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| 1 | Improved Na+/K+ Storage Properties of ReSe2–Carbon Nanofibers Based on Graphene Modifications显示文摘Rhenium diselenide(ReSe2) has caused considerable concerns in the field of energy storage because the compound and its composites still suffer from low specific capacity and inferior cyclic stability.In this study,ReSe2 nanoparticles encapsulated in carbon nanofibers were synthesized successfully with simple electrospinning and heat treatment.It was found that graphene modifications could affect considerably the microstructure and electrochemical properties of ReSe2–carbon nanofibers.Accordingly,the modified compound maintained a capacity of 227 mAhg-1 after 500cycles at 200 mAg-1 for Na+storage,230 mAh g-1 after 200 cycles at 200 mAg-1,212 mAh g-1 after 150 cycles at 500 mAg-1 for K+ storage,which corresponded to the capacity retention ratios of 89%,97%,and 86%,respectively.Even in Na+full cells,its capacity was maintained to 82% after 200 cycles at 1 C(117 mAg-1).The superior stability of ReSe2–carbon nanofibers benefitted from the extremely weak van der Waals interactions and large interlayer spacing of ReSe2,in association with the role of graphene-modified carbon nanofibers,in terms of the shortening of electron/ion transport paths and the improvement of structural support.This study may provide a new route for a broadened range of applications of other rhenium-based compounds. | Yusha Liao Changmiao Chen Dangui Yin Yong Cai Rensheng He Ming Zhang | 2019 | Nano-Micro Letters2019,11,2: | 5 |
| 2 | Flotation behavior of four dodecyl tertiary amines as collectors of diaspore and kaolinite显示文摘由一系列第三级的胺(DRN,兽穴, DPN 和 DBN ) 之一的水铝石和 kaolinite 的筹款被调查。第三级的胺与水铝石相比为 kaolinite 显示出更好漂浮的恢复。最大的恢复 D 值在从 3 ~ 8 的一个 pH 范围上是 45% 。英尺红外系列在 kaolinite 和水铝石的表面上证实氢氧根组的存在。希腊语的第六个字母潜在的大小证明矿物质表面否定地在一个宽 pH 范围上被控告。氢氧根组的电离主要说明控告机制的表面。第三级的胺的吸附在在一个收集者之间的静电的效果对静电的效果和差别主要到矿物质表面上到期,二种矿物质能解释筹款分离。从取代者组的引入的电子、位的效果为四第三级的胺导致不同收集的力量。 | Changmiao Liu Feng Ansheng Guo Zhenxu Cao Xuefeng Hu Yuehu | 2011 | Mining Science and Technology2011,21,2: | 5 |
| 3 | Three-Dimensional Self-assembled Hairball-Like VS4 as High-Capacity Anodes for Sodium-Ion Batteries显示文摘Sodium-ion batteries(SIBs)are considered to be attractive candidates for large-scale energy storage systems because of their rich earth abundance and consistent performance.However,there are still challenges in developing desirable anode materials that can accommodate rapid and stable insertion/extraction of Na+and can exhibit excellent electrochemical performance.Herein,the self-assembled hairball-like VS4 as anodes of SIBs exhibits high discharge capacity(660 and 589 mAh g−1 at 1 and 3 A g−1,respectively)and excellent rate property(about 100%retention at 10 and 20 A g−1 after 1000 cycles)at room temperature.Moreover,the VS4 can also exhibit 591 mAh g−1 at 1 A g−1 after 600 cycles at 0°C.An unlike traditional mechanism of VS4 for Na+storage was proposed according to the dates of ex situ characterization,cyclic voltammetry,and electrochemical kinetic analysis.The capacities of the final stabilization stage are provided by the reactions of reversible transformation between Na2S and S,which were considered the reaction mechanisms of Na–S batteries.This work can provide a basis for the synthesis and application of sulfur-rich compounds in fields of batteries,semiconductor devices,and catalysts. | Shuangshuang Ding Bingxin Zhou Changmiao Chen Zhao Huang Pengchao Li Shuangyin Wang Guozhong Cao Ming Zhang | 2020 | Nano-Micro Letters2020,12,3: | 3 |
| 4 | Enabling Multi-Chemisorption Sites on Carbon Nanofibers Cathodes by an In-situ Exfoliation Strategy for High-Performance Zn–Ion Hybrid Capacitors显示文摘Carbon nanofibers films are typical flexible electrode in the field of energy storage,but their application in Zinc-ion hybrid capacitors(ZIHCs)is limited by the low energy density due to the lack of active adsorption sites.In this work,an in-situ exfoliation strategy is reported to modulate the chemisorption sites of carbon nanofibers by high pyridine/pyrrole nitrogen doping and carbonyl functionalization.The experimental results and theoretical calculations indicate that the highly electronegative pyridine/pyrrole nitrogen dopants can not only greatly reduce the binding energy between carbonyl group and Z n2+by inducing charge delocalization of the carbonyl group,but also promote the adsorption of Zn2+by bonding with the carbonyl group to form N–Zn–O bond.Benefit from the multiple highly active chemisorption sites generated by the synergy between carbonyl groups and pyridine/pyrrole nitrogen atoms,the resulting carbon nanofibers film cathode displays a high energy density,an ultralong-term lifespan,and excellent capacity reservation under commercial mass loading(14.45 mg cm-2).Particularly,the cathodes can also operate stably in flexible or quasi-solid devices,indicating its application potential in flexible electronic products.This work established a universal method to solve the bottleneck problem of insufficient active adsorption sites of carbon-based ZIHCs.Imoproved should be changed into Improved. | Hongcheng He Jichun Lian Changmiao Chen Qiaotian Xiong Cheng Chao Li Ming Zhang | 2022 | Nano-Micro Letters2022,14,7: | 2 |
| 5 | The behavior of N, N - dipropyl dodecyl amine as a collector in the flotation of kaolinite and diaspore 显示文摘 | Changmiao Liu Yuehua Hu Ansheng Feng Zhenxu Guo Xuefeng Cao | 2011 | Minerals Engineer- ing2011,24,8: | 1 |
| 6 | Flotation of kaolinite with dodecyl tertiary amines 显示文摘 | Cao Xuefeng Liu Changmiao Hu Yuehua | 2009 | Journal of Central South University of Technology2009,16,: | 1 |
| 7 | Substituent effects in kaolinite flotation using dodecyl tertiary amines显示文摘 | Changmiao Liu Yuehua Hu Xuefeng Cao | 2009 | Minerals Engineering2009,,: | 1 |
| 8 | The behavior of N,N-dipropyl dodecyl amine as a collector in the flotation of kaolinite and diaspore显示文摘 | Liu Changmiao Hu Yuehua Feng Ansheng | | 0,,8: | 1 |
| 9 | Substituent effects in kaolinite flotation using dodecyl tertiary amines显示文摘 | Liu Changmiao Hu Yuehua Cao Xuefeng | | 0,,9: | 1 |
| 10 | 固体核磁共振高速魔角旋转条件下对称性脉冲零量子同核重耦技术显示文摘基于偶极耦合的同核相关固体核磁共振实验广泛应用于结构表征,RFDR是其中最广泛使用的零量子同核重耦序列之一。此前的研究中证明了RFDR的重耦效率非常依赖于魔角旋转转速、共振偏置、射频场不均匀性、化学位移各项异性及其它多种因素。本文基于对称性序列原理,在中等和高转速下考察了一系列RNN1(N≥4,N为偶数)对称性序列,并结合多种相位循环,以充分研究零量子重耦序列原理并实现均匀的宽带同核重耦。不同RN对称性序列的零量子偶极重耦效率进一步在13C、15N均匀标记的L-组氨酸以及微晶动力蛋白轻链(LC8)样品上得到检验。 | 纪毅 梁力鑫 Changmiao Guo 包信和 Tatyana Polenova 侯广进 | 2020 | 物理化学学报2020,36,4: | 1 |
| 11 | Building a PEG-C@MoSe_(2)@CNT heterostructure via in-situ selenidation as highly reversible anodes for Na+batteries显示文摘Herein,we describe a simple and efficient method to build C@MoSe_(2)@CNT composites that exhibit good electrochemical performance as anode materials for sodium-ion batteries.The protocol uses commercially available and cheap carbon nanotubes(CNT)as the conductive network.Molybdenum selenide(MoSe_(2)),in-situ-synthesized from Mo-ethylene glycol(poly(ethylene glycol)(PEG,M_(n)≈200))complexes,grows along the CNT with a discontinuous morphology,which creates multiple channels for the insertion of Na^(+).Meanwhile,PEG-C provides a thin carbon coating layer to increase stability.For PEG-200-2-C/MoSe_(2)/CNTat room temperature,the storage at 2 A g^(-1)is 426 m A h g^(-1)after 500 cycles and 212 m A h g^(-1)after 3,000 cycles.Compared with pure MoSe_(2),density functional theory calculations indicate that the Na^(+)diffusion barrier in the MoSe_(2)of C@MoSe_(2)@CNT effectively decreases from 0.91 to 0.72 e V,hence promoting the reversibility of the Na^(+)storage. | Yincai Yang Feng Wang Youwen Chen Changmiao Chen Shiguo Zhang Zhen-Qiang Yu Chak-Tong Au Shuang-Feng Yin Renhua Qiu | 2023 | Science China Chemistry2023,66,2: | 0 |
| 12 | A new technology for processing niobite ore found in Jiangxi province显示文摘A new process is proposed for refining niobite ore that is found in Jiangxi province of China.Niobite,also known as columbite or niobite-tantalite,is a mineral that contains tantalum and niobium.The separation process includes two-stage grinding,gravity concentration,magnetic separation,and flotation.The tantalum/niobium concentrate obtained had a grade of Ta2O5 18.28%,Nb2O5 41.62% at a recovery rate of Ta2O5 49.08%,Nb2O5 70.77%.Other minerals occurring along with the niobite,such as zinnwaldite,feldspar,and quartz,were also recovered to comprehensively utilize this ore. | Lv Zihu Wei Min Wu Dongyin Liu Changmiao Zhao Dengkui Feng Ansheng | 2012 | International Journal of Mining Science and Technology2012,22,4: | 0 |