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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

Screening and Analysis of Proteins Interacting with TaPDK from Physiological Male Sterility Induced by CHA in Wheat

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Journal of Integrative Agriculture 2013年第6期12卷 941-950页

作者： zhang long-yu zhang Gai-sheng ZHAO Xin-liang YANG Shu-ling College of Agronomy Northwest A&F University/Wheat Breeding Engineering Research Center Ministry of Education/Key Laboratory of Crop Heterosis of Shaanxi Province

To further research the regulatory network of pyruvate dehydrogenase kinase （designated as TaPDK） in physiological male-sterility （PHYMS） of wheat induced by chemical hybridizing agent （CHA） SQ-1, an anther cDNA library was constructed, and the proteins interacting with TaPDK were screened via yeast two-hybrid technique. Subsequently, a few candidate proteins in nucleotide expression levels were detected by real-time quantitative PCR. Yeast-two hybrid screening was performed by mating yeast strain Y2HGold containing BD-TaPDK bait plasmid with yeast strain Y187 including anther cDNA library plasmid. Diploid yeast cells were plated on synthetic dropout nutrient medium （SD/-Ade/-His/-Leu/-Trp）（QDO）, and further were incubated on QDO medium containing AbA and X-α-Gal. The interactions between TaPDK and the proteins obtained from positive colonies were further confirmed by co-transformation validation. After plasmids DNA were extracted from blue colonies and sequenced, the sequences results were analyzed by bioinformatic methods. Finally, 24 colonies were obtained, including eight genes, namely non-specific lipid-transfer protein precursor （TanLTP）, polyubiquitin （TaPUbi）, glyceraldehyde-3-phosphate dehydrogenase, proliferating cell nuclear antigen （TaPCNA）, CBS domain containing protein （TaCBS）, actin, guanine nucleotide-binding protein beta subunit, chalcone synthase, and three new genes with unknown function. The results of quantitative RT-PCR showed that the expression levels of TanLTP, TaPUbi, and TaPCNA were obviously up-regulated in PHYMS anther, and TaCBS expression was only increased at the tricellular stage in PHYMS anther compared with in fertile lines. Whereas, the expression of TaPDK was obviously down-regulated in PHYMS lines. Collectively, these datas indicated that the majority of candidate proteins might be related to pollen abortion in PHYMS lines, which further suggested that TaPDK plays multiple roles in pollen development, besides participating in r

关键词： wheat (Triticum aestivum L.) chemical hybridizing agent pyruvate dehydrogenase kinase yeast two-hybrid pollen abortion

Electrolytic silicon/graphite composite from SiO_(2)/graphite porous electrode in molten salts as a negative electrode material for lithium-ion batteries

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Rare Metals 2022年第2期41卷 438-447页

作者： Ning Wang yu-Yang Liu Zhi-Xia Shi zhang-long yu Hua-Ying Duan Sheng Fang Juan-yu Yang Xing-Ming Wang GRIREM Advanced Materials Co. Ltd.China Automotive Battery Research Institute Co.Ltd.General Research Institute for Nonferrous MetalsBeijing 100088China GRINM Resources and Environment Tech.Co.Ltd. General Research Institute for Nonferrous MetalsBeijing 100088China China Automotive Battery Research Institute Co.Ltd. General Research Institute for Nonferrous MetalsBeijing 100088China

Nano-silicon(nano-Si)and its composites have been regarded as the most promising negative electrode materials for producing the next-generation Li-ion batteries(LIBs),due to their ultrahigh theoretical ***,the commercial applications of nano Si-based negative electrode materials are constrained by the low cycling stability and high *** molten salt electrolysis of SiO_(2)is proven to be suitable to produce nano-Si with the advantages of in-situ microstructure control possibilities,cheap affordability and scale-up process ***,an economical approach for electrolysis,with a SiO_(2)/graphite porous electrode as cathode,is adopted to produce nano-Si/graphite composite negative electrode materials(SGNM)in this *** electrolytic product of the optimized porous electrode is taken as the negative electrode materials for LIBs,and it offers a capacity of 733.2 mAh·g^(-1)and an initial coulombic efficiency of 86.8%in a coin-type ***,the capacity of the SGNM retained 74.1%of the initial discharging capacity after 50 cycles at 0.2C,which is significantly higher than that of the simple mixture of silicon and graphite obtained from the formation of silicon carbide(SiC)between nano-Si and graphite ***,this new approach can be applied to a large-scale production.

关键词： Li-ion battery Negative electrode materials Molten salt electrolysis Nano-silicon

Growth, Cadmium Accumulation and Physiology of Marigold (Tagetes erecta L.) as Affected by Arbuscular Mycorrhizal Fungi

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Pedosphere 2011年第3期21卷 319-327页

作者： LIU Ling-Zhi GONG Zong-Qiang zhang yu-long LI Pei-Jun Shenyang Agricultural University Shenyang 110866 (China) Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 (China)

A pot experiment was carried out to study the effects of three arbuscular mycorrhizal fungi （AMF）, including Glomus intraradices, Glomus constrictum and Glomus mosseae, on the growth, root colonization and Cd accumulation of marigold （Tagetes erecta L.） at Cd addition levels of 0, 5 and 50 mg kg-1 in soil. The physiological characteristics, such as chlorophyll content, soluble sugar content, soluble protein content and antioxidant enzyme activity, of Tagetes erecta L. were also investigated. The symbiotic relationship between the marigold plant and arbuscular mycorrhizal fungi was well established under Cd stress. The symbiotic relationship was reflected by the better physiobiochemical parameters of the marigold plants inoculated with the three AMF isolates where the colonization rates in the roots were between 34.3% and 88.8%. Compared with the non-inoculated marigold plants, the shoot and root biomass of the inoculated marigold plants increased by 15.2%- 47.5% and 47.8%-130.1%, respectively, and the Cd concentration and accumulation decreased. The chlorophyll and soluble sugar contents in the mycorrhizal marigold plants increased with Cd addition, indicating that AMF inoculation helped the marigold plants to grow by resisting Cd stress. The antioxidant enzymes reacted differently with the three AMF under Cd stress. For plants inoculated with G. constrictum and G. mosseae, the activities of superoxide dismutase （SOD） and catalase （CAT） increased with increasing Cd addition, but peroxidase （POD） activity decreased with increasing Cd addition. For plants inoculated with G. intraradices, three of the antioxidant enzyme activities were significantly decreased at high levels of Cd addition. Overall, the activities of the three antioxidant enzymes in the plants inoculated with AMF were higher than those of the plants without AMF inoculation under Cd stress. Our results support the view that antioxidant enzymes have a great influence on the biomass of plants, and AMF can

关键词： antioxidant enzyme Cd stress metal accumulation phytoremediation root colonization

Synthesis and characterization of novel polyimides based on thiazole-containing diamine

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Chinese Chemical Letters 2007年第10期18卷 1203-1204页

作者： Xin Zhao Yan Feng Li Shu Jiang zhang Xiao long-Wang yu Shao State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringInstitute of Biochemical Engineering ＆ Environmental Technology Lanzhou University Lanzhou 730000 China

A new kind of aromatic diamine monomer containing thiazole unit, 2-amino-5-（4-aminophenyl）-thiazole （AAPT）, was synthesized in three steps, starting from 4-nitroacetophenone. A novel thiazole-containing polyimide was prepared via the polycondensation of AAPT with 6FDA by one-step method. The resulting polyimide exhibits excellent solubility, film-forming capability and high thermal resistance.

关键词： Thiazole Thiazole-containing monomer Synthesis Aromatic diamine

Soil Phosphorus Distribution as Affected by Irrigation Methods in Plastic Film House

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Pedosphere 2011年第6期21卷 712-718页

作者： YANG Li-Juan zhang yu-long LI Fu-Sheng J. H. LEMCOFF College of Land Recourses and Environmental Science Shenyang Agricultural University Shenyang 110161 （China） College of Agriculture Guangxi University Nanning 530005 （China） Institute of Soil Water and Environmental Sciences Volcani Center Bet Dagan 50250 （Israel）

Water-saving irrigation methods have been increasingly used for vegetable cultivation in greenhouse or plastic film house. However, there is limited information concerning the effect of water-saving irrigation methods on soil phosphorus （P） behavior. In this experiment, drip and subsurface irrigation methods were applied, with furrow irrigation method as control, in Mollic Gleysols. Soil P distribution throughout the depth was significantly affected by irrigation methods. Total, Olsen, organic and inorganic P contents were greater in the topsoil （0-10 and 10-20 cm） than in the subsoil （20-30, 30-40, 40-50 and 50-60 cm）. The Olsen P content throughout 0-60 cm layer under drip and subsurface irrigation treatments was lower than that under the furrow irrigation treatment. However, the total, organic and inorganic P contents from 20 to 60 cm under drip irrigation treatment were higher than or close to those under furrow irrigation treatment, but were lower under subsurface irrigation treatment than under furrow irrigation treatment. Under subsurface irrigation treatment, the contents of total, organic and inorganic P at the 0-10 cm layer were 78.0%, 1.3% and 3.7% greater than those at the 10-20 cm layer, respectively. But Olsen P content at the 10-20 cm layer was 5.7% larger than that at the 0-10 cm layer. These suggested that soil P behavior could be manipulated by soil water management to some extent. 在

关键词： drip irrigation furrow irrigation soil P forms subsurface irrigation tomato

The Production of Organic-Inorganic Compound Film-Coated Urea and the Characteristics of Its Nutrient Release

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Agricultural Sciences in China 2009年第6期8卷 703-708页

作者： ZOU Hong-tao, WANG Yao-sheng, SONG Hao-wen, HAN Yan-yu, yu Na, zhang yu-ling, DANG Xiu-li, HUANG Yi and zhang yu-long College of Land and Environmental Sciences, Shenyang Agricultural University/Liaoning Key Laboratory of Agricultural Resources and Environment/Northeast Key Laboratory of Soil and Environment, Ministry of Agriculture, Shenyang 110161, P.R.China [a]College of Land and Environmental Sciences Shenyang Agricultural University/Liaoning Key Laboratory of Agricultural Resources and Environment/Northeast Key Laboratory of Soil and Environment Ministry of Agriculture Shenyang 110161 P.R. China

The effect of different concentrations of natural macromolecular compound on the characteristics of nutrient release in the membrane materials of organic-inorganic compound film-coated urea was discussed, and the optimal concentrations for better nutrient release was proposed. The characteristics of nutrient release of film-coated urea were evaluated by soil column leaching experiment. Organic-inorganic compound film-coated urea showed good characteristics of nutrient release, which could be well simulated by Logistic curve. The two parameters in this curve, a and r, can be used to present nutrient release of film-coated urea, and followed the order of B 〉 C 〉 A and C 〈 B 〈 A, respectively, indicating that the release was stronger with the increasing concentration of natural macromolecular compound in the membrane, which implied better controllability of nutrient release. The concentration of 5% of natural macromolecular compound showed better characteristic of nutrient release and can be utilized as a membrane material combined with inorganic mineral powders to develop film-coated slow-release fertilizer.

关键词： organic-inorganic compound film-coated urea nutrient release characteristics

Tomato Root Response to Subsurface Drip Irrigation

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Pedosphere 2004年第2期14卷 205-212页

作者： ZHUGEyu-Ping zhangXu-Dong zhangyu-long LIJun YANGLi-Juan HUANGYi LIUMing-Da KeyLaboratoryofTerrestrialEcologicalProcess InstituteofAppliedEcologyChineseAcademyofSciencesShenyang110016（China）.E-mail：zgyp@*** LandandEnvironmentalCollege ShenyangAgriculturalUniversityShenyang110161（China）

Four depth treatments of subsurface drip irrigation pipes were designated as 1) at 20,2) 30 and 3) 40 cm depths all with a drip-proof flumes underneath,and 4) at 30 cm without a drip-proof flume to investigate the responses of a tomato root system to different technical parameters of subsurface drip irrigation in a glass greenhouse,to evaluate tomato growth as affected by subsurface drip irrigation,and to develop an integrated subsurface drip irrigation method for optimal tomato yield and water use in a glass greenhouse. Tomato seedlings were planted above the subsurface drip irrigation pipe. Most of the tomato roots in treatment 1 were found in the top 0-20 cm soil depth with weak root activity but with yield and water use efficiency (WUE) significantly less (P ---- 0.05) than treatment 2; root activity and tomato yield were significantly higher (P = 0.05) with treatment 3 compared to treatment 1; and with treatment 2 the tomato roots and shoots grew harmoniously with root activity,nutrient uptake,tomato yield and WUE significantly higher (P= 0.05) or as high as the other treatments. These findings suggested that subsurface drip irrigation with pipes at 30 cm depth with a drip-proof flume placed underneath was best for tomato production in greenhouses. In addition,the irrigation interval should be about 7-8 days and the irrigation rate should be set to 225 m3 ha-1 per event.

关键词： greenhouse root system response soil water subsurface drip irrigation

The Research of Hybrid Energy Management System Based on Super Capacitor

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科技信息 2013年第5期 245-246页

作者： zhang yu-long WANG Yin-shan WU Ze-xu Tianjin University of Technology and Education

This paper designs energy management system of the super capacitance in parallel hybrid electric vehicle,through dynamic instantaneous optimal control strategy,ameliorate the comprehensive efficiency of hybrid system,improve the vehicle fuel *** using software matlab6.5 / advisor2002 modeling simulation and verify,which indicates that the super capacitor hybrid huge market prospects and practical significance.

关键词：英语学习学习方法阅读知识阅读材料