Advanced Energy Materials最新文献_第3页

Advancing Flow Batteries: High Energy Density and Ultra-Fast Charging via Room-Temperature Liquid Metal

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202405066

Yi He, Yifan Cui, Jianwen Yu, Wenxu Shang, Peng Tan

{"title":"Advancing Flow Batteries: High Energy Density and Ultra-Fast Charging via Room-Temperature Liquid Metal","authors":"Yi He, Yifan Cui, Jianwen Yu, Wenxu Shang, Peng Tan","doi":"10.1002/aenm.202405066","DOIUrl":"https://doi.org/10.1002/aenm.202405066","url":null,"abstract":"Global climate change necessitates urgent carbon neutrality. Energy storage is crucial in this effort, but adoption is hindered by current battery technologies due to low energy density, slow charging, and safety issues. A novel liquid metal flow battery using a gallium, indium, and zinc alloy (Ga80In10Zn10, wt.%) is introduced in an alkaline electrolyte with an air electrode. This system offers ultrafast charging comparable to gasoline refueling (<5 min) as demonstrated in the repeated long-term discharging (123 h) process of 317 mAh capacity at the current density of 10 mA cm−2 with an average voltage of 1.1 V. A high practical capacity density of 635.1 mAh g−1 is achieved in this brand-new battery with a potential theoretical value of 1004.4 mAh g−1. Microscopic and numerical simulations reveal significant hydrogen evolution reaction and dendrite suppression compared to Zn and pure Ga electrodes. The potassium iodide (KI)-modified Ga80In10Zn10-air battery exhibits a reduced charging voltage of 1.77 V and high energy efficiency of 57% at 10 mA cm−2 over 800 cycles, outperforming conventional Pt/C and Ir/C-based systems with 22% improvement. This innovative battery addresses the limitations of traditional lithium-ion batteries, flow batteries, and Zn-air batteries, contributing advanced energy storage technologies to global carbon neutrality.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"27 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Effective Precursor-Solutioned Strategy for Developing Cu2ZnSn(S, Se)4 Thin Film Toward High Efficiency Solar Cell 开发 Cu2ZnSn（S，Se）4 薄膜以实现高效太阳能电池的有效前驱体溶解策略

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202403950

Ang Liang, Yue Jian, Yun Zhao, Shuo Chen, Jun Zhao, Zhuanghao Zheng, Jingting Luo, Hongli Ma, Xianghua Zhang, Zhenghua Su, Guangxing Liang

{"title":"An Effective Precursor-Solutioned Strategy for Developing Cu2ZnSn(S, Se)4 Thin Film Toward High Efficiency Solar Cell","authors":"Ang Liang, Yue Jian, Yun Zhao, Shuo Chen, Jun Zhao, Zhuanghao Zheng, Jingting Luo, Hongli Ma, Xianghua Zhang, Zhenghua Su, Guangxing Liang","doi":"10.1002/aenm.202403950","DOIUrl":"https://doi.org/10.1002/aenm.202403950","url":null,"abstract":"Enhancing the efficiency of Cu2ZnSn (S, Se)4 (CZTSSe) thin-film solar cells requires the development of well-crystallized light-absorbing layers. A deep understanding of the role of precursor solution chemistry in film nucleation and crystal growth processes is essential. Insights into these processes enable the development of innovative strategies to enhance absorber quality, minimize detrimental bulk defects, and ultimately improve device performance. This study elucidates the condensation reactions between thiourea and metal cations, as well as the alcoholysis of 2-methoxyethanol (MOE), at different concentrations of precursor solutions. The primary focus of this study is implementing a simple and environmentally friendly innovative spin-coating strategy, aimed at optimizing Cu2ZnSnS4 (CZTS) precursor films and adjusting the Se content within the film bulk to promote grain growth during selenization. This strategy effectively improves absorber morphology while suppressing the formation of deep-level defects, thereby enhancing carrier transport in both interfacial and bulk regions of the absorber layer. Consequently, CZTSSe absorbers with enhanced crystallinity and reduced defects are synthesized, resulting in a solar cell with an impressive efficiency of 14.10%. These findings underscore the potential for creating highly efficient kesterite CZTSSe solar cells through the manipulation of precursor solution chemistry using environmentally friendly solvents.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"6 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202404726

Florian Scheler, Silvia Mariotti, Daniele Mantione, Sahil Shah, Dorothee Menzel, Hans Köbler, Maxim Simmonds, Thomas W. Gries, Jona Kurpiers, Viktor Škorjanc, Jinzhao Li, Amran Al-Ashouri, Philipp Wagner, Steven P. Harvey, Fengjiu Yang, Marin Rusu, Thomas Unold, Bernd Stannowski, Kai Zhu, Felix Lang, Dieter Neher, Eva Unger, Antonio Abate, David Mecerreyes, Martin Stolterfoht, Eike Köhnen, Lars Korte, Marko Topič, Steve Albrecht

{"title":"Correlation of Band Bending and Ionic Losses in 1.68 eV Wide Band Gap Perovskite Solar Cells","authors":"Florian Scheler, Silvia Mariotti, Daniele Mantione, Sahil Shah, Dorothee Menzel, Hans Köbler, Maxim Simmonds, Thomas W. Gries, Jona Kurpiers, Viktor Škorjanc, Jinzhao Li, Amran Al-Ashouri, Philipp Wagner, Steven P. Harvey, Fengjiu Yang, Marin Rusu, Thomas Unold, Bernd Stannowski, Kai Zhu, Felix Lang, Dieter Neher, Eva Unger, Antonio Abate, David Mecerreyes, Martin Stolterfoht, Eike Köhnen, Lars Korte, Marko Topič, Steve Albrecht","doi":"10.1002/aenm.202404726","DOIUrl":"https://doi.org/10.1002/aenm.202404726","url":null,"abstract":"Perovskite solar cells (PSCs) are promising for high-efficiency tandem applications, but their long-term stability, particularly due to ion migration, remains a challenge. Despite progress in stabilizing PSCs, they still fall short compared to mature technologies like silicon. This study explores how different piperazinium salt treatments using iodide, chloride, tosylate, and bistriflimide anions affect the energetics, carrier dynamics, and stability of 1.68 eV bandgap PSCs. Chloride-based treatments achieved the highest power conversion efficiency (21.5%) and open-circuit voltage (1.28 V), correlating with stronger band bending and n-type character at the surface. At the same time, they showed reduced long-term stability due to increased ionic losses. Tosylate-treated devices offered the best balance, retaining 96.4% efficiency after 1000 h (ISOS-LC-1I). These findings suggest that targeted surface treatments can enhance both efficiency and stability in PSCs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"22 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142832878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intrinsic Screening Descriptor for Organic Proton Donors to Enable Long Lifespan Aqueous Zinc||Polyaniline Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202403392

Qianjin Zhang, Tao Chen, Xiaohu Qian, Jiajun Fu

{"title":"Intrinsic Screening Descriptor for Organic Proton Donors to Enable Long Lifespan Aqueous Zinc||Polyaniline Batteries","authors":"Qianjin Zhang, Tao Chen, Xiaohu Qian, Jiajun Fu","doi":"10.1002/aenm.202403392","DOIUrl":"https://doi.org/10.1002/aenm.202403392","url":null,"abstract":"The incorporation of additives into aqueous electrolytes provides substantial opportunities to mitigate dendrite formation and side reactions on zinc anodes. However, there is a lack of an effective guideline for selecting suitable electrolyte additives based on critical performance-limiting factors. Herein, the use of the acid dissociation constant (pKa) as an intrinsic descriptor for screening suitable organic proton donors is proposed to achieve highly reversible Zn||polyaniline (PANI) batteries. Experimental results and theoretical calculations reveal that L-malic acid (L-MA) with a low pKa can supply constant protons to effectively reduce the accumulation of nonconductive alkaline byproducts and address the deprotonation issue of the PANI cathode. Meanwhile, the deprotonated malate anions form bidentate coordination with Zn2+, thereby reconfiguring a water-deficient solvation structure of hydrated Zn2+ and facilitating the formation of ZnCO3-rich solid electrolyte interphase. Taking L-MA as a demonstration, Zn||Zn symmetric cells can stably cycle for over 460 h at a high depth of discharge of 80%. Additionally, the L-MA additive enables Zn||PANI full cells to retain 89% capacity after 5000 cycles. The screening principle of organic proton-donors that can simultaneously stabilize Zn anode and cathode of aqueous batteries is highlighted here.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"22 2 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Tetrahydropyran-Based Weakly Solvating Electrolyte for Low-Temperature and High-Voltage Lithium Metal Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202404120

Zezhuo Li, Yaqi Liao, Haijin Ji, Xing Lin, Ying Wei, Shuaipeng Hao, Xueting Hu, Lixia Yuan, Zhimei Huang, Yunhui Huang

{"title":"A Tetrahydropyran-Based Weakly Solvating Electrolyte for Low-Temperature and High-Voltage Lithium Metal Batteries","authors":"Zezhuo Li, Yaqi Liao, Haijin Ji, Xing Lin, Ying Wei, Shuaipeng Hao, Xueting Hu, Lixia Yuan, Zhimei Huang, Yunhui Huang","doi":"10.1002/aenm.202404120","DOIUrl":"https://doi.org/10.1002/aenm.202404120","url":null,"abstract":"Ether-based electrolytes show great potential in low-temperature lithium metal batteries (LMBs) for their low viscosity and decent reduction stability. However, conventional ethers with multidentate chelate sites suffer from low oxidation stability and high desolvation energy barrier due to the strong coordination between oxygen and Li+. Herein, cyclic tetrahydropyran (THP) with a unidentate site is designed as a solvent, and fluoroethylene carbonate (FEC) and lithium nitrate (LiNO3) serve as additives for low-temperature LMBs. The cyclic strain and unidentate chelate effect endow THP with a weak affinity to Li+ ions, which accelerates Li+ desolvation process and induces the anion-derived electrode/electrolyte interface at low temperature. The formed inorganic-rich interface further improves the oxidation stability and expedites the interfacial ion transportation. As a result, the assembled Li-LiNi0.8Mn0.1Co0.1O2 (NMC811) cell stably cycles with 87% capacity retention after 100 cycles at −40 °C and 4.5 V. The 2.7 Ah Li-NMC811 pouch cell with an energy density of 403 Wh kg−1 delivers 53% of the room-temperature capacity at −50 °C. This work reveals that regulating the chelate site of solvents can well optimize the electrolytes to realize low-temperature LMBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"13 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Distance-Dependent Electric Field Theory for Sliding Mode Triboelectric Nanogenerators

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-17 DOI: 10.1002/aenm.202403853

Rameesh L. Bulathsinghala, Jonathan H.B. Deane, R.D. Ishara G. Dharmasena

{"title":"The Distance-Dependent Electric Field Theory for Sliding Mode Triboelectric Nanogenerators","authors":"Rameesh L. Bulathsinghala, Jonathan H.B. Deane, R.D. Ishara G. Dharmasena","doi":"10.1002/aenm.202403853","DOIUrl":"https://doi.org/10.1002/aenm.202403853","url":null,"abstract":"Triboelectric nanogenerators (TENGs) have demonstrated outstanding potential as energy harvesters and sensors for future wearable electronics. However, TENGs still require major improvements in their theory and optimization, especially for the sliding-mode designs. Addressing this gap, a novel theoretical model based on the distance-dependent electric field (DDEF) theory for sliding mode TENGs is presented here. The model is used to simulate the electrical outputs and impedance behaviour of a sliding mode TENG, and the results are verified experimentally. The outcomes indicate that compared to existing theoretical models, this new model provides higher accuracy in representing experimental TENG. Next, all the primary parameters (material, structural and motion parameters) which affect the sliding mode TENG are analyzed, uncovering new optimization strategies and more comprehensive parametric analysis compared to previous models. More importantly, the theoretical approach is equally applicable to sliding mode TENG as well as contact-separation mode TENG. This eliminates the need for bespoke capacitor models for each TENG type, leading to a universal theoretical platform for TENGs. The new model facilitates cross-comparison between different TENG working modes, uncovering a range of previously unreported output trends. Hence, this work significantly expands the understanding of TENGs, paving way to more efficient future device designs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"13 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Regulating and Stabilizing Strong Metal‐Support Interactions on Ni/TiO2 by Crystal Phase for Ultra‐Stable Ethanol Reforming

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-16 DOI: 10.1002/aenm.202402295

Songshan Zhu, Shimin Ma, Di Song, Sufang He, Yunzhu Wang, Jichang Lu, Tianhao Ai, Yongming Luo

{"title":"Regulating and Stabilizing Strong Metal‐Support Interactions on Ni/TiO2 by Crystal Phase for Ultra‐Stable Ethanol Reforming","authors":"Songshan Zhu, Shimin Ma, Di Song, Sufang He, Yunzhu Wang, Jichang Lu, Tianhao Ai, Yongming Luo","doi":"10.1002/aenm.202402295","DOIUrl":"https://doi.org/10.1002/aenm.202402295","url":null,"abstract":"The regulation and stabilization of strong metal‐support interactions (SMSI) in high temperature hydrogen‐rich reaction condition remains a huge challenge due to its structural sensitivity. Herein, tunable SMSI is constructed and stabilized on TiO2 supported Ni catalysts by TiO2 crystal phase engineering strategy, and then a SMSI‐degree‐depended ethanol stream reforming (ESR) performance is demonstrated. Rutile supported Ni exhibited a weakened SMSI with 48.6% coverage, exposing more metallic Ni and Ni‐TiO2 perimeter interface sites, and displayed exceptional H2 yield of 4.7 molH2/molethanol and an ultra‐long stability of 420 h without deactivation at 500 °C. The low reaction energy and high resistance to carbon deposition (0.9 mgc/gcat·h) and Ni0 sintering on Ni/r‐TiO2 catalyst explained its excellent catalytic performance. Furthermore, the effect of well‐defined SMSI structures on the reaction pathway and deactivation mechanism of the ESR is clarified. This work provides a precedent for the tailor and application of SMSI in high temperature hydrogen‐rich reaction conditions.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"20 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineered Sodium Metal Anodes: Tackling Sulfur-Derivative Challenges for Advanced Sodium–Sulfur Batteries 工程金属钠阳极：应对先进钠硫电池的硫衍生挑战

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-16 DOI: 10.1002/aenm.202404901

Qing Zhao, Tiehan Mei, Yi Li, Xitao Lin, Yubin Niu, Jian Jiang, Maowen Xu, Yuruo Qi

{"title":"Engineered Sodium Metal Anodes: Tackling Sulfur-Derivative Challenges for Advanced Sodium–Sulfur Batteries","authors":"Qing Zhao, Tiehan Mei, Yi Li, Xitao Lin, Yubin Niu, Jian Jiang, Maowen Xu, Yuruo Qi","doi":"10.1002/aenm.202404901","DOIUrl":"https://doi.org/10.1002/aenm.202404901","url":null,"abstract":"The development of room temperature sodium–sulfur (RT Na─S) batteries has been significantly constrained by the dissolution/shuttle of sulfur-derivatives and the instability of sodium anode. This study presents an engineered sodium metal anode (NBS), featuring sodium bromide (NaBr) along with sodiophilic components like tin metal (Sn) and sodium-tin (Na─Sn) alloy. This configuration exhibits high plating/stripping reversibility with minimal nucleation/growth barriers in an ester-based electrolyte, allowing stable cycling of symmetric cells at 2 mA cm⁻2/2 mA h cm⁻2 for over 2000 h at a low overpotential of 30 mV. Importantly, the weak adsorption and reduced electron transfer towards sulfur-derivatives, along with the facile dissociation of Na2S2/Na2S, effectively minimize the accumulation of sulfur-derivatives, thereby improving the interfacial stability of the NBS electrode in sulfur-derivatives-involved conditions. As a result, the NBS anode endows the Na─S full cells paired with either a Co-NMCN@S or SPAN cathode superior electrochemical performance, with the SPAN//NBS system delivering an outstanding reversible capacity of 1639.5 mA h g⁻¹ and a low degradation rate of 0.06% per cycle at 0.5C. This study elucidates the complex deposition/dissolution kinetics and interface chemistry associated with sulfur species, providing valuable insights for enhancing sodium anodes in practical RT Na─S systems.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"25 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure of Lithium Metal Electrodeposited at the Steel|Li6PS5Cl Interface in “Anode-Free” Solid-State Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-15 DOI: 10.1002/aenm.202404975

Juri Becker, Till Fuchs, Till Ortmann, Sascha Kremer, Felix H. Richter, Jürgen Janek

{"title":"Microstructure of Lithium Metal Electrodeposited at the Steel|Li6PS5Cl Interface in “Anode-Free” Solid-State Batteries","authors":"Juri Becker, Till Fuchs, Till Ortmann, Sascha Kremer, Felix H. Richter, Jürgen Janek","doi":"10.1002/aenm.202404975","DOIUrl":"https://doi.org/10.1002/aenm.202404975","url":null,"abstract":"Recent research shows that integrating lithium metal anodes can enhance battery energy density, but the high reactivity of lithium requires handling under inert conditions to avoid degradation. To overcome this, reservoir-free cells (RFCs) are explored, where lithium metal is electrodeposited at the current collector (CC) and solid electrolyte (SE) interface during initial charging. The electrochemical properties of electrodeposited lithium are influenced by its morphology and microstructure, which impact lithium discharge capacity and pore formation. However, little is known about how to control the microstructure of electrodeposited lithium. This work experimentally characterizes the lithium microstructure at the steel|Li6PS5Cl interface using cryogenic ion beam milling, scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD), focusing on the effects of electrodeposition current density and lithium layer thickness. The results show that layer thickness, not current density, primarily governs the lithium microstructure. This “specimen thickness effect” is qualitatively described using a Monte Carlo Potts model and indicates that electrodeposited lithium metal quickly equilibrates at room temperature.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"22 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vacancy-Anchored Sub-Nanometer Ru Catalyst with High Activity and Strong Durability at 800 °C Dry Reforming of Methane

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-15 DOI: 10.1002/aenm.202404936

Juanjuan Yang, Zhiyang Cao, Yujie Wan, Shuhui Guan, Bo Jiang, Yusuke Yamauchi, Hexing Li

{"title":"Vacancy-Anchored Sub-Nanometer Ru Catalyst with High Activity and Strong Durability at 800 °C Dry Reforming of Methane","authors":"Juanjuan Yang, Zhiyang Cao, Yujie Wan, Shuhui Guan, Bo Jiang, Yusuke Yamauchi, Hexing Li","doi":"10.1002/aenm.202404936","DOIUrl":"https://doi.org/10.1002/aenm.202404936","url":null,"abstract":"Dry reforming of methane (DRM) represents an important way to convert both CO2 and CH4 to reduce greenhouse effects and produce valuable chemical products. Owing to the strong bonding energies of both CO2 and CH4 molecules, DRM usually proceeds at a high temperature, which inevitably causes catalyst sintering, leading to catalyst deactivation. This work develops a highly stable sub-nanometer Ru catalyst on a Ni-doped MgO support using Mg2+ vacancies as anchors. The optimized Ru1.5/Ni1-MgO-R catalyst displays 90% CH4 conversion and 92% CO2 conversion to syngas in DRM at 800 °C. More importantly, it exhibits strong durability and can run continuously for more than 1200 h. Both the characterizations and the density functional theory (DFT) calculations demonstrate that the Ni2+ substituted Mg2+ in the MgO matrix produces Mg2+ vacancies (MgV), which can stabilize sub-nanometer Ru clusters of ≈0.9 nm. Moreover, the presence of Mgv-Ru8 clusters strongly stabilizes sub-nanometer Ru. This study contributes valuable insights into the design of sub-nanometer metal catalysts with strong sintering resistance at high temperatures.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"17 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142825718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0