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| 1 | Grain size-dependent electrical resistivity of bulk nanocrystalline Gd metals显示文摘The electrical resistivity of the as-consolidated and coarse-grained bulk gadolinium(Gd) metals was studied in the temperature range of 3-315K.The experimental results showed that with decrease in the grain size of Gd grains from micrometer to nanometer range,the room temperature electrical resistivity increased from 209.7 to 333.0 μΩcm,while the electrical resistivity at the low temperature of 3K was found to increase surprisingly from 16.5 to 126.3 μΩcm.The room temperature coefficient resistivity(TCR) values were obtained as 39.2×10-3,5.51×10-3 and 33.7×10-3K-1.The ratios of room temperature to residual resistivity [RRR=ρ(300K)/ρ(3K)] are 2.64,11.0,respectively,for the as-consolidated samples at 280℃ and 700℃ with respect to that of the coarse-grained sample.All results indicate the remarkable influence of the nanostructure on the electrical resistivity of Gd due to the finite size effect and large fraction of grain boundaries. | Hong Zeng Ying Wu Jiuxing Zhang Chunjiang Kuang Ming Yue Shaoxiong Zhou | 2013 | Progress in Natural Science:Materials International2013，23，1： | 2 |
| 2 | Sandwich-structured nanocomposites of N-doped graphene and nearly monodisperse Fe304 nanoparticles as high-performance Li-ion battery anodes显示文摘Iron oxides have attracted considerable interest as abundant materials forhigh-capacity Li-ion battery anodes. However, their fast capacity fading owingto poorly controlled reversibility of the conversion reactions greatly hinderstheir application. Here, a sandwich-structured nanocomposite of N-dopedgraphene and nearly monodisperse Fe304 nanoparticles were developed ashigh-performance Li-ion battery anode. N-doped graphene serves as a conductingframework for the self-assembled structure and controls Fe304 nucleationthrough the interaction of N dopants, surfactant molecules, and iron precursors.Fe304 nanoparticles were well dispersed with a uniform diameter of -15 nm.The unique sandwich structure enables good electron conductivity and Li-ionaccessibility and accommodates a large volume change. Hence, it delivers goodcycling reversibility and rate performance with a capacity of -1,227 m·h·g^-1and 96.8% capacity retention over 1,000 cycles at a current density of 3 A-g-1.Our work provides an ideal structure design for conversion anodes or otherelectrode materials requiring a large volume change. | Wen Qi Xuan Li Hui Li Weikang Wu Pei Li Ying Wu Chunjiang Kuang Shaoxiong Zhou Xiaolin Li | 2017 | Nano Research2017，10，9： | 2 |
| 3 | Facile synthesis of CoFe_2O_4 nanoparticles anchored on graphene sheets for enhanced performance of lithium ion battery显示文摘Recently, metal oxides as high capacity anode materials had been investigated for lithium ion batteries.However, the fast capacity fading upon cycling leaded poor durability, which hindered their application as higher energy density of lithium ion battery. In this paper, a nanostructured nanocomposite with graphene supported CoFe_2O_4 nanoparticles(NPs) was prepared via simple hydrothermal reaction. The uniform CoFe_2O_4 NPs were anchored on graphene sheets, which brought a good performance on cyclability. Combined with the optimization of graphene content, the anode delivered a better capacity retention of 944 m A h g^(-1)over 50 cycles at current density of 100 m A g^(-1)and the good reversible capacity as 990 m A h g^(-1)when the rate returned from 5 A g^(-1)to 0.1 A g^(-1)after 60 cycles. The present work provided a desired structure for conversion anode materials or other electrode materials of large volume change. | Wen Qi Pei Li Ying Wu Hong Zeng Liting Hou Chunjiang Kuang Pei Yao Shaoxiong Zhou | 2016 | Progress in Natural Science:Materials International2016，26，5： | 1 |
| 4 | LettuceGDB:The community database for lettuce genetics and omics显示文摘As a globally popular leafy vegetable and a representative plant of the Asteraceae family,lettuce has great economic and academic significance.In the last decade,high-throughput sequencing,phenotyping,and other multi-omics data in lettuce have accumulated on a large scale,thus increasing the demand for an integrative lettuce database.Here,we report the establishment of a comprehensive lettuce database,LettuceGDB(https://www.lettucegdb.com/).As an omics data hub,the current LettuceGDB includes two reference genomes with detailed annotations;re-sequencing data from over 1000 lettuce varieties;a collection of more than 1300 worldwide germplasms and millions of accompanying phenotypic records obtained with manual and cutting-edge phenomics technologies;re-analyses of 256 RNA sequencing datasets;a complete miRNAome;extensive metabolite information for representative varieties and wild relatives;epigenetic data on the genome-wide chromatin accessibility landscape;and various lettuce research papers published in the last decade.Five hierarchically accessible functions(Genome,Genotype,Germplasm,Phenotype,and O-Omics)have been developed with a user-friendly interface to enable convenient data access.Eight built-in tools(Assembly Converter,Search Gene,BLAST,JBrowse,Primer Design,Gene Annotation,Tissue Expression,Literature,and Data)are available for data downloading and browsing,functional gene exploration,and experimental practice.A community forum is also available for information sharing,and a summary of current research progress on different aspects of lettuce is included.We believe that LettuceGDB can be a comprehensive functional database amenable to data mining and database-driven exploration,useful for both scientific research and lettuce breeding. | Zhonglong Guo Bo Li Jianjun Du Fei Shen Yongxin Zhao Yang Deng Zheng Kuang Yihan Tao Miaomiao Wan Xianju Lu Dong Wang Ying Wang Yingyan Han Jianhua Wei Lei Li Xinyu Guo Chunjiang Zhao Xiaozeng Yang | 2023 | Plant Communications2023，4，1： | 0 |
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