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Concurrent Operando Neutron Imaging and Diffraction Analysis Revealing Spatial Lithiation Phase Evolution in an Ultra-Thick Graphite Electrode
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-21 DOI: 10.1002/aenm.202405238
Markus Strobl, Monica E. Baur, Stavros Samothrakitis, Florencia Malamud, Xiaolong Zhang, Patrick K.M. Tung, Søren Schmidt, Robin Woracek, Jongmin Lee, Ryoji Kiyanagi, Luise Theil Kuhn, Inbal Gavish Segev, Yair Ein-Eli
{"title":"Concurrent Operando Neutron Imaging and Diffraction Analysis Revealing Spatial Lithiation Phase Evolution in an Ultra-Thick Graphite Electrode","authors":"Markus Strobl, Monica E. Baur, Stavros Samothrakitis, Florencia Malamud, Xiaolong Zhang, Patrick K.M. Tung, Søren Schmidt, Robin Woracek, Jongmin Lee, Ryoji Kiyanagi, Luise Theil Kuhn, Inbal Gavish Segev, Yair Ein-Eli","doi":"10.1002/aenm.202405238","DOIUrl":"https://doi.org/10.1002/aenm.202405238","url":null,"abstract":"Energy-efficient, safe, and reliable Li-ion batteries (LIBs) are required for a wide range of applications. The introduction of ultra-thick graphite anodes, desired for high energy densities, meets limitations in internal electrode transport properties, leading to detrimental consequences. Yet, there is a lack of experimental tools capable of providing a complete view of local processes. Here, a multi-modal <i>operando</i> measurement approach is introduced, enabling quantitative spatio-temporal observations of Li concentrations and intercalation phases in ultra-thick graphite electrodes. Neutron imaging and diffraction concurrently provide correlated multiscale information from the scale of the cell down to the crystallographic scale. In particular, the evolving formation of the solid electrolyte interphase (SEI), observation of gradients in total lithium content, as well as in the formation of ordered Li<sub>x</sub>C<sub>6</sub> phases and trapped lithium are mapped throughout the first charge–discharge cycle of the cell. Different lithiation stages co-exist during charging and discharging; delayed lithiation and delithiation processes are observed in central regions of the electrode, while the SEI formation, potential plating, and dead lithium are predominantly found closer to the interface with the separator. The study emphasizes the potential to investigate Li-ion diffusion and the kinetics of lithiation phase formation in thick electrodes.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"6 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992558","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
Separator-Supported Electrode Configuration for Ultra-High Energy Density Lithium Secondary Battery (Adv. Energy Mater. 3/2025)
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-21 DOI: 10.1002/aenm.202570016
Ju Young Kim, Min Young Seo, Jaecheol Choi, Yoon Ho Lee, YongJoo Kim, Seok Hun Kang, Yong Min Lee, Young-Gi Lee
{"title":"Separator-Supported Electrode Configuration for Ultra-High Energy Density Lithium Secondary Battery (Adv. Energy Mater. 3/2025)","authors":"Ju Young Kim, Min Young Seo, Jaecheol Choi, Yoon Ho Lee, YongJoo Kim, Seok Hun Kang, Yong Min Lee, Young-Gi Lee","doi":"10.1002/aenm.202570016","DOIUrl":"https://doi.org/10.1002/aenm.202570016","url":null,"abstract":"<b>Lithium Secondary Batteries</b>","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"74 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991621","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
Strong Polar Optical Phonon Screening and Softening Enhance the Thermoelectric Performance of Zintl Compounds
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-21 DOI: 10.1002/aenm.202405024
Muchun Guo, Ming Liu, Donglin Yuan, Hong Chen, Chenyue Sun, Qinyong Zhang, Yuke Zhu, Fengkai Guo, Yuan Yu, Jiehe Sui
{"title":"Strong Polar Optical Phonon Screening and Softening Enhance the Thermoelectric Performance of Zintl Compounds","authors":"Muchun Guo, Ming Liu, Donglin Yuan, Hong Chen, Chenyue Sun, Qinyong Zhang, Yuke Zhu, Fengkai Guo, Yuan Yu, Jiehe Sui","doi":"10.1002/aenm.202405024","DOIUrl":"https://doi.org/10.1002/aenm.202405024","url":null,"abstract":"Ternary CaAl<sub>2</sub>Si<sub>2</sub>-structure-type Zintl compounds are promising p-type counterparts to n-type Mg<sub>3</sub>(Sb, Bi)<sub>2</sub> for thermoelectric energy conversion. However, many of these p-type Zintl compounds suffer from low carrier concentration and mobility, resulting in poor thermoelectric performance. Here, it is revealed that their ultralow mobility stems from strong polar optical phonon scattering, and demonstrate that their electrical transport properties can be dramatically boosted by employing a screening effect. By employing isovalent alloying with Cd and Yb, along with Li aliovalent acceptor doping in CaMg<sub>2</sub>Sb<sub>2</sub> to increase carrier concentration and induce a strong screening effect, a significant improvement in carrier mobility and, consequently, the power factor is achieved. Moreover, isovalent alloying weakens chemical bonding, causing the softening and deceleration of both acoustic and optical phonons and, thus, a reduction in lattice thermal conductivity. As a result, a <i>ZT</i> of 1.1 is achieved in the Ca<sub>0.69</sub>Yb<sub>0.3</sub>Li<sub>0.01</sub>Mg<sub>1.5</sub>Cd<sub>0.5</sub>Sb<sub>2</sub> sample at 773 K, representing a 30-fold increase compared to the pristine CaMg<sub>2</sub>Sb<sub>2</sub>. It is also proposed that the polar coupling constant can serve as a criterion for identifying materials with low intrinsic carrier concentration and mobility but with potential for thermoelectric applications facilitating the development of other thermoelectric materials beyond CaAl<sub>2</sub>Si<sub>2</sub>-structure-type Zintl compounds.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"62 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992559","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
Design Strategies for Practical Zinc-Air Batteries Toward Electric Vehicles and beyond
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-21 DOI: 10.1002/aenm.202405326
Sambhaji S. Shinde, Sung-Hae Kim, Nayantara K. Wagh, Jung-Ho Lee
{"title":"Design Strategies for Practical Zinc-Air Batteries Toward Electric Vehicles and beyond","authors":"Sambhaji S. Shinde, Sung-Hae Kim, Nayantara K. Wagh, Jung-Ho Lee","doi":"10.1002/aenm.202405326","DOIUrl":"https://doi.org/10.1002/aenm.202405326","url":null,"abstract":"Zinc-air batteries (ZABs) offer promising forthcoming large-scale high-density storage systems and the cost-effectiveness of electrode materials, specifically in solid-state and liquid electrolytes. However, the uncontrolled diffusion and utilization of irreversible zinc components and cell design principles limit practical applications with severe capacity fade and interfacial reactions. In this perspective article, the aim is to shed lights on the underlying mechanisms of solid electrolytes and interfaces alongside the current status and prospective research insights. Formulations of ampere-hour (Ah)-scale cylindrical/pouch cells are discussed for 100–500 Wh kg<sup>−1</sup> cell-level energy metrics under realistic operations. The electrode/electrolyte interface dynamics, scale-up readiness, testing protocols, and key performance metrics are also suggested for transforming lab-scale research into practical production.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"74 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992521","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
Photothermal Catalysts, Light and Heat Management: From Materials Design to Performance Evaluation
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-21 DOI: 10.1002/aenm.202405272
Enrique V. Ramos-Fernandez, Alejandra Rendon-Patiño, Diego Mateo, Xinhuilan Wang, Pia Dally, Mengmeng Cui, Pedro Castaño, Jorge Gascon
{"title":"Photothermal Catalysts, Light and Heat Management: From Materials Design to Performance Evaluation","authors":"Enrique V. Ramos-Fernandez, Alejandra Rendon-Patiño, Diego Mateo, Xinhuilan Wang, Pia Dally, Mengmeng Cui, Pedro Castaño, Jorge Gascon","doi":"10.1002/aenm.202405272","DOIUrl":"https://doi.org/10.1002/aenm.202405272","url":null,"abstract":"Photothermal catalysis, a frontier in heterogeneous catalysis, combines light-driven and thermally enhanced chemical reactions to optimize energy use and reaction efficiencies at catalytic active sites. By leveraging photothermal conversion, this approach links renewable energy sources with industrial chemical processes, offering significant potential for sustainable applications. This review categorizes photothermal catalysis into three types: light-driven thermocatalysis, thermally enhanced photocatalysis, and photo-thermo coupling catalysis. Each category is analyzed, emphasizing mechanisms, performance factors, and the role of advanced materials such as plasmonic nanoparticles, semiconductors, and hybrid composites in enhancing light absorption, thermal distribution, and catalytic stability. Key challenges include achieving uniform thermal and photonic energy distributions within catalytic reactors and developing accurate performance evaluation metrics. Applications such as CO₂ reduction, ammonia synthesis, and plastic upcycling highlight the environmental and industrial relevance of this technology. The review identifies limitations and suggests innovations in materials design and energy-storing mechanisms to enable continuous catalytic processes. Future directions emphasize photothermal catalysis's potential to transform sustainable energy systems and advance green chemical production. This synthesis aims to guide research and foster practical adoption of photothermal technologies at an industrial scale.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"8 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992556","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
Gyro‐Multigrid Triboelectric Nanogenerator via Topological Defects Strategy for Efficiently Harvesting Low‐Grade Wave Energy
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-20 DOI: 10.1002/aenm.202405398
Wei Gao, Xiaobo Gao, Juan Su, Huisheng Cai, Hao Li, Baodong Chen, Zhong Lin Wang
{"title":"Gyro‐Multigrid Triboelectric Nanogenerator via Topological Defects Strategy for Efficiently Harvesting Low‐Grade Wave Energy","authors":"Wei Gao, Xiaobo Gao, Juan Su, Huisheng Cai, Hao Li, Baodong Chen, Zhong Lin Wang","doi":"10.1002/aenm.202405398","DOIUrl":"https://doi.org/10.1002/aenm.202405398","url":null,"abstract":"Wave energy is a promising sustainable energy yet to be fully exploited due to the low frequency and broad‐banded wave fields, so much so that difficult to capture, resulting in low efficiency and limited power output from current many wave energy harvesters. Here, a topological defect gyro‐multigrid triboelectric nanogenerator (TD‐GM‐TENG) is proposed that harnesses the mechanical energy of ocean waves to generate electricity and promotes the accumulation of triboelectric charge on the basis of realized from low to high rotation speed under the precession and gravitation acceleration effects. It benefited from topological defect strategy, TD‐GM‐TENG offers a charge transfer rate of 3.1 µC s<jats:sup>−1</jats:sup> that when can reach to a speed of nearly 1000 rpm at the wave frequency of 1 Hz. Furthermore, the charge density reaches 90 µC m<jats:sup>−</jats:sup><jats:sup>2</jats:sup> in a cycle of 0.06 s, which is 1.6 times higher than the same kind of spherical‐TENGs in the field of ocean energy harvesting. Finally, TD‐GM‐TENG unit outputs a peak power of 3.7 mW at the simulated water wave environment of 1 Hz and demonstrates its applicability and feasibility of being used as a distributed emergency power supply in the offshoring observation and early warning services.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"13 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142989798","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
Conversion–Lithiophilicity Hosts Toward Long-Term and High-Energy-Density Lithium Metal Batteries
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-20 DOI: 10.1002/aenm.202403576
Aoming Huang, Hongjiao Huang, Shaoxiong Li, Xiansong Pan, Ai-Yin Wang, Han-Yi Chen, Tao Wang, Linlin Li, Maxim Maximov, Jianwei Ren, Yuping Wu, Shengjie Peng
{"title":"Conversion–Lithiophilicity Hosts Toward Long-Term and High-Energy-Density Lithium Metal Batteries","authors":"Aoming Huang, Hongjiao Huang, Shaoxiong Li, Xiansong Pan, Ai-Yin Wang, Han-Yi Chen, Tao Wang, Linlin Li, Maxim Maximov, Jianwei Ren, Yuping Wu, Shengjie Peng","doi":"10.1002/aenm.202403576","DOIUrl":"https://doi.org/10.1002/aenm.202403576","url":null,"abstract":"Lithium metal anode emerges as an ideal candidate for the next generation of high-energy-density batteries. However, challenges persist in achieving high lithium utilization rates while maintaining the demands of high energy density and extended cycle life. In this work, a novel conversion–lithiophilicity strategy is proposed to regulate the longevity of high-energy-density batteries by injecting lithium ion activity. This strategy is validated through carbon nanofiber decorated with Fe<sub>3</sub>C and Fe<sub>2</sub>O<sub>3</sub> particles. The uniform metallic lithium deposition induced by lithiophilic Fe<sub>3</sub>C substrates has been verified through lithium deposition/stripping experiments and density functional theory calculations. The electrochemical active Fe<sub>2</sub>O<sub>3</sub> component supplies additional anodic capacity and suppress battery degradation, as demonstrated in lithium-ion storage research and three electrode system studies. When paired with LiFePO<sub>4</sub> cathodes at an N/P ratio of 2, the full battery showcases outstanding cycling stability over 300 cycles at 1C, with an exceptional energy density of 438 Wh kg<sup>−1</sup> (calculated based on the cathode material and lithium content). Furthermore, the full battery delivers rapid kinetics of 124 mAh g<sup>−1</sup> at 2C. The conversion–lithiophilicity strategy presented offers a promising avenue for the development of high-energy density and long-life lithium metal batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990524","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
Homogeneously Blended Donor and Acceptor AgBiS2 Nanocrystal Inks Enable High‐Performance Eco‐Friendly Solar Cells with Enhanced Carrier Diffusion Length
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-20 DOI: 10.1002/aenm.202404552
Hae Jeong Kim, Jin Young Park, Ye‐Jin Choi, Soo‐Kwan Kim, Taeyeong Yong, Wonjong Lee, Gayoung Seo, Eon Ji Lee, Seongmin Choi, Hyung Ryul You, Won‐Woo Park, Soojin Yoon, Wook Hyun Kim, Jongchul Lim, Younghoon Kim, Oh‐Hoon Kwon, Jongmin Choi
{"title":"Homogeneously Blended Donor and Acceptor AgBiS2 Nanocrystal Inks Enable High‐Performance Eco‐Friendly Solar Cells with Enhanced Carrier Diffusion Length","authors":"Hae Jeong Kim, Jin Young Park, Ye‐Jin Choi, Soo‐Kwan Kim, Taeyeong Yong, Wonjong Lee, Gayoung Seo, Eon Ji Lee, Seongmin Choi, Hyung Ryul You, Won‐Woo Park, Soojin Yoon, Wook Hyun Kim, Jongchul Lim, Younghoon Kim, Oh‐Hoon Kwon, Jongmin Choi","doi":"10.1002/aenm.202404552","DOIUrl":"https://doi.org/10.1002/aenm.202404552","url":null,"abstract":"Colloidal semiconductor nanocrystals (NCs) have garnered significant attention as promising photovoltaic materials due to their tunable optoelectronic properties enabled by surface chemistry. Among them, AgBiS<jats:sub>2</jats:sub> NCs stand out as an attractive candidate for solar cell applications due to their environmentally friendly composition, high absorption coefficients, and low‐temperature processability. However, AgBiS<jats:sub>2</jats:sub> NC photovoltaics generally exhibit lower power conversion efficiency (PCE) compared to other NC‐based devices, primarily due to numerous surface traps that serve as recombination sites, leading to a short diffusion length for free carriers. To address this challenge, this work develops donor and acceptor blended (D/A) AgBiS<jats:sub>2</jats:sub> films. Through ligand modulation, this work formulates acceptor and donor AgBiS<jats:sub>2</jats:sub> NC inks with suitable electrical band alignment for charge separation, while ensuring that they are fully miscible in the same solvent. This enabled the fabrication of high‐quality, thickness‐controllable D/A‐blended junction films. This work finds that this approach effectively facilitates carrier separation, leading to an enhanced carrier lifetime and diffusion length. As a result, using this approach, this work achieves AgBiS<jats:sub>2</jats:sub> films that are twice as thick in solar cell applications compared to conventional devices, leading to improvements in current density and a solar cell PCE of 8.26%.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"31 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142990338","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
Cu‐Driven Active Cu2Se@MXene Heterointerface Reconstruction and Co Electron Reservoir Toward Superior Sodium Storage
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-20 DOI: 10.1002/aenm.202405706
Chengxing Lu, Boyu Li, Mengjie Shi, Qun Li, Kun Liu, Cuiyun Lu, Jingwen Liao, Ziyue Hu, Xiaoyan Wei, Chunsheng Li, Yan Sun, Tong Liu, Ronghui Liu, Qing Zhao
{"title":"Cu‐Driven Active Cu2Se@MXene Heterointerface Reconstruction and Co Electron Reservoir Toward Superior Sodium Storage","authors":"Chengxing Lu, Boyu Li, Mengjie Shi, Qun Li, Kun Liu, Cuiyun Lu, Jingwen Liao, Ziyue Hu, Xiaoyan Wei, Chunsheng Li, Yan Sun, Tong Liu, Ronghui Liu, Qing Zhao","doi":"10.1002/aenm.202405706","DOIUrl":"https://doi.org/10.1002/aenm.202405706","url":null,"abstract":"Heterostructure engineering and active component reconstruction are effective strategies for efficient and rapid charge storage in advanced sodium‐ion batteries (SIBs). Herein, sandwich‐type CoSe<jats:sub>2</jats:sub>@MXene composites are used as a model to reconstruct new active Cu<jats:sub>2</jats:sub>Se@MXene heterostructures by in situ electrochemical driving. The MXene core provides interconnected pathways for electron and ion conduction, while also buffering volumetric expansion to stabilize the structure. This reconstructed Cu<jats:sub>2</jats:sub>Se@MXene heterointerface features abundant sodium storage active sites, enhanced Na<jats:sup>+</jats:sup> adsorption, and diffusion kinetics, thus increasing sodium storage capacity. Moreover, the elevated Co valence state during the discharge process allows it to act as an electron reservoir to provide additional electron supply for Cu<jats:sub>2</jats:sub>Se conversion and accelerate the sodium storage kinetics. When employed as an anode in SIBs, the CoSe<jats:sub>2</jats:sub>@MXene electrode exhibits high capacity (694 mAh g<jats:sup>−1</jats:sup> at 0.1 A g<jats:sup>−1</jats:sup>), excellent rate performance (425 mAh g<jats:sup>−1</jats:sup> at 20 A g<jats:sup>−1</jats:sup>), and exceptional durability (437 mAh g<jats:sup>−1</jats:sup> after 10 000 cycles at 5 A g<jats:sup>−1</jats:sup> with a 0.0014% capacity decay per cycle). The electrochemical reconstruction and sodium storage mechanism of Cu<jats:sub>2</jats:sub>Se@MXene anode is further revealed through ex situ characterization and theoretical calculations. This work provides a new approach for designing advanced conversion‐type anodes for SIBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"56 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142989799","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
Ethynyl‐Linked Donor–Acceptor Covalent Organic Framework for Highly Efficient Photocatalytic H2O2 Production
IF 27.8 1区 材料科学
Advanced Energy Materials Pub Date : 2025-01-20 DOI: 10.1002/aenm.202404497
Bowen Li, Junjin Chen, Kang Wang, Dongdong Qi, Tianyu Wang, Jianzhuang Jiang
{"title":"Ethynyl‐Linked Donor–Acceptor Covalent Organic Framework for Highly Efficient Photocatalytic H2O2 Production","authors":"Bowen Li, Junjin Chen, Kang Wang, Dongdong Qi, Tianyu Wang, Jianzhuang Jiang","doi":"10.1002/aenm.202404497","DOIUrl":"https://doi.org/10.1002/aenm.202404497","url":null,"abstract":"Photocatalytic H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> synthesis from H<jats:sub>2</jats:sub>O and O<jats:sub>2</jats:sub> is considered to be one of the most promising alternative approaches for manufacturing H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub>. Developing highly active and selective photocatalysts is of significant in achieving efficient H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> photosynthesis. Herein, an ethynyl‐linked donor–acceptor covalent organic framework (COF), named EBBT‐COF, is prepared from the condensation reaction between an electron‐deficient unit 4,4′,4″‐(1,3,5‐benzenetriyltri‐2,1‐ethynediyl)tris‐benzenamine and an electron‐rich unit benzo[1,2‐b:3,4‐b′:5,6‐b″]trithiophene‐2,5,8‐tricarboxaldehyde. Powder X‐ray diffraction and N<jats:sub>2</jats:sub> adsorption isotherm unveil the crystalline porous hcb network of EBBT‐COF with pores size centered at <jats:italic>ca</jats:italic>. 2.3 nm. Spectroscopic characterizations demonstrate the excellent visible‐light absorption capacity and enhanced photo‐induced charge separation and transport efficiency of EBBT‐COF owing to its donor–acceptor architecture. Density functional theory calculations and electrochemical tests indicate the high activity and selectivity of EBBT‐COF toward 2e<jats:sup>−</jats:sup> O<jats:sub>2</jats:sub> reduction reaction and 2e<jats:sup>−</jats:sup> water oxidation reaction with triethynylbenzene and trithiophene moieties to accelerate O<jats:sub>2</jats:sub>‐to‐H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> and H<jats:sub>2</jats:sub>O‐to‐H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> conversion, respectively. These merits enable EBBT‐COF to be a promising photocatalyst toward H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> generation from H<jats:sub>2</jats:sub>O and O<jats:sub>2</jats:sub> with a H<jats:sub>2</jats:sub>O<jats:sub>2</jats:sub> yield rate of 5 686 µmol g<jats:sup>−1</jats:sup> h<jats:sup>−1</jats:sup>, an optimal apparent quantum yield of 15.14%, a solar‐to‐chemical conversion efficiency of 1.17% (λ &gt; 400 nm), representing one of the best performance among COF‐based photocatalysts reported thus far.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"10 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142989796","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
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