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Nickel-copper alloying arrays realizing efficient co-electrosynthesis of adipic acid and hydrogen

Journal of Energy Chemistry 2025年第2期101卷 7-15,I0001页

作者： Xuhui Ren Qianyu Zhang Yun Tong Guorong Zhou Cong Lin Yanying Zhao Pengzuo Chen School of Chemistry and Chemical Engineering Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina

Constructing electrocatalytic overall reaction technology to couple the electrosynthesis of adipic acid with energy-saving hydrogen production is of significant for sustainable energy ***,the development of highly-active bifunctional electrocatalysts remains a ***,3D hierarchical nickel-copper alloying arrays with dendritic morphology are manufactured by a simple electrodeposition process,standing for the excellent bifunctional electrocatalyst towards the co-production of adipic acid and H_(2)from cyclohexanone and *** membrane-free flow electrolyzer of Cu_(0.81)Ni_(0.19)/NF shows the superior electrooxidation performance of ketone-alcohol(KA)oil with high faradaic efficiencies of over 90%for adipic acid and H_(2),robust stability over 200 h as well as a high yield of 0.6 mmol h^(-1) for adipic acid at 100 mA cm^(-2).In-situ spectroscopy indicates the Cu_(0.81)Ni_(0.19)alloy contributes to forming more active NiOOH species to involve in the conversion of cyclohexanone to adipic acid,while the proposed reaction pathway undergoes the 2-hydroxycyclohexanone and 2,7-oxepanedione ***,the theoretical calculations confirm that the optimal electronic interaction,boosted reaction kinetics as well as improved adsorption free energy of reaction intermediates,synergistically endows Cu_(0.81)Ni_(0.19)alloy with superior bifunctional performance.

关键词： Cu_(0.81)Ni_(0.19)alloy Adipic acid Hydrogen fuel Cyclohexanone oxidation reaction Hydrogen evolution reaction

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Fabrication and characterization of ceramic WC10Co4Cr-YSZ composite coating via HVOF spraying core-shell powders

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Ceramics International 2025年第14期51卷 19058-19070页

作者： Li, Ming-Xi Wei, Wei Zhao, Yibo Li, Ming Huang, Haibo Chen, Zhe Xie, Xiao-Ming Liu, Xiu-Bo Hunan Agricultural Equipment Research Institute Changsha410125 China Hunan Institute of Agricultural Environment and Ecology Changsha410125 China Hunan Province Key Laboratory of Materials Surface/Interface Science & Technology Central South University of Forestry & Technology Changsha410004 China

Improving the fracture toughness of agricultural soil-engaging components can mitigate the detrimental effects of hard particles in the soil while maintaining the wear resistance of the components, thereby improving the service performance. The wear resistance of the parts can be improved by surface treatment, but the surface toughness after treatment still needs to be further improved. In this study, WC10Co4Cr@YSZ (Yttria Stabilized Zirconia) core-shell structured composite powder was synthesized by modifying commercial WC10Co4Cr powder using the sol-gel method, and WC10Co4Cr coatings were prepared using the powders before and after modification. The microstructure of the powder and coatings were characterized. The mechanical properties and wear resistance of the coatings were evaluated through microhardness, nanoindentation, and friction testing. The hardness of the YSZ-modified composite coating was comparable to that of the unmodified coating, yet it exhibited lower porosity and twice the fracture toughness. Wear test results indicated that the coating's wear loss was greatly reduced compared with the substrate. In addition, the wear rate of the YSZ-modified coating was 71.11 % lower than the unmodified coating, demonstrating its exceptional wear resistance. The findings show that incorporation of YSZ into the coating system further enhanced wear resistance. The strengthening mechanisms resulting from the YSZ inclusion include the pinning effect, which controls the size and distribution of the WC grains, the shell structure that prevents overheating, and the improved fracture toughness of the coating. This work provides a new way to extend the service time of agricultural soil-engaging components. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Fracture toughness

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Interfacial Zn^(2+)-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional MaterialsHunan Institute of Science and TechnologyYueyang 414006HunanChina School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South UniversityChangsha 410083HunanChina College of Materials and Metallurgy Guizhou UniversityGuiyang 550000GuizhouChina National Energy Metal Resources and New Materials Key Laboratory Central South UniversityChangsha 410083HunanChina

Aqueous zinc-ion batteries (AZIBs) are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc (Zn) deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn^(2+)-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups (such as hydroxyl,carboxyl,etc.) have the potential to significantly optimize the solvation structure of Zn^(2+)and regulate the interfacial electric double layer (EDL).By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn (H-Zn) anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH_(4)V_(4)O^(10)(NVO) full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A g^(-1).This study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Zn^(2+)-solvation structure Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082HunanChina Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou 511300GuangdongChina Changsha Research Institute of Mining&Metallurgy Co. LTD.Changsha 410017HunanChina

Hard carbon (HC) has been considered as promising anode material for sodium-ion batteries (SIBs).The optimization of hard carbon’s microstructure and solid electrolyte interface (SEI) property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy (FTIR/EIS) and X-ray photoelectron spectroscopy (XPS) analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： Hard carbon Sodium-ion batteries Boron doping Pore structure Electrode/electrolyte interphases

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Tuning surface reactivity towards high-performance hard carbon in Li/Na/K-ion batteries

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Journal of Energy Chemistry 2025年第4期103卷 27-36页

作者： Wang Zhou Dan Wang Ying Mo Rui Tang Peng Gao Miaomiao Han Shi Chen Keigo Wakabayashi Takeharu Yoshii Hirotomo Nishihara Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology of Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangsha 410082HunanChina The Key Laboratory of Micro-nano Energy Materials and Application Technologies University of Hunan Province&College of Physics and Electronic EngineeringHengyang Normal UniversityHengyang 421002HunanChina Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao 999078China Institute of Multidisciplinary Research for Advanced Materials Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku University2-1-1 KatahiraAoba-kuSendaiMiyagi 980-8577Japan

Controlling surface chemistry is critically important for improving the initial Coulombic efficiency(ICE)and adsorption capacity of hard carbon anode used in Li/Na/K-ion ***,accurately identifying the types and concentrations of hydrogen/oxygen terminated functional groups(HTFG/OTFGs)and distinguishing their functionalities remain ***,we quantitatively investigated the surface chemistry on hard carbon via ultra-high temperature programed desorption measurements,and uncovered the role of HTFG/OTFGs in influencing ICE and adsorption capacity in Li/Na/K-ions *** C-H group is found to be dominant species on the surface of hard carbon,and presents a positive correlation with ICE values and adsorption *** low reactivity of C-H group with both electrolyte salt and solvent results in the formation of thinner and highly conducive solid electrolyte interphase(SEI)layer,which benefit for the enhanced ICE and improved Li/Na/K-ions diffusion across SEI ***,the pimping trapping effect of C-H groups allows the adsorbed Li/Na/K-ions to migrate into graphitic interlayer quickly,enhancing the slope *** fabricating a C-H group-rich surface chemistry on hard carbon,a high ICE value and satisfactory specific capacity have been *** findings enrich our understanding of the surface chemistry-induced interfacial reaction,which effectively guides the rational design of high-performance hard carbon.

关键词： Hard carbon surface chemistry C–H bond Initial coulombic efficiency Adsorption capacity

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Heterogeneous β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl bifunctional electrocatalyst for superior concurrent conversion of glycerol and nitrite

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Journal of Energy Chemistry 2025年第5期104卷 185-193页

作者： Mingdan Wang Pengzuo Chen Huigang Wang Yanying Zhao School of Chemistry and Chemical Engineering Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang ProvinceZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231ZhejiangChina

The electrochemical biomass valorization of industrial by-products or pollutants using renewable electricity offers significant promise for carbon ***,the huge challenges still exist in the development of efficient bifunctional ***,we put forward a high-efficiency coelectrolysis system by coupling the nitrite reduction reaction(NO_(2)RR)and the glycerol oxidation reaction(GOR)over a novel heterogeneous β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl ***β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl shows excellent bifunctional performance with high Faradaic efficiencies of formate(90.1%)and NH_(3)(91.9%)at cell voltage of 1.5 V,high yield rate of formate(89.6 mg h^(-1)cm^(-2))and NH_(3)(36.07 mg h^(-1)cm^(-2))at cell voltage of 1.9 V,and superior stability in an anion exchange membrane *** in-situ Raman result confirms the unique Co/Cu-based bimetallic synergistic sites of β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl towards superior GOR performance,while the operando Fourier transform infrared spectroscopy demonstrates the improved protonation kinetics of key intermediates and optimized water dissociation ability ofβ-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl for high NO_(2)RR *** work illuminates alternative avenues to exploit the innovative and energy-saving technology for the co-production of high-added chemicals.

关键词： Heterogeneous catalyst β-Co(OH)_(2)/Cu_(2)(OH)_(3)Cl Bifunctional performance Nitrite reduction reaction Glycerol oxidation reaction

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Improving structure stability of single-crystalline Ni-rich cathode at high voltage by element gradient doping and interfacial modifcation

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Journal of Energy Chemistry 2025年第2期101卷 630-640,I0013页

作者： Ruijuan Wang Yixu Zhang Zhi Li Lei Wu Jiarui Chen Xiaolin Liu Hui Hu Hao Ding Shuang Cao Qiliang Wei Xianyou Wang National Base for International Science&Technology Cooperation of New Energy Equipment Energy Storage Materials and DevicesNational Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina Institute of Micro/Nano Materials and Devices Ningbo University of TechnologyNingbo 315211ZhejiangChina

Single-crystalline Ni-rich cathodes can provide high energy density and capacity retention rates for lithium-ion batteries(LIBs).However,single-crystalline Ni-rich cathodes experience severe transition metal dissolution,irreversible phase transitions,and reduced structural stability during prolonged cycling at high voltage,which will significantly hinder their practical ***,a Li4TeO5surface coating along with bulk Te-gradient doping strategy is proposed and developed to solve these issues for single-crystalline Ni-rich LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2)cathode(LTeO-1.0).It has been found that the bulk Te^(6+)gradient doping can lead to the formation of robust Te-O bonds that effectively inhibit H_(2)-H3 phase transformations and reinforce the lattice framework,and the in-situ Li4TeO5coating layer can act as a protective layer that suppresses the parasitic reactions and grain ***,the modified material exhibits a higher Young's modulus,which will be conducive to maintaining significant structural and electrochemical stability under high-voltage conditions,Especially,the LTeO-1.0 electrode shows the improved Li^(+)diffusion kinetics and thermodynamic stability as well as high capacity retention of 95.83%and 82.12%after 200 cycles at the cut-off voltage of 4.3 and 4,5 ***,the efficacious dualmodification strategy will definitely contribute to enhancing the structural and electrochemical stability of single-crystalline Ni-rich cathodes and developing their application in LIBs.

关键词： Single-crystalline Ni-rich cathode High cut-off voltage Material fragmentation Li_(4)TeO_(5)coating layer Te^(6+)doping

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Charge polarity inversion and zincophilicity improvement for chitosan separator towards durable aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 110-119,I0004页

作者： Jiaqi Yu Bo Liu Hong Ma Zehua Fan Xiang Han Qinghua Tian Jizhang Chen Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037JiangsuChina College of Mathematics and Physics Jinggangshan UniversityJi'an 343009JiangxiChina Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical EngineeringZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina

Aqueous zinc-ion batteries encounter enormous challenges such as Zn dendrites and parasitic *** modification is a highly effective strategy to address these *** the advantages of low cost,nontoxicity,biodegradability,good film-forming ability,superior hydro phi licity,and rich functional groups,chitosan is an ideal matrix for constructing ***,the presence of positive charges within chitosan in weakly acidic electrolytes is unfavorable for dendrite ***,Schiff base reaction is introduced to modify chitosan matrix,transforming its charge polarity from positive to ***,NbN with excellent zincophilicity is coated onto chitosan matrix,forming a Janus separator with low thickness of 19μm and considerably improved mechanical *** resultant separator can promote the transport of Zn^(2+)ions while triggering a repulsive shielding effect against anions,therefore dramatically enhancing Zn^(2+)ion transfer number from 0.28 to *** separator can also facilitate desolvation process,improve exchange current density,restrict two-dimensional Zn^(2+)ion diffusion,and enhance electrochemical kinetics,contributing to significantly inhibited dendrite growth,by-product formation,and hydrogen ***,stable and reversible Zn stripping/plating process is enabled for over 2500 h at 2 mA cm^(-2)and 2 mAh cm^(-2).And great rate capability and excellent cyclability can be achieved for full batteries even under harsh *** work provides new insights into separator design for Zn-based batteries.

关键词： Separator modification Charge polarity regulation Dendrite inhibition Aqueous zinc-ion batteries Chitosan utilization

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Fully enhances the performance of eutectic hydrogels in the field of flexible sensors by cellulose

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International Journal of Biological Macromolecules 2025年第PT 2期311卷 143914页

作者： Li, Yong Deng, Xin Cao, Peng Liu, Haoxiang Qing, Rongmei Dai, Zejia Guo, Fengxuan College of Materials Science and Engineering Central South University of Forestry and Technology Hunan Changsha410004 China Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology Central South University of Forestry and Technology Hunan Changsha410004 China

Deep eutectic hydrogels (DES hydrogels), fabricated from deep eutectic solvents (DES), offer superior stability and applicability compared to traditional polymer-based hydrogels. However, most DES hydrogels exhibit substantial hysteresis during stretching and low electrical conductivity due to the viscous nature of the solvents. This study presents an effective approach to enhance DES hydrogel performance. By anchoring flexible chains at various scales and using water as a lubricant, we obtained a eutectic hydrogel with high conductivity, low hysteresis, frost resistance and long service life. Testing demonstrated a 2.28-fold increase in conductivity (1.28 S/m), a 2.5-fold increase in tensile strength, and 1363 % elongation at break. Furthermore, the hydrogel retained excellent flexibility and tensile strength after 60 days at room temperature in an open-air environment. This demonstrates the DES hydrogel's significant potential for flexible sensor applications. This research provides a viable strategy for preparing high-performance DES hydrogels. © 2025

关键词： Conductive hydrogel Flexible sensor Microfibrillated cellulose (MFC)

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Dual-stage carbonization strategy for synthesizing biomass derived hard carbon with enhanced sodium-ion storage performances

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Journal of Industrial and Engineering Chemistry 2025年 148卷 830-837页

作者： Tang, Yi Peng, Jiao Yang, Juan Liu, Peng He, Li Zhou, Kangjie Qiu, Wang Xie, Zheng Liu, Min Wang, Xianyou National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion School of Chemistry Xiangtan University Hunan Xiangtan411105 China College of New Energy Ningbo University of Technology Zhejiang Ningbo315336 China

Hard carbon has become one of the most prominent anode materials for sodium ion batteries (SIBs) owing to its cost-effective and high capacity. High-temperature carbonization is the most common method for synthesizing biomass-derived hard carbon, and optimizing the carbonization temperature is considered an effective strategy for improving initial Coulombic efficiency (ICE) and discharge specific capacity. However, it is challenging how to obtain hard carbon materials that simultaneously exhibit high ICE and high specific capacity. In this work, the initial carbonization temperature is slightly higher than the pyrolysis temperature, and then followed by high-temperature carbonization process. This method effectively both reduces the specific surface area and enhances structural order, which is conductive to achieving higher ICE and capacity. As a result, it exhibits a maximum ICE of 92 % and a reversible capacity of 308 mAh g−1 when current density is 30 mA g−1. Furthermore, it also presents excellent cycling performance and maintaining 91.5 % of its capacity subsequent to 500 cycles when the current density is 300 mA g−1. Therefore, this straightforward and cost-effective method provides a meaningful attempt for the synthesis of other biomass-derived hard carbon as anode materials of SIBs. © 2025 The Korean Society of Industrial and Engineering Chemistry

关键词： Carbon capture and utilization

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