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Boron modulating electronic structure of FeN4C to initiate high-efficiency oxygen reduction reaction and high-performance zinc-air battery

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Journal of Energy Chemistry 2022年第3期31卷 514-524,I0014页

作者： Xue Zhao Xue Li Zenghui Bi Yuwen wang Haibo Zhang Xiaohai Zhou Quan wang Yingtang Zhou Huaisheng Wang Guangzhi Hu Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072HubeiChina National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316004ZhejiangChina School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252000ShandongChina

The biggest challenge is to develop a low cost and readily available catalyst to replace expensive commercial Pt/C for efficient electrochemical oxygen reduction reaction(ORR).In this research,closo-[B_(12)H_(12)]^(2−)and 1,10-phenanthroline-iron complexes were introduced into the porous metal-organic framework by impregnation method,and further annealing treatment achieved the successful anchoring of single-atom-Fe in B-doped CN Matrix(FeN4CB).The ORR activity of FeN4CB is comparable to the widely used commercial 20 wt%Pt/C.Where the half-wave potential(E_(1/2))in alkaline medium up to 0.84 V,and even in the face of challenging ORR in acidic medium,the E_(1/2)of ORR driven by FeN4CB is still as high as 0.81 V.When FeN4CB was used as air cathode,the open circuit voltage of Zn-air battery reaches 1.435 V,and the power density and specific capacity are as high as 177 mW cm^(−2)and 800 mAh g_(Zn)^(−1)(theoretical value:820 mAh g_(Zn)^(−1)),respectively.The dazzling point of FeN4CB also appears in the high ORR stability,whether in alkaline or acidic media,E_(1/2)and limiting current density are still close to the initial value after 5000 times cycles.After continuously running the charge-discharge test for 220 h,the charge voltage and discharge voltage of the rechargeable zinc-air battery with FeN4CB as the air cathode maintained the initial state.Density functional theory calculations reveals that introducing B atom to Fe–N4–C can adjust the electronic structure to easily break O=O bond and significantly reduce the energy barrier of the rate-determining step resulting in an improved ORR activity.

关键词： Single-atom Fe B-doped CN Oxygen reduction reaction Zn-air battery Electronic modulation

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In-situ deposition of Pd/Pd_(4)S heterostructure on hollow carbon spheres as efficient electrocatalysts for rechargeable Li-O_(2)batteries

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Chinese Chemical Letters 2021年第6期32卷 2086-2090页

作者： Xiaomeng Liu Qishun Huang Jun wang Lanling Zhao Haoran Xu Qing Xia Deyuan Li Lei Qian Huaisheng Wang Jintao Zhang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJi'nan 250061China Key Laboratory for Colloid and Interface Chemistry(Ministry of Education) School of Chemistry and Chemical EngineeringShandong UniversityJi'nan 250061China School of Physics Shandong UniversityJi'nan 250100China School of Chemistry and Chemical Engineering Liao Cheng UniversityLiaocheng 252059China

The sluggish kinetics of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)have always restricted the development of lithium oxygen batteries(LOBs).Herein,hollow carbon spheres loaded with Pd/Pd_(4)S heterostructure(Pd/Pd_(4)S@HCS)were successfully prepared via the in-situ deposition to improve the electrocatalytic activities for both ORR and OER in LOBs.With the welldispersed Pd/Pd_(4)S nanoparticles,the hierarchical composite with large specific surface area offers favorable transport channels for ions,electron and oxygen.Especially,the Pd/Pd_(4)S nanoparticles could exhibit excellent electrochemical performance for ORR and OER due to their intrinsic catalytic property and interfacial effect from the heterostructure.Therefore,the LOBs with Pd/Pd_(4)S@HCS as cathode catalyst show improved specific capacities,good rate ability and stable cycling performance.

关键词： Hierarchical porous carbon sphere Pd/Pd_(4)S heterostructure In-situ deposition Enhanced electrocatalytic activity Lithium-oxygen batteries

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Advances of the functionalized carbon nitrides for electrocatalysis

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Carbon Energy 2022年第2期4卷 211-236页

作者： Qianqian Fan Jianan Su Tao Sun Zenghui Bi Huaisheng Wang Shusheng Zhang Qingju Liu Longzhou Zhang Guangzhi Hu Yunnan Key Laboratory for Micro/Nano Materials&Technology School of Materials and EnergyYunnan UniversityKunmingChina School of Chemistry and Chemical Engineering Liaocheng UniversityLiaochengChina College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhouChina Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunmingChina

Over the past few decades,the design and development of carbon materials have occurred at a rapid pace.In particular,these porous graphene-like carbon nitride materials have received considerable attention due to their superior structures and performances in the energy transformation field.In this review,nitrogenated holey two-dimensional graphene and polymeric carbon nitride will be discussed in depth.The structural properties,synthetic methods,and applications including electrocatalytic reactions,such as hydrogen evolution reaction,oxygen reduction reaction,oxygen evolution reaction,and nitrogen reduction reaction,will be presented in detail.Finally,we will present the outlooks on the current obstacles to the development of carbon nitride materials.This comprehensive understanding will help guide and motivate researchers to develop and modify carbon nitride materials with better properties in the future.

关键词： C_(2)N-h2D electrocatalysis PCN synthesis

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Electrospun Flexible Nanofibres for Batteries:Design and Application

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Electrochemical Energy Reviews 2023年第1期6卷 464-531页

作者： P.Robert Ilango A.Dennyson Savariraj Hongjiao Huang Linlin Li Guangzhi Hu Huaisheng Wang Xiaodong Hou Byung Chul Kim Seeram Ramakrishna Shengjie Peng Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504YunnanChina College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina Institute for Energy Studies University of North DakotaGrand ForksND 58202USA Department of Advanced Components and Materials Engineering Sunchon National University255 Jungang-roSuncheon-siJeollanam-do 57922Republic of Korea Department of Mechanical Engineering Khalifa University127788 Abu DhabiUnited Arab Emirates Department of Physics PSGR Krishnammal College for WomenCoimbatoreTamil Nadu 641004India School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252000LiaoningChina Mechanical Engineering National University of SingaporeSingapore 117583Singapore

Flexible and free-standing electrospun nanofibres have been used as electrode materials in electrochemical energy storage systems due to their versatile properties,such as mechanical stability,superb electrical conductivity,and high functionality.In energy storage systems such as metal-ion,metal-air,and metal-sulphur batteries,electrospun nanofibres are vital for constructing flexible electrodes and substantially enhancing their electrochemical properties.The need for flexible batteries has increased with increasing demand for new products such as wearable and flexible devices,including smartwatches and flexible displays.Conventional batteries have several semirigid to rigid components that limit their expansion in the flexible device market.The creation of flexible and wearable batteries with greater mechanical flexibility,higher energy,and substantial power density is critical in meeting the demand for these new electronic items.The implementation of carbon and carbon-derived composites into flexible electrodes is required to realize this goal.It is essential to understand recent advances and the comprehensive foundation behind the synthesis and assembly of various flexible electrospun nanofibres.The design of nanofibres,including those comprising carbon,N-doped carbon,hierarchical,porous carbon,and metal/metal oxide carbon composites,will be explored.We will highlight the merits of electrospun carbon flexible electrodes by describing porosity,surface area,binder-free and free-standing electrode construction,cycling stability,and performance rate.Significant scientific progress has been achieved and logistical challenges have been met in promoting secondary battery usage;therefore,this review of flexible electrode materials will advance this easily used and sought-after technology.The challenges and prospects involved in the timely development of carbon nanofibre composite flexible electrodes and batteries will be addressed.

关键词： Electrospinning Carbon composite Flexibility Electrode Batteries

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Fe_(2)O_(3)-decorated boron/nitrogen-co-doped carbon nanosheets as an electrochemical sensing platform for ultrasensitive determination of paraquat in natural water

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Chinese Chemical Letters 2023年第1期34卷 446-451页

作者： Meng Li Xinzhong wang Yelin Zhu Xiuxiu Jia Shusheng Zhang Huaisheng Wang Yongtao Li Guangzhi Hu School of Electronic Communication Technology Shenzhen Institute of Information TechnologyShenzhen 518172China College of Chemistry Zhengzhou UniversityZhengzhou 450000China Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China School of Materials Science and Engineering Liaocheng UniversityLiaocheng 252000China Joint Institute for Environmental Research and Education College of resources and environmentSouth China Agricultural UniversityGuangzhou 510642China

Boron/nitrogen-co-doped carbon(BCN)nanosheets decorated with Fe_(2)O_(3) nanocrystals(Fe_(2)O_(3)–BCN)were cast on a glassy carbon electrode(GCE)and applied as an electrochemical sensor to effectively detect paraquat(PQ),a toxic herbicide,in aqueous environments.A linear experiment performed using square wave voltammetry(SWV)under optimized experimental conditions produced a decent linear relationship and a low detection limit(LOD)of 2.74 nmol/L(S/N=3).Repeatability,reproducibility,stability,and interference experiments confirmed that the Fe_(2)O_(3)–BCN/GCE system exhibited decent electrochemical sensing performance for PQ molecules.Notably,the designed sensor showed high selectivity and a decent linear relationship with PQ concentration in natural water samples.To the best of our knowledge,this is the first study on the preparation of Fe_(2)O_(3)–BCN nanosheets for PQ detection.The proposed sensor can be employed as an effective alternative tool for distinguishing and processing PQ.

关键词： Paraquat Fe_(2)O_(3)-BCN Electrochemical sensor Contaminant detection

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Dermatofibrosarcoma protuberans of the chest wall： three-dimensional wide excision and reconstruction

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Chinese Medical Journal 2014年第2期127卷 386-388页

作者： Zhang Zhenyu Cen Ying Qing Yong wang huaisheng Liu Xiaoxue Department of Plastic and Burn Surgery West China Hospital Sichuan University Chengdu Sichuan 610041 China

Dermatofibrosarcoma protuberans （DFSP） is a poorly differentiated interstitial tumor that originates from the dermis. It occurs predominantly in the 20-50-year- old males. DFSP generally presents as local pink plaques or nodules and subsequently develops into nodular masses accompanied by infiltrative growth to the surrounding tissue, including muscle and bone.

关键词： dermatofibrosarcoma protuberans surgery chest wall reconstruction

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High-performance Li-ion batteries based on graphene quantum dot wrapped carbon nanotube hybrid anodes

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Nano Research 2020年第4期13卷 1044-1052页

作者： Xuewei Zhao Yizeng Wu Yunsong wang huaisheng Wu Yawei Yang Zhipeng wang Linxiu Dai Yuanyuan Shang Anyuan Cao Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing 100871China School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China

Since Akira Yoshino first proposed the usage of the carbonaceous materials as an anode of lithium ion batteries(LIBs)in 1985,carbonaceous materials such as graphite and graphene have been widely considered as LIB anodes.Here,we explored the application of novel carbonaceous UB anodes incorporating graphene quantum dots(GQDs).We fabricated a freestanding all-carbon electrode based on a porous carbon nanotube(CNT)sponge via a facile in-situ hydrothermal deposition technique,creating coaxial structure of GQD-coated CNTs(GQD@CNTs)through electrostatic interaction and n-n stacking with tunable loading and functionalization.This hybrid structure combined conductive CNTs with highly active GQDs,in which GQDs with predesigned functional groups provided massive storage sites for Li ions and the 3D CNT frameworks avoided the agglomeration of GQDs,together contributing to a high specific capacity(700 mAh·g^-1 at 100 mA·g^-1 after 100 cycles)and rate performance.Even at a high current density of 1,000 mA·g^-1,the reversible specific capacity remained at 483 mAh g-1 after 350 cycles.In particular,the mechanism study demonstrated the important role of oxygen functional groups of GQDs in promoting the performance of the LIB anodes by controlled grafting of GQDs onto various porous-carbon and metal-foam based structures.

关键词： graphene quantum dots carbon nanotubes lithium ion batteries anodes oxygen functional groups

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Defect engineering on carbon black for accelerated Li-S chemistry

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Nano Research 2020年第12期13卷 3315-3320页

作者： Wenlong Cai Yingze Song Yuting Fang Weiwei wang Songlin Yu huaisheng Ao Yongchun Zhu Yitai Qian Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry University of Science and Technology of ChinaHefei230026China State Key Laboratory of Environment-Friendly Energy Materials School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang621010China

Rationally designing sulfur hosts with the functions of confining lithium polysulfides(LiPSs)and promoting sulfur reaction kinetics is critically important to the real implementation of lithium-sulfur(Li-S)batteries.Herein,the defect-rich carbon black(CB)as sulfur host was successfully constructed through a rationally regulated defect engineering.Thus-obtained defect-rich CB can act as an active electrocatalyst to enable the sulfur redox reaction kinetics,which could be regarded as effective inhibitor to alleviate the LiPS shuttle.As expected,the cathode consisting of sulfur and defect-rich CB presents a high rate capacity of 783.8 mA·h·g^−1 at 4 C and a low capacity decay of only 0.07% per cycle at 2 C over 500 cycles,showing favorable electrochemical performances.The strategy in this investigation paves a promising way to the design of active electrocatalysts for realizing commercially viable Li-S batteries.

关键词： Li-S chemistry defect engineering carbon black sulfur reaction kinetics

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A nomogram based on lymphocyte percentage for predicting hospital mortality in exertional heatstroke patients: a 13-year retrospective study

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World Journal of Emergency Medicine 2023年第6期14卷 434-441页

作者： Jiale Yang Fanghe Gong Xuezhi Shi Fanfan wang Jing Qian Lulu Wan Yi Chen huaisheng Chen Huasheng Tong Guangzhou University of Chinese Medicine Guangzhou 510006China Department of Intensive Care Unit General Hospital of Southern Theatre Command of PLAGuangzhou 510010China Department of Neurosurgery General Hospital of Southern Theatre Command of PLAGuangzhou 510010China Department of Intensive Care Unit Dongguan Binhaiwan Central HospitalDongguan 523900China Department of Critical Care Medicine Shenzhen People's HospitalShenzhen 518020China

BACKGROUND: Exertional heatstroke(EHS) is a life-threatening disease without ideal prognostic markers for predicting hospital mortality.METHODS: This is a single-center retrospective study. Clinical data from EHS patients admitted to the Intensive Care Unit(ICU) of the General Hospital of Southern Theatre Command between January 1, 2008, and December 31, 2020, were recorded and analyzed. Univariate and multivariate logistic regression were used to identify the factors for mortality. The prediction model was developed with the prognostic markers, and a nomogram was established.RESULTS: The study ultimately enrolled 156 patients, and 15(9.6%) of patients died before discharge. The lymphocyte count(Lym) and percentage(Lym%) were significantly lower in nonsurvivors(P<0.05). The univariate and multivariate logistic regression analyses indicated that Lym% at the third day of admission(Lym% D3)(OR=0.609, 95%CI: 0.454–0.816) and hematocrit(HCT)(OR=0.908, 95%CI: 0.834–0.988) were independent protective factors for hospital mortality. A nomogram incorporating Lym% D3 with HCT was developed and demonstrated good discrimination and calibration ability. The comparison between the prediction model and scoring systems revealed that the prediction model had the largest area under the curve(AUC)(0.948, 95%CI: 0.900–0.977), with 100.00% sensitivity and 83.69% specificity, and a greater clinical net benefit.CONCLUSION: Severe EHS patients had a higher risk of experiencing prolonged lymphopenia. A nomogram based on Lym% D3 and HCT was developed to facilitate early identification and timely treatment of patients with potentially unfavorable prognoses.

关键词： Exertional heatstroke Lymphopenia Nomogram Prognosis

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Finite element analysis of temperature distribution of polycrystalline silicon thin film transistors under self-heating stress

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Frontiers of Electrical and Electronic Engineering in China 2009年第2期4卷 227-233页

作者： Huaisheng Wang Mingxiang wang Zhenyu YANG Department of Microelectronics Soochow UniversitySuzhou 215021China

The temperature distribution of typical n-type polycrystalline silicon thin film transistors under selfheating(SH)stress is studied by finite element analysis.From both steady-state and transient thermal simulation,the influence of device power density,substrate material,and channel width on device temperature distribution is analyzed.This study is helpful to understand the mechanism of SH degradation,and to effectively alleviate the SH effect in device operation.

关键词： finite element analysis(FEA) temperature distribution thin film transistors self-heating steady-state transient state

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