Advanced Functional Materials最新文献_第6页

Volatile to Non-Volatile Switching Transition in Chalcogenides

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-30 DOI: 10.1002/adfm.202423940

Zihao Zhao, Mengfei Zhang, Qun Yang, Tamihiro Gotoh, Qingqin Ge, Nannan Shi, Yuting Sun, Jiayi Zhao, Yanping Sui, Ran Jiang, Haibin Yu, Stephen R. Elliott, Zhitang Song, Min Zhu

{"title":"Volatile to Non-Volatile Switching Transition in Chalcogenides","authors":"Zihao Zhao, Mengfei Zhang, Qun Yang, Tamihiro Gotoh, Qingqin Ge, Nannan Shi, Yuting Sun, Jiayi Zhao, Yanping Sui, Ran Jiang, Haibin Yu, Stephen R. Elliott, Zhitang Song, Min Zhu","doi":"10.1002/adfm.202423940","DOIUrl":"https://doi.org/10.1002/adfm.202423940","url":null,"abstract":"Over the past 60 years, three distinct electrical switching behaviors have been discovered in chalcogenides: ovonic threshold switch (OTS), ovonic memory switch (OMS), and phase-change switch (PCS). The first two have been successfully utilized in commercialized 3D Xpoint chips, serving as selector and memory cells, respectively. However, the relationships among these three behaviors remain unclear. Here, it is demonstrated that the Ge-Te binary system exhibits these three switching mechanisms. Specifically, the switching behavior transforms from PCS-like to OTS-like within the composition range from GeTe8 to GeTe6, while the shift from volatile (OTS) to non-volatile switching behavior (OMS) occurs between the compositions GeTe2 and GeTe. The PCS-to-OTS transition is primarily driven by enhancements in glass-forming ability, with the Turnbull parameter increasing from 0.58 to 0.6, and the crystallization temperature exceeding 145 °C, while the shift from OTS to OMS behavior is largely due to the significantly accelerated crystallization speed, from microseconds to nanoseconds. Most importantly, the GeTe16 PCS stands out, with a large ON current (0.6 mA), low leakage current (<2.5 × 10−8 A), high endurance (>6 × 109 cycles), and high-temperature back-end-of-line compatibility. The crystalline nature of this PCS material addresses the composition and toxicity issues in conventional OTS materials. Moreover, GeTe16 PCSs have been successfully integrated with GeTe OMSs, forming selector/memory arrays with a read margin of 0.4 V. These findings not only reveal the mechanisms underlying the volatile to non-volatile transition but also provide an alternative solution for high-density 3D memory, potentially replacing the OTS/OMS stack approach.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"36 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736857","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

Enhancing Oxygen Reduction Reaction in PdHx@Pt Metallenes: Unveiling the Impact of Ligand Beyond Strain Effect

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-30 DOI: 10.1002/adfm.202500522

Zhipeng Feng, Dongxu Jiao, Jinchang Fan, Yu Qiu, Xin Ge, Jiaqi Wang, Xiao Zhao, Wei Zhang, Lirong Zheng, Lei Zhang, Zhigen Yu, Weitao Zheng, Xiaoqiang Cui

{"title":"Enhancing Oxygen Reduction Reaction in PdHx@Pt Metallenes: Unveiling the Impact of Ligand Beyond Strain Effect","authors":"Zhipeng Feng, Dongxu Jiao, Jinchang Fan, Yu Qiu, Xin Ge, Jiaqi Wang, Xiao Zhao, Wei Zhang, Lirong Zheng, Lei Zhang, Zhigen Yu, Weitao Zheng, Xiaoqiang Cui","doi":"10.1002/adfm.202500522","DOIUrl":"https://doi.org/10.1002/adfm.202500522","url":null,"abstract":"Incorporating interstitial non-metal atoms within the crystal lattice of catalysts enables flexible modulation of their electronic structures and catalytic performances. However, the resulting induced tensile strain typically has a detrimental effect on oxygen reduction reaction (ORR) activity. In this study, a series of PdHx@Pt metallenes with varying H/Pd ratios, where hydrogen atoms precisely modulate the strain and ligand effects on the Pt skin surface is reported. Notably, PdH0.35@Pt metallenes exhibit an extraordinary half-wave potential of 0.933 V and a mass activity (MA) of 7.36 A mgPt−1 at 0.9 V vs reversible hydrogen electrode (RHE) for ORR, outperforming both Pd@Pt metallenes and commercial Pt/C catalysts. Control experiments and density functional theory (DFT) calculations reveal a competitive relationship between strain and ligand effects across different H/Pd ratios, with a dominant positive ligand effect overcoming the negative strain effect at an H/Pd ratio of 0.35. This electronic structure modulation leads to an increased 5d electron density of the surface Pt and a downshift in the eg* band center, thereby weakening the adsorption of oxygen intermediates on the Pt skin surface and resulting in excellent ORR activity.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"40 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737173","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

Multifunctional Conductive Polymer Modification for Efficient CO2 Electroreduction in Acidic Electrolyte

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202425636

Lina Su, Qingfeng Hua, Guang Feng, Yanan Yang, Hao Mei, Yulv Yu, Xiaoxia Chang, Zhiqi Huang

{"title":"Multifunctional Conductive Polymer Modification for Efficient CO2 Electroreduction in Acidic Electrolyte","authors":"Lina Su, Qingfeng Hua, Guang Feng, Yanan Yang, Hao Mei, Yulv Yu, Xiaoxia Chang, Zhiqi Huang","doi":"10.1002/adfm.202425636","DOIUrl":"https://doi.org/10.1002/adfm.202425636","url":null,"abstract":"Electrode-electrolyte interfacial modification by hydrophobic molecules represents a promising strategy for suppressing competing proton reduction in acidic electrocatalytic carbon dioxide reduction reactions (CO2RR), meanwhile sacrificing extra overpotential due to increased ohmic resistance. Herein, a multifunctional conductive polymer, polyaniline modified by p-aminobenzenesulfonic acid (ABSA-polyaniline), is constructed between Cu catalyst layer and electrolyte to simultaneously create an ideal microenvironment for CO2RR and enhance the charge transfer and ion transport processes at the electrochemical reaction interface. This polymer layer balances the local hydrophobicity, promotes CO2 adsorption and activation, and regulates the mass transport of K+, H+, and OH− ions, thus significantly enhancing the CO2RR kinetics in acidic medium, yielding a high Faraday efficiency (FE = 81%) for multicarbon products at 600 mA cm−2. More importantly, compared with commonly used hydrophobic molecules, the conductive nature of ABSA-PANI helps to reduce the ohmic resistance of the electrode, leading to notably lowered cathode overpotential at industrial-grade current density and improve cathode energy efficiency over a wide potential window. This work sheds light on the development of highly efficient acidic CO2RR systems, especially for those with low alkali cation concentrations and low CO2 concentrations.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"33 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723949","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

Ultrasound-Propelled Nanomotors Enable Activatable Near-Infrared-II Fluorescence Imaging-Guided Synergistic Oxygen-Independent and Oxygen-Dependent Sonodynamic Therapy of Atherosclerosis

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202503885

Zeyu Jiang, Chuang Wei, Shanglang Cai, Qinrui Fu

{"title":"Ultrasound-Propelled Nanomotors Enable Activatable Near-Infrared-II Fluorescence Imaging-Guided Synergistic Oxygen-Independent and Oxygen-Dependent Sonodynamic Therapy of Atherosclerosis","authors":"Zeyu Jiang, Chuang Wei, Shanglang Cai, Qinrui Fu","doi":"10.1002/adfm.202503885","DOIUrl":"https://doi.org/10.1002/adfm.202503885","url":null,"abstract":"Sonodynamic therapy (SDT) holds great promise as a therapeutic approach for treating atherosclerotic plaque. However, the therapeutic efficacy of SDT is hindered by the restricted tissue penetration depth and insufficient generation of reactive oxygen species (ROS) associated with conventional sonosensitizers. Furthermore, determining the optimal timing for ultrasound (US) irradiation after the administration of sonosensitizers presents a significant technical challenge. Addressing these issues is crucial for enhancing the effectiveness of SDT. Herein, a hyaluronic acid-modified US-propelled Janus mesoporous SiO2 partially coated gold nanorods loaded with 2,2-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride (AIPH) is developed, along with functionalized Ag/Ag2S nanoparticles (HA-JASAA), for near-infrared-II (NIR-II) fluorescence imaging-guided SDT of atherosclerotic plaque. Following intravenous administration of HA-JASAA, the hyaluronic acid modification enables specific targeting of proinflammatory macrophages within atherosclerotic plaques. Subsequently, upon reacting with H2O2 in the atherosclerotic microenvironment, it turns on the NIR-II fluorescence signal. US irradiation is applied when the intensity of NIR-II fluorescence signal reaches its peak; AIPH loaded in HA-JASAA undergoes conversion into nitrogen propelling the HA-JASAA toward deep penetration into plaque tissue. Furthermore, under US activation, two sonosensitizers, AIPH and Ag2S, generate oxygen-independent and oxygen-dependent ROS respectively to induce apoptosis of lesional macrophages, thereby significantly inhibiting the progression of atherosclerotic plaque.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"183 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723700","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 Bionic Grooving All-Cementitious-Dielectric Metastructure with Unprecedented Wide-Angle Broadband Electromagnetic Wave Absorption Properties

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202425949

Xiaoran Wang, Qinghua Li, Haoxin Lai, Yu Peng, Chunying Hou, Shilang Xu

{"title":"A Bionic Grooving All-Cementitious-Dielectric Metastructure with Unprecedented Wide-Angle Broadband Electromagnetic Wave Absorption Properties","authors":"Xiaoran Wang, Qinghua Li, Haoxin Lai, Yu Peng, Chunying Hou, Shilang Xu","doi":"10.1002/adfm.202425949","DOIUrl":"https://doi.org/10.1002/adfm.202425949","url":null,"abstract":"The absorption performance of electromagnetic (EM) wave absorbing materials deteriorates sharply at large incident angles, particularly at angles exceeding 50°. To overcome this challenge, this study proposes a bionic grooving all-cementitious-dielectric metastructure (ACDMS), yielding more than 34.6 GHz effective absorption bandwidth (EAB) over 0°–60° incident angles without any absorbing agent. The effects of structural design, geometric parameters, and incident angles on the EM response and absorption performance are investigated by numerical simulations and experimental characterizations. It is found that the ACDMS enables multiple absorption mechanisms under various incident angles, including electric field redistribution, multi-axis interference, surface wave excitation, and multiple diffraction/scattering pathways. Experimental results demonstrate that at 60° incident angle, the absorption performance of the ACDMS even exceeds that at normal incidence, achieving a relative EAB of 163%, a -20 dB (99% absorption) bandwidth of 33.4 GHz, and a mean reflectivity of −23.4 dB in 1–40 GHz range. The RCS simulation and environmental testing across fluctuating humidity (40%–80%) and temperature (10–220 °C) exposures underscore the exceptional potential for practical applications and harsh environmental conditions. The combination of innovative absorption mechanisms, environmental adaptability and a convenient cement-based manufacturing process establishes the ACDMS as a promising candidate for next-generation EM wave absorbers.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"72 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723701","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

GeSe Nanosheets-Mediated Local Sonocatalytic Immunosuppression of Rheumatoid Arthritis

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202420195

Lingting Zeng, Bin Zhao, Danyang Chen, Chao Xia, Qianjun He

{"title":"GeSe Nanosheets-Mediated Local Sonocatalytic Immunosuppression of Rheumatoid Arthritis","authors":"Lingting Zeng, Bin Zhao, Danyang Chen, Chao Xia, Qianjun He","doi":"10.1002/adfm.202420195","DOIUrl":"https://doi.org/10.1002/adfm.202420195","url":null,"abstract":"The first-line systemic administration of anti-rheumatic immunosuppressants unavoidably causes adverse effects such as the increase in the risk of infection. While the emergence of local drug delivery for rheumatoid arthritis (RA) therapy can effectively reduce systemic adverse effects, persistent RA therapy remains challenging. In this work, a local sonocatalytic immunosuppression strategy for persistent RA therapy without the use of traditional immunosuppressants is proposed, and develop GeSe nanosheets (GSN) with a high piezoelectric coefficient and a wide bandgap to realize efficient sonocatalytic H2 production and lactic acid (LA) consumption within the articular cavity for combined immunosuppression, which restrains the deteriorate of RA. Mechanistically, locally generated H2 inhibits the intraarticular levels of proinflammatory cytokines TNF-α, IFN-γ and receptor activator of nuclear factor-κB ligand (RANKL) by preventing the conversion of Th0 cells to Th1 cells, and consequently blocks the differentiation of macrophages into activated osteoclasts and the osteoclastic expression of LA. At the same time, sonocatalytic oxidation/consumption of LA eradicates the corrosion of LA to bone and cartilage. The proposed sonocatalytic immunosuppression strategy precedes photocatalysis owing to remarkably higher tissue penetrability of ultrasound than light and will open a window to realize efficient treatment of deep-seated immune-related diseases.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"30 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734285","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

Laser-Induced Ultrafine Cu-Anchored 3D CNT-rGO Carrier for Flexible and Durable Zinc-Iodine Micro-Batteries

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202502268

Xiangyu Wang, Yubing Sun, Qiang Wang, Lijun Tang, Hui Wang, Tiansheng Mu, Yongchao Zhang, Xiaodong Zhu, Jian Gao

{"title":"Laser-Induced Ultrafine Cu-Anchored 3D CNT-rGO Carrier for Flexible and Durable Zinc-Iodine Micro-Batteries","authors":"Xiangyu Wang, Yubing Sun, Qiang Wang, Lijun Tang, Hui Wang, Tiansheng Mu, Yongchao Zhang, Xiaodong Zhu, Jian Gao","doi":"10.1002/adfm.202502268","DOIUrl":"https://doi.org/10.1002/adfm.202502268","url":null,"abstract":"Three-dimensional (3D) carbon materials are often used as carriers for anchoring iodine in zinc-iodine batteries (ZIBs). However, the physical stacking of carbon materials during the electrode assembly process, the weaker physical interactions between non-polar carbon materials and iodine species, and the scarcity of catalytic sites for iodine conversion led to a reduced catalytic activity for the iodine redox reaction, which fails to completely inhibit the shuttling of iodine species. Here, 3D ultrafine Cu-anchored CNT-rGO carriers (3D Cu@CNT-rGO) with interconnected structures are prepared using a simple laser-induced reduction strategy. The 3D microporous structure and excellent electrical conductivity of 3D Cu@CNT-rGO make it an ideal host for iodine. Ultrafine Cu nanoparticles introduce as catalysts accelerate the redox kinetics, efficiently catalyze iodine/polyiodide conversion, inhibit polyiodide shuttling, and enhance the electrochemical performance of ZIBs. The fabricated zinc-iodide micro-batteries (ZIMBs) delivers a high specific area capacity of 1.29 mAh cm−2, a high area energy density (1.55 mWh cm−2) and a high area power density (33.58 mW cm−2) as well as excellent cyclin stability (80% capacity retention after 4000 cycles). Meanwhile, ZIMBs have excellent mechanical flexibility and have great potential for application in the field of integrated, miniaturized and flexible electronic devices.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"22 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734287","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

Multifunctional Superparamagnetic Copper Iron Oxide Nanoparticles for Synergistic Cancer Therapy via Magnetic Hyperthermia, Oxidative Stress and Immune Reprogramming

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202425286

Yuxin Cai, Xuejia Kang, Lang Zhou, Shuai Wu, Chuanyu Wang, Siqi Wu, Chunghui Huang, Qi Wang, Ya Chang, R. Jayachandra Babu, Pengyu Chen

{"title":"Multifunctional Superparamagnetic Copper Iron Oxide Nanoparticles for Synergistic Cancer Therapy via Magnetic Hyperthermia, Oxidative Stress and Immune Reprogramming","authors":"Yuxin Cai, Xuejia Kang, Lang Zhou, Shuai Wu, Chuanyu Wang, Siqi Wu, Chunghui Huang, Qi Wang, Ya Chang, R. Jayachandra Babu, Pengyu Chen","doi":"10.1002/adfm.202425286","DOIUrl":"https://doi.org/10.1002/adfm.202425286","url":null,"abstract":"Aggressive cancers, characterized by high metastatic potential and resistance to conventional therapies, present a significant challenge in oncology. Current treatments often fail to effectively target metastasis, recurrence, and the immunosuppressive tumor microenvironment, while causing significant off-target toxicity. Here, superparamagnetic copper iron oxide nanoparticles (SCIONs) as a multifunctional platform that integrates magnetic hyperthermia therapy, immune modulation, and targeted chemotherapeutic delivery, aiming to provide a more comprehensive cancer treatment is presented. Specifically, SCIONs generate localized hyperthermia under an alternating magnetic field while delivering a copper-based anticancer agent, resulting in a synergistic anticancer effect. The hyperthermia induced by SCIONs caused ER stress and ROS production, leading to significant tumor cell death, while the copper complex further enhanced oxidative stress, ferroptosis, and apoptosis. Beyond direct cytotoxicity, SCIONs disrupted the tumor microenvironment by inhibiting cancer-associated fibroblasts, downregulating epithelial-mesenchymal transition markers, and reducing cell migration and invasion, thereby limiting metastasis. Additionally, SCION-based therapy reprogrammed the immune microenvironment by inducing immunogenic cell death and enhancing dendritic cell activation, resulting in increased CD8+ T cell infiltration and amplified antitumor immunity. This integrated approach targets primary and metastatic tumors while mitigating immunosuppression, offering a promising next-generation therapy for combating cancer with enhanced efficacy and reduced side effects.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"33 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734290","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

Unveiling the Role of Cesium in Halide Perovskite Single Crystal for Stable and Ultrasensitive X-Ray Detection

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202504203

Naiming Liu, Depeng Chu, Xiaoqiong Xin, Jingyun Tian, Yujia Jiang, Nan Liang, Binxia Jia, Yucheng Liu, Shengzhong (Frank) Liu

{"title":"Unveiling the Role of Cesium in Halide Perovskite Single Crystal for Stable and Ultrasensitive X-Ray Detection","authors":"Naiming Liu, Depeng Chu, Xiaoqiong Xin, Jingyun Tian, Yujia Jiang, Nan Liang, Binxia Jia, Yucheng Liu, Shengzhong (Frank) Liu","doi":"10.1002/adfm.202504203","DOIUrl":"https://doi.org/10.1002/adfm.202504203","url":null,"abstract":"Metal halide perovskites have been demonstrated to be the promising X-ray detection materials, among which MAPbI3 is expected for high-performance large-area X-ray detector integration due to its strong X-ray absorption and solution processible at low temperature for industrial-grade large-size single crystal (SC). However, the commercial viability of MAPbI3 SC X-ray detectors remains challenging due to its poor intrinsic stability, large dark current, and significant ion migration. Herein, inorganic Cs+ ions are designed to incorporate into the MAPbI3 SC and the effects of Cs+ on crystal structure, defect state, band structure, ion migration, and carrier transport in the SCs are systematically unveiled. The experimental results show that the incorporation of Cs+ ion reduces defect density, inhibits ion migration, improves carrier mobility, and increases resistivity. Therefore, detectors fabricated on the SC with Cs+ ions show high detection sensitivity of 49847 µC Gy−1 cm−2, low detection limit of 3.1 nGy s−1, short response raise time of 150 µs, and superior long-term operating stability under continuous X-ray irradiation and bias. The rare combination of these figure of merits enables the detector to achieve high-definition X-ray imaging, confirming that this work provides a new strategy for designing stable and sensitive X-ray detectors.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"183 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734284","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

High Entropy Metal Phosphide Activated Fluorinated Carbon as Electroactive Host for Extra High Cathode Capacity in Lithium–Sulfur Batteries

IF 19 1区材料科学

Advanced Functional Materials Pub Date : 2025-03-28 DOI: 10.1002/adfm.202502090

Rui Gao, Yating Zhang, Peng Chen, Tianying Yan, Xueping Gao

{"title":"High Entropy Metal Phosphide Activated Fluorinated Carbon as Electroactive Host for Extra High Cathode Capacity in Lithium–Sulfur Batteries","authors":"Rui Gao, Yating Zhang, Peng Chen, Tianying Yan, Xueping Gao","doi":"10.1002/adfm.202502090","DOIUrl":"https://doi.org/10.1002/adfm.202502090","url":null,"abstract":"Lithium–sulfur (Li–S) batteries are one of the most promising high-energy battery systems due to the high theoretical energy density (2600 Wh kg−1). However, a large proportion of electro-inert host materials are typically employed in cathode composites, which severely reduces the practical performance of Li–S batteries. In this study, a novel approach is proposed using fluorinated activated carbon (CF) as an electroactive host of sulfur for the first time, which can release extra capacity during the initial operation. Specifically, with the activation effect of in situ deposited high entropy metal phosphide (HEP) catalyst Pd0.34Sn0.15Ni0.05Co0.09Cu0.29P0.08, the extra capacity of the HEP/CF host is almost 1.5 times higher than pristine CF. Consequently, the S/HEP/CF cathode exhibits high initial discharge capacity (1059.2 mAh g−1−composite at 0.1C), high rate performance (476.5 mAh g−1−composite at 2C) and long-term cycling stability. Moreover, the as-prepared cathode retains high initial discharge capacity of 492.6 mAh g−1−composite under harsh conditions (sulfur loading of 3.2 mg cm−2 and lean electrolyte/sulfur ratio of 10 µL mg−1). This work demonstrates a new strategy for designing electroactive sulfur hosts to improve the performance of Li–S batteries.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"31 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734289","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