Energy & Environmental Materials最新文献_第3页

Lithium Diffusion-Efficient Ionogels as Polymer Solid Electrolyte for Next-Gen Lithium-Ion Batteries 将锂扩散效率高的离子凝胶作为下一代锂离子电池的聚合物固体电解质

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-08-01 DOI: 10.1002/eem2.12811

Boluwatife Igbaroola, Yassine Eddahani, Patrick Howlett, Maria Forsyth, Luke O'Dell, Nicolas Dupré, Jean Le Bideau

{"title":"Lithium Diffusion-Efficient Ionogels as Polymer Solid Electrolyte for Next-Gen Lithium-Ion Batteries","authors":"Boluwatife Igbaroola, Yassine Eddahani, Patrick Howlett, Maria Forsyth, Luke O'Dell, Nicolas Dupré, Jean Le Bideau","doi":"10.1002/eem2.12811","DOIUrl":"https://doi.org/10.1002/eem2.12811","url":null,"abstract":"The search for safer next-generation lithium-ion batteries (LIBs) has driven significant research on non-toxic, non-flammable solid electrolytes. However, their electrochemical performance often falls short. This work presents a simple, one-step photopolymerization process for synthesizing biphasic liquid–solid ionogel electrolytes using acrylic acid monomer and P111i4FSI ionic liquid. We investigated the impact of lithium salt concentration and temperature on ion diffusion, particularly lithium-ion (Li+) mobility, within these ionogels. Pulsed-field gradient nuclear magnetic resonance (PFG-NMR) revealed enhanced Li+ diffusion in the acrylic acid (AA)-based ionogels compared to their non-confined ionic liquid counterparts. Remarkably, Li+ diffusion remained favorable in the ionogels regardless of salt concentration. These AA-based ionogels demonstrate very good ionic conductivity (>1 mS cm−1 at room temperature) and a wide electrochemical window (up to 5.3 V vs Li+/Li0). These findings suggest significant promise for AA-based ionogels as polymer solid electrolytes in future solid-state battery applications.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"70 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Bifunctionally Hydrophobic MOF-Supported Platinum Catalyst for the Removal of Ultralow Concentration Hydrogen Isotope 用于去除超低浓度氢同位素的双功能疏水 MOF 支持铂催化剂

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-31 DOI: 10.1002/eem2.12815

Huiryung Heo, Jeong-un Jang, Euna Jeong, Hyung-Ju Kim, Young Jin Kim, Chan Woo Park, Jungseob So, Dong-Yeun Koh

{"title":"Bifunctionally Hydrophobic MOF-Supported Platinum Catalyst for the Removal of Ultralow Concentration Hydrogen Isotope","authors":"Huiryung Heo, Jeong-un Jang, Euna Jeong, Hyung-Ju Kim, Young Jin Kim, Chan Woo Park, Jungseob So, Dong-Yeun Koh","doi":"10.1002/eem2.12815","DOIUrl":"https://doi.org/10.1002/eem2.12815","url":null,"abstract":"Water often presents significant challenges in catalysts by deactivating active sites, poisoning the reaction, and even degrading composite structure. These challenges are amplified when the water participates as a reactant and is fed as a liquid phase, such as trickle bed-type reactors in a hydrogen-water isotope exchange (HIE) reaction. The key balance in such multiphase reactions is the precise control of catalyst design to repel bulk liquid water while diffusing water vapor. Herein, a platinum-incorporated metal-organic framework (MIL-101) based bifunctional hydrophobic catalyst functionalized with long alkyl chains (C12, dodecylamine) and further manufactured with poly(vinylidene fluoride), Pt@MIL-101-12/PVDF, has been developed which can show dramatically improved catalytic activity under multi-phase reactions involving hydrogen gas and liquid water. Pt@MIL-101-12/PVDF demonstrates enhanced macroscopic water-blocking properties, with a notable reduction of over 65% in water adsorption capacity and newly introduced liquid water repellency, while exhibiting a negligible increase in mass transfer resistance, i.e., bifunctional hydrophobicity. Excellent catalytic activity, evaluated via HIE reaction, and its durability underscore the impact of bifunctional hydrophobicity. In situ DRIFTS analysis elucidates water adsorption/desorption dynamics within the catalyst composite, highlighting reinforced water diffusion at the microscopic level, affirming the catalyst's bifunctionality in different length scales. With demonstrated radiation resistance, Pt@MIL-101-12/PVDF emerges as a promising candidate for isotope exchange reactions.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"298 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mass Produced Flexible Aramid Electrodes Via Delamination of Layered Aerogels for Cut-to-Fit Wearable Zinc–Air Batteries Encased in Aramid Protection 通过层状气凝胶的分层技术批量生产柔性芳纶电极，用于包裹在芳纶保护层中的可穿戴锌-空气电池的切割-贴合

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-31 DOI: 10.1002/eem2.12804

Seung Hee Park, Sin Yeong Jang, Sung Hoon Ahn

{"title":"Mass Produced Flexible Aramid Electrodes Via Delamination of Layered Aerogels for Cut-to-Fit Wearable Zinc–Air Batteries Encased in Aramid Protection","authors":"Seung Hee Park, Sin Yeong Jang, Sung Hoon Ahn","doi":"10.1002/eem2.12804","DOIUrl":"https://doi.org/10.1002/eem2.12804","url":null,"abstract":"This study introduces a cut-to-fit methodology for customizing bulk aramid aerogels into form factors suitable for wearable energy storage. Owing to strong intercomponent bonds within aramid-based building blocks, it is possible to delaminate layered bulk aerogel into flexible and thinner sheets, enabling efficient mass production. This process allows for precise customization of aerogel dimensions, shape, and elasticity, ensuring high resilience to deformation along with excellent thermal and impact resistance. Incorporation of conductive carbon nanotubes on the surface significantly enhances electrical conductivity and multi-catalytic activity while retaining the inherent advantages of aramids. These advancements facilitate the use of flexible and conductive electrodes as air cathodes in solid-state zinc–air batteries (ZABs), which demonstrate superior cyclic performance and lifecycles exceeding 160 h. Furthermore, aramid-based packaging provides superior protection for pouch-type ZABs, ensuring a consistent power supply even in severe conditions. These batteries are capable of withstanding structural deformations and absorbing physical and thermal shocks, such as impacts and exposure to fire. Moreover, the innovative reassembly of custom-cut single-pouch cells into battery modules allows for enhanced power output, tailored to wearable applications. This highlights the potential of the technology for a wide array of wearable devices requiring dependable energy sources in demanding environments.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"10 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Harnessing the Power of PM6:Y6 Semitransparent Photoanodes by Computational Balancement of Photon Absorption in Photoanode/Photovoltaic Organic Tandems: >7 mA cm−2 Solar Synthetic Fuels Production at Bias-Free Potentials 通过计算光阳极/光伏有机串中的光子吸收平衡，利用 PM6:Y6 半透明光阳极的能量：无偏电位下 >7 mA cm-2 太阳能合成燃料的生产

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-31 DOI: 10.1002/eem2.12809

Francisco Bernal-Texca, Emmanouela Andrioti, Jordi Martorell, Carles Ros

{"title":"Harnessing the Power of PM6:Y6 Semitransparent Photoanodes by Computational Balancement of Photon Absorption in Photoanode/Photovoltaic Organic Tandems: >7 mA cm−2 Solar Synthetic Fuels Production at Bias-Free Potentials","authors":"Francisco Bernal-Texca, Emmanouela Andrioti, Jordi Martorell, Carles Ros","doi":"10.1002/eem2.12809","DOIUrl":"https://doi.org/10.1002/eem2.12809","url":null,"abstract":"This study first demonstrates the potential of organic photoabsorbing blends in overcoming a critical limitation of metal oxide photoanodes in tandem modules: insufficient photogenerated current. Various organic blends, including PTB7-Th:FOIC, PTB7-Th:O6T-4F, PM6:Y6, and PM6:FM, were systematically tested. When coupled with electron transport layer (ETL) contacts, these blends exhibit exceptional charge separation and extraction, with PM6:Y6 achieving saturation photocurrents up to 16.8 mA cm−2 at 1.23 VRHE (oxygen evolution thermodynamic potential). For the first time, a tandem structure utilizing organic photoanodes has been computationally designed and fabricated and the implementation of a double PM6:Y6 photoanode/photovoltaic structure resulted in photogenerated currents exceeding 7 mA cm−2 at 0 VRHE (hydrogen evolution thermodynamic potential) and anodic current onset potentials as low as −0.5 VRHE. The herein-presented organic-based approach paves the way for further exploration of different blend combinations to target specific oxidative reactions by selecting precise donor/acceptor candidates among the multiple existing ones.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"15 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced Structure/Interfacial Properties of Single-Crystal Ni-Rich LiNi0.92Co0.04Mn0.04O2 Cathodes Synthesized Via LiCl-NaCl Molten-Salt Method 通过氯化锂-氯化钠熔盐法合成的单晶富镍钴酸锂 Ni0.92Co0.04Mn0.04O2 阴极的增强结构/界面特性

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-29 DOI: 10.1002/eem2.12778

Ye-Wan Yoo, Chea-Yun Kang, Hyun-Kyung Kim, Jong-Kyu Lee, Ramachandran Vasant Kumar, Kyong-Nam Kim, Jung-Rag Yoon, Seung-Hwan Lee

{"title":"Enhanced Structure/Interfacial Properties of Single-Crystal Ni-Rich LiNi0.92Co0.04Mn0.04O2 Cathodes Synthesized Via LiCl-NaCl Molten-Salt Method","authors":"Ye-Wan Yoo, Chea-Yun Kang, Hyun-Kyung Kim, Jong-Kyu Lee, Ramachandran Vasant Kumar, Kyong-Nam Kim, Jung-Rag Yoon, Seung-Hwan Lee","doi":"10.1002/eem2.12778","DOIUrl":"https://doi.org/10.1002/eem2.12778","url":null,"abstract":"Arising from the increasing demand for electric vehicles (EVs), Ni-rich LiNixCoyMnzO2 (NCM, x + y + z = 1, x ≥ 0.8) cathode with greatly increased energy density are being researched and commercialized for lithium-ion batteries (LIBs). However, parasitic crack formation during the discharge–charge cycling process remains as a major degradation mechanism. Cracking leads to increase in the specific surface area, loss of electrical contact between the primary particles, and facilitates liquid electrolyte infiltration into the cathode active material, accelerating capacity fading and decrease in lifetime. In contrast, Ni-rich NCM when used as a single crystal exhibits superior cycling performances due to its rigid mechanical property that resists cracking during long charge–discharge process even under harsh conditions. In this paper, we present comparative investigation between single crystal Ni-rich LiNi0.92Co0.04Mn0.04O2 (SC) and polycrystalline Ni-rich LiNi0.92Co0.04Mn0.04O2 (PC). The relatively improved cycling performances of SC are attributed to smaller anisotropic volume change, higher reversibility of phase transition, and resistance to crack formation. The superior properties of SC are demonstrated by in situ characterization and battery tests. Consequently, it is inferred from the results obtained that optimization of preparation conditions can be regarded as a key approach to obtain well crystallized and superior electrochemical performances.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"1127 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Homogenous Microporous Thin Films Assembled Using Discrete Metal–Organic Polyhedra 利用离散金属有机多面体组装的同质微孔薄膜

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-25 DOI: 10.1002/eem2.12805

Soyeon Ko, UnJin Ryu, Ho Yeon Yoo, Jeeyoung Shin, Kyung Min Choi, Dong Gyu Park, Won Ho Choi

{"title":"Homogenous Microporous Thin Films Assembled Using Discrete Metal–Organic Polyhedra","authors":"Soyeon Ko, UnJin Ryu, Ho Yeon Yoo, Jeeyoung Shin, Kyung Min Choi, Dong Gyu Park, Won Ho Choi","doi":"10.1002/eem2.12805","DOIUrl":"https://doi.org/10.1002/eem2.12805","url":null,"abstract":"Homogeneous films with tailored microporous structures are crucial for several applications; however, fabricating such films presents significant challenges. This is primarily because most microporous materials have crystal sizes in the nano- and micrometer ranges, which inevitably generates intergranular spaces in the films, thereby complicating the fabrication of these thin films. In this study, functionalized metal–organic polyhedra (MOPs) are used as discrete microporous units and assembled into homogenous microporous films. The generation of intergranular spaces is avoided while controlling packing parameters and film thicknesses. Initially, the MOP units, influenced by van der Waals forces between carbon chains of functionalized adipic acids, display an affinity to form spindle-shaped blocks and islands. As the MOP concentration increases, these structures self-assembled into a hexagonally packed structure with an in-plane orientation and a maximum stacking of two layers of MOPs. By contrast, un-functionalized MOPs form a disordered film structure owing to random agglomeration. Evidently, functionalized adipic acid influences the orientation of the MOP network films with uniformly distributed micropores, effectively preventing the formation of intergranular spaces. Additionally, formaldehyde adsorption and desorption experiments revealed that the MOP network films possess superior adsorption and desorption capacities. The proposed approach signifies a breakthrough in the fabrication of homogenous microporous films.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"175 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141772353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Molecular Engineering of Benzobisoxazole-Based Conjugated Polymers for High-Performance Organic Photodetectors and Fingerprint Image Sensors 用于高性能有机光电探测器和指纹图像传感器的苯并异噁唑基共轭聚合物的分子工程学研究

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-24 DOI: 10.1002/eem2.12806

Cheol Shin, WonJo Jeong, Ezgi Darici Lee, Jong Baek Park, Hyungju Ahn, Seyeon Baek, Myeong In Kim, Dae Sung Chung, Kang-Il Seo, In Hwan Jung

{"title":"Molecular Engineering of Benzobisoxazole-Based Conjugated Polymers for High-Performance Organic Photodetectors and Fingerprint Image Sensors","authors":"Cheol Shin, WonJo Jeong, Ezgi Darici Lee, Jong Baek Park, Hyungju Ahn, Seyeon Baek, Myeong In Kim, Dae Sung Chung, Kang-Il Seo, In Hwan Jung","doi":"10.1002/eem2.12806","DOIUrl":"https://doi.org/10.1002/eem2.12806","url":null,"abstract":"Various novel conjugated polymers (CPs) have been developed for organic photodetectors (OPDs), but their application to practical image sensors such as X-ray, R/G/B, and fingerprint sensors is rare. In this article, we report the entire process from the synthesis and molecular engineering of novel CPs to the development of OPDs and fingerprint image sensors. We synthesized six benzo[1,2-d:4,5-d']bis(oxazole) (BBO)-based CPs by modifying the alkyl side chains of the CPs. Several relationships between the molecular structure and the OPD performance were revealed, and increasing the number of linear octyl side chains on the conjugated backbone was the best way to improve Jph and reduce Jd in the OPDs. The optimized CP demonstrated promising OPD performance with a responsivity (R) of 0.22 A/W, specific detectivity (D*) of 1.05 × 1013 Jones at a bias of −1 V, rising/falling response time of 2.9/6.9 μs, and cut-off frequency (f-3dB) of 134 kHz under collimated 530 nm LED irradiation. Finally, a fingerprint image sensor was fabricated by stacking the POTB1-based OPD layer on the organic thin-film transistors (318 ppi). The image contrast caused by the valleys and ridges in the fingerprints was obtained as a digital signal.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"43 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Nanosheet-Doped Polymer Composites with High Intrinsic Piezoelectric Properties for Energy Harvesting 用于能量收集的具有高固有压电特性的纳米片掺杂聚合物复合材料

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-21 DOI: 10.1002/eem2.12789

Kaihang Zhang, Jiaqi Lu, Xinyu Cai, Muhammad Naeem Shah, Jianhui Wu, Jie Li, Yifan Wu, Chi Zhang, Liangquan Xu, Haoze Kuang, Dinku Hazarika, Binghan Zhou, Zhuo Chen, Zhen Cao, Hao Jin, Shurong Dong, Yuhui Huang, Qilong Zhang, Yongjun Wu, Luigi Giuseppe Occhipinti, Tawfique Hasan, Jikui Luo

{"title":"Nanosheet-Doped Polymer Composites with High Intrinsic Piezoelectric Properties for Energy Harvesting","authors":"Kaihang Zhang, Jiaqi Lu, Xinyu Cai, Muhammad Naeem Shah, Jianhui Wu, Jie Li, Yifan Wu, Chi Zhang, Liangquan Xu, Haoze Kuang, Dinku Hazarika, Binghan Zhou, Zhuo Chen, Zhen Cao, Hao Jin, Shurong Dong, Yuhui Huang, Qilong Zhang, Yongjun Wu, Luigi Giuseppe Occhipinti, Tawfique Hasan, Jikui Luo","doi":"10.1002/eem2.12789","DOIUrl":"https://doi.org/10.1002/eem2.12789","url":null,"abstract":"Few-layer nanosheets (NSs) of hexagonal boron nitride (h-BN) and molybdenum disulfide (MoS2) display notable piezoelectric properties. Yet, their integration into polymers typically yields non-piezoelectric composites due to NSs' random distribution. We introduce a facile method for fabricating intrinsic piezoelectric composites incorporated with NSs without electric poling. Our innovative process aligns NSs within polyvinyl alcohol polymer, leveraging ice-water interfacial tension, water crystallization thrust, and directional cross-linking during freezing. The resulting PE composites exhibit a maximum piezoelectric coefficient of up to 25.5–28.4 pC N−1, comparable to polyvinylidene difluoride (PVDF), with significant cost-efficiency, safety, and scalability advantages over conventional materials. Using this composite, we develop highly sensitive wearable pressure and strain sensors, and an ultrasound energy harvester. These sensors detect finger bending and differentiate between walking and running, while the harvester generates ~1.18 V/2.31 μA under 1 W cm−2 ultrasound input underwater. This universal method offers a novel manufacturing technique for piezoelectric composites, demonstrating remarkable effectiveness in synthesizing intrinsic piezoelectric composites based on 2D materials. Moreover, its potential extends to applications in wearable electronics and energy harvesting, promising significant advancements in these fields.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"5 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141754060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 GeI2-Assisted Oriented Growth of Perovskite Crystallite for High-Performance Flexible Sn Perovskite Solar Cells 揭示 GeI2 辅助下的包晶石定向生长，实现高性能柔性锡包晶石太阳能电池

IF 15 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-15 DOI: 10.1002/eem2.12791

Huagui Lai, Selina Olthof, Shengqiang Ren, Radha K. Kothandaraman, Matthias Diethelm, Quentin Jeangros, Roland Hany, Ayodhya N. Tiwari, Dewei Zhao, Fan Fu

{"title":"Unveiling the GeI2-Assisted Oriented Growth of Perovskite Crystallite for High-Performance Flexible Sn Perovskite Solar Cells","authors":"Huagui Lai, Selina Olthof, Shengqiang Ren, Radha K. Kothandaraman, Matthias Diethelm, Quentin Jeangros, Roland Hany, Ayodhya N. Tiwari, Dewei Zhao, Fan Fu","doi":"10.1002/eem2.12791","DOIUrl":"https://doi.org/10.1002/eem2.12791","url":null,"abstract":"Tin perovskites are emerging as promising alternatives to their lead-based counterparts for high-performance and flexible perovskite solar cells. However, their rapid crystallization often leads to inadequate film quality and poor device performance. In this study, the role of GeI2 as an additive is investigated for controlling the nucleation and crystallization processes of formamidinium tin triiodide (FASnI3). The findings reveal the preferential formation of a Ge-rich layer at the bottom of the perovskite film upon the introduction of GeI2. It is proposed that the initial formation of the Ge complex acts as a crystallization regulator, promoting oriented growth of subsequent FASnI3 crystals and enhancing overall crystallinity. Through the incorporation of an optimal amount of GeI2, flexible Sn perovskite solar cells with an efficiency of 10.8% were achieved. Furthermore, it was observed that the GeI2 additive ensures a remarkable shelf-life for the devices, with the rigid cells retaining 91% of their initial performance after more than 13 800 h of storage in an N2 gas environment. This study elucidates the mechanistic role of GeI2 in regulating the nucleation and crystallization process of tin perovskites, providing valuable insights into the significance of additive engineering for the development of high-performance flexible tin perovskite solar cells.","PeriodicalId":11554,"journal":{"name":"Energy & Environmental Materials","volume":"6 1","pages":""},"PeriodicalIF":15.0,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Review on Soft Ionic Touch Point Sensors 软离子触点传感器综述

IF 13 2区材料科学

Energy & Environmental Materials Pub Date : 2024-07-12 DOI: 10.1002/eem2.12794

Gibeom Lee, Donghyun Lee, Gwang-Bum Im, Younghoon Lee

引用次数: 0