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Chalcogenides metal-based heterostructure anode materials toward Na^(+)-storage application

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Nano Research 2023年第2期16卷 2347-2365页

作者： Yue Miao Ying Xiao Shilin Hu shimou chen Beijing Key Laboratory of Electrochemical Process and Technology for Materials College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Sodium-ion batteries(SIBs)are promising candidates for future large-scale energy storage systems due to their low cost and high ***,the sluggish kinetics caused by the large radius of Na+impedes the practical application of *** engineering has emerged as an attractive strategy to alleviate this critical issue due to its intriguing contributions to accelerating electrons/ions transfer kinetics,improving structural stability,and enhancing Na^(+)adsorption *** this perspective,in this review,we introduce the vital role of heterostructure on the performance of SIBs *** commonly used approaches for synthesizing chalcogenides metal-based heterostructure anodes are then ***,we discuss the recent progress of various chalcogenides metal-based anodes in ***,we provide a concluding discussion on the current challenges and perspectives of future development of the heterostructure anode materials for high-performance SIBs.

关键词： heterostructure energy storage anode materials sodium-ion batteries

Defects in Graphene:Generation,Healing,and Their Effects on the Properties of Graphene:A Review

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Journal of Materials Science & Technology 2015年第6期31卷 599-606页

作者： Lili Liu Miaoqing Qing Yibo Wang shimou chen Department of Chemistry School of ScienceBeijing Technology and Business University Key Laboratory of Green Process and Engineering Institute of Process Engineering(IPE)Chinese Academy of Sciences(CAS)

Graphene has attracted immense investigation since its *** imperfections are introduced into graphene unavoidably during graphene growth or *** structural defects are known to significantly affect electronic and chemical properties of graphene.A comprehensive understanding of graphene defect is thus of critical *** we review the major progresses made in defectrelated engineering of ***,we give a brief introduction on the types of defects in ***,the generation and healing of the graphene defects are ***,the effects of defects on the chemical,electronic,magnetic,and mechanical properties of graphene are ***,we address the associated challenges and prospects on the future study of defects in graphene and other nanocarbon materials.

关键词： Graphene Vacancy Defect healing Band gap modulatio

Recent advances in two-dimensional nanomaterials-based electrochemical sensors for environmental analysis

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Green Energy & Environment 2018年第2期3卷 97-106页

作者： Shao Su shimou chen Chunhai Fan Division of Physical Biology Shanghai Institute of Applied PhysicsChinese Academy of Sciences Key Laboratory for Organic Electronics & Information Displays (KLOEID) Institute of Advanced Materials (IAM)Jiangsu National Syngerstic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts & Telecommunications Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and EngineeringInstitute of Process Engineering (IPE)Chinese Academy of Sciences (CAS)

With the rapidly increased concerns in environmental pollution, there have been urgent needs to develop fast, sensitive, low-cost and multiplexed sensing devices for the detection of environmental pollutants. Two-dimensional(2D) nanomaterials hold great promise due to their unique chemical and physical properties, which have been extensively employed to monitor the environmental pollutants combined with different detection techniques. In this review, we summarize recent advances in 2D nanomaterials-based electrochemical sensors for detecting heavy metal ions, organic compounds, pesticides, antibiotics and bacteria. We also discuss perspectives and challenges of 2D nanomaterials in environmental monitoring.

关键词： Two dimensional Nanomaterials Electrochemical sensor Environmental monitoring

Novel ionic liquid based electrolyte for double layer capacitors with enhanced high potential stability

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Science China Chemistry 2016年第5期59卷 547-550页

作者： Lan Zhang Kun Dong shimou chen Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Chemical Process State Key Laboratory of Multiphase Complex SystemsInstitute of Process and EngineeringChinese Academy of SciencesBeijing 100190China

Developing electrolyte with high electrochemical stability is the most effective way to improve the energy density of double layer capacitors(DLCs), and ionic liquid is a promising choice. Herein, a novel ionic liquid based high potential electrolyte with a stabilizer, succinonitrile, was proposed to improve the high potential stability of the DLC. The electrolyte with 7.5 wt% succinonitrile added has a high ionic conductivity of 41.1 m S cm^(-1) under ambient temperature, and the DLC adopting this electrolyte could be charged to 3.0 V with stable cycle ability even under a discharge current density of 6 A g^(-1). Moreover, the energy density could be increased by 23.4% when the DLC was charged to 3.0 V compared to that charged to 2.7 V.

关键词： double layer capacitor ionic liquid electrolyte high potential succinonitrile

Three new bifunctional additive for safer nickel-cobalt-aluminum based lithium ion batteries

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Chinese Chemical Letters 2018年第12期29卷 1781-1784页

作者： Lili Liu Changjiang Du Shili Wang shimou chen School of Sciences/Key Laboratory of Cosmetic China National Light Industry Beijing Technology and Business University Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringInstitute of Process Engineering Chinese Academy Sciences

Three different types of new electrolyte additives were adopted as flame retardant to improve the safety of nickel-cobalt-aluminum(LiNi_(0.8)Co_(0.15)Al_(0.05)O_2, abbreviation NCA) based lithium batteries. By adding 5 wt% of the additives, an obvious flame retardant effect can be observed for the electrolyte. Furthermore,it was found that the additives can help for forming a stable cathode electrolyte interface(CEI) film on the NCA cathode, which are important for enhancing the thermal stability of the electrolyte and make the electrolyte obviously reduce the flammability, as well as good effect on the cycling cycle performance of the battery. These results indicate that our flame retardant are favorable additives in conventional liquid electrolytes for rechargeable lithium-ion batteries with good safety and high performances.

关键词： Lithium ion batteries Electrolyte Flame retardant additives Film-forming additives NCA

Ternary nanoarray electrode with corn-inspired hierarchical design for synergistic lithium storage

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Nano Research 2017年第1期10卷 172-186页

作者： Jia Yu Xi Wang shimou chen Xiaoyu Liu Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China School of Sciences Beijing Jiaotong University Beijing 100044 China

Single-component anode materials can barely satisfy the growing demand for next-generation Li-ion batteries with higher capacity and cyclability. Thus developing multi-component synergistic electrodes has become a critical issue. Herein, inspired by natural corn, a ternary hierarchical self-supported array design is proposed. Based on a sequential transformation route, Si/C-modified C0304 nanowire arrays are constructed on 3D Ni foams to form a binder-free integrated electrode. Specifically, an ionic liquid-assisted electrodeposition strategy is employed to prepare discrete ultrafine Si nanoparticles on nanoscale array substrates, which follow the Volmer-Weber island growth mode. In this corn-mimetic system, kernel-like Si nanoparticles and a husk-like carbon coating layer function as enhancing and protecting units, respectively, to improve the capacity and stability of the cobalt oxide basic unit. Taking advantage of a synergistic effect, the ternary nanoarray anode achieves a significant performance enhancement compared to pristine Co304, showing a special capacity as high as -1,000 mAh·g^-1 at 100 mA·g^-1. By extending this corn-mimetic hierarchical array design to other basic, enhancing, and protecting units, new ideas for constructing synergistic nano-architectures for energy conversion and storage field are developed.

关键词： nanowire arraY cobalt oxide Si ionic liquid biomimetic material Li-ion battery

In-situ synthesis of interconnected SWCNT/OMC framework on silicon nanoparticles for high performance lithium-ion batteries

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Green Energy & Environment 2016年第1期1卷 91-99页

作者： Weiwei Li shimou chen Jia Yu Daliang Fang Baozeng Ren Suojiang Zhang School of Chemical Engineering and Energy Zhengzhou University Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences

In spite of silicon has a superior theoretical capacity, the large volume expansion of Si anodes during Li^+ insertion/extraction is the bottle neck that results in fast capacity fading and poor cycling performance. In this paper, we report a silicon, single-walled carbon nanotube, and ordered mesoporous carbon nanocomposite synthesized by an evaporation-induced self-assembly process, in which silicon nanoparticles and single-walled carbon nanotubes were added into the phenolic resol with F-127 for co-condensation. The ordered mesoporous carbon matrix and single-walled carbon nanotubes network could effectively accommodate the volume change of silicon nanoparticles, and the ordered mesoporous structure could also provide efficient channels for the fast transport of Li-ions. As a consequence, this hybrid material exhibits a reversible capacity of 861 mAh g^(-1) after 150 cycles at a current density of 400 mAg^(-1). It achieves significant improvement in the electrochemical performance when compared with the raw materials and Si nanoparticle anodes.

关键词： Silicon Single-walled carbon nanotube Ordered mesoporous carbon Lithium ion battery

Influence of FeCl_3 on radiation stability of ionic liquid BmimCl

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Chinese Science Bulletin 2013年第10期58卷 1150-1155页

作者： HUANG Lei HUANG Wei FU HaiYing WU GuoZhong GUO ZhiJun WU WangSuo chen shimou Shanghai Institute of Applied Physics Chinese Academy of Sciences Radiochemistry Labaratory School of Nuclear Science and TechnologyLanzhou University Institute of Process Engineering Chinese Academy of Sciences

This study investigates the effect FeCl3 on the radiation stability of the ionic liquid,1-butyl-3-methylimidazolium chloride(BmimCl) over a wide dose range of 0 to 1000 kGy under γ-ray *** ionic liquid species,BmimFeCl4,was formed by adding FeCl3 into *** results showed that the presence of FeCl4-significantly improved the radiation resistance of BmimCl,wherein the effect was more pronounced at higher ***,under irradiation,Fe(II) was generated from Fe(III),which was reduced by solvated *** addition,the concentration of Fe(II) increased with low level of absorbed dose,but leveled off at higher ***,the radiation yield of the solvated electrons of BmimCl was further estimated at approximately 0.358±0.01 μmol/J in BmimCl-7 mol% FeCl3 system.

关键词：辐射稳定性三氯化铁离子液体甲基咪唑射线辐射耐辐射性浓度增加溶剂化

Size effect of Si particles on the electrochemical performances of Si/C composite anodes

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Chinese Physics B 2018年第8期27卷 598-604页

作者： Bonan Liu Hao Lu Geng Chu Fei Luo Jieyun Zheng shimou chen Hong Li Beijing National Laboratory for Condensed Matter Physics Institute ol PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Green Process Engineering State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 00190China Tianmu Energy Anode MateriM Ltd.Co. Changzhou 213300China

A series of Si/C composites were fabricated based on pitch and Si powders with particle sizes of 30, 100, 500, and 3000 nm. The size effects of the Si particles in the Si/C composites were investigated for lithium-ion battery anodes. The nanoscale Si and Si/C composites exhibited good capacity retentions. Scanning electron microscopy showed that exterior and interior cracks emerging owing to volume expansion as well as parasitic reactions with the electrolyte could well explain the performance failure.

关键词： silicon-carbon composite solid-electrolyte interphase size effect, anode, volume expansion