检索结果-南通市图书馆

Cross-Linked Hollow Graphitic Carbon as Low-Cost and High-Performance Anode for Potassium Ion Batteries

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2021年第3期4卷 451-457页

作者： yanhong feng Suhua Chen Dongyang Shen Jiang Zhou Bingan Lu School of Physics and Electronics Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and DevicesState Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China School of Materials Science and Engineering Central South UniversityChangsha 410083China

Large-scale and low-cost preparation of carbon-based potassium anode with long life and high capacity is one of the footstones for the development of potassium ion batteries(PIBs).Herein,a low-cost carbon-based material,cross-linked hollow graphitic carbon(HGC),is large scale synthesized to apply for PIBs *** hollow structure can afford sufficient space to overcome the damage caused by the volume expansion of graphitic carbon(GC).While the cross-linked structure forms a compact interconnection network that allows electrons to rapid transfer between different GC *** measurements demonstrated that the HGC anode exhibited low charge/discharge plateau(about 0.25 V and 0.1 V)and excellent specific capacity as high as 298 m A h g^(-1)at the current density of 50 m A g^(-1).And more important,after 200 cycles the capacity of HGC anode still shows 269 m A h g^(-1)(the decay rate of per cycle is only 0.048%).Meanwhile,the use of commercial traditional electrolyte(KPF_(6))and cheap raw materials that provide new hope for trying and realizing the large-scale production of PIBs based on carbon anode materials.

关键词： cross-linked hollow structure graphitic material high reversibility potassium ion battery

Designing g-C_(3)N_(4)/N-Rich Carbon Fiber Composites for High-Performance Potassium-Ion Hybrid Capacitors

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2021年第4期4卷 638-645页

作者： Qing Shen Pengjie Jiang Hongcheng He yanhong feng Yong Cai Danni Lei Mengqiu Cai Ming Zhang Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and DevicesSchool of Physics and ElectronicsHunan UniversityChangsha 410082China State Key Laboratory of Optoelectronic Materials and Technologies School of Materials Science and EngineeringSun Yat-Sen(Zhongshan)UniversityGuangzhou 510275China Synergetic Innovation Center for Quantum Effects and Applications(SICQEA) Hunan Normal UniversityChangsha 410081China

Potassium-based energy storage devices(PEDS)are considered as hopeful candidates for energy storage applications because of the abundant potassium resources in nature and high mobility in the *** carbon materials show great potential for potassium-ion storage,poor rate performance,and unsatisfactory cycle lifespan in existing carbon-based PIBs anode,it also cannot match the dynamics and stability of the capacitor *** doping has been proven to be a effective modification strategy to improve the electrochemical performance of carbon ***,we prepare carbon nanofibers and g-C_(3)N_(4)composites with high nitrogen contents(19.78 at%);moreover,the sum of pyrrolic N and pyridinic N is up to 59.51%.It achieves high discharge capacity(391 m Ah g^(-1)at0.05 A g^(-1)),rate capacity(141 m Ah g^(-1)at 2 A g^(-1)),and long cycling performance(201 m Ah g^(-1)at 1 A g^(-1)over 3000 cycles)when as an anode for ***,it can deliver promising discharge capacity of132 m Ah g^(-1)at 0℃.Moreover,as battery anode for potassium-ion hybrid capacitors(PIHC)device with an active carbon cathode,it delivers energy/power density(62 and 2102 W kg^(-1))as well as high reversible capacity(106 m Ah g^(-1)at 1 A g^(-1)).

关键词： carbon nitride pyrrolic n pyridinic n potassiumion battery potassium-ion hybrid capacitor

Engineering of yolk-shelled FeSe_(2)@nitrogen-doped carbon as advanced cathode for potassium-ion batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第11期32卷 3601-3606页

作者： Chang Liu Yujie Li yanhong feng Sen Zhang Di Lu Boyun Huang Tao Peng Weiwei Sun College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China School of Physics and Electronics Hunan UniversityChangsha 410082China School of Physics and Electronic Engineering Xinyang Normal UniversityXinyang 464000China

Potassium-ion batteries(KIBs)have become the most promising alternative to lithium-ion batteries for large-scale energy storage system due to their abundance and low ***,previous reports focused on the intercalation-type cathode materials usually showed an inferior capacity,together with a poor cyclic life caused by the repetitive intercalation of large-size K-ions,which hinders their practical ***,we combine the strategies of carbon coating,template etching and hydrothermal selenization to prepare yolk-shelled FeSe_(2)@N-doped carbon nanoboxes(FeSe_(2)@C NBs),where the inner highly-crystalline FeSe_(2)clusters are completely surrounded by the self-supported carbon *** integrated and highly conductive carbon shell not only provides a fast electron/ion diffusion channel,but also prevents the agglomeration of FeSe_(2)*** evaluated as a conversion-type cathode material for KIBs,the FeSe_(2)@C NBs electrode delivers a relatively high specific capacity of 257 mAh/g at 100 mA/g and potential platform of about 1.6 V,which endow a high energy density of about 411 Wh/*** importantly,by designing a robust host with large internal void space to accommodate the volumetric variation of the inner FeSe_(2)clusters,the battery based on FeSe_(2)@C NBs exhibits ultra-long cycle ***,even after 700 cycles at 100 mA/g,a capacity of 221 mAh/g along with an average fading rate of only 0.02%can be retained,which achieves the optimal balance of high specific capacity and long-cycle stability.

关键词： Potassium battery Yolk-shell structure FeSe_(2) Conversion-type cathode High energy density

Superstable potassium metal batteries with a controllable internal electric field

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2023年第5期3卷 813-821页

作者： Hongbo Ding yanhong feng Jiang Zhou Xinzhi Yu Ling Fan Bingan Lu School of Physics and Electronics State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China School of Materials Science and Engineering and Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of EducationCentral South UniversityChangsha 410083China

Stable potassium metal batteries(PMBs)are promising candidates for electrical energy storage due to their ability to reversibly store electrical energy at a low ***,dendritic growth and large volume changes hinder their practical ***,referring to the morphology and structure of a virus,a bionic virus-like-carbon microsphere(BVC)was designed as the anode host for a PMB.A BVC with a three-dimensional structure can not only control the electric field,which can suppress dendrite formation,but can also provide a larger space to accommodate the volume change during the cycle *** designed potassium(K)metal anode exhibits excellent cycle life and stability(during 1800 h of repeated plating/stripping of K at a current density of 0.1 mA cm−2,K-BVC can realize a very stable K metal anode with low voltage hysteresis).Stable cyclability and improved rate capability can be realized in a full cell using Prussian blue over 400 *** research provides a new idea for the development of stable K metal anodes and may pave the way for the practical application of next-generation metal batteries.

关键词： Bionic structures K metal anodes Internal electric field Dendrite inhibition 3D scaffolds

Cyclic-anion salt for high-voltage stable potassium-metal batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2022年第10期9卷 177-187页

作者： Yanyao Hu Ling Fan Apparao M.Rao Weijian Yu Caixiang Zhuoma yanhong feng Zhihui Qin Jiang Zhou Bingan Lu School of Physics and Electronics Hunan University Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University School of Materials Science and Engineering Central South University

Electrolyte anions are critical for achieving high-voltage stable potassium-metal batteries(PMBs).However,the common anions cannot simultaneously prevent the formation of ’dead K’ and the corrosion of Al current collector,resulting in poor cycling ***,we demonstrate cyclic anion of hexafluoropropane-1,3-disulfonimide-based electrolytes that can mitigate the ’dead K’ and remarkably enhance the high-voltage stability of ***,even using low salt concentration(0.8 M) and additive-free carbonate-based electrolytes,the PMBs with a high-voltage polyanion cathode(4.4 V) also exhibit excellent cycling stability of 200 cycles with a good capacity retention of 83%.This noticeable electrochemical performance is due to the highly efficient passivation ability of the cyclic anions on both anode and cathode *** cyclic-anion-based electrolyte design strategy is also suitable for lithium and sodium-metal battery technologies.

关键词： cyclic anion low concentration additive-free electrolyte high-voltage potassium-metal batteries solid-electrolyte interface

Co-activation for enhanced K-ion storage in battery anodes

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2023年第7期10卷 183-195页

作者： yanhong feng Yawei Lv Hongwei Fu Mihir Parekh Apparao M.Rao He Wang Xiaolin Tai Xianhui Yi Yue Lin Jiang Zhou Bingan Lu School of Physics and Electronics Hunan University Department of Physics and Astronomy Clemson Nanomaterials Institute Clemson University Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of China School of Materials Science and Engineering Central South University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University

The relative natural abundance of potassium and potentially high energy density has established potassium-ion batteries as a promising technology for future large-scale global energy ***,the anodes’ low capacity and high dis charge platform lead to low energy density,which impedes their rapid ***,we present a possible co-activation mechanism between bismuth(Bi) and tin(Sn)that enhances K-ion storage in battery *** co-activated Bi-Sn anode delivered a high capacity of634 mAh g-1,with a discharge plateau as low as 0.35 V,and operated continuously for 500 cycles at a current density of 50 mA g-1,with a high Coulombic efficiency of 99.2%.This possible co-activation strategy for high potassium storage may be extended to other Na/Zn/Ca/Mg/Al ion battery technologies,thus providing insights into how to improve their energy storage ability.

关键词： potassium ion batteries anode co-activation high reversible capacity

Industrial-Scale Polypropylene–Polyethylene Physical Alloying Toward Recycling

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Engineering 2022年第2期8卷 95-100页

作者： Jinping Qu Zhaoxia Huang Zhitao Yang Guizhen Zhang Xiaochun Yin yanhong feng Hezhi He Gang Jin Ting Wu Guangjian He Xianwu Cao National Engineering Research Center of Novel Equipment for Polymer Processing&Key Laboratory of Polymer Processing Engineering of the Ministry of Education&Guangdong Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou 510640China

Polypropylene(PP)and polyethylene(PE)play central roles in our daily ***,their immiscibility presents a major hurdle in both industry and academia when recycling them into alloys with favorable mechanical ***,typical compatibilizer-enabled approaches are limited due to increased environmental ***,inspired by a traditional Chinese technique,we report a facile,industry-scale methodology that produces a PP/PE binary blend with a highly ordered honeycomb nanostructure without any *** to its nanostructure,the blend exhibits enhanced tensile properties in com-parison with the parent components or with a sample prepared using an internal *** approach has potential for applications not only in immiscible polymer blending,but also in non-sorting,compatibilizer-free waste plastics *** this technique,we expect that an environmentally friendly and sustainable plastic wastes recycling avenue can be found,and great economic benefits can be gained.

关键词： Polypropylene Polyethylene Physical alloying Honeycomb structure

Validation of the Nanjing Criteria for Diagnosing Pyrrolizidine Alkaloids-induced Hepatic Sinusoidal Obstruction Syndrome

在线全文

学校读者我要写书评

暂无评论

Journal of Clinical and Translational Hepatology 2021年第3期9卷 345-352页

作者： Wei Zhang Lu Liu Ming Zhang feng Zhang Chunyan Peng Bin Zhang Jun Chen Lin Li Jian He Jiangqiang Xiao yanhong feng Xunjiang Wang Aizhen Xiong Li Yang Xiaoping Zou Yuecheng Yu Yuzheng Zhuge Department of Gastroenterology The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingJiangsuChina Department of Gastroenterology The Affiliated Jiangning Hospital of Nanjing Medical UniversityNanjingJiangsuChina Department of Pathology The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingJiangsuChina Department of Imaging The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjingJiangsuChina Department of Hepatology Nanjing Second HospitalNanjing University of Chinese MedicineNanjingJiangsuChina The Ministry of Education Key Laboratory for Standardization of Chinese Medicines Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghaiChina Liver Diseases Center of PLA and Department of Infectious Diseases General Hospital of Eastern Theater Commandand Bayi Hospital Affiliated to Nanjing University of Chinese MedicineNanjingJiangsuChina

Background and Aims:Hepatic sinusoidal obstruction syndrome(HSOS)is caused by toxic injury to sinusoidal endothelial cells in the *** intake of pyrrolizidine alkaloids(PAs)in some Chinese herbal remedies/plants remains the major etiology for HSOS in ***,new diagnostic criteria for PA-induced HSOS(***-HSOS)have been developed;however,the efficacy has not been clinically *** study aimed to assess the performance of the Nanjing criteria for ***:Data obtained from consecutive patients in multiple hospitals,which included 86 PA-HSOS patients and 327 patients with other liver diseases,were retrospectively ***,the diagnostic performance of the Nanjing criteria and simplified Nanjing criteria were evaluated and *** study is registered in ***(ID:ChiCTR1900020784).Results:The Nanjing criteria have a sensitivity and specificity of 95.35%and 100%,respectively,while the simplified Nanjing criteria have a sensitivity and specificity of 96.51%and 96.33%,respectively,for the diagnosis of ***,a proportion of patients with Budd-Chiari syndrome(11/49)was misdiagnosed as PA-HSOS on the basis of the simplified Nanjing criteria,and this was mainly due to the overlapping features in the enhanced computed tomography/magnetic resonance imaging ***,most of these patients(10/11)had occlusion or thrombosis of the hepatic vein,and communicating vessels in the liver were found in 8/11 patients,which were absent in PA-HSOS ***:The Nanjing criteria and simplified Nanjing criteria exhibit excellent performance in diagnosing ***,both could be valuable diagnostic tools in clinical practice.

关键词： Drug-induced liver injury Hepatic sinusoidal obstruction syndrome Pyrrolizidine alkaloids Sensitivity Specificity

Free-standing N-doped hollow carbon fibers as high-performance anode for potassium ion batteries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Materials 2021年第3期64卷 547-556页

作者： Suhua Chen yanhong feng Jue Wang Erjin Zhang Xinzhi Yu Bingan Lu School of Physics and Electronics Hunan UniversityChangsha410082China College of Chemistry and Chemical Engineering Central South UniversityChangsha410083China Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan UniversityChangsha410082China

A novel hierarchical architecture—N-doped hollow carbon fibers decorated with N-doped carbon clusters(NHCF@NCC)—was synthesized for high-performance anode material of potassium ion batteries(PIBs).The material is formulated with porous N-doped hollow carbon fibers as the backbone,which effectively shortens the diffusion length of potassium ion and increases the interface between the electrode and *** addition,the N-doped carbon clusters attached on the hollow carbon fibers can provide abundant reactive ***,NHCF@NCC could form a freestanding electrode with a three dimensional interconnected conductive network owing to the ultrahigh aspect *** this way,NHCF@NCC delivers an excellent electrochemical performance as free-standing anode materials of PIBs,exhibiting a high reversible capacity of 310 mA h g^−1 at a current density of 100 mA g^−1,a long cycling stability of 1000 cycles with negligible degradation,and a superior rate performance of 153 mA h g^−1 at a large current density of 2000 mA g^−1.

关键词： potassium anode n]N-doped hollow carbon fibers N-doped carbon cluster free-standing