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High-performance Si-Containing anode materials in lithium-ion batteries: A superstructure of Si@Co-NC composite works effectively

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Green Energy & Environment 2022年第1期7卷 116-129页

作者： Qiongguang Li Yanhong Wang Jing Yu menglei yuan Qiangqiang Tan Ziyi Zhong Fabing Su School of Chemical Engineering University of Chinese Academy of Sciences100049BeijingChina State Key Laboratory of Multiphase Complex Systems CAS Key Laboratory of Green Process EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China Zhongke Langfang Institute of Process Engineering Fenghua Road No 1Langfang Economic&Technical Development ZoneHebei Province065001China College of Engineering Guangdong Technion Israel Institute of Technology(GTIIT)241 Daxue RoadJinping DistrictShantou515063China Technion Israel Institute of Technology(IIT) Haifa32000Israel Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical TechnologyShenyang110142China

To mitigate the massive volume expansion of Si-based anode during the charge/discharge cycles,we synthesized a superstructure of Si@Co±NC composite via the carbonization of zeolite imidazolate frameworks incorporated with Si *** Si@Co±NC is comprised of Sinanoparticle core and N-doped/Co-incorporated carbon shell,and there is void space between the core and the *** using as anode material for LIBs,Si@Co±NC displayed a super performance with a charge/discharge capacity of 191.6/191.4 mA h g^(-1)and a coulombic efficiency of 100.1%at 1000 mA g^(-1)after 3000 cycles,and the capacity loss rate is 0.022%per cycle *** excellent electrochemical property of Si@Co±NC is because its electronic conductivity is enhanced by doping the carbon shell with N atoms and by incorporating with Co particles,and the pathway of lithium ions transmission is shortened by the hollow structure and abundant mesopores in the carbon ***,the volume expansion of Si nanoparticles is well accommodated in the void space and suppressed by the carbon host *** work shows that,through designing a superstructure for the anode materials,we can synergistically reduce the work function and introduce the confinement effect,thus significantly enhancing the anode materials’electrochemical performance in LIBs.

关键词： Confinement effect Work function regulation Doping Hollow core-shell structure Si anode

Novel magnetic carbon supported molybdenum disulfide catalyst and its application in residue upgrading

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Green Energy & Environment 2021年第6期6卷 952-960页

作者： Xiangyang Zhu Dong Qiao Liangrong Yang Qinling Bi Huifang Xing Shan Ni menglei yuan Huizhou Liu Luhai Wang An Ma CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China c China University of Petroleum Beijing102249China Petrochemical Research Institute PetrochinaBeijing102206China

A novel hybrid material consisted of carbon covered Fe_(3)O_(4)nanoparticles and MoS_(2)nanoflower(FCM)was designed and prepared by micelle-assisted hydrothermal *** techniques,including X-Ray diffraction(XRD),high-resolution transmission electron microscopy(HRTEM)and X-ray photoelectron spectroscopy(XPS)were employed to characterize *** results show that FCM has a flower-like morphology with a 330 nm Fe_(3)O_(4)core as well as 70 nm highly crystalline MoS_(2)*** is superparamagnetic with a saturation magnetization of 35 emu *** hydrocracking of Canadian bitumen residue(CBR)was applied to estimate its catalytic *** results show that FCM exhibits superior catalytic hydrocracking activity compared to bulk MoS_(2)and commercial oil-dispersed Mo(CO)6 by the same Mo *** measurement by elemental analysis,XPS and XRD reveals that the MoS_(2)nanoflower with abundant catalytic active sites and covered carbon layer with anti-coke ability donate to the superior upgrading ***,the catalysts can be easily recovered by the external magnetic *** work provides a novel kind magnetic nanocatalyst which is potential for slurry-phase hydrocracking applications.■2020,Institute of Process Engineering,Chinese Academy of *** services by Elsevier *** behalf of KeAi Communications Co.,*** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Magnetic Carbon MoS_(2) Catalyst Heavy oil

Boosting oxygen evolution reactivity by modulating electronic structure and honeycomb-like architecture in Ni_(2)P/N,P-codoped carbon hybrids

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Green Energy & Environment 2021年第6期6卷 866-874页

作者： menglei yuan Yu Sun Yong Yang Jingxian Zhang Sobia Dipazir Tongkun Zhao Shuwei Li Yongbing Xie He Zhao Zhanjun Liu Guangjin Zhang CAS Key Laboratory of Green Process Engineering Institute of Process EngineeringChinese Academy of Sciences100190BeijingChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences100049BeijingChina School of Science North University of China030051TaiyuanChina Institute of Environmental Reference Materials of Ministry of Ecology and Environment 100029BeijingChina CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChineseAcademy of Sciences030001TaiyuanChina

Oxygen evolution reaction(OER)as the foremost stumbling block to generate cost-effective clean fuels has received extensive attention in recent ***,it still maintains the challenge to manipulate the geometric and electronic structure during single reaction process under the same ***,we report a simple self-template strategy to generate honeycomb-like Ni_(2)P/N,P-C hybrids with preferred electronic *** coupled with theoretical results revealed that the synthesized catalyst has two characteristics:firstly,the unique honeycomb-like morphology not only enables the fully utilization of catalytic active sites but also optimizes the mass/electron transportation pathway,which favor the diffusion of electrolyte to accessible active ***,N,P-C substrate,on the one hand,largely contributes the electronic distribution near Fermi level(E_(F))thus boosting its electrical *** the other hand,the support effect result in the upshift of d-band center and electropositivity of Ni sites,which attenuates the energy barrier for the adsorption of OH~àand the formation of**** consequence,the optimized Ni_(2)P/N,P-C catalysts feature high electrocatalytic activity towards OER(a low overpotential of 252 m V to achieve10 m A cm^(-2))and 10 h long-term stability,the outstanding performance is comparable to most of transition metal *** work gives a innovative tactics for contriving original OER electrocatalysts,inspirng deeper understanding of fabricating catalysts by combining theoretical simulation and experiment design.

关键词： Oxygen evolution reaction Ni2P Modulating electronic structure Honeycomb-like architecture

Interfacial engineering of transition-metal sulfides heterostructures with built-in electric-field effects for enhanced oxygen evolution reaction

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Chinese Journal of Chemical Engineering 2022年第1期35卷 320-328页

作者： Shan Ni Hongnan Qu Huifang Xing Zihao Xu Xiangyang Zhu menglei yuan Meng Rong Li Wang Jiemiao Yu Yanqing Li Liangrong Yang Huizhou Liu CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of SciencesQingdao 266061China

Developing highly efficient,durable,and non-noble electrocatalysts for the sluggish anodic oxygen evolution reaction(OER)is the pivotal for meeting the practical demand in water ***,the current transition-metal electrocatalysts still suffer from low activity and durability on account of poor interfacial reaction *** this work,a facile solid-state synthesis strategy is developed to construct transition-metal sulfides heterostructures(denoted as MS_(2)/NiS_(2),M=Mo or W)for boosting OER *** a result,MoS2/NiS2 and WS2/NiS2 show lower overpotentials of 300 mV and 320 mV to achieve the current density of 10 mA·cm^(-2),and smaller Tafel slopes of 60 ***^(-1) and 83 ***^(-1)in 1 mol·L^(-1) KOH,respectively,in comparison with the single MoS2,WS2,NiS2,as well as even the benchmark *** experiments reveal that the designed heterostructures have strong electronic interactions and spontaneously develop a built-in electric field at the heterointerface with uneven charge distribution based on the difference of band structures,which promote interfacial charge transfer,improve absorptivity of OH-,and modulate the energy level more comparable to the ***,the designed transition-metal sulfides heterostructures exhibit a remarkably high electrocatalytic activity for *** study provides a simple strategy to manipulate the heterostructure interface via an energy level engineering method for OER and can be extended to fabricate other heterostructures for various energy-related applications.

关键词： Oxygen evolution reaction Transition-metal sulfides heterostructures Heterointerface Built-in electric field

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中国煤层气钻井技术现状及发展趋势

天然气工业 2014年第8期34卷 87-91页

作者：王益山王合林刘大伟袁孟雷蒋海涛中国石油渤海钻探工程有限公司工程技术研究院中国石油渤海钻探工程有限公司广东石油化工学院石油工程学院中国石油渤海钻探工程有限公司定向井技术服务公司

对我国煤层气钻井完井技术现状进行了归纳和总结,结果认为:煤储层地质基础薄弱、井壁易失稳、煤层损害严重以及完井效果差等难题严重制约了我国煤层气高效勘探开发;已开展的多分支水平井技术、U型井技术及其配套的连通和裸眼造洞穴等技... 详细信息

对我国煤层气钻井完井技术现状进行了归纳和总结,结果认为:煤储层地质基础薄弱、井壁易失稳、煤层损害严重以及完井效果差等难题严重制约了我国煤层气高效勘探开发;已开展的多分支水平井技术、U型井技术及其配套的连通和裸眼造洞穴等技术取得了长足进展,一定程度上缓解了以上技术难题的制约。生产实践表明,由清水钻井引起的钻井安全与煤层保护的矛盾仍然突出,国内煤层气产量依然偏低。进而建议,加强对煤层专用钻井液、煤层损害解除方法的研究,尽快制定煤层气钻井相关室内实验评价方法和矿场评价方法的行业及国家标准,探索矿权制度改革,开展煤层气与常规气、致密气合采关键技术研究,积极开展煤层气多层钻完井、复杂结构井增产措施配套技术研究。

关键词：中国煤层气钻井多分支水平井 U型井井壁稳定煤层保护研究方向

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钻井液损害煤层评价方法探讨

天然气工业 2015年第6期35卷 70-75页

作者：刘大伟王绮虞海法刘全稳袁孟雷贾东民广东石油化工学院石油工程学院中国石油渤海钻探工程公司工程技术研究院中国石油华北油田公司采油工程研究院中国石油渤海钻探工程公司定向井技术服务公司

针对国内尚缺少统一有效的钻井液损害煤层评价方法的现状,基于煤层气产出及损害机理,提出了解吸量比值法和渗透率恢复率法联合评价钻井液对煤层损害效果的评价方法和指标,并对煤样解吸量比和渗透率恢复率的概念进行了定义。在此基础上,... 详细信息

针对国内尚缺少统一有效的钻井液损害煤层评价方法的现状,基于煤层气产出及损害机理,提出了解吸量比值法和渗透率恢复率法联合评价钻井液对煤层损害效果的评价方法和指标,并对煤样解吸量比和渗透率恢复率的概念进行了定义。在此基础上,重点阐述实验评价方法以及煤层气自降解钻井液((BMD)和常规无固相聚合物钻井液(WGJH)对煤层的保护和损害能力。实验结果表明:①CBMD降解后,渗透率恢复率较高,可达100%,对煤储层基本不伤害,而WGJH钻井液渗透率恢复率最高不超过30%;②CBMD污染过的煤样解吸量比达95.89%与清水接近,WGJH钻井液污染过的煤样解吸量比为20.11%。实验结果同时也解释了现场应用WGJH后煤层产气量低甚至不产气的原因,即煤层渗流通道恢复能力变差、煤层气解吸能力降低。结论认为,该方法实用、有效,可作为钻井液损害及保护煤层效果的评价方法。

关键词：煤层气钻井完井液煤层损害评价方法解吸量解吸量比值渗透率恢复率

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粉红螺旋聚孢霉高效生防菌株的筛选与评价

植物保护 2021年第3期47卷 54-60,95页

作者：吴海霞袁梦蕾江娜马桂珍孙漫红李世东江苏海洋大学海洋学院连云港222005 中国农业科学院植物保护研究所北京100193

粉红螺旋聚孢霉Clonostachys rosea是一种重要的植物病原生防真菌。本研究测定了不同地理来源的42株粉红螺旋聚孢霉菌株对核盘菌Sclerotinia sclerotiorum菌核的寄生能力,以及菌株几丁质酶和β-1,3-葡聚糖酶的活性,同时测定了不同菌株... 详细信息

粉红螺旋聚孢霉Clonostachys rosea是一种重要的植物病原生防真菌。本研究测定了不同地理来源的42株粉红螺旋聚孢霉菌株对核盘菌Sclerotinia sclerotiorum菌核的寄生能力,以及菌株几丁质酶和β-1,3-葡聚糖酶的活性,同时测定了不同菌株对番茄灰霉病菌Botrytis cinerea的拮抗作用以及对番茄果实灰霉病的防治效果。结果表明,不同来源的粉红螺旋聚孢霉菌株对核盘菌菌核均有一定的寄生能力,45.2%的菌株寄生能力达到4级,β-1,3-葡聚糖酶和几丁质酶活性与其寄生能力呈极显著正相关。研究发现,粉红螺旋聚孢霉菌株对番茄灰霉病菌有一定的拮抗作用,抑制率最高可达78.4%;HN-56、STG-21-1、GS6-1等菌株对离体番茄果实灰霉病的防效达到75%以上,显示出良好的生防潜力。本研究为丰富植物真菌病害生防资源和高效粉红螺旋聚孢霉生防制剂的研发奠定了基础。

关键词：粉红螺旋聚孢霉菌寄生细胞壁降解酶核盘菌番茄灰霉病

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基于Magnus效应风力机叶片的数值模拟

能源与节能 2016年第6期 77-79页

作者：袁孟蕾李仁府王亮华中科技大学中欧清洁与可再生能源学院湖北武汉430074 华中科技大学航空航天研究中心湖北武汉430074

探索Magnus效应风力机的气动性能,从二维翼型-旋转圆柱绕流到建立三维叶轮模型,通过数值模拟方法来进一步了解其气动性能,为之后Magnus效应风力机设计提供参考。

关键词： Magnus效应旋转圆柱绕流风力机数值模拟

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从铝电解质中回收锂资源的工艺研究进展

河南化工 2024年第7期41卷 39-43页

作者：原泽薛峰峰张梦蕾河南省氟基新材料科技有限公司河南焦作454000 多氟多新材料股份有限公司河南焦作454000

高效回收并循环利用废弃铝电解质中的锂和铝资源是目前涉锂行业以及铝工业中的重要课题。根据目前实际应用情况,铝电解质提锂工艺可以分为三个阶段,分别是预处理阶段、浸取阶段和沉锂阶段,各个阶段中都有不同的工艺方法,尤其是预处理阶... 详细信息

高效回收并循环利用废弃铝电解质中的锂和铝资源是目前涉锂行业以及铝工业中的重要课题。根据目前实际应用情况,铝电解质提锂工艺可以分为三个阶段,分别是预处理阶段、浸取阶段和沉锂阶段,各个阶段中都有不同的工艺方法,尤其是预处理阶段和浸取阶段。从现有的铝电解质提锂工艺进行介绍,综述了不同方案的工艺流程、工艺原理以及优缺点,为锂资源回收行业和铝资源综合利用行业提供参考。

关键词：铝电解质锂资源回收酸性浸取碱性浸取