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Multidimensional(0D-3D)functional nanocarbon:Promising material to strengthen the photocatalytic activity of graphitic carbon nitride

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Green Energy & Environment 2021年第6期6卷 823-845页

作者： Bin He Mi Feng Xinyan Chen Jian Sun School of Life Science Beijing Institute of TechnologyBeijing100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing100081China

As a prospective visible-light-responsive photochemical material,graphitic carbon nitride(g-C_(3)N_(4))has become a burgeoning research hot topics and aroused a wide interest as a metal-free semiconductor in the area of energy utilization and conversion,environmental protection due to its unique properties,such as facile synthesis,high physicochemical stability,excellent electronic band structure,and sustainability.However,the shortcomings of high recombination rate of charge carriers,relatively low electrical conductivity and visible light absorption impede its practical application.Various strategies,such as surface photosensitization,heteroatom deposition,semiconductor hybridization,etc.,have been applied to overcome the barriers.Among all the strategies,functional nanocarbon materials with various dimensions(0D~3D)attract much attention as modifiers of g-C_(3)N_(4)due to their unique electronic properties,optical properties,and easy functionalization.More importantly,the properties of these functional nanocarbon materials can be tuned by various dimensions and thus there will be a way to overcome the defects of g-C_(3)N_(4)by choosing different dimensional carbon materials.Distinguishing from some present reviews,this review starts with the fundamental physicochemical characteristics of g-C_(3)N_(4)materials,followed by analyzing the advantages of functional nanocarbon materials modifying gC_(3)N_(4).Then,we present a systematic introduction to various dimensional carbon materials.The design philosophy of carbon/g-C_(3)N_(4)composites and the advanced studies are exemplified in detail.Finally,a nichetargeting summary and outlook on the major challenges,opportunities for future research in high-powered carbon/g-C_(3)N_(4)composites was proposed.

关键词： Graphitic carbon nitride(g-C_(3)N_(4)) carbon materials Multidimension Photocatalysis Visible light

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An improved Hummers method to synthesize graphene oxide using much less concentrated sulfuric acid

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Chinese Chemical Letters 2022年第10期33卷 4541-4544页

作者： Yanbin Zhu Gang Kong Yuling Pan Lian Liu Bo Yang Shuanghong Zhang Delin Lai Chunshan Che School of materials Science and Engineering South China University of TechnologyGuangzhou 510641China Guangzhou Special Pressure Equipment Inspection and Research Institute Guangzhou 510663China

The production of graphene oxide with less acid is beneficial to reduce the costs and lower the impact on the environment,but it is still a great challenge.In this work,a relatively simple,safe method for synthesizing graphene oxide with much less acid(decrease∼40%)is proposed.With assistance of the heat absorbed from environment and reaction system,the temperature of reaction system of low acid can be well controlled.More interestingly,the graphite can be completely oxidized into graphite oxide by using much less acid,with lowering the production of high-concentration aqueous waste acid(>1 mol/L,decrease∼40%).A series of characterizations show that the prepared graphene oxide has similar yield and functional groups compared with that of using the conventional method.This work provides a safe and environmentally friendly choice for the large-scale production of graphene oxide and its derivative materials.

关键词： Graphene oxide carbon materials Oxidation Low acid Hummers method

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New insights into carbon-based and MXene anodes for Na and K-ion storage: A review

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Journal of Energy Chemistry 2021年第11期30卷 660-691,I0016页

作者： Zhensheng Hong Hajar Maleki Tim Ludwig Yichao Zhen Michael Wilhelm Damin Lee Kwang-Ho Kim Sanjay Mathur Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy materials College of Physics and EnergyFujian Normal UniversityFuzhou 350117FujianChina Institute of Inorganic Chemistry University of CologneGreinstr.650939 CologneGermany Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting materials and Engineering Fuzhou 350117FujianChina Global Frontiers of Hybrid Interfacial materials Pusan National UniversitySouth Korea

Na-ion batteries and K-ion batteries are promising alternatives to vastly used lithium-ion batteries mainly due to the larger natural abundance of sodium and potassium resources. carbon-based and MXene materials have received increasing attention due to their unique layered structure to accommodate the larger sodium and potassium ions. It’s proposed that ionic size disparity (K^(+): 1.38 Å;Na^(+): 0.97 Å;Li^(+): 0.76 Å) leads to sluggish intercalation and extraction kinetics in larger alkali metal ions (AMIs). Nevertheless, the electrochemical inactivity of sodium intercalation in graphite suggests that different chemical properties of AMs and their interactions with carbon host and electrolytes is crucial for interfacial instability and irreversible capacity loss. Structural modifications by expanding interlayer spacing and defect engineering enable reduced diffusion barriers and enhanced insertion of sodium or potassium, but it blurs the electrochemical performance between battery and capacitor. This review provides insight into 2D carbon materials and their architectures for Na and K-ion batteries through an in-depth analysis of structure–property interdependence and different electrochemical mechanisms supported by both experimental and theoretical data to discuss the promises and challenges of post-lithium batteries. Finally, the perspectives and potential directions regarding material design concepts for 2D carbon-based nanomaterials and MXene phases for metal-ion storage are proposed.

关键词： Na-ion batteries K-ion batteries Anode carbon materials Structure design

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An Overview of Stretchable Supercapacitors Based on carbon Nanotube and Graphene

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Chinese Journal of Polymer Science 2020年第5期38卷 491-505,I0006页

作者： Wen-Le Ma Zhi-Hao Cai Yi Zhang Zi-Yuan Wang Lun Xia Su-Ping Ma Guang-Hao Li Yi Huang National Institute for Advanced materials Tianjin Key Laboratory of Metal and Molecule Based Material ChemistryKey Laboratory of Functional Polymer MaterialsCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)School of Materials Science and EngineeringNankai UniversityTianjin 300350China Beijing Institute of Aeronautical materials Beijing 100095China

The wearable demand of modern electronic devices makes flexible and stretchable energy storage device urgently needed.Stretchable and flexible supercapacitors(SCs)are energy storage devices that provide ultrahigh power density while having long-term durability,high security,and electrochemical stability.Among different SCs electrode materials,CNTs and graphene-based materials exhibit great potential in terms of stretchable SCs due to its ultrahigh electrical conductivity,large specific surface area and good mechanical properties.In this review,the state-of-the-art process and achievements in the field of stretchable SCs enabled by CNTs and graphene are presented,which include the novel design strategy,mechanical and electrochemical properties.The final section highlights current challenges and future perspectives on research in this thriving field.

关键词： Stretchable Supercapacitors carbon materials Graphene CNTs

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Porous carbon layers wrapped CoFe alloy for ultrastable Zn-Air batteries exceeding 20,000 charging-discharging cycles

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Journal of Energy Chemistry 2021年第10期30卷 327-335,I0010页

作者： Fang Shi Kaiyue Zhu Xiaoke Li Erdong Wang Xuefeng Zhu Weishen Yang State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences457 Zhongshan RoadDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Division of Full Cell and Battery Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Developing high active and stable bifunctional electrocatalysts towards oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is essential for the development of rechargeable Zn-air batteries.Herein,a facile strategy to synthesize the porous carbon layers wrapped CoFe alloy(C/CoFe)through the pyrolysis of a homogeneous mixture containing Co,Fe ions and N-doped carbon quantum dots(Ndoped CQDs)was reported.The prepared carbon layers with multi-level pore structures provides more active sites and optimizes the homogeneity of the electron and mass transport.In addition,the carbon layers,which is doped by Co/Fe/N atoms,is responsible for high ORR activity,while the CoFe alloy plays a vital role in OER performance.The as-synthesized catalyst exhibits an excellent bifunctionality for electrochemical oxygen reactions,which is comparable to the commercial Pt/C and IrO2 benchmarks.Owing to the carbon layers protects CoFe alloy nanoparticles from the harsh environment,the rechargeable Znair battery with the C/CoFe catalyst delivers excellent stability during 20,000 charging-discharging cycles.

关键词： Rechargeable Zn-air battery Oxygen reduction reaction Oxygen evolution reaction carbon materials CoFe alloy

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Recent advances in carbon nanostructures prepared from carbon dioxide for high-performance supercapacitors

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Journal of Energy Chemistry 2021年第3期30卷 352-367页

作者： Chen Li Xiong Zhang Kai Wang Fangyuan Su Cheng-Meng Chen Fangyan Liu Zhong-Shuai Wu Yanwei Ma Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of carbon materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

The burgeoning global economy during the past decades gives rise to the continuous increase in fossil fuels consumption and rapid growth of CO_(2) emission,which demands an urgent exploration into green and sustainable devices for energy storage and power management.Supercapacitors based on activated carbon electrodes are promising systems for highly efficient energy harvesting and power supply,but their promotion is hindered by the moderate energy density compared with batteries.Therefore,scalable conversion of CO_(2) into novel carbon nanostructures offers a powerful alternative to tackle both issues:mitigating the greenhouse effect caused by redundant atmospheric CO_(2) and providing carbon materials with enhanced electrochemical performances.In this tutorial review,the techniques,opportunities and barriers in the design and fabrication of advanced carbon materials using CO_(2) as feedstock as well as their impact on the energy-storage performances of supercapacitors are critically examined.In particular,the chemical aspects of various Cv2 conversion reactions are highlighted to establish a detailed understanding for the science and technology involved in the microstructural evolution,surface engineering and porosity control of CO_(2)-converted carbon nanostructures.Finally,the prospects and challenges associated with the industrialization of CO_(2) conversion and their practical application in supercapacitors are also discussed.

关键词： carbon materials Supercapacitors CO_(2)conversion Nanostructures

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A Simple Method to Synthesize Multi-branched carbon Fibers Using Cupric Chloride Aqueous Solution as Catalyst Precursor

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Journal of materials Science & Technology 2014年第9期30卷 917-921页

作者： Qiuxiang Wang Qian Zhang Liping Chen Liyan Yu Lifeng Dong College of materials Science and Engineering Qingdao University of Science and Technology Yangzhou Polytechnic Institute Department of Physics Astronomy and Materials Science Missouri State UniversitySpringfield MO 65897 USA

carbon fibers with multi-branched structures were synthesized by chemical vapor deposition method using cupric chloride as catalyst precursor and acetylene as carbon source at different reaction temperatures. Effects of water vapor and reaction temperature on the growth mode of carbon fibers were investigated. Experimental results demonstrate that initial reaction conditions and temperature are key factors for the formation of different carbon materials. carbon fibers with typical multi-branched structures can be obtained at 450 ℃ when cupric chloride solution was used as catalyst precursor. X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy are used to characterize carbon materials, and the growth mechanisms of multi-branched carbon fibers were discussed.

关键词： Amorphous materials carbon materials Electron microscopy Microstructure

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Egg shell waste as an activation agent for the manufacture of porous carbon

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Chinese Journal of Chemical Engineering 2020年第3期28卷 896-900页

作者： Yawei Shi Guozhu Liu Mingde Li Liang Wang State Key Laboratory of Separation Membranes and Membrane Processes School of Environmental Science and EngineeringTianjin Polytechnic UniversityTianjin 300387China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China Hangzhou Environmental Protection Research Institute of China Coal Technology&Engineering Group Hangzhou 311201China

Egg shell waste was used as an activation agent directly for the manufacture of a biomass-derived porous carbon,which possessed a surface area of 626 m2·g-1 and was rich in nitrogen,sulfur and oxygen functionalities.The activation mechanism was proposed,and the carbon showed its potential to act as an adsorbent for the adsorptive removal of various contaminants from both aqueous and non-aqueous solutions,possessing maximum adsorption capacities of 195.9,185.1,125.5 and 44.6 mg·g-1 for sulfamethoxazole,methyl orange,diclofenac sodium and dibenzothiophene,respectively.Through the utilization of egg shell waste as a sustainable activation agent,this work may help to make the widely applied biomass-derived porous carbons more economical and ecological.

关键词： carbon materials Porous materials Egg shell Activation agent Biomass

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carbon material-based anodes in the microbial fuel cells

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carbon Energy 2021年第3期3卷 449-472页

作者： Xiaoqi Fan Yun Zhou Xueke Jin Rong-Bin Song Zhaohui Li Qichun Zhang Henan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical Applications School of Ecology and EnvironmentZhengzhou UniversityZhengzhouChina Department of materials Science and Engineering City University of Hong KongKowloonHong KongChina

For the performance improvement of microbial fuel cells(MFCs),the anode becomes a breakthrough point due to its influence on bacterial attachment and extracellular electron transfer(EET).On other level,carbon materials possess the following features:low cost,rich natural abundance,good thermal and chemical stability,as well as tunable surface properties and spatial structure.Therefore,the development of carbon materials and carbon-based composites has flourished in the anode of MFCs during the past years.In this review,the major carbon materials used to decorate MFC anodes have been systematically summarized,based on the differences in composition and structure.Moreover,we have also outlined the carbon material-based hybrid biofilms and carbon material-modified exoelectrogens in MFCs,along with the discussion of known strategies and mechanisms to enhance the bacteria-hosting capabilities of carbon material-based anodes,EET efficiencies,and MFC performances.Finally,the main challenges coupled with some exploratory proposals are also expounded for providing some guidance on the future development of carbon material-based anodes in MFCs.

关键词： carbon materials cell surface modification extracellular electron transfer hybrid biofilm microbial fuel cells

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High-capacity porous carbons prepared by KOH activation of activated carbon for supercapacitors

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Chinese Chemical Letters 2014年第6期25卷 865-868页

作者： Yong Xiao Chao Long Ming-Tao Zheng Han-Wu Dong Bing-Fu Lei Hao-Ran Zhang Ying-Liang Liu Department of Applied Chemistry South China Agricultural University

High-performance supercapacitor electrode materials are prepared from the commercially available activated carbon （AC） through a facile and low-cost chemical activation method. The obtained results show that AC activated by KOH with an alkali/carbon ratio of 6/1 （ACK6） possesses a specific surface area of 3405 m^2/g, a large pore volume of 2.01 cm^3/g, and exhibits the highest initial specific capacitance of 335 F/g at the current density of 0.5 A/g in 6 mol/L KOH, and 85% coloumbic efficiency for 5000 cycles at 20 mV/s.

关键词： carbon materials Amorphous materials Electrical properties

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