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Achieving a Deeply Desodiated Stabilized Cathode material by the High Entropy Strategy for Sodium-ion Batteries

Angewandte Chemie 2024年第29期136卷

作者： Zhaoguo Liu Rixin Liu Dr. Sheng Xu Jiaming Tian Jingchang Li Haoyu Li Tao Yu Dr. Shiyong Chu Dr. Anita M. D'Angelo Prof. Wei Kong Pang Prof. Liang Zhang Prof. Shaohua Guo Prof. Haoshen Zhou College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Frontiers Science Center for Critical Earth Material Cycling Nanjing University Nanjing 210023 P. R. China Lab of Power and Energy Storage Batteries Shenzhen Research Institute of Nanjing University Shenzhen 518057 P. R. China Australian Synchrotron Australian Nuclear Science and Technology Organization 800 Blackburn Road Clayton Victoria 3168 Australia Institute for Superconducting & Electronic Materials University of Wollongong Wollongong NSW Australia Institute of Functional Nano& Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Joint International Research Laboratory of Carbon-Based Functional Materials and Devices Soochow University 199 Ren'ai Road Suzhou 215123 P. R. China

Manganese-based layered oxides are currently of significant interest as cathode materials for sodium-ion batteries due to their low toxicity and high specific capacity. However, the practical applications are impeded by sluggish intrinsic Na + migration and poor structure stability as a result of Jahn–Teller distortion and complicated phase transition. In this study, a high-entropy strategy is proposed to enhance the high-voltage capacity and cycling stability. The designed P2-Na 0.67 Mn 0.6 Cu 0.08 Ni 0.09 Fe 0.18 Ti 0.05 O 2 achieves a deeply desodiation and delivers charging capacity of 158.1 mAh g −1 corresponding to 0.61 Na with a high initial Coulombic efficiency of 98.2 %. The charge compensation is attributed to the cationic and anionic redox reactions conjunctively. Moreover, the crystal structure is effectively stabilized, leading to a slight variation of lattice parameters. This research carries implications for the expedited development of low-cost, high-energy-density cathode materials for sodium-ion batteries.

关键词： high entropy desodiated stability lattice-oxygen redox activity layered cathodes sodium-ion batteries

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Sustainable Afterglow Room-Temperature Phosphorescence Emission materials Generated Using Natural Phenolics

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Angewandte Chemie 2022年第31期134卷

作者： Keliang Wan Yingxiang Zhai Shouxin Liu Jian Li Shujun Li Bernd Strehmel Zhijun Chen Tony D. James Key Laboratory of Bio-based Material Science and Technology of Ministry of Education Northeast Forestry University Harbin 150040 P. R. China Department of Chemistry Institute for Coatings and Surface Chemistry Niederrhein University of Applied Sciences Adlerstr. 1 47798 Krefeld Germany Department of Chemistry University of Bath Bath BA2 7AY United Kingdom School of Chemistry and Chemical Engineering Henan Normal University Xinxiang 453007 P. R.China

Long-lived afterglow room-temperature phosphorescence (RTP) from natural phenolics has seldom been reported yet this is essential for the development of sustainable afterglow RTP materials. With this research, we have prepared sustainable afterglow RTP materials (GA@SA) with a lifetime of up to ≈934.7 ms by embedding gallic acid (GA) within a Ca 2+ -crosslinked sodium alginate (SA) matrix. Theoretical simulations indicate that the restricted carbonyl moieties of the GA and H-type aggregates of GA in a SA matrix promoted the spin orbit coupling (SOC) of GA and induced afterglow emission. Moreover, afterglow RTP emission could be produced by embedding different types of natural phenolics such as, tannic acid, caffeic acid and chlorogenic acid into Ca 2+ -crosslinked networks of SA. As an illustration of potential applications, GA@SA was used to prepare anti-counterfeit afterglow clothing and paper. This work provides an innovative method for the activation of long-lived afterglow RTP from sustainable phenolics.

关键词： Afterglow Emission Long Lifetime Natural Phenolics Sodium Alginate Sustainability

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Prediction of lute acoustic quality based on soundboard vibration performance using multiple choice model

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Journal of Forestry Research 2017年第4期28卷 855-861页

作者： Yang Yang Zhenbo Liu Yixing Liu Key Laboratory of Bio-based Material Science and Technology of National Ministry of Education Northeast Forestry UniversityHarbinHeilongjiangPeople’s Republic of China

The vibrational performance of wood materials critical affects the acoustic quality of a lute. The purpose of this research was to apply a multiple choice model to predict the quality of musical instruments based on data on lute soundboard vibrational properties of Paulownia wood. In the lute production, lute material selection mainly depends on the subjective evaluation of technicians, which is not only inefficient, but inaccurate. In this study, nine lutes were fabricated. Using the multiple selection model, the lute tone quality was predicted by the soundboard wood vibration data. Compared with the actual value, the dependent value predicted by the count of observations with the maximum probability had 22 erroneous judgments. The model precision is 87.78%. The results confirmed that the prediction model can be used as a guideline for the selection of the soundboard wood in musical instrument plants.

关键词： Multiple choice model Musical instrument quality Normal distribution Vibration performance

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Collaborative R＆D between multicrystalline silicon ingots and battery efficiency improvement--effect of shadow area in multicrystalline silicon ingots on cell efficiency

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Journal of Semiconductors 2018年第8期39卷 32-35页

作者： Xiang Zhang Chunlai Huang Lei Wang Min Zhou China University of Mining and Technology Xuzhou 221116 China Jiangsu Key Lab of Silicon Based Electronic Materials Jiangsu GCL Silicon Material Technology Development Co. Ltd.Xuzhou 221001 China State Key Lab of Silicon Materials and Department of Materials Science &Engineering Zhejiang University Hangzhou310058 China

We characterized strip-like shadows in cast multicrystalline silicon(mc-Si) ingots. Blocks and wafers were analyzed using scanning infrared microscopy, photoluminescence spectroscopy, laser scanning confocal microscopy, field-emission scanning electron microscopy, X-ray energy-dispersive spectrometry, and microwave photoconductivity decay technique. The effect on solar cell performance is discussed. The results show that the non-microcrystalline shadow region in Si ingots consists of precipitates of Fe, O, and C. The size of these Fe–O–C precipitates found at the shadow region is25 μm. Fe–O–C impurities can slightly reduce the minority carrier lifetime of the wafers while severely decrease in shunt resistance, leading to the increase in reverse current of the solar cells and degradation in cell efficiency.

关键词： silicon shadow iron–oxygen–carbon precipitates minority carrier lifetime cell efficiency

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The Effect of Pretreatment Method on the Decorative Effect of the Wax Furniture 3

The Effect of Pretreatment Method on the Decorative Effect o...

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2018 3rd International Conference on Insulating materials, material Application and Electrical Engineering, IMMAEE 2018

作者： Dao, Thanh Giang Nguyen, Tat Thang Song, Xiaoxue Wang, Xuting Song, Kuian Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin150040 China Northeastern College of Agriculture and Forestry Quang Ninh Viet Nam Vietnam National University of Forestry Ha Noi Viet Nam

In this study, the authors used hot wax selected from beeswax and insect wax. These two types of wax are blended with a 1: 1 ratio. Then use three methods of surface treatment before wax coating on the Ash wood surface including hydrothermal method, compound lye method, and plasma method. Through comparative analysis of 4 properties: color, adhesion, hardness and surface properties of the hydrophobic coating. The results show that the hot wax coating on the ash surface can maintain the original color of the wood. Comparison of three methods of wood treatment shows that: plasma method for the coating surface has the best adhesion, hydrothermal method for best surface hardness of the coating, and the hydrophobicity of hot wax after hydrothermal pretreatment is the best. © Published under licence by IOP Publishing Ltd.

关键词： Adhesion

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Study material ratio green bean powder and polylactic acid powder for the 3D printing technology selective laser sintering 3

Study material ratio green bean powder and polylactic acid p...

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2018 3rd International Conference on Insulating materials, material Application and Electrical Engineering, IMMAEE 2018

作者： Dinh, Ba Bach Guo, Yanling Nguyen, Tat Thang Zhang, Hui Yu, Yueqiang College of Mechanical and Electrical Engineering Northeast Forestry University Harbin150040 China Vietnam National University of Forestry Hanoi156200 Viet Nam Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin150040 China

The world's population is increasing, so the demand for material also increases. Currently scientists are therefore searching for new materials that have a stable supply of large quantities. The combination of green bean powder with polylactic acid powder has a composition ratio (10/90;20/80;70/30 and 40/60 (wt/wt)) used as input material for 3d printing technology SLS. High-power laser experiments were performed on a mixture of green bean powder and polylactic acid powder (GBCP), which produced a new synthetic material both biodegradable. Then, the GBCP composite material was tested for mechanical properties in each type of mixing ratio, observing the cross section of the material structure. Results obtained at 20/80 (wt/wt) mixing ratio of GBCP composite have a tensile strength of 2.5705 MPa, bending strength of 5 MPa and impact strength of 0.501kJ/m2. © Published under licence by IOP Publishing Ltd.

关键词： Sintering

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Flexible, ultrathin bioelectronic materials and devices for chronically stable neural interfaces

Brain‐X

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Brain‐X 2023年第4期1卷

作者： Lianjie Zhou Zhongyuan Wu Mubai Sun Jaejin Park Mengdi Han Ming Wang Junsheng Yu Zengfeng Di Yongfeng Mei Wubin Bai Xinge Yu Ki Jun Yu Enming Song Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai China Contribution: Investigation Visualization Writing - original draft Institute of Agro-food Technology Jilin Academy of Agricultural Sciences Changchun Jilin China Contribution: Data curation Investigation Functional Bio-integrated Electronics and Energy Management Lab School of Electrical and Electronic Engineering Yonsei University Seoul Korea Department of Biomedical Engineering College of Future Technology Peking University Beijing China Contribution: Resources Validation State Key Laboratory of Integrated Chips and Systems Frontier Institute of Chip and System Fudan University Shanghai China State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China (UESTC) Chengdu Sichuan China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Department of Material Science Fudan University Shanghai China Department of Applied Physical Sciences University of North Carolina at Chapel Hill Chapel Hill North Carolina USA Department of Biomedical Engineering City University of Hong Kong Hong Kong SAR China Wubin Bai Xinge Yu Ki Jun Yu and Enming Song. Contribution: Conceptualization Methodology Resources Supervision Writing - review & editing

Advanced technologies that can establish intimate, long-lived functional interfaces with neural systems have attracted increasing interest due to their wide-ranging applications in neuroscience, bioelectronic medicine, and the associated treatment of neurodegenerative diseases. A critical challenge of significance remains in the development of electronic platforms that offer conformal contact with soft brain tissue for the sensing or stimulation of brain activities and chronically stable operation in vivo, at scales that range from cellular-level resolution to macroscopic areas. This review summarizes recent advances in this field, with an emphasis on the use of demonstrated concepts, constituent materials, engineered designs, and system integration to address the current challenges. The article begins with an overview of recent bioelectronic platforms with unique form factors, ranging from filamentary probes to conformal sheets and three-dimensional frameworks for alleviating the mechanical mismatch between interface materials and neural tissues. Next, active interfaces which utilize inorganic/organic semiconductor-enabled devices are reviewed, highlighting various working principles of recording mechanisms including capacitively and conductively coupled sensing enabled by high transistor matrices at high spatiotemporal resolution. The subsequent section presents approaches to biological integration which use active materials for multiplexed addressing, local amplification and multimodal operation with high-channel-count and large-scale electronic systems in a safe fashion that provides multi-decade stable performance in both animal models and human subjects. The advances summarized in this review will guide the future direction of this technology and provide a basis for next-generation chronic neural interfaces with long-lived high-performance operation.

关键词： neural interface flexibility passive electrodes active recording barrier materials chronic stability

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Effects of laccase incubated from white rot fungi on the mechanical properties of fiberboard

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Journal of Forestry Research 2017年第6期28卷 1282-1289页

作者： Xiaodong Zhu Song Han Yu Liu Guangsheng Chen Key Laboratory of Bio-based Material Science and Technology (Ministry of Education) Northeast Forestry University Harbin 150040 People’s Republic of China College of Forestry Northeast Forestry UniversityHarbin 150040 People’s Republic of China

White rot fungi were optimized to cultivate highly active laccase. The characteristics of laccase incubated by continuous culture were compared with those of direct culture. The enzyme activity of laccase incubated by continuous culture technology reached a higher value on the fifth day of the growth. The optimization incubation time of high activity laccase was the eleventh day. A large amount of highly active laccase can be obtained in a relatively short time by continuous culture to replace traditional laccase. After laccase treatment, the lignin composition of wood fibers were oxidation-catalyzed by laccase. The number of chemical-bonding points between the wood fibers was increased. The wood fibers treated by laccase were fabricated into boards and their mechanical properties improved with the laccase-incubation times. Compared with the fiberboards made from fibers that were pre-treated by laccase of incubation 5 days, the static bending strength of those that were pre-treated by laccase of incubation 11 days was increased by 18.95%, the elastic modulus was increased by 35.49%, and the internal bond strength was increased by 44.11%.

关键词： White rot fungus Laccase Fiberboard Mechanical property

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Nitrogen doped porous carbon derived from bamboo shoot as solid base catalyst for Knoevenagel condensation and transesterification reactions

Nitrogen doped porous carbon derived from bamboo shoot as so...

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首届中国竹藤产业创新发展大会暨第三届中国竹藤资源利用学术研讨会

作者： Bingbing Mi Xiufang Chen Changle Jiang Jingxin Wang Xiujuan Chen Bo Zhang Xianmiao Liu Zhijia Liu Benhua Fei International Centre for Bamboo and Rattan BeijingChina100102 Key Laboratory of Bio-based Material Key Laboratory of Bio-based Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChine School of Natural Resources West Virginia UniversityMorgantownWVUSA26506 Material Science and Engineering Benjamin M.Statler College of Engineering and Mineral ResourcesWes International Centre for Bamboo and Rattan BeijingChina100102

Highly porous nitrogen doped carbon materials derived from bamboo shoots were manufactured through simultaneous carbonization and activation with one-pot synthesis *** results showed that the obtained carbons had a large specific surface area,a high N content and hierarchically porous *** the obtained N-doped carbons were used as catalysts for the Knoevenagel condensation and transesterification reactions,they exhibited excellent activity after *** manufacturing process affected on its catalyst activity and the maximum conversion of 16.1%was found to *** BSNC-700 were deprotonated by tBuOK with a concentration of 1.0M,the catalyst conversion increased from 16.1%to 79.9%.the deprotonated base catalyst could also transesterfied ethy acetoacetatc into the corresponding *** unsaturated alcohol was used,BSNC-700-tBu(0.1M)had a relatively high conversion and *** results from this research will provide a guideline to develop bamboo shoot as a precursor to fabricate a superb solid base catalyst.

关键词： Bamboo shoot Nitrogen doped Solid base catalyst Knoevenagel condensation Transesterification

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Examine temperature field at sealing surfaces treated by laser sealing using Ansys software 3

Examine temperature field at sealing surfaces treated by las...

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2018 3rd International Conference on Insulating materials, material Application and Electrical Engineering, IMMAEE 2018

作者： Nguyen, Trong Tuan Nguyen, Tat Thang Le, Ngoc Hoan To, Quoc Huy Hua, Jun Department of Mechanical Design and Theory College of Mechanical Engineering Northeast Forestry University Harbin150040 China Vietnam Academy of Forest Sciences Ha Noi Viet Nam Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Harbin150040 China Vietnam National University of Forestry Ha Noi Viet Nam Forest Industries Research Centre University of the Sunshine Coast Australia

Upon deposition of laser irradiation on sealing surface, energy build-up heats up the structural radiation area, significantly and rapidly changing the mechanical properties of the materials in the irradiated area. Consequently, the change of material properties leads to the liquidation of the radiated surfaces which is responsible for the binding efficacy of EVA glue. It is therefore important to investigate the temperature field during the transient sealing period. In our study we demonstrate a method of temperature field investigation by finite element analysis using Ansys software. Three-dimensional finite element simulation is employed to investigate the temperature fields and heat flux in a 0.2mm-thick adhesive layer on surface of a sealing edge with total thickness of 0.5mm x 22mm width. The laser beam was emitted by a device with laser power of 3kw, scanning speed 100mm/s, 980nm wavelength, induced temperature ranging from 100°C to 160°C. Results proved optimal temperature of 135°C, inducing total heat flux of 8731.8 w/m2 which is suitable for melting adhesive for optimized binding efficacy. Our study introduced the optimal temperature, heat flux generated by the laser beam yet retaining performance of adhesive, as well as ascertaining binding efficacy and durable linkage between EVA glue and surface of wooden boards. © Published under licence by IOP Publishing Ltd.

关键词： Heat flux

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