检索结果-南通市图书馆

Oxygen vacancies enriched Ir/WOx catalysts for the directly chem-catalytic conversion of cellulose to ethanol

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

Tungsten 2025年第1期7卷 88-99页

作者： Yu-Jing Weng Zhao-Ying Ding Ying-Chao Li Yuan-Feng Wu Yuan-Yang Xu Rui Chen Xiao-Lei Zhao Hai-Yong Wang Da-Lei Zhang Yu-Long Zhang Henan Key laboratory of Coal Green Conversion and International Joint Laboratory of Coal Clean Utilization College of Chemistry and Chemical Engineering Henan Polytechnic University Key laboratory of renewable energy Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Liaoning Institute of energy Technology

Tungsten and its oxides are highly versatile catalysts with unique properties that hold great promise for a wide array of applications,including biological pathways and chemical *** chemo-catalysis of cellulose to ethanol presents a promising avenue for ethanol synthesis with the potential for enhanced efficiency compared to conventional methods,offering a sustainable and carbon-neutral alternative to existing petrochemical and biological ***,Ir/WOxcatalysts enriched with oxygen vacancies were meticulously prepared and demonstrated remarkable catalytic performance in converting cellulose to ethanol directly in the presence of tungstic *** catalyst achieved a high ethanol yield of 66.5%under optimal reaction conditions,approaching the theoretical yield limit of traditional ethanol *** results revealed the presence of oxygen defects,Bronsted/Lewis acidity,and Ir nanoclusters on the catalyst surface,working synergistically to facilitate the cascade catalysis of cellulose hydrolysis,sugar retro-aldol condensation reaction,and C2 intermediate hydrodeoxygenation to *** situ Fourier transform infrared spectrometer analysis confirmed the catalyst's ability to enhance the adsorption and activation of ethylene glycol for ethanol *** manipulating subtle structural features,this study offers a fresh perspective on tungsten group catalyst design and underscores the importance of synergistic effects among catalytic sites for the efficient production of ethanol from cellulose.

关键词： Cellulosic ethanol Chem-catalysis Hydrogenolysis Retro-aldol condensation Tungsten

Sulfur atom occupying surface oxygen vacancy to boost the charge transfer and stability for aqueous Bi2O3 electrode

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2025年第2期101卷 751-759页

作者： Guangmin Yang Jianyan Lin Guanwu Li Tian Li Dong Wang Weitao Zheng College of Physics Changchun Normal University School of materials Science and Engineering Northwestern Polytechnical University Key laboratory of Automobile materials of MOE School of Materials Science and Engineering and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Jilin University

Oxygen vacancies（Ov） within metal oxide electrodes can enhance mass/charge transfer dynamics in energy storage ***,construction of surface Ovoften leads to instability in electrode structure and irreversible electrochemical reactions,posing a significant *** overcome these challenges,atomic heterostructures are employed to address the structural instability and enhance the mass/charge transfer dynamics associated with phase conversion mechanism in aqueous electrodes,Herein,we introduce an atomic S-Bi2O3heterostructure(sulfur（S） anchoring on the surface Ovof Bi2O3).The integration of S within Bi2O3lattice matrix triggers a charge imbala nce at the heterointerfaces,ultimately resulting in the creation of a built-in electric field（BEF）.Thus,the BEF attracts OH-ions to be adsorbed onto Bi within the regions of high electron cloud overlap in S-Bi2O3,facilitating highly efficient charge ***,the anchored S plays a pivotal role in preserving structural integrity,thus effectively stabilizing the phase conversion reaction of *** a result,the S-Bi2O3electrode achieves72.3 mA h g-1at 10 A g-1as well as high-capacity retention of 81.9% after 1600 *** innovative SBi2O3design presents a groundbreaking approach for fabricating electrodes that exhibit efficient and stable mass and charge transfer ***,it enhances our understanding of the underlying reaction mechanism within energy storage electrodes.

关键词： Anchoring effect Atomic heterostructure Charge/mass transfer Oxygen vavancy Structural integrity

Co-production of hydrogen, oxygen, and electricity via an integrated solar-driven system with decoupled water electrolyzer and Na-Zn ion battery

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2025年第1期100卷 621-627页

作者： Fei Lv Longjie Liu Jiazhe Wu Pengfei Wang Lixia Pan Dengwei Jing Yubin Chen International Research Center for renewable energy State Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong UniversityXi’an 710049ShaanxiChina

Combining water electrolysis and rechargeable battery technologies into a single system holds great promise for the co-production of hydrogen (H_(2)) and ***,the design and development of such systems is still in its ***,an integrated hydrogen-oxygen (O_(2))-electricity co-production system featuring a bipolar membrane-assisted decoupled electrolyzer and a Na-Zn ion battery was established with sodium nickelhexacyanoferrate (NaNiHCF) and Zn^(2+)/Zn as dual redox *** decoupled electrolyzer enables to produce H_(2)and O_(2)in different time and space with almost 100%Faradaic efficiency at 100 mA cm^(-2).Then,the charged NaNiHCF and Zn electrodes after the electrolysis processes formed a Na-Zn ion battery,which can generate electricity with an average cell voltage of 1.75 V at 10 m A cm^(-2).By connecting Si photovoltaics with the modular electrochemical device,a well-matched solar driven system was built to convert the intermittent solar energy into hydrogen and electric energy with a solar to hydrogen-electricity efficiency of 16.7%,demonstrating the flexible storage and conversion of renewables.

关键词： Hydrogen Electricity Decoupled water electrolyzer Na-Zn ion battery Solar energy

维普期刊数据库

Building Li-S batteries with enhanced temperature adaptability via a redox-active COF-based barrier-trapping electrocatalyst

在线全文

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2025年第2期101卷 702-712页

作者： Jie Xu Acheng Zhu Zhangyu Zheng Yiming Qi Yuwen Cheng Yongjie Cao Bo Peng Lianbo Ma Yonggang Wang School of materials Science and Engineering Key Laboratory of Efficient Conversion and Solid-state Storage of Hydrogen & Electricity of Anhui Province Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of Education Anhui University of Technology Department of Chemistry and Shanghai Key laboratory of Molecular Catalysis and Innovative materials Institute of New Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Fudan University

Covalent organic frameworks（COFs） are promising materials for mitigating polysulfide shuttling in lithium-sulfur（Li-S） batteries,but enhancing their ability to convert polysulfides across a wide temperature range remains a challenge,Herein,we introduce a redox-active COF（RaCOF） that functions as both a physical barrier and a kinetic enhancer to improve the temperature adaptability of Li-S batteries,The RaCOF constructed from redox-active anthraquinone units accelerates polysulfide conversion kinetics through reversible C=O/C-OLi transformations within a voltage range of 1,7 to 2.8 V（***+/Li）,optimizing sulfur redox reactions in ether-based *** conventional COFs,RaCOF provides bidentate trapping of polysulfides,increasing binding energy and facilitating more effective polysulfide ***-situ XRD and ToF-SIMS analyses confirm that RaCOF enhances polysulfide adsorption and promotes the transformation of lithium sulfide（Li2S）,leading to better sulfur cathode ***,RaCOF-modified Li-S batteries demonstrate low self-discharge（4.0% decay over a 7-day rest）,excellent wide-temperature performance（stable from-10 to+60℃）,and high-rate cycling stability（94% capacity retention over 500 cycles at 5.0 C）.This work offers valuable insights for designing COF structures aimed at achieving temperature-adaptive performance in rechargeable batteries.

关键词： Covalent organic framework Lithium-sulfur batteries Redox-active property Wide-temperature adaptability

Tailoring Cathode-Electrolyte Interface for High-Power and Stable Lithium-Sulfur Batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第4期17卷 181-211页

作者： Mengting Liu Ling-Jiao Hu Zhao-Kun Guan Tian-Ling Chen Xin-Yu Zhang Shuai Sun Ruoli Shi Panpan Jing Peng-Fei Wang Center of Nanomaterials for renewable energy State Key Laboratory of Electrical Insulation and Power EquipmentSchool of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049People’s Republic of China Low-Dimensional materials and Photo/Electrochemical Technology Lab School of Materials Science and EngineeringShaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021People’s Republic of China

Global interest in lithium-sulfur batteries as one of the most promising energy storage technologies has been sparked by their low sulfur cathode cost,high gravimetric,volumetric energy densities,abundant resources,and environmental ***,their practical application is significantly impeded by several serious issues that arise at the cathode-electrolyte interface,such as interface structure degradation including the uneven deposition of Li_(2)S,unstable cathode-electrolyte interphase(CEI)layer and intermediate polysulfide shuttle ***,an optimized cathode-electrolyte interface along with optimized electrodes is required for overall ***,we comprehensively outline the challenges and corresponding strategies,including electrolyte optimization to create a dense CEI layer,regulating the Li_(2)S deposition pattern,and inhibiting the shuttle effect with regard to the solid-liquid-solid pathway,the transformation from solid-liquid-solid to solid-solid pathway,and solid-solid pathway at the cathode-electrolyte *** order to spur more perceptive research and hasten the widespread use of lithium-sulfur batteries,viewpoints on designing a stable interface with a deep comprehension are also put forth.

关键词： Lithium-sulfur batteries Shuttle effect Cathode-electrolyte interface Structural enhancement Reaction pathway

维普期刊数据库

A seaweed-inspired separator for high performance Zn metal batteries:Boosting kinetics and confining side-reactions

在线全文

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2025年第2期101卷 191-200页

作者： Qianzhi Gou Horan Luo Long Qu Feilin Yu Kaixin Wang Sida Zhang Ziga Luogu Ben Zhang Yujie Zheng Bingye Song John Wang Meng Li National Innovation Center for Industry-Education Integration of energy Storage MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCQU-NUS Renewable Energy Materials & Devices Joint Laboratory College of Energy & Power Engineering Chongqing University School of Building Services Science and Engineering Xi'an University of Architecture and Technology School of Chemistry and Chemical Engineering Chongqing University of Science and Technology Southwest Technology and Engineering Research Institute National University of Singapore (Chongqing) Research Institute

Uncontrolled dendrite growth,sluggish reaction kinetics,and drastic side reactions on the anodeelectrolyte interface are the main obstacles that restrict the application prospect of aqueous zinc-ion *** glass fiber（GF） separator with chemical inertness is almost ineffective in restricting these ***,inspired by the ionic enrichment behavior of seaweed plants,a facile biomass species,anionic sodium alginate（SA）,is purposely decorated on the commercial GF separator to tackle these issues towards Zn *** from the abundant zincophilic functional groups and superior mechanical strength properties,the as-obtained SA@GF separator could act as ion pump to boost the Zn2+transference number（0.68）,reduce the de-solvation energy barrier of hydrated Zn2+,and eliminate the undesired concentration polarization effect,which are verified by experimental tests,theoretical calculations,and finite element simulation,*** on these efficient modulation mechanisms,the SA@GF separator can synchronously achieve well-aligned Zn deposition and the suppression of parasitic ***,the Zn‖Zn coin cell integrated with SA@GF separator could yield a prolonged calendar lifespan over 1230 h(1 mA cm-2and 1 mAh cm-2),exhibiting favorable competitiveness with previously reported separator modification ***,the Zn-MnO2full and pouch cell assembled with the SA@GF separator also delivered superior cycling stability and rate performance,further verifying its practical application *** work provides a new design philosophy to stabilize the Zn anode from the aspect of separator.

关键词： Aqueous zinc-ion batteries Dendrite-free Interfacial reaction kinetics Separator modification Sodium alginate

Electro-functionalized 2D nitrogen-carbon nanosheets decorated with symbiotic cobalt single-atoms/clusters

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of energy Chemistry 2025年第2期101卷 385-391页

作者： Xinyan Zhou Sifan Qiao Zhenzhen Zhao Meiqi Liu Kexin Song Fuxi Liu Nailin Yue Xiujuan Li Meng Zou Wei Zhang Key laboratory of Automobile materials MOE and School of Materials Science & Engineering and Electron Microscopy Center and International Center of Future Science and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials Jilin University Key laboratory of Bionic Engineering Ministry of Education Jilin University

Two-dimensional（2D） materials loaded with single atoms and clusters are being set at the forefront of catalysis due to their distinctive geometric and electronic ***,the usually-complicated synthesis procedures impede in-depth clarification of their catalytic *** this end,herein we developed an efficient one-step dimension-reduction carbonization strategy,with which we successfully architected a highly-efficient catalyst for oxygen reduction reaction（ORR）,featured with symbiotic cobalt single atoms and clusters decorated in two-dimensional（2D） ultra-thin（3.5 nm thickness）nitrogen-carbon *** synergistic effects of the two components afford excellent oxygen reduction activity in alkaline media(E1/2=0.823 V ***) and thereof a high power density(146.61 mW cm-2) in an assembled Zn-air *** revealed by theoretical calculations,the cobalt clusters can regulate electrons surrounding those individual atoms and affect the adsorption of intermediate *** a consequence,the derived active sites of single cobalt atoms lead to a significant improvement of the ORR ***,our work may fuel interests to delicate architectu re of single atoms and clusters coexisting 2D support toward optimal electrocatalytic performance.

关键词： Carbon-Nitrogen Nanosheets Oxygen reduction reaction Single atoms and clusters Two-dimensional

Elucidating oxygen evolution and reduction mechanisms in nitrogen-doped carbon-based photocatalysts

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2025年第2期36卷 224-229页

作者： Yan Wang Jiaqi Zhang Xiaofeng Wu Sibo Wang Masakazu Anpo Yuanxing Fang State Key laboratory of Photocatalysis on energy and Environment College of Chemistry Fuzhou University Sino-UK International Joint laboratory on Photocatalysis for Clean energy and Advanced Chemicals & materials Fuzhou University Department of Chemistry and materials Innovation Factory University of Liverpool

Solar-induced water oxidation reaction（WOR） for oxygen evolution is a critical step in the transformation of Earth's atmosphere from a reducing to an oxidation one during its primordial stages. WOR is also associated with important reduction reactions, such as oxygen reduction reaction（ORR）, which leads to the production of hydrogen peroxide（H2O2）. These transitions are instrumental in the emergence and evolution of life. In this study, transition metals were loaded onto nitrogen-doped carbon（NDC） prepared under the primitive Earth's atmospheric conditions. These metal-loaded NDC samples were found to catalyze both WOR and ORR under light illumination. The chemical pathways initiated by the pristine and metal-loaded NDC were investigated. This study provides valuable insights into potential mechanisms relevant to the early evolution of our planet.

关键词： Chemical vapor deposition Nitrogen-doped carbon Oxygen reduction reaction Photocatalysis Water oxidation reaction

Rationally constructing metallic Sn-ZnO heterostructure via in-situ Mn doping for high-rate Na-ion batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2025年第2期36卷 518-525页

作者： Bin Fenga Tao Long Ruotong Li Yuan-Li Ding College of materials Science and Engineering Hunan University College of materials and Chemical Engineering Key laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University

Developing a heterostructure for alloying-based anode for sodium-ion batteries（SIBs） is an efficient solution to accommodate volume change upon sodiation/desodiation and boost sodium storage since it combines the merits of each component. Herein, we report a metallic and microphone-like Sn-Zn0.9Mn0.1O heterostructure via an in-situ Mn doping strategy. Based on theoretical calculations and experimental results, the introduction of Mn into Zn O（a small amount of Mn also diffuses into the Sn lattice） can not only enhance intrinsic electronic conductivity but also reduce the Na+diffusion barrier inside the Sn phase. When evaluated as anode for SIBs, the obtained heterostructures show a high reversible capacity of 395.1 mAh/g at 0.1 A/g, rate capability of 332 mAh/g at 5 A/g, and capacity retention of almost 100%after 850 cycles at 5 A/g, indicating its great potential for high-power application of SIBs.

关键词： Heterostructures Mn-doping Sn anode Sn-Zn0.9Mn0.1O Sodium-ion battery