检索结果-南通市图书馆

Journal of Energy Chemistry 2017年第6期26卷 1181-1186页

作者： Haihua Wu Xiaole Jiang Yifan Ye Chengcheng Yan Songhai Xie Shu Miao Guoxiong Wang Xinhe Bao State Key Laboratory of Catalysis CAS Center for Excellence in NanoscienceDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences No.19(A)Yuquan RoadShijingshan DistrictBeijing 100049China Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghai 200433China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Nitrogen-doped carbon materials encapsulating 3 d transition metals are promising alternatives to replace noble metal Pt catalysts for efficiently catalyzing the oxygen reduction reaction(ORR). Herein, we use cobalt substituted perfluorosulfonic acid/polytetrafluoroethylene copolymer and dicyandiamide as the pyrolysis precursor to synthesize nitrogen-doped carbon nanotube(N–CNT) encapsulating cobalt nanoparticles hybrid material. The carbon layers and specific surface area of N–CNT have a critical role to the ORR performance due to the exposed active sites, determined by the mass ratio of the two precursors. The optimum hybrid material exhibits high ORR activity and stability, as well as excellent performance and durability in zinc–air battery.

关键词： Nitrogen-doped carbon nanotube Perfluorosulfonic Acid/polytetrafluoroethylene copolymer Cobalt substitution Oxygen reduction reaction zinc–air battery

Co_(2)N Nanoparticles Anchored on N-Doped Active Carbon as Catalyst for Oxygen Reduction Reaction in zinc–air battery

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2022年第3期5卷 935-943页

作者： Xianli Wu Guosheng Han Hao Wen Yanyan Liu Lei Han Xingyu Cui Jiajing Kou Baojun Li Jianchun Jiang Research Center of Green Catalysis College of ChemistryZhengzhou University100 Science RoadZhengzhou 450001China National Engineering Laboratory for Biomass Chemical Utilization Institute of Chemical Industry of Forest ProductsChinese Academy of ForestryNanjing 210042China College of Science Henan Agricultural UniversityZhengzhou 450002China Davidson School of Chemical Engineering Purdue University480 Stadium Mall DriveIN 47906United States State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University28 Xianning West RoadXi'an 710049China

The development of efficient catalytic electrode toward oxygen reduction reaction(ORR)is still a great challenge for the wide use of zinc–air ***,Co_(2)N nanoparticles(NPs)anchored on N-doped carbon from cattail were verified with excellent catalytic performances for *** onset and half-wave potentials over the optimal catalyst reach to 0.96 V and 0.84 V,*** retention rates of 96.8%after 22-h test and 98.8%after running 1600 s were obtained in 1 M methanol *** functional theory simulation proposes an apparently increased electronic states of Co_(2)N in N-doped carbon layer close to the Fermi *** charge density,favorable adsorption,and charge transfer of intermediates originate from the coexistence of Co_(2)N NPs and N atoms in carbon *** superior catalytic activity of composites also was confirmed in zinc–air *** novel catalytic property and controllable preparation approach of Co_(2)Ncarbon composites provide a promising avenue to fabricate metal-containing catalytically active carbon from biomass.

关键词： catalytically active carbon Co2N nanoparticles N-doping oxygen reduction reaction zinc–air battery

Dynamic stretching–electroplating metal-coated textile for a flexible and stretchable zinc–air battery

在线全文

学校读者我要写书评

暂无评论

Carbon Energy 2022年第5期4卷 867-877页

作者： Shengxiang Qu Jie Liu Xiaopeng Han Yida Deng Cheng Zhong Wenbin Hu Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjinChina Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjinChina Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhouFujianChina

A metal electrode is a significant component of a zinc–air battery(ZAB),but the metal material is usually not elastic,which severely restricts the application of flexible and stretchable ZABs in the field of wearable electronic ***,we report a flexible and stretchable metal-coated textile prepared by a dynamic stretching–electroplating based on a wavy spandex textile *** from the unique woven and wavy structure,the metal-coated textile shows a high stretchability of 100%and stable *** situ scanning electron microscope observation during stretching showed that the tensile strain of the metal-coated textile is mainly attributed to the deformation of the microfiber network at the bottom position of the wave *** addition,a sodium carboxymethyl cellulose–polyacrylic acid–potassium hydroxide composite hydrogel has been used as the *** hydrogel shows excellent ionic conductivity,mechanical properties,and water retention properties,which makes it suitable for the semi-open system of ***,a flexible and stretchable sandwich-structure ZAB,assembled using the above-mentioned electrodes and electrolyte,operates stably even under rapid stretching/releasing cycle *** of its facile preparation and low cost,this flexible and stretchable ZAB is suitable for fabrication of large-area batteries to obtain higher output current and power to drive wearable electronic devices.

关键词： dynamic stretching–electroplating hydrogel electrolyte metal-coated textile prestrain–load–recovery zinc–air battery

Boosting electrocatalytic activity with the formation of abundant heterointerfaces and N, S dual-doped carbon nanotube for rechargeable Zn-air battery

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

Journal of Energy Chemistry 2023年第9期84卷 140-152页

作者： Rin Na Kyeongseok Min Hyejin Kim Yujin Son Sang Eun Shim Sung-Hyeon Baeck Department of Chemistry and Chemical Engineering Education and Research Center for Smart Energy Materials and ProcessInha UniversityIncheon 22212Republic of Korea

Herein,a facile synthetic strategy is proposed to fabricate high-performance electrocatalysts for rechargeable Zn-air batteries(ZABs).Heterostructured NiCo/NiCo_(2)S_(4) nanoparticles encapsulated in N-,S-co-doped CNT(NiCo/NiCo_(2)S_(4)@NSCNT) are synthesized via co-precipitation,thermal carbonization,and partial sulfidation *** strongly coupled NiCo/NiCo_(2)S_(4) heterostructure can improve the redox property and charge transfer ***,the CNTs with abundant foreign dopants provide high electrical conductivity and abundant defect sites for both the oxygen evolution reaction(OER) and oxygen reduction reaction(ORR).The prepared NiCo/NiCo_(2)S_(4)@NSCNT electrocatalyst exhibits a low overpotential of 349 mV at a current density of 10 mA cm-2 and a half-wave potential of 0.865 V for the OER and ORR,***,the ZAB assembled using as-prepared NiCo/NiCo_(2)S_(4)@NSCNT can provide superior specific capacity(756.16 mA h g_(Zn)^(-1)],peak power density(155.82 mW cm^(-2)),and long-term cyclability compared to those of the precious metal-based electrocatalyst(Pt/C+RuO_(2)).

关键词： Bifunctional electrocatalyst NiCo alloy Bimetallic sulfide Heterojunction zinc–air battery

Hierarchical Carbon Microtube@Nanotube Core-Shell Structure for High-Performance Oxygen Electrocatalysis and Zn-air battery

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2020年第8期12卷 46-59页

作者： Wenfu Xie Jianming Li Yuke Song Shijin Li Jianbo Li Mingfei Shao State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China Petroleum Geology Research and Laboratory Center Research Institute of Petroleum Exploration and Development(RIPED)PetroChinaBeijing 100083People’s Republic of China

zinc-air batteries(ZABs)hold tremendous promise for clean and efficient energy storage with the merits of high theoretical energy density and environmental ***,the performance of practical ZABs is still unsatisfactory because of the inevitably decreased activity of electrocatalysts when assembly into a thick electrode with high mass ***,we report a hierarchical electrocatalyst based on carbon microtube@nanotube core-shell nanostructure(CMT@CNT),which demonstrates superior electrocatalytic activity for oxygen reduction reaction and oxygen evolution reaction with a small potential gap of 0.678 ***,when being employed as air-cathode in ZAB,the CMT@CNT presents an excellent performance with a high power density(160.6 mW cm^−2),specific capacity(781.7 mAhgZn^−1)as well as long cycle stability(117 h,351 cycles).Moreover,the ZAB performance of CMT@CNT is maintained well even under high mass loading(3 mg cm−2,three times as much as traditional usage),which could afford high power density and energy density for advanced electronic *** believe that this work is promising for the rational design of hierarchical structured electrocatalysts for advanced metal-air batteries.

关键词： Hierarchical structure Carbon microtube@nanotube Core–shell zinc–air battery

Neuron-inspired design of hierarchically porous carbon networks embedded with single-iron sites for efficient oxygen reduction

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2022年第7期65卷 1445-1452页

作者： Yanwei Zhu Xuxu Wang Jianqiao Shi Lang Gan Binbin Huang Li Tao Shuangyin Wang State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha 410082China College of Environmental science and Engineering Hunan UniversityChangsha 410082China

The rational structure design and active-site regulation of catalysts is crucial for high energy output. Herein, B, F co-doped Fe–N–C embedded in a flexible and free-standing hierarchical porous carbon framework(Fe–SA–FPCS) was reported. Owing to the synergism of optimized intrinsic activity, fast mass transfer and well exposed active sites, the Fe–SA–FPCS exhibits a high halfwave potential(E1/2=0.89 V vs. RHE) and small Tafel slope(66 m V dec^(-1)). Theoretical calculations uncover that B, F co-doping could accelerate the desorption of OH* on Fe sites, which can effectively increase oxygen reduction reaction activity. As the cathode for Zn–air batteries(ZABs), Fe–SA–FPCS demonstrates a high open-circuit voltage(1.51 V), large peak power density(168.4 m W cm^(-2)) and excellent stability. The assembled flexible solid-state ZAB exhibits excellent stability during charge and discharge cycling in the flat/bent state, and is promising for the application of portable and flexible devices. This work provides a new perspective for the fabrication of single-atom electrocatalysts with well-designed structure and excellent electrochemical energy conversion and storage capability.

关键词： Electrospinning single-atom catalysts oxygen reduction reaction hierarchical porous structure zinc–air battery

Lamellar-stacked cobalt-based nanopiles integrated with nitrogen/sulfur co-doped graphene as a bifunctional electrocatalyst for ultralong-term zinc-air batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第6期81卷 633-641,I0014页

作者： Lingxue Meng Wenwei Liu Yang Lu Zhenyi Liang Ting He Jinying Li Haoxiong Nan Shengxu Luo Jia Yu School of Science Hainan UniversityHaikou 570228HainanChina Materials Genome Institute Shanghai UniversityShanghai 200444China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Department of Chemistry College of SciencesShanghai UniversityShanghai 200444China

Sluggish oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)kinetics inevitably impede the practical performance of rechargeable zinc-air ***,combing the structural designability of transition metal-based electrocatalysts with anionic regulation is highly ***,mesoporous lamellar-stacked cobalt-based nanopiles with surface-sulfurization modification are elaborately designed and integrated with N/S co-doped graphene to build a robust OER/ORR bifunctional *** lamellar-stacking mode of mesoporous nanosheets with abundant channels accelerates gas-liquid mass transfer,and partial-sulfurization of cobalt-based matrix surface efficiently improves the intrinsic OER ***,N/S co-doped graphene further reinforces the ORR active sites while providing a stable conductive *** expected,this composite electrocatalyst delivers considerable bifunctional activity and stability,with an OER overpotential of 323 m V at 10 m A cm^(-2)and high *** applied in zinc-air batteries,remarkable ultralong-term stability over 4000 cycles and a maximum power density of 150.1 m W cm^(-2)are *** work provides new insight into structurecomposition synergistic design of rapid-kinetics OER/ORR bifunctional electrocatalyst for nextgeneration metal-air batteries.

关键词： Lamellar-stacking nanopile Co_(3)O_(4) Anionic regulation Oxygen evolution reaction Oxygen reduction reaction zinc–air battery