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Double-layered skeleton of Li alloy anchored on 3D metal foam enabling ultralong lifespan of Li anode under high rate

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Chinese Chemical Letters 2024年第3期35卷 479-485页

作者： chaohui wei Zeyu Yao Jin Ruan Zhicui Song Aijun Zhou Yingze Song Donghuang Wang Jicheng Jiang Xin Wang Jingze Li Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313000China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory of Environmental-Friendly Energy Materials Tianfu Institute of Research and InnovationSchool of Materials and ChemistrySouthwest University of Science and TechnologyMianyang 621010China

The high specific capacity and low negative electrochemical potential of lithium metal anodes(LMAs),may allow the energy density threshold of Li metal batteries(LMBs)to be pushed ***,the existing detrimental issues,such as dendritic growth and volume expansion,have hindered the practical implementation of *** three-dimensional frameworks(e.g.,copper and nickel foam),have been regarded as one of the fundamental strategies to reduce the local current density,aiming to extend the Sand'***,the local environment far from the skeleton is almost the same as the typical plane Li,due to macroporous space of metal ***,we built a double-layered 3D current collector of Li alloy anchored on the metal foam,with micropores interconnected macropores,via a viable thermal infiltration and cooling *** to the excellent electronic and ionic conductivity coupled with favorable lithiophilicity,the Li alloy can effectively reduce the nucleation barrier and enhance the Li^(+)transportation rate,while the metal foam can role as the primary promotor to enlarge the surface area and buffer the dimensional ***,the Li composite anode with hierarchical structure of primary and secondary scaffolds realized the even deposition behavior and minimum volume expansion,outputting preeminent prolonged cycling performances under high rate.

关键词： Double-layered skeleton Li alloy 3D Metal foam Ultralong lifespan Lithium metal batteries High rate

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Single-atom electrocatalysts for lithium-sulfur chemistry:Design principle,mechanism,and outlook

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Carbon Energy 2023年第4期5卷 13-41页

作者： Yingze Song Luwei Zou chaohui wei Yu Zhou Yue Hu State Key Laboratory of Environment‐Friendly Energy Materials Tianfu Institute of Research and InnovationSchool of Materials and ChemistrySouthwest University of Science and TechnologyMianyangSichuanPeople's Republic of China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhouPeople's Republic of China State Key Laboratory of Powder Metallurgy Hunan Key Laboratory of Nanophotonics and DevicesSchool of Physics and Electronicspowder Metallurgy Research InstituteCentral South UniversityChangshaPeople's Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouPeople's Republic of China

Lithium-sulfur batteries(LSBs)have been regarded as one of the promising candidates for the next-generation“lithium-ion battery beyond”owing to their high energy density and due to the low cost of ***,the main obstacles encountered in the commercial implementation of LSBs are the notorious shuttle effect,retarded sulfur redox kinetics,and uncontrolled dendrite ***,single-atom catalysts(SACs),which have ultrahigh catalytic efficiency,tunable coordination configuration,and light weight,have shown huge potential in the field of LSBs to *** review summarizes the recent research progress of SACs applied as multifunctional components in *** design principles and typical synthetic strategies of SACs toward effective Li–S chemistry as well as the working mechanism promoting sulfur conversion reactions,inhibiting the lithium polysulfide shuttle effect,and regulating Li+nucleation are comprehensively *** future directions in terms of research on SACs for the realization of commercially viable LSBs are also outlined.

关键词： design principle lithium-sulfur chemistry mechanism single-atom electrocatalyst

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Charge Storage Properties of Aqueous Halide Supercapatteries with Activated Carbon and Graphene Nanoplatelets as Active Electrode Materials

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Energy & Environmental Materials 2021年第3期4卷 481-491页

作者： Bamidele Akinwolemiwa chaohui wei Qinghua Yang George Z.Chen International Doctoral Innovation Centre Faculty of Science and EngineeringThe University of Nottingham Ningbo ChinaNingbo 315100China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringThe University of Nottingham Ningbo ChinaNingbo 315100China Department of Chemical and Environmental Engineering and Advanced Materials Research GroupFaculty of EngineeringThe University of NottinghamNottingham NG72RDUK

Device level performance of aqueous halide supercapatteries fabricated with equal electrode mass of activated carbon or graphene nanoplatelets has been *** was revealed that the surface oxygen groups in the graphitic structures of the nanoplatelets contributed toward a more enhanced charge storage capacity in bromide containing redox ***,the rate performance of the devices could be linked to the effect of the pore size of the carbons on the dynamics of the inactive alkali metal counterion of the redox halide ***,the charge storage performance of aqueous halide supercapatteries with graphene nanoplatelets as the electrode material may be attributed to the combined effect of the porous structure on the dynamics of the non-active cations and a possible interaction of the Br^(-)/(Br_(2)+Br^(-)_(3))redox triple with the surface oxygen groups within the graphitic layer of the ***,it has been shown that the surface groups and microstructure of electrode materials must be critically correlated with the redox electrolytes in the ongoing efforts to commercialize these devices.

关键词： carbon materials device engineering energy efficiency redox electrolyte supercapattery

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国内有关植物纤维/聚乳酸复合材料在3D打印领域应用的研究

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化工设计通讯 2024年第8期50卷 123-125页

作者：李美慧韦朝会雷文南京林业大学理学院江苏南京210037

聚乳酸(PLA)是一种新型绿色友好材料,是熔融沉积(FDM)3D打印成型技术中使用最多的原材料之一,但价格较高、耐热性差、韧性差等缺陷在一定程度上制约了它在3D打印领域的应用与发展。为克服此不足,国内学者开展了大量的植物纤维与PLA复合... 详细信息

聚乳酸(PLA)是一种新型绿色友好材料,是熔融沉积(FDM)3D打印成型技术中使用最多的原材料之一,但价格较高、耐热性差、韧性差等缺陷在一定程度上制约了它在3D打印领域的应用与发展。为克服此不足,国内学者开展了大量的植物纤维与PLA复合并将其应用于FDM 3D打印领域的研究。对此方面的研究进展进行综述,并对植物纤维/PLA复合材料在3D打印领域的未来进行了展望。

关键词：聚乳酸植物纤维复合材料熔融沉积3D打印

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3D Printing of NiCoP/Ti3C2 MXene Architectures for Energy Storage Devices with High Areal and Volumetric Energy Density

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Nano-Micro Letters 2020年第10期12卷 300-312页

作者： Lianghao Yu weiping Li chaohui wei Qifeng Yang Yuanlong Shao Jingyu Sun College of Energy Soochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow University215006 SuzhouJiangsuPeople’s Republic of China

Designing high-performance electrodes via 3D printing for advanced energy storage is appealing but remains *** normal cases,light-weight carbonaceous materials harnessing excellent electrical conductivity have served as electrode ***,they struggle with undermined areal and volumetric energy density of supercapacitor devices,thereby greatly impeding the practical ***,we demonstrate the in situ coupling of NiCoP bimetallic phosphide and Ti3C2 MXene to build up heavy NCPM electrodes affording tunable mass loading throughout 3D printing *** resolution of prints reaches 50μm and the thickness of device electrodes is ca.4 ***-printed electrode possessing robust open framework synergizes favorable capacitance of NiCoP and excellent conductivity of MXene,readily achieving a high areal and volumetric capacitance of 20 F cm^-2 and 137 F cm^-3 even at a high mass loading of^46.3 mg cm^-***,an asymmetric supercapacitor full cell assembled with 3D-printed NCPM as a positive electrode and 3D-printed activated carbon as a negative electrode harvests remarkable areal and volumetric energy density of 0.89 mWh cm^-2 and 2.2 mWh cm^-3,outperforming the most of state-of-the-art carbon-based *** present work is anticipated to offer a viable solution toward the customized construction of multifunctional architectures via 3D printing for high-energy-density energy storage systems.

关键词： 3D printing NiCoP/MXene Asymmetric supercapacitor Energy density Tailorable loading

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Synergistic modulation of Li nucleation/growth enabled by CNTswrapped lithiophilic CoP/Co_(2)P decorated hollow carbon polyhedron host for stable lithium metal anodes

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Nano Research 2023年第4期16卷 4961-4969页

作者： Zhicui Song Yuchi Liu Zihao Wang Jianxiong Xing chaohui wei wei Zou Aijun Zhou Jingze Li School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Research and Development Center Tianqi Lithium Co.Ltd.Chengdu 610093China Lithium Resources and Lithium Materials Key Laboratory of Sichuan Province Tianqi Lithium CorporationChengdu 610000China

Infinite volume expansion and uncontrolled lithium dendrite growth are the main bottlenecks that greatly hinder the commercial application of lithium metal ***,derived from zeolitic imidazolate framework(ZIF)-67,carbon nanotubes(CNTs)-wrapped and CoP/Co_(2)P uniformly distributed nitrogen-doped hollow porous polyhedron carbon(CNT-CoP@NC)is elaborately designed as lithium metal host.A hybrid of N-doping and metallic phosphides modifications improves the lithiophilicity and reduces the nucleation barrier,consequently leading to homogeneous nucleation and smooth deposition of metallic lithium,thus suppresses the growth of Li ***,self-generated CNTs arrays efficiently reduce the local current ***,the reduced lithium is preferentially deposited into the hollow structure of CNT-CoP@NC and then filled the voids among the CNT-CoP@NC *** all-pervasive Li plating design can not only alleviate the volume effect,but also maximize the anode space *** from these synergistic modulations,even with an ultra-thin(7.2μm)anode layer of CNT-CoP@NC host,a high Coulombic efficiency for more than 400 cycles and an extended lifespan of 1,700 h under 1 mA·cm^(−2)can be *** paired with a competitive high mass loading(17.1 mg·cm^(−2))LiFePO4 cathode,a superb cycling stability(126.7 mAh·g^(−1)over 550 cycles)is recorded at 1 C.

关键词： lithium metal anodes metal organic framework hollow structure dendrite-free synergistic modulations

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Direct insight into sulfiphilicity-lithiophilicity design of bifunctional heteroatom-doped graphene mediator toward durable Li-S batteries

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Journal of Energy Chemistry 2022年第3期31卷 474-482,I0013页

作者： Haina Ci Menglei Wang Zhongti Sun chaohui wei Jingsheng Cai Chen Lu Guang Cui Zhongfan Liu Jingyu Sun College of Energy Soochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006JiangsuChina SUDA-BGI Collaborative Innovation Center Soochow UniversitySuzhou 215006JiangsuChina Beijing Graphene Institute(BGI) Beijing 100095China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Center for Nanochemistry(CNC) Beijing Science and Engineering Center for NanocarbonsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

The practical applications of lithium-sulfur(Li-S)battery have been greatly hindered by the severe polysulfide shuttle at the cathode and rampant lithium dendrite growth at the *** of the effective solutions deals with concurrent management of both ***,this direction remains in a nascent stage due to a lack of material selection and mechanism ***,we devise a temperature-mediated direct chemical vapor deposition strategy to realize the controllable synthesis of three-dimensional boron/nitrogen dual-doped graphene(BNG)particulated architectures,which is employed as a light-weighted and multi-functional mediator for both electrodes in Li-S *** from the“sulfiphilic”and“lithiophilic”features,the BNG modified separator not only enables boosted kinetics of polysulfide transformation to mitigate the shuttle effect but also endows uniform lithium deposition to suppress the dendritic *** calculations in combination with electro-kinetic tests and operando Raman analysis further elucidate the favorable sulfur and lithium electrochemistry of BNG at a molecular *** work offers direct insight into the mediator design via controllable synthesis of graphene materials to tackle the fundamental challenges of Li-S batteries.

关键词： Li-S batteries B/N dual-doped graphene Mediator Shuttle effect Lithium dendrite

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在经济政治海啸中保发展——马来西亚2008～2009年回顾与展望

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东南亚纵横 2009年第3期 3-8页

作者：韦朝晖广西社会科学院东南亚研究所

2008年，马来西亚在经济和政治上都经历了一场海啸：在经济上，遭遇世界金融危机以及国际原产品价格的巨幅波动，经济发展面临巨大挑战，由于政府采取有效措施积极应对，马来西亚经济发展速度虽有所放缓，但并没有出现衰退，基本上保住... 详细信息

2008年，马来西亚在经济和政治上都经历了一场海啸：在经济上，遭遇世界金融危机以及国际原产品价格的巨幅波动，经济发展面临巨大挑战，由于政府采取有效措施积极应对，马来西亚经济发展速度虽有所放缓，但并没有出现衰退，基本上保住了全年5％的经济增长率；在政治上，由于马来西亚国民阵线（下称“国阵”）在大选中首次丧失了2／3多数地位以及5个州的执政权，引发了“政治海啸”，政局出现波动，但随着各政党人事变动逐渐尘埃落定，政局发展逐渐明朗。外交上稳步发展，社会问题得到重视和一些相应的解决。

关键词：经济政治马来西亚海啸经济发展速度展望经济增长率产品价格金融危机

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发展口岸经济促进边境繁荣——胡志明与龙州暨第二届中越水口—驮隆口岸经济合作研讨会综述

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东南亚纵横 2006年第6期 1-4页

作者：韦朝晖广西社会科学院东南亚研究所

2006年5月18日，由龙州县人民政府和广西社会科学院东南亚研究所主办的“胡志明与龙州暨第二届中越水口——驮隆口岸经济合作研讨会”在中国广西龙州县举行。包括越南国家贸易部山区与边境贸易司、贸易研究院，越南社会科学院中国研究... 详细信息

2006年5月18日，由龙州县人民政府和广西社会科学院东南亚研究所主办的“胡志明与龙州暨第二届中越水口——驮隆口岸经济合作研讨会”在中国广西龙州县举行。包括越南国家贸易部山区与边境贸易司、贸易研究院，越南社会科学院中国研究所、世界经济与政治研究所、环境保护与可持续发展研究所、东南亚研究所、历史研究所，越南胡志明博物馆，越南胡志明研究院，越南高平省人民议会和人民委员会办公厅、贸易旅游厅，越南谅山省贸商旅游厅、越南老街省文化通讯厅以及与广西龙州县相邻的越南高平省复和县、下琅县、石安县、谅山省长定县领导等60多名越南专家学者以及政府官员，以及来自广西壮族自治区外事办公室，广西壮族自治区地税局研究所，广西社会科学院，广东社会科学院，云南社会科学院东南亚研究所，广西东南亚研究中心，广西壮族自治区党校，崇左市商务局，龙州县委、人大、政府、政协、各部委办局、边境乡镇和驻龙州的海关、边防、检验检疫单位等有关领导和国内的专家、学者等150多人参加了会议。

关键词：边境贸易口岸经济经济合作龙州县胡志明第二届研讨会综述广西壮族自治区水口南亚研究所

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景区悬臂栈道施工技术要点探析

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江西建材 2023年第8期 293-294,298页

作者：魏朝辉林昊福建建工集团有限责任公司福建福州350000

悬臂栈道是一种旅游景观工程,其施工技术较为复杂。文中以佛子山景区悬臂栈道工程为例,分析了该工程的施工难点,从逐步前探法、空段架设、打孔、钢筋锚固、安装模板、脚手架拆除、栈道施工、索道施工等方面对悬臂栈道工程的施工要点进... 详细信息

悬臂栈道是一种旅游景观工程,其施工技术较为复杂。文中以佛子山景区悬臂栈道工程为例,分析了该工程的施工难点,从逐步前探法、空段架设、打孔、钢筋锚固、安装模板、脚手架拆除、栈道施工、索道施工等方面对悬臂栈道工程的施工要点进行阐述,在保障安全与质量的前提下,确保其美观性。

关键词：悬臂栈道逐步前探法钢筋锚固栈道施工

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