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MOF-derived 1D/3D N-doped porous carbon for spatially confined electrochemical CO2 reduction to adjustable syngas

carbon ENERGY 2024年第8期6卷 1-13页

作者： Zhang, Wei Li, Hui Feng, Daming Wu, Chenglin Sun, Chenghua Jia, Baohua Liu, Xue Ma, Tianyi Liaoning Univ Inst Clean Energy Chem Coll Chem Key Lab Green Synth & Preparat Chem Adv Mat Shenyang 110036 Liaoning Peoples R China RMIT Univ Sch Sci Melbourne Vic 3000 Australia Taizhou Univ Sch Pharmaceut & Chem Engn Taizhou Zhejiang Peoples R China Swinburne Univ Technol Dept Chem & Biotechnol Hawthorn Vic Australia

Electrochemical reduction of CO2 to syngas (CO and H-2) offers an efficient way to mitigate carbon emissions and store intermittent renewable energy in chemicals. Herein, the hierarchical one-dimensional/three-dimensional nitrogen-doped porous carbon (1D/3D NPC) is prepared by carbonizing the composite of Zn-MOF-74 crystals in situ grown on a commercial melamine sponge (MS), for electrochemical CO2 reduction reaction (CO2RR). The 1D/3D NPC exhibits a high CO/H-2 ratio (5.06) and CO yield (31 mmol g(-1) h(-1)) at -0.55 V, which are 13.7 times and 21.4 times those of 1D porous carbon (derived from Zn-MOF-74) and N-doped carbon (carbonized by MS), respectively. This is attributed to the unique spatial environment of 1D/3D NPC, which increases the adsorption capacity of CO2 and promotes electron transfer from the 3D N-doped carbon framework to 1D carbon, improving the reaction kinetics of CO2RR. Experimental results and charge density difference plots indicate that the active site of CO2RR is the positively charged carbon atom adjacent to graphitic N on 1D carbon and the active site of HER is the pyridinic N on 1D carbon. The presence of pyridinic N and pyrrolic N reduces the number of electron transfer, decreasing the reaction kinetics and the activity of CO2RR. The CO/H-2 ratio is related to the distribution of N species and the specific surface area, which are determined by the degree of spatial confinement effect. The CO/H2 ratios can be regulated by adjusting the carbonization temperature to adjust the degree of spatial confinement effect. Given the low cost of feedstock and easy strategy, 1D/3D NPC catalysts have great potential for industrial application.

关键词： electrochemical CO2 reduction reaction melamine sponge metal-organic frameworks porous carbon syngas NITROGEN CATALYST DEFECT ELECTROREDUCTION GRAPHENE

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Facile preparation of Fe/N-based biomass porous carbon composite towards enhancing the thermal decomposition of DAP-4

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Defence Technology（防务技术） 2024年第1期31卷 288-294页

作者： Er-hai An Xiao-xia Li Cun-juan Yu Ying-xin Tan Zi-jun Fan Qing-xia Li Peng Deng Xiong Cao School of Environment and Safety Engineering North University of ChinaTaiyuan030051PR China College of Safety and Emergency Management Engineering Taiyuan University of Science and TechnologyTaiyuan030024PR China

Fe/N-based biomass porous carbon composite(Fe/N-p carbon) was prepared by a facile high-temperature carbonization method from biomass,and the effect of Fe/N-p carbon on the thermal decomposition of energetic molecular perovskite-based material DAP-4 was *** porous carbonaceous materials was considered as the micro/nano support layers for in situ deposition of Fe/N ***/Np carbon was prepared simply by the high-temperature carbonization *** was found that it showed the inherent catalysis properties for thermal decomposition of *** heat release of DAP-4/Fe/N-p carbon by DSC curves tested had increased slightly,compared from DAP-4/Fe/N-p *** decomposition temperature peak of DAP-4 at the presence of Fe/N-p carbon had reduced by 79°C from384.4°C(pure DAP-4) to 305.4°C(DAP-4/Fe/N-p carbon-3).The apparent activation energy of DAP-4thermal decomposition also had decreased by 29.1 J/*** possible catalytic decomposition mechanism of DAP-4 with Fe/N-p carbon was proposed.

关键词： Biomass materials porous carbon DAP-4 Thermal decomposition Facile method

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Recent Advances in Biomass-derived porous carbon Materials:Synthesis,Composition and Applications

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Chemical Research in Chinese Universities 2024年第1期40卷 3-19页

作者： ZHAI Ziqi LU Yumiao LIU Guangyong DING Wei-Lu CAO Bobo HE Hongyan CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial TechnologyZhengzhou 450000P.R.China

porous carbon materials(PCMs)play a pivotal role in diverse applications,such as energy storage,adsorption,catalysis,environmental remediation,and microwave *** selection of carbon precursors,in particular,is crucial for tailoring porous structures with specific ***,with its rich carbon feedstock,abundant availability,renewability,and versatile structures,has emerged as a promising precursor for porous carbon material *** review comprehensively summarizes the recent advances in biomass-derived porous carbon materials(BPCMs)encompassing synthetic strategy,morphology,structural composition,and multiple *** first review synthetic approaches aiming at regulating porosity,followed by morphological and composition features of BPCMs,with a special emphasis on elucidating the dimensional clarification and heteroatom doping *** discussion then extends to the wide-ranging applications of BPCMs,covering energy-related applications and CO_(2) adsorption to environmental ***,the review outlines the existing challenges and prospects in the *** summary,this review systematically describes BPCMs and provides valuable guidance for researchers to select and synthesize BPCMs that meet specific functional requirements.

关键词： Biomass porous carbon Pyrolysis Heteroatom-doping Supercapacitor CO_(2)adsorption

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Facile synthesis of accordion-like porous carbon from waste PET bottles-based MIL-53(Al) and its application for high-performance Zn-ion capacitor

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Green Energy & Environment 2024年第7期9卷 1138-1150页

作者： Jiaxin Li Shuai Zhang Yumeng Hua Yichao Lin Xin Wen Ewa Mijowska Tao Tang Xuecheng Chen Rodney S.Ruoff Faculty of Chemical Technology and Engineering West Pomeranian University of Technology Key State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Safety Engineering China University of Mining and Technology Institute of Advanced Electrical Materials Qingdao University of Science and Technology Institute for Basic Science Center for Multiple Dimensional carbon Materials Department of Chemistry Ulsan National Institute of Science and Technology (UNIST) Department of Materials Science and Engineering Ulsan National Institute of Science and Technology (UNIST) School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST)

It is of great scientific and economic value to recycle waste poly（ethylene terephthalate）(PET) into high-value PET-based metal organic frameworks（MOFs） and further convert it into porous carbon for green energy storage applications. In the present study, a facile and costeffective hydrothermal process was developed to direct recycle waste PET bottles into MIL-53（Al） with a 100% conversation, then the MOFderived porous carbon was assembled into electrodes for high-performance supercapacitors. The results indicated that the as-synthesized carbon exhibited high SSA of 1712 m2g-1and unique accordion-like structure with hierarchical porosity. Benefit to these advantageous characters, the assembled three-electrode supercapacitor displayed high specific capacitances of 391 F g-1at the current density of 0.5 A g-1and good rate capability of 73.6% capacitance retention at 20 A g-1in 6 mol L-1KOH electrolyte. Furthermore, the assembled zinc ion capacitor still revealed outstanding capacitance of 335 F g-1at 0.1 A g-1, excellent cycling stability of 92.2% capacitance retention after 10 000 cycles and ultra-high energy density of 150.3 Wh kg-1at power density of 90 W kg-1in 3 mol L-1ZnSO4electrolyte. It is believed that the current work provides a facile and effective strategy to recycle PET waste into high-valuable MOF, and further expands the applications of MOF-derived carbons for high-performance energy storage devices, so it is conducive to both pollution alleviation and sustainable economic development.

关键词： PET Recycling porous carbon Supercapacitor Energy storage

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Preparation and Electrochemical Performance Study of Catalytic Cracking Oil Slurry-based porous carbon Materials

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 34-45页

作者： Liu Qi Zhao Gaiju Liu Xingge Yu Hewei Sun Rongfeng Geng Wenguang School of Energy and Power Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China Energy Research Institute Qilu University of Technology(Shandong Academy of Sciences)Jinan250014China

Catalytic cracking oil slurry is a by-product of catalytic cracking projects,and the efficient conversion and sustainable utilization of this material are issues of continuous concern in the petroleum refining *** this study,oxygen-enriched activated carbon is prepared using a one-step KOH activation method with catalytic cracking oil slurry as the raw *** as-prepared oil slurry-based activated carbon exhibits a high specific surface area of 2102 m^(2)/g,welldefined micropores with an average diameter of 2 nm,and a rich oxygen doping content of 32.97%.The electrochemical performance of the nitrogen-doped porous carbon is tested in a three-electrode system using a 6 mol/L KOH solution as the *** achieves a specific capacitance of up to 230 F/g at a current density of 1 A/***,the capacitance retention rate exceeds 89%after 10000 charge and discharge cycles,demonstrating excellent cycle *** method not only improves the utilization efficiency of industrial fuel waste but also reduces the production cost of supercapacitor electrode materials,thereby providing a simple and effective strategy for the resource utilization of catalytic cracking oil slurries.

关键词： catalytic cracking slurry porous carbon supercapacitor KOH activation

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porous carbon Derived from Poplar Catkins and Its High-performance CO_(2)Capture

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Journal of Wuhan University of Technology(Materials Science) 2023年第4期38卷 789-795页

作者：李重阳 TIAN Shujian 宋小勇 ZOU Bing 陈志权 ZHANG Zhen College of Energy and Power Engineering North China University of Water Resources and Electric PowerZhengzhou450045China Department of Oncology The Second Affiliated Hospital of Nanchang UniversityNanchang360000China School of Physical Science and Technology Wuhan UniversityWuhan430072China

In order to deal with the increasingly serious environmental problems,it is important and necessary to lower the concentration of greenhouse gases,especially the CO_(2)***_(2)capture and storage are the relative suitable options for the reduction of these harmful gas *** the variation of mass ratio of KOH to bio-char,the as prepared active carbon PC-4 exhibits a higher specific surface area of 2491.57 cm^(3)·g^(−1),with the ultra-micropores of 0.5 and 1.2 *** 298 K/1 bar,the CO_(2)adsorption capacity of PC-4 also represents the highest value of 5.81 mmol/*** work demonstrates that the both the pore size and the specific surface area are equally important to enhance the CO_(2)*** work provides a sustainable method to develop high efficiency waste-based adsorbents to deal with environmental issues of CO_(2)gas.

关键词： porous carbon biomass microporous CO_(2)adsorption

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porous carbon framework nested nickel foam as freestanding host for high energy lithium sulfur batteries

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Chinese Chemical Letters 2021年第3期32卷 1106-1110页

作者： Yan Song Xiuyuan Li Chaozheng He Shaanxi Key Laboratory of Optoelectronic Functional Materials and Devices School of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’an 710021China Institute of Environmental and Energy Catalysis School of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an 710021China

Constructing 3 D multifunctional conductive framework as stable sulfur cathode contributes to develop advanced lithium-sulfur(Li-S)***,a freestanding electrode with nickel foam framework and nitrogen doped porous carbon(PC)network is presented to encapsulate active sulfur for Li-S *** such a mutually embedded architecture with high stability,the interconnected carbon network and nickel foam matrix can expedite ionic/electro nic tra nsport and sustain volume variations of ***,rationally designed porous structures provide sufficient internal space and large surface area for high active sulfur loading and polar polysulfides *** from the synergistic superiority,the Ni/PC-S cathode exhibits a high initial capacity of around 1200 mAh/g at 0.2 C,excelle nt rate perfo rmance,and high cycling stability with a low decay rate of 0.059%per cycle after 500 *** work provides a useful strategy to exploit freestanding porous framework for diverse applications.

关键词： porous carbon Nitrogen doping Polysulfides anchoring Freestanding electrode Lithium-sulfur batteries

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Paper-derived cobalt and nitrogen co-doped carbon nanotube@porous carbon as a nonprecious metal electrocatalyst for the oxygen reduction reaction

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Chinese Journal of Catalysis 2018年第4期39卷 790-799页

作者： Gaopeng Liu Bin Wang Li Xu Penghui Ding Pengfei Zhang Jiexiang Xia Huaming Li Junchao Qian School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013JiangsuChina Chemical Sciences Division Oak Ridge National LaboratoryOak Ridge 37830USA School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Jiangsu Key Laboratory for Environment Functional Materials Suzhou University of Science and TechnologySuzhou 215009JiangsuChina

The oxygen reduction reaction(ORR)is a vitally important process in fuel *** development of high‐performance and low‐cost ORR electrocatalysts with outstanding stability is essential for the commercialization of the electrochemical energy ***,we report a facile synthesis of cobalt(Co)and nitrogen(N)co‐doped carbon nanotube@porous carbon(Co/N/CNT@PC‐800)electrocatalyst through a one‐step pyrolysis of waste paper,dicyandiamide,and cobalt(II)*** surface of the hierarchical porous carbon supported a large number of carbon nanotubes(CNTs),which were derived from dicyandiamide through the catalysis of *** addition of Co resulted in the formation of a hierarchical micro/mesoporous structure,which was beneficial for the exposure of active sites and rapid transportation of ORR‐relevant species(O2,H+,OH?,and H2O).The doped N and Co formed more active sites to enhance the ORR activity of the *** Co/N/CNT@PC‐800 material exhibited optimal ORR performance with an onset potential of 0.005 V ***/AgCl and a half‐wave potential of?0.173 V ***/***,the electrocatalyst showed an excellent methanol tolerance and a long‐term operational durability than that of Pt/C,as well as a quasi‐four‐electron reaction *** low‐cost and simple synthesis approach makes the Co/N/CNT@PC‐800 a prospective electrocatalyst for the ***,this work provides an alternative approach for exploring the use of biomass‐derived electrocatalysts for renewable energy applications.

关键词： Oxygen reduction reaction Waste paper Biomass porous carbon Cobalt

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Microzone-explosion synthesis of porous carbon electrodes for advanced aqueous solid-state supercapacitors with a high-voltage gel electrolyte

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Journal of Energy Chemistry 2021年第9期30卷 95-103页

作者： Yongxu Du Wei Liu Yongpeng Cui Hongguang Fan Yuan Zhang Tianqi Wang Huanlei Wang Yongcheng Jin Shuang Liu Wenting Feng Ming Chen School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina

A new microzone-combustion synthesis is proposed for preparing S, N-doped hierarchically porous carbons(CAC-CN) with a novel mixed microstructure of sp~2 short-range order area and sp~3 defective area,achieving a coexistence of high conductivity and high capacitance as well as good access for *** engineering ‘‘water in salts" into a polymer matrix, a high-voltage(2.5 V) aqueous gel electrolyte(HGWIS) is prepared and used to construct an aqueous solid-state SCs by in situ polymerization between the electrodes. The good match of CAC-CN electrode and HG-WIS electrolyte endows the assembled devices with superior high energy density and excellent capacitance retention, also a good temperature robustness, as well a high flexibility in 0-180° bending cycles. This study indicates that the collaborative design strategy of electrode materials and electrolyte would be great potential in exploring advanced aqueous solid-state SCs.

关键词： porous carbon S N-doping Microzone-explosion Gel electrolyte Supercapacitor

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Natural nori-based porous carbon composite for sustainable lithium-sulfur batteries

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Science China(Technological Sciences) 2022年第10期65卷 2380-2387页

作者： LIU Hu LIU WeiLin MENG FanCheng JIN LiangYu LI ShuLin CHENG Sheng JIANG ShuDong ZHOU RuLong LIU JieHua School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China Instrumental Analysis Centre Hefei University of TechnologyHefei 230009China College of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China

The practical applications of lithium-sulfur(Li-S)batteries are limited by the low conductivity of sulfur and the shuttle effect of soluble polysulfides during the charge-discharge *** the same time,biomass-based carbon materials have been acknowledged as the cost-effective and direct settlement to mitigate or overcome these problems due to their renewability,facile processing,and pollution-free ***,in this work,we report the natural nori-based CoO nanoparticles decorated hierarchical porous carbon(HPC)for high-capacity Li-S battery *** HPC with an extremely high surface area of 2089 m^(2)g^(−1)provides a good substrate for the accommodation of CoO nanoparticles,which can effectively seize the lithium polysulfides and facilitate their redox *** a result,the CoO-HPC/S cathode exhibits a high discharge capacity of 1557.1 mA h g^(−1),as well as excellent rate performance and cycling *** to the naturally abundant nori-based cathode materials,the resultant Li-S battery is supposed to be an attractive and sustainable energy storage device.

关键词： biomass sustainable porous carbon cathode Li-S battery

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