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| 1 | Carbon confinement synthesis of interlayer-expanded and sulfur-enriched MoS2+x nanocoating on hollow carbon spheres for advanced Li-S batteries显示文摘High energy density and low-cost lithium-sulfur batteries have been considered as one of the most promising candidates for next-generation energy storage systems.However,the intrinsic problems of the sulfur cathode severely restrict their further practical application.Here,a unique double-shell architecture composed of hollow carbon spheres@interlayer-expanded and sulfur-enriched MoS2+x nanocoating composite has been developed as an efficient sulfur host.A uniform precursor coating derived from heteropolyanions-induced polymerization of pyrrole leads to space confinement effect during the in-situ sulfurization process,which generates the interlayer-expanded and sulfur-enriched MoS2+x nanosheets on amorphous carbon hollow spheres.This new sulfur host possesses multifarious merits including sufficient voids for loading sulfur active materials,high electronic conductivity,and fast lithium-ion diffusive pathways.In addition,additional active edge sites of MoS2+x accompanied by the nitrogen-doped carbon species endow the sulfur host with immobilizing and catalyzing effects on the soluble polysulfide species,dramatically accelerating their conversion kinetics and re-utilization.The detailed defect-induced interface catalytic reaction mechanism is firstly proposed.As expected,the delicately-designed sulfur host exhibits an outstanding initial discharge capacity of 1,249 mAh·g^−1 at 0.2 C and a desirable rate performance(593 mAh·g^−1 at 5.0 C),implying its great prospects in achieving superior electrochemical performances for advanced lithium sulfur batteries. | Wenda Li Dezhu Wang Zihao Song Zhijiang Gong Xiaosong Guo Jing Liu Zhonghua Zhang Guicun Li | 2019 | Nano Research2019，12，11： | 6 |
| 2 | Terminal sulfur atoms formation via defect engineering strategy to promote the conversion of lithium polysulfides显示文摘The defect engineering shows great potential in boosting the conversion of lithium polysulfides intermediates for high energy density lithium-sulfur batteries(LSBs),yet the catalytic mechanisms remain unclear.Herein,the oxygen-defective Li_(4)Ti_(5)O_(12)-xhollow microspheres uniformly encapsulated by N-doped carbon layer(OD-LTO@NC)is delicately designed as an intrinsically polar inorganic sulfur host for the research on the catalytic mechanism.Theoretical simulations have demonstrated that the existence of oxygen deficiencies enhances the adsorption capability of spinel Li_(4)Ti_(5)O_(12)towards soluble lithium polysulfides.Some-S-S-bonds of the Li2S6on the defective Li_(4)Ti_(5)O_(12)surface are fractured by the strong adsorption force,which allows the inert bridging sulfur atoms to be converted into the susceptible terminal sulfur atoms,and reduces the activation energy of the polysulfide conversion in some degree.In addition,with the N-doped carbon layer,secondary hollow microspheres architecture built with primary ultrathin nanosheets provide a large amount of void space and active sites for sulfur storage,adsorption and conversion.The as-designed sulfur host exhibits a remarkable rate capability of 547 m Ah g^(-1)at 4C(1 C=1675 m A g^(-1))and an outstanding long-term cyclability(519 m Ah g^(-1)after 1000 cycles at 3 C).Besides,a high specific capacity of 832 m Ah g^(-1)is delivered even after 100 cycles under a high sulfur mass loading of 3.2 mg cm^(-2),indicating its superior electrochemical performances.This work not only provides a strong proof for the application of oxygen defect in the adsorption and catalytic conversion of lithium polysulfides,but offers a promising avenue to achieve high performance LSBs with the material design concept of incorporating oxygen-deficient spinel structure with hierarchical hollow frameworks. | Yuanchang Li Wenda Li Xiujuan Yan Zhenfang Zhou Xiaosong Guo Jing Liu Changming Mao Zhonghua Zhang Guicun Li | 2022 | Journal of Materials Science & Technology2022，，8： | 2 |
| 3 | Constructing supramolecular nanostructure by hydrogen-bonding显示文摘The diquinoxalino (2.3-2′.3′-a.c) phenazine (DQP), containing 6 nitrogen atoms, was synthesized, and its adsorption and self-assembling behavior on highly oriented pyrolytic graphite (HOPG) was studied by scanning tunneling microscopy (STM) under ambient conditions. With 1,14-tetradecanedioic acid as a bridge, uniform two-dimensional arrays of 1,14-tetradecanedioic acid/DQP nanostructure were successfully fabricated. The result illustrates that it is possible to construct and control supramolecular nanostructure by intermolecular hydrogen-bonding. | LI YiBao ZENG QingDao WANG ZhiHui QI GuiCun GUAN Li FAN XiaoLin WANG Chen | 2008 | Chinese Science Bulletin2008，53，10： | 2 |
| 4 | The abnormal behavior of polymers glass transition temperature increase and its mechanism显示文摘In terms of the classical theory in textbooks, the two components with phase separation in a binary polymer blend will, depending on their compatibility, have their respective Tg get closer or remain in their original values. According to the classical theory, the Tg of plastic component shall remain unchanged or move toward the lower Tg of rubber component in a rubber/plastic blend. However, ultra-fine full-vulcanized powdered rubber (UFPR) with a diameter of ca. 100 nm can simultaneously increase the toughness and the Tg of plastics, which is abnormal and is difficult to explain by classical theory. In this feature article, the abnormal behavior and its mechanism are discussed in detail. | WANG Xiang QI GuiCun ZHANG XiaoHong GAO JianMing LI BingHai SONG ZhiHai QIAO JinLiang | 2012 | Science China Chemistry2012，55，5： | 2 |
| 5 | Morphological control of flower-like ZnO nanostructures显示文摘 | JIANG Li LI Guicun JI Qianmao | 2007 | Materials Letters2007，61，10： | 1 |
| 6 | 显示文摘 | Guicun Li and Zhikun Zhang | 2004 | Macromolecules2004，37，： | 1 |
| 7 | Synthesis and characterization of single-crystal Ce (OH)CO3 and CeO2 triangular microplates显示文摘 | Zhiyan Guo Fanglin Du Guicun Li Zuolin Cui | 2006 | Inorganic Chemistry2006，45，1： | 1 |
| 8 | Rapid polymerization initiated by redox initiator for the synthesis of polyaniline nanofibers显示文摘 | Guicun Li Chuanqin Zhang Yingmei Li Hongrui Peng Kezheng Chen | 2010 | Polymer2010，，9： | 1 |
| 9 | 显示文摘 | Wang Li Li Guicun Zhang Zhikun | 2006 | Materials Research Bulletin2006，41，： | 1 |
| 10 | Synthesis and electrochemical performance of phosphate-coated porous LiNi1/3Co1/3Mn1/3O2 cathode material for lithium ion batteries显示文摘 | Yao Yuanlu Liu Huaicheng Li Guicun | 2013 | Electrochimica Acta2013，113，： | 1 |
| 11 | 显示文摘 | Pang Shuping Li Guicun Zhang Zhikun | 2005 | Macromol Rapid Commun2005，26，： | 1 |
| 12 | Synthesis of submicrometer-sized hollow titania spheres with controllable shells显示文摘 | Li Guicun Zhang Zhikun | 2004 | Materials Letters2004，58，2223： | 1 |
| 13 | Hydrothermal Synthesis and Characterization of YVO4 andYVO4 : Eu3+ Nanobelts and Polyhedral Micron Crystals 显示文摘 | LI Guicun CHAO Kun PENG Hongrui | 2008 | The Journal of Physical Chemistry C2008，112，： | 1 |
| 14 | HoLlow self-doped polyaniline micro/nanostructures: microspheres, aligned pearls, and nanotubes显示文摘 | Li Guicun Zhang Chuanqin Peng Hongrui Chen Kezheng Zhang Zhikun | 2008 | Macromol Rapid Commun2008，29，： | 1 |
| 15 | Synthesis and characterization of bifunctional magnetic-optical FeaO4 @ SiO2 @ Y2 O3: Yb3+ , Era+ nea>infrared-to-visible up-con- version nanoparticles 显示文摘 | Yu Xuegang Shan Yan Li Guicun | 2011 | J Mater Chem2011，21，： | 1 |
| 16 | Study on novel antibacterial high-impact polystyrene/TiO2 nanocomposites显示文摘 | Wang Zhaobo Li Guicun Peng Hongrui | 2005 | Journal of Materials Science2005，40，2： | 1 |
| 17 | Enhanced Exfoliation of Montmorillonite Prepared by Hydrothermal Method显示文摘 | Wang Zhaobo Wang Xin Li Guicun | 2008 | Applied Clay Science2008，42，： | 1 |
| 18 | Synthesis and electrochemical performance of phosphate-coated porous LiNi1/3Mn1/3Co1/3O2 cathode material for lithium ion batteries 显示文摘 | Yao Yuanlu Liu Huaicheng Li Guicun | 2013 | Electrochimica Acta2013，，113： | 1 |
| 19 | Environmentally friendly chemical route to vanadium oxide single-crystalline nanobe- Its 显示文摘 | Li Guicun Pang Shuping Guo Zhiyan | 2006 | J Phys Chem B2006，110，： | 1 |
| 20 | Low?valent vanadium oxide nanostructures with controlled crystal structures andmorphologies显示文摘 | Li Guicun Chao Kun Peng Hongrui | 2007 | Inorganic Chemistry2007，46，14： | 1 |
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