algorithms should be of value for exploring their power in developing algorithms to find ground-state solutions and understand the detailed structure of solution space of hard optimization problems.

关键词： constraint satisfaction problems model RB message passing algorithms residuals of messages

不同季节修仁品种茶叶香气成分的GC-MS分析

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西南农业学报 2017年第7期30卷 1538-1545页

作者：苏敏韦柳花刘初生杨春赖兆荣覃榆茏张颖彬广西桂林茶叶科学研究所广西桂林541004 中国农业科学院茶叶研究所浙江杭州310008

【目的】分析不同季节对修仁茶挥发性成分的影响,为从香气组分的角度评价修仁茶的适制性提供理论依据。【方法】采用GC-MS法对春、夏、秋3季的修仁茶树品种加工成的绿茶和红茶的香气进行分析研究。【结果】在不同季节加工的修仁绿茶中,... 详细信息

【目的】分析不同季节对修仁茶挥发性成分的影响,为从香气组分的角度评价修仁茶的适制性提供理论依据。【方法】采用GC-MS法对春、夏、秋3季的修仁茶树品种加工成的绿茶和红茶的香气进行分析研究。【结果】在不同季节加工的修仁绿茶中,春茶、夏茶和秋茶的香气物质种类都是55种,且3个季节绿茶的香气成分组成比较相似,都是醇类物质相对含量最高,分别是为45.83%、37.75%和42.39%;春茶和秋茶的主导香气成分以花香型的醇类物质为主,分别占各自主导香气成分64.50%、57.10%,夏茶的主导香气成分种类最多。不同季节修仁红茶的香气成分组成比较相似,均为醇类物质的相对含量最高,分别为54.35%、52.80%和51.98%,且所占比例较绿茶高;主导香气成分也较相似,都是以均以芳樟醇的氧化物、香叶醇、苯乙醇为主。【结论】修仁品种茶的适制性较强,春、夏和秋茶均可适制红茶,且春茶可适制绿茶。

关键词：修仁茶香气成分 GC-MS分析季节