Journal of Energy Chemistry最新文献_第7页

Dual-regulation tailoring of tunnel-structured hexagonal tungsten oxide for high-performance ammonium-ion hybrid supercapacitors 用于高性能铵离子混合超级电容器的隧道结构六方氧化钨双调节裁剪

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jechem.2025.08.040

Guochuang Tian , Shuang Luo , Jinglv Feng , Yina Xiang , Hui Zhou , Bingsuo Zou , Jien Li

{"title":"Dual-regulation tailoring of tunnel-structured hexagonal tungsten oxide for high-performance ammonium-ion hybrid supercapacitors","authors":"Guochuang Tian , Shuang Luo , Jinglv Feng , Yina Xiang , Hui Zhou , Bingsuo Zou , Jien Li","doi":"10.1016/j.jechem.2025.08.040","DOIUrl":"10.1016/j.jechem.2025.08.040","url":null,"abstract":"<div><div>Ammonium-ion hybrid supercapacitors (A-HSCs) have emerged as promising candidates for next-generation energy storage owing to their inherent safety and environmental sustainability. Hexagonal tungsten oxide (<em>h</em>-WO<sub>3</sub>), with its well-defined tunnel structure, holds great promise as a negative electrode material for NH<sub>4</sub><sup>+</sup> storage. However, its practical application is hindered by structural instability and poor intrinsic electrical conductivity. To address these challenges, a dual-regulation strategy is proposed, integrating molybdenum (Mo) doping and NH<sub>4</sub><sup>+</sup> pre-intercalation to concurrently optimize the tunnel structure and electronic environment of <em>h</em>-WO<sub>3</sub> (Mo-NWO). Comprehensive experimental and theoretical analyses reveal that Mo doping narrows the bandgap of WO<sub>3</sub> and reduces the diffusion energy barrier, thereby accelerating NH<sub>4</sub><sup>+</sup> adsorption and diffusion. Simultaneously, NH<sub>4</sub><sup>+</sup> pre-intercalation stabilizes the tunnel framework via hydrogen bonding, ensuring structural reversibility. As expected, the Mo-NWO/AC electrode achieves a high areal capacitance of 13.6 F cm<sup>−2</sup> at 5 mA cm<sup>−2</sup> and retains 80.14 % of its capacitance after 5000 cycles, demonstrating exceptional rate capability and cycling stability. Moreover, the assembled Mn<sub>3</sub>O<sub>4</sub>//Mo-NWO/AC device delivers a high energy density of 3.41 mWh cm<sup>−2</sup> and outstanding long-term stability (85.75 % retention after 12,000 cycles). This work provides a viable strategy for designing high-performance NH<sub>4</sub><sup>+</sup> storage materials and advances the development of sustainable energy storage systems.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 261-273"},"PeriodicalIF":14.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nitrogen-doped carbon-support interaction induced d-orbital rearrangement for enhanced sodium-ion storage 氮掺杂碳负载相互作用诱导d轨道重排以增强钠离子存储

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jechem.2025.08.041

Yitong Sun , Mingyu Lian , Xuejing Guo , Jinlian Ma , Kai Liu , Zhengqing Ye , Xin Zhang , Ying Jiang , Lianqi Zhang

{"title":"Nitrogen-doped carbon-support interaction induced d-orbital rearrangement for enhanced sodium-ion storage","authors":"Yitong Sun , Mingyu Lian , Xuejing Guo , Jinlian Ma , Kai Liu , Zhengqing Ye , Xin Zhang , Ying Jiang , Lianqi Zhang","doi":"10.1016/j.jechem.2025.08.041","DOIUrl":"10.1016/j.jechem.2025.08.041","url":null,"abstract":"<div><div>Zinc telluride (ZnTe) with high density and low cost is considered as promising anode for sodium-ion batteries. However, ZnTe suffers from continuous capacity degradation owing to the low electronic conductivity, large volume expansion, and high ion-diffusion energy barriers. Herein, the nitrogen-doped carbon confined ZnTe polyhedron heterostructure (ZnTe/NC) is proposed, exploiting its orbital rehybridization and the realignment of energy level to improve storage performance. Systematic ex situ/in situ characterizations and simulations demonstrated that the elaborate ZnTe/NC offers abundant electron/ion transport pathways, accelerates Na<sup>+</sup> diffusion kinetics, and alleviates huge volume expansion. Notably, the nitrogen-doped carbon-support interaction induced via electron transfer between ZnTe sites and support elevates the energy level of Zn 3<em>d</em> orbital, greatly enhancing ion adsorption capability and reducing the ion diffusion barrier. As a result, the ZnTe/NC anode delivers a high discharge capacity of 470.5 mAh g<sup>−1</sup> and long cycling durability over 1000 cycles. This work uncovers that optimizing sodium ion adsorption and diffusion via <em>d</em>-orbital energy level modulation enabled by nitrogen-doped support interaction is an effective method for developing high-performance transition metal telluride anodes for alkali ion storage.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 435-443"},"PeriodicalIF":14.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Alloying-driven 3d orbital charge transfer for enhanced polysulfide adsorption and conversion in room temperature sodium-sulfur batteries 室温钠硫电池中增强多硫化物吸附和转化的合金驱动三维轨道电荷转移

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jechem.2025.08.043

Miao Huang , JiaKai Zhang , ShaoBo Jia , YiHui Jiang , Hao Zhang , ShengQiang Zhang , Jinxiang Diao , Xiaojie Liu

{"title":"Alloying-driven 3d orbital charge transfer for enhanced polysulfide adsorption and conversion in room temperature sodium-sulfur batteries","authors":"Miao Huang , JiaKai Zhang , ShaoBo Jia , YiHui Jiang , Hao Zhang , ShengQiang Zhang , Jinxiang Diao , Xiaojie Liu","doi":"10.1016/j.jechem.2025.08.043","DOIUrl":"10.1016/j.jechem.2025.08.043","url":null,"abstract":"<div><div>The severe shuttle effect and sluggish reaction kinetics in room-temperature sodium-sulfur (RT Na-S) batteries have been major bottlenecks hindering their practical application. To overcome these challenges, a straightforward reduction approach was employed to design three bimetallic alloy nanoparticles (FeNi, FeCo, and NiCo) supported on multistage porous carbon substrates. Experimental and theoretical calculations reveal that the charge transfer within the alloy catalyst influences the position of its d-band center and its degree of hybridization with sodium polysulfides (NaPSs). An increased charge transfer leads to a shift of the alloy’s d-band center closer to the Fermi energy level, thereby enhancing its adsorption and catalytic capabilities. Among the three alloy compositions, the FeNi alloy exhibits the highest charge transfer. Consequently, the FeNi alloy demonstrates the superior electrochemical performance, achieving a high reversible specific capacity of 848.2 mA h g<sup>−1</sup>, with an average capacity degradation rate of only 0.037 % per cycle over 1000 cycles at 1.2 C. The S/FeNi/NC cathode exhibits a low electrolyte-to-sulfur (E/S) ratio of 6.6 µL mg<sup>−1</sup>, while maintaining a high reversible specific capacity of 568.1 mA h g<sup>−1</sup>. This offers valuable insights for the application of alloy catalysts in the S/FeNi/NC cathode of RT Na-S batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 229-242"},"PeriodicalIF":14.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Cross-scale investigation of overcharge-induced thermal runaway propagation mechanism in sodium-ion batteries under multi-module configuration 多模块配置下钠离子电池过充热失控传播机制的跨尺度研究

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jechem.2025.08.042

Qinghua Gui , Jinzhong Li , Bowen Jin , Peng Liu , Kun Yu , Jiarui Zhang , Lei Mao

{"title":"Cross-scale investigation of overcharge-induced thermal runaway propagation mechanism in sodium-ion batteries under multi-module configuration","authors":"Qinghua Gui , Jinzhong Li , Bowen Jin , Peng Liu , Kun Yu , Jiarui Zhang , Lei Mao","doi":"10.1016/j.jechem.2025.08.042","DOIUrl":"10.1016/j.jechem.2025.08.042","url":null,"abstract":"<div><div>In electrochemical energy storage systems, the sodium-ion battery is typically integrated in the form of a “cell-module-cluster”, but its cross-scale thermal runaway triggering risk and the propagation mechanism remain unclear. This study reveals the cross-scale thermal runaway triggering and propagation behavior of sodium-ion batteries of “cell-module-cluster” under overcharge conditions, and investigates the effects of key factors, including module spacing, triggering cell location, and heat dissipation condition, on the thermal runaway propagation behavior. Results demonstrate that the thermal runaway propagation in a module containing the overcharged cell follows a sequential triggering mode, while thermal runaway in the downstream module exhibits a simultaneous triggering mode with greater severity. Furthermore, increasing the module spacing or enhancing the heat dissipation capacity can effectively reduce the heat accumulation and prevent the trigger of thermal runaway. On the above basis, the multi-dimensional evaluation strategy is proposed to quantitatively assess the hazard of sodium-ion battery cluster thermal runaway. The findings serve as a foundation for the safe design of sodium-ion batteries in energy storage systems.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 13-28"},"PeriodicalIF":14.9,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Lattice expansion in Ni3ZnC0.7@C weakening CO adsorption for efficient CO2 electroreduction Ni3ZnC0.7@C中晶格膨胀削弱CO吸附，实现高效CO2电还原

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jechem.2025.08.039

Jiangtao Yang , Yunzhen Jia , Guang Liu, Dazhong Zhong, Jinping Li, Qiang Zhao

{"title":"Lattice expansion in Ni3ZnC0.7@C weakening CO adsorption for efficient CO2 electroreduction","authors":"Jiangtao Yang , Yunzhen Jia , Guang Liu, Dazhong Zhong, Jinping Li, Qiang Zhao","doi":"10.1016/j.jechem.2025.08.039","DOIUrl":"10.1016/j.jechem.2025.08.039","url":null,"abstract":"<div><div>The metallic Ni catalyst suffers from strong binding with the *CO intermediate, resulting in poisoning of the catalyst surface. It is feasible to facilitate the generation of CO by alleviating the binding strength of the *CO intermediate on the Ni metal surface through a lattice expansion strategy. Here, Ni<sub>3</sub>ZnC<sub>0.7</sub>@C with lattice expansion was synthesized by co-doping with Zn and interstitial C through high-temperature pyrolysis. Structural characterization confirms that the lattice of Ni<sub>3</sub>ZnC<sub>0.7</sub> expands by 5.47 % compared to Ni due to the co-doping of Zn and interstitial C. The Ni<sub>3</sub>ZnC<sub>0.7</sub>@C possesses excellent catalytic performance with Faradaic efficiency (FE) of CO exceeding 90 % over a wide potential range from −0.8 to −1.4 V versus reversible hydrogen electrode (vs. RHE) with a peak FE<sub>CO</sub> of 96.6 % at −1.0 V vs. RHE. In membrane electrode assembly (MEA) testing, Ni<sub>3</sub>ZnC<sub>0.7</sub>@C achieves a FE<sub>CO</sub> of 81.4 % at the industrial-level current density of 400 mA cm<sup>−2</sup>. In situ attenuated total reflection surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) and density functional theory (DFT) calculations reveal that the co-introduction of Zn and interstitial C in the Ni crystal can significantly promote the desorption of *CO intermediate, which facilitates the generation of CO. This study demonstrates a viable way for designing efficient transition metal catalysts for CO<sub>2</sub> electroreduction through lattice strain engineering.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 47-55"},"PeriodicalIF":14.9,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Battery SOH enhanced solution: Voltage reconstruction and image recognition response to loss of data scenarios 电池SOH增强解决方案：电压重建和图像识别响应的数据丢失场景

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-28 DOI: 10.1016/j.jechem.2025.08.035

Xinghua Liu , Linxiang Zhou , Jiaqiang Tian , Longxing Wu , Zhongbao Wei , Hany M. Hasanien , Peng Wang

{"title":"Battery SOH enhanced solution: Voltage reconstruction and image recognition response to loss of data scenarios","authors":"Xinghua Liu , Linxiang Zhou , Jiaqiang Tian , Longxing Wu , Zhongbao Wei , Hany M. Hasanien , Peng Wang","doi":"10.1016/j.jechem.2025.08.035","DOIUrl":"10.1016/j.jechem.2025.08.035","url":null,"abstract":"<div><div>Accurate estimation of battery health status plays a crucial role in battery management systems. However, the lack of operational data still affects the accuracy of battery state of health (SOH) estimation. For this reason, a SOH estimation method is proposed based on charging data reconstruction combined with image processing. The charging voltage data is used to train the least squares generative adversarial network (LSGAN), which is validated under different levels of missing data. From a visual perspective, the Gram angle field method is applied to convert one-dimensional time series data into image data. This method fully preserves the time series characteristics and nonlinear evolution patterns, which avoids the difficulties and limited expressive power associated with manual feature extraction. At the same time, the Swin Transformer model is introduced to extract global structures and local details from images, enabling better capture of sequence change trends. Combined with the long short-term memory network (LSTM), this enables accurate estimation of battery SOH. Two different types of batteries are used to validate the test. The experimental results show that the proposed method has good estimation accuracy under different training proportions.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 155-169"},"PeriodicalIF":14.9,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-regulation of pore confinement and mouth size for enhanced sodium storage in hard carbon 增强钠在硬碳中的储存的孔约束和口尺寸的双重调节

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-28 DOI: 10.1016/j.jechem.2025.08.038

Zhiyuan Liu, Xin Wang, Xuan Xie, Yue Li, Hui Peng, Guofu Ma, Ziqiang Lei

{"title":"Dual-regulation of pore confinement and mouth size for enhanced sodium storage in hard carbon","authors":"Zhiyuan Liu, Xin Wang, Xuan Xie, Yue Li, Hui Peng, Guofu Ma, Ziqiang Lei","doi":"10.1016/j.jechem.2025.08.038","DOIUrl":"10.1016/j.jechem.2025.08.038","url":null,"abstract":"<div><div>Hard carbon (HC) remains a leading anode candidate for sodium-ion storage, yet its application is hindered by low initial Coulombic efficiency (ICE) and limited plateau capacity due to uncontrolled defect density and open porosity. Here, we propose a scalable dual-regulation strategy that simultaneously tunes pore mouth size and defect chemistry to enhance sodium storage performance. Using phenol-formaldehyde resin as the carbon precursor and phosphorus pentoxide (P<sub>2</sub>O<sub>5</sub>) as a bifunctional sacrificial template and dopant source, we synthesize phosphorus-functionalized hard carbon (PF-PHC) featuring a high density of closed pores with well-confined sub-nanometer pore entrances. The in-situ sublimation of P<sub>2</sub>O<sub>5</sub> during pyrolysis promotes the formation of closed-pore architectures, while residual phosphorus atoms effectively passivate vacancy-type defects, thereby reducing irreversible Na<sup>+</sup> adsorption and mitigating excessive solid electrolyte interphase (SEI) formation. As a result, PF-PHC achieves an ICE of 89.3% and a plateau capacity of 289 mAh g<sup>−1</sup>. In-situ characterizations reveal that regulating pore mouth dimensions decouples Na<sup>+</sup> and solvent access, enabling highly selective ion transport and stable interfacial chemistry. Sodium-ion hybrid capacitors (SIHCs) assembled based on PF-PHC deliver exceptional rate performance and outstanding long-term cycling stability, retaining 98.2% after 10,000 cycles at 2 A g<sup>−1</sup>. This study establishes pore mouth engineering as a robust and scalable design principle for advancing next-generation HC-based sodium storage materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 1-12"},"PeriodicalIF":14.9,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Medium-entropy-induced in-situ surface spinel phase towards stable Co-free Li-rich cathode material 中熵诱导原位尖晶石相形成稳定的无钴富锂正极材料

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-26 DOI: 10.1016/j.jechem.2025.08.031

Jiaming Miao , Qile Duan , Piluan Li , Haonan Li , Liangwei Liu , Yi Xiao , Jinyang Liu , Yue Lin , Xiang Ding , Lili Han

{"title":"Medium-entropy-induced in-situ surface spinel phase towards stable Co-free Li-rich cathode material","authors":"Jiaming Miao , Qile Duan , Piluan Li , Haonan Li , Liangwei Liu , Yi Xiao , Jinyang Liu , Yue Lin , Xiang Ding , Lili Han","doi":"10.1016/j.jechem.2025.08.031","DOIUrl":"10.1016/j.jechem.2025.08.031","url":null,"abstract":"<div><div>Co-free Li-rich Li<sub>1.2</sub>Ni<sub>0.2</sub>Mn<sub>0.6</sub>O<sub>2</sub> (LR) cathode shows the highest working capacity that can be applied to high-energy density Li-ion batteries (LIBs). However, poor cycle stability and voltage decay caused by phase transition are always hindering its further development. Herein, a novel medium-entropy Li-rich Mn-based cathode material (LRMEF) was synthesized via a simple sol-gel method. The introduction of multivalent ions (Al<sup>3+</sup>/Cu<sup>2+</sup> doping at Mn sites and F<sup>−</sup> doping at O sites) effectively mitigates the Jahn-Teller distortion of Mn ions and suppresses oxygen release. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) images confirm that this synergistic doping strategy induces the in-situ formation of an approximately 3 nm-thick spinel surface layer, which significantly enhances structural stability and ion diffusion kinetics. Besides, a series of in-situ/ex-situ characterization methods and density functional theory (DFT) calculations have been carried out to fundamentally shed light on the optimized structure-activity relationship and reaction mechanism. As a result, the LR material with entropy regulation and anion doping exhibits excellent cycling stability (189.2 mAh g<sup>−1</sup> at 1 C with 84 % capacity retention after 300 cycles), rate performance (164.1 mAh g<sup>−1</sup> at 5 C), and voltage retention (82.7 % at 1 C after 300 cycles), demonstrating great application prospects in future high-energy-density LIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 294-305"},"PeriodicalIF":14.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in Cu-based catalysts for methanol steam reforming: Mechanistic insights and atomic-level design 甲醇蒸汽重整用cu基催化剂的研究进展：机理和原子水平设计

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-26 DOI: 10.1016/j.jechem.2025.08.032

Yongxiao Tuo , Haoyang Zhao , Xue Chen , Fei Wang , Qing Lu , Yifei Zhang , Xiang Feng , De Chen

{"title":"Advances in Cu-based catalysts for methanol steam reforming: Mechanistic insights and atomic-level design","authors":"Yongxiao Tuo , Haoyang Zhao , Xue Chen , Fei Wang , Qing Lu , Yifei Zhang , Xiang Feng , De Chen","doi":"10.1016/j.jechem.2025.08.032","DOIUrl":"10.1016/j.jechem.2025.08.032","url":null,"abstract":"<div><div>Methanol steam reforming (MSR) represents a promising route for hydrogen production, leveraging the high energy density and liquid-phase storage advantages of methanol. Copper-based catalysts have become indispensable for MSR due to their cost-effectiveness, exceptional catalytic activity, and tunable selectivity. However, persistent challenges such as thermal sintering, undesirable CO byproduct formation, diminished low-temperature reactivity, and long-term catalyst deactivation limit their broad industrial deployment. This review comprehensively examines the mechanistic pathways of MSR over Cu-based catalysts, with particular focus on differentiating catalyst formulations optimized for high-temperature (>200 °C) versus low-temperature (<200 °C) operation. It highlights the decisive influence of Cu nanoparticle size, electronic structure, and crystal structure on catalytic performance. Cutting-edge design strategies, including multi-element engineering, innovative synthesis techniques, and deactivation mitigation, are critically evaluated to elucidate mechanistic connections between atomic-scale structure and catalytic performance enhancement. Finally, industrial applications of commercial Cu/ZnO/Al<sub>2</sub>O<sub>3</sub> variants and their scalability challenges are discussed, alongside prospective strategies for catalyst innovation and engineering to advance next-generation hydrogen production.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 64-89"},"PeriodicalIF":14.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On-site hydrolytic H2 production by CaH2/(Al/Si) composites via Na+ bridging effect for fuel cell 基于Na+桥接效应的CaH2/(Al/Si)复合材料燃料电池现场水解制氢研究

IF 14.9 1区化学

Journal of Energy Chemistry Pub Date : 2025-08-26 DOI: 10.1016/j.jechem.2025.07.090

Ali Hammad , Siyi Zou , Fandi Ning , Ghulam Nabi , Yuzhuo Jiang , Bin Tian , Wentao Huang , Muhammad Rashid , Shiqi Zhao , Xiaochun Zhou

{"title":"On-site hydrolytic H2 production by CaH2/(Al/Si) composites via Na+ bridging effect for fuel cell","authors":"Ali Hammad , Siyi Zou , Fandi Ning , Ghulam Nabi , Yuzhuo Jiang , Bin Tian , Wentao Huang , Muhammad Rashid , Shiqi Zhao , Xiaochun Zhou","doi":"10.1016/j.jechem.2025.07.090","DOIUrl":"10.1016/j.jechem.2025.07.090","url":null,"abstract":"<div><div>Inorganic materials can solve transportable and on-site hydrolytic hydrogen generation issues. CaH<sub>2</sub>/(Al/Si) composites are preferable due to their notable chemical properties. However, these composites require pretreatments, an inert environment, and long hours of physical ball milling for high homogeneity and synergistic effects. CaH<sub>2</sub> also inhibits the hydrolysis reaction by forming its products on the Al/Si surface, which hinders the direct utilization of composites. This work represents the first investigation of NaH-CaH<sub>2</sub>(Al/Si) fuel composites, which greatly overcome these limitations and can be directly used for on-site hydrogen generation and proton exchange membrane (PEM) fuel cells. The NaH-CaH<sub>2</sub>(Al/Si) fuel composites were prepared by using a straightforward mixing method with variable composition ratios, showing high H<sub>2</sub> yield and fuel cell (FC) performance. NaH addition provides the bridge effect, which opens up a new way to enable efficient hydrolysis and greatly enhances the hydrolysis activity of CaH<sub>2</sub>/(Al/Si) composites. The novel fuel composites (NaH-CaH<sub>2</sub>/Al) have extraordinary FC performance and a 0.42 W/cm<sup>2</sup> peak power density greater than commercial hydrogen generators. It provides high H<sub>2</sub> yield 84.4 % for NaH-CaH<sub>2</sub>/Al and 82 % for NaH-CaH<sub>2</sub>/Si compared to NaOH-CaH<sub>2</sub>(Al/Si), NaCl-CaH<sub>2</sub>(Al/Si), and KCl-CaH<sub>2</sub>(Al/Si) composites. The NaH bridge effect hinders the direct water contact and stops the formation of Ca(OH)<sub>2</sub> around Al/Si, which provides adequate pathways for the CaH<sub>2</sub>(Al/Si) hydrolysis. The impressive capabilities of novel fuel composites are anticipated to offer practical uses in fuel cells, automobile applications, and portable/on-board H<sub>2</sub> generation.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"112 ","pages":"Pages 97-110"},"PeriodicalIF":14.9,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0