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Operando monitoring of dendrite formation in lithium metal batteries via ultrasensitive tilted fiber Bragg grating sensors

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Light(Science & Applications) 2024年第1期13卷 153-166页

作者： Xile Han Hai Zhong Kaiwei Li Xiaobin Xue Wen Wu Nan Hu Xihong Lu Jiaqiang Huang Gaozhi Xiao yaohua mai Tuan Guo Institute of Photonics Technology Jinan UniversityGuangzhou 510632China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632China Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun 130022China The Key Lab of Low-Carbon Chemistry&Energy Conservation of Guangdong Province School of ChemistrySun Yat-Sen UniversityGuangzhou 510275China Sustainable Energy and Environment Thrust The Hong Kong University of Science and Technology(Guangzhou)NanshaGuangzhouGuangdong 511400China Advanced Electronics and Photonics Research Centre National Research Council of CanadaOttawa K1A OR6Canada

Lithium(Li)dendrite growth significantly deteriorates the performance and shortens the operation life of lithium metal *** the intricate dynamics of surface localized and rapid mass transport at the electrolyte–electrode interface of lithium metal is essential for the understanding of the dendrite growth process,and the evaluation of the solutions mitigating the dendrite growth *** we demonstrate an approach based on an ultrasensitive tilted fiber Bragg grating(TFBG)sensor which is inserted close to the electrode surface in a working lithium metal battery,without disturbing its *** to the superfine optical resonances of the TFBG,in situ and rapid monitoring of mass transport kinetics and lithium dendrite growth at the nanoscale interface of lithium anodes have been *** correlations between the performance of different natural/artificial solid electrolyte interphases(SEIs)and the time-resolved optical responses have been observed and quantified,enabling us to link the nanoscale ion and SEI behavior with the macroscopic battery *** new operando tool will provide additional capabilities for parametrization of the batteries’electrochemistry and help identify the optimal interphases of lithium metal batteries to enhance battery performance and its safety.

关键词： battery lithium electrolyte

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机器学习辅助钙钛矿薄膜制备工艺优化及特征重要性评估

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发光学报 2024年第3期45卷 399-406页

作者：弓箭陈谦李阳马梦恩马玉姣吴绍航刘冲麦耀华五邑大学智能制造学部广东江门529020 暨南大学物理与光电工程学院广东广州510632

钙钛矿太阳能电池仅用十年左右的时间将效率提升至认证的26.1%,非常接近晶硅太阳能电池26.81%的认证效率,展现出巨大的产业化潜力。当前,钙钛矿太阳能电池器件效率还在提升,然而在器件制备过程中,钙钛矿太阳能电池的性能受到许多不可分... 详细信息

钙钛矿太阳能电池仅用十年左右的时间将效率提升至认证的26.1%,非常接近晶硅太阳能电池26.81%的认证效率,展现出巨大的产业化潜力。当前,钙钛矿太阳能电池器件效率还在提升,然而在器件制备过程中,钙钛矿太阳能电池的性能受到许多不可分割的因素影响,传统方法往往采用试错的方式来优化钙钛矿太阳能电池的制备工艺,花费了大量的时间。贝叶斯优化是一种全局优化算法,在解决人工智能的黑盒问题方面取得了很大的成功。本文利用贝叶斯优化算法对钙钛矿层涉及到的碘化铅(PbI2)过量百分比、退火温度、退火时间、真空萃取时间四个工艺参数进行优化选择,显著降低了研发成本,缩短了研发时间。通过五轮实验迭代,累计34组工艺条件,制备出了器件效率为23.56%的反型钙钛矿太阳能电池。

关键词：钙钛矿太阳能电池机器学习工艺优化高效率

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The issues on the commercialization of perovskite solar cells

Materials Futures

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Materials Futures 2024年第2期3卷 1-35页

作者： Lixiu Zhang Yousheng Wang Xiangchuan Meng Jia Zhang Pengfei Wu Min Wang Fengren Cao Chunhao Chen Zhaokui Wang Fu Yang Xiaodong Li Yu Zou Xi Jin Yan Jiang Hengyue Li Yucheng Liu Tongle Bu Buyi Yan Yaowen Li Junfeng Fang Lixin Xiao Junliang Yang Fuzhi Huang Shengzhong Liu Jizhong Yao Liangsheng Liao Liang Li Fei Zhang Yiqiang Zhan Yiwang Chen yaohua mai Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People’s Republic of China Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031People’s Republic of China School of Information Science and Technology Fudan UniversityShanghai 200433People’s Republic of China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072People’s Republic of China School of Physical Science and Technology Soochow UniversitySuzhou 215006People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Institute of optoelectronics Fudan UniversityShanghai 200433People’s Republic of China College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People’s Republic of China College of Biophotonics South China Normal UniversityGuangzhou 510631People’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China School of Materials Science and Engineering Shaanxi Normal UniversityXi’an 710119People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Microquanta semiconductor Hangzhou 311121People’s Republic of China

Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance,ease of solution processing,and low *** power conversion efficiency record is constantly being broken and has recently reached 26.1%in the lab,which is comparable to the established photovoltaic technologies such as crystalline silicon,copper indium gallium selenide and cadmium telluride(CdTe)solar ***,perovskite solar cells are standing at the entrance of industrialization,where huge opportunities and risks ***,towards commercialization,challenges of up-scaling,stability and lead toxicity still remain,the proper handling of which could potentially lead to the widespread adoption of perovskite solar cells as a low-cost and efficient source of renewable *** review gives a holistic analysis of the path towards commercialization for perovskite solar cells.A comprehensive overview of the current state-of-the-art level for perovskite solar cells and modules will be introduced first,with respect to the module efficiency,stability and current status of *** will then discuss the challenges that get in the way of commercialization and the corresponding strategies to address them,involving the upscaling,the stability and the lead toxicity *** into the future direction of commercialization of perovskite photovoltaics was also provided,including the flexible perovskite cells and modules and perovskite indoor ***,the future perspectives towards commercialization are put forward.

关键词： commercializations perovskite solar cells state-of-the-art level challenges and perspectives indoor photovoltaics

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Hole‑Transport Management Enables 23%‑Efficient and Stable Inverted Perovskite Solar Cells with 84%Fill Factor

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Nano-Micro Letters 2023年第8期15卷 154-166页

作者： Liming Liu Yajie Ma Yousheng Wang Qiaoyan Ma Zixuan Wang Zigan Yang Meixiu Wan Tahmineh Mahmoudi Yoon‑Bong Hahn yaohua mai Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People’s Republic of China Guangdong Mellow Energy Co. Ltd.Guangzhou 510630People’s Republic of China Key Laboratory of New Semiconductors and Devices of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632People’s Republic of China School of Semiconductor and Chemical Engineering Solar Energy Research CenterJeonbuk National University567 BaekjedaeroDeokjin‑guJeonju‑siJeollabuk‑do 54896Republic of Korea

NiO_(x)-based inverted perovskite solar cells(PSCs)havepresented great potential toward low-cost,highly efficient and stablenext-generation ***,the presence of energy-levelmismatch and contact-interface defects between hole-selective contacts(HSCs)and perovskite-active layer(PAL)still limits device ***,we report a graded configuration based on bothinterface-cascaded structures and p-type molecule-doped compositeswith two-/three-dimensional formamidinium-based *** find that the interface defects-induced non-radiativerecombination presented at HSCs/PAL interfaces is remarkably suppressedbecause of efficient hole extraction and ***,astrong chemical interaction,halogen bonding and coordination bondingare found in the molecule-doped perovskite composites,whichsignificantly suppress the formation of halide vacancy and parasitic metallic *** a result,NiO_(x)-based inverted PSCs present a power-conversion-efficiency over 23%with a high fill factor of 0.84 and open-circuit voltage of 1.162 V,which are comparable to the best reported around 1.56-electron volt bandgap ***,devices with encapsulation present high operational stability over 1,200 h during T_(90) lifetime measurement(the time as a function of PCE decreases to 90%of its initial value)under 1-sun illumination in ambient-air conditions.

关键词： Inverted NiO_(x)-based perovskite solar cells Hole-transport management Interface-induced defect passivation High performance and stability

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Interpenetrating structure for efficient Sb_(2)Se_(3) nanorod array solar cells loaded with CuInSe_(2) QDs sensitizer

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Journal of Energy Chemistry 2022年第5期31卷 521-528页

作者： Cong Liu Zhenxiao Pan Kai Shen Jianzha Zheng Xiaoyang Liang Hongbing Zhu Fei Guo Zhiqiang Li Ruud E.I.Schropp yaohua mai Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632GuangdongChina Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices College of Physics Science and TechnologyHebei UniversityBaoding 071002HebeiChina

The strong anisotropic electrical properties of one-dimensional(1 D) nanostructure semiconductors,especially the anisotropic carrier transport, have a negative and significant influence on the performance of solar cells if the nanostructures have random orientation. Considering the advantages of nanorod solar cells in carrier transport, we have achieved growth of vertically aligned Sb_(2)Se_(3) nanorod array with highly(hk1) orientation on Cd S substrate, and constructed superstrate nanorod solar cells for the first time. The Sb_(2)Se_(3) nanorod array solar cells exhibit the more efficient and long-range carrier transport in vertical direction. Furthermore, in order to suppress interface recombination, a CuInSe_(2) quantum dots(QDs) sensitizer has been applied to fill the volume between the nanorods completely, thus forming an interpenetrating nanocomposite structure. The CuInSe_(2) QDs can harvest additional light by absorption of visible light and contribute photocurrent. Meantime, the QDs function as a hole transport material and thus reduce the dependence of lateral transport. Consequently, the interpenetrating nanocomposite CuInSe_(2) / Sb_(2)Se_(3) solar cells display a power conversion efficiency of 7.54% with significant enhancements in the short-circuit current density and open-circuit voltage over pure Sb_(2)Se_(3) nanorod cells. This is the highest efficiency for superstrate solar cells based on Sb_(2)Se_(3) nanorod arrays.

关键词： Superstrate solar cells Sb_(2)Se_(3)nanorod arrays Carrier transport Interpenetrating structure CuInSe_(2)QDs

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Solvents incubatedπ-πstacking in hole transport layer for perovskite-silicon 2-terminal tandem solar cells with 27.21%efficiency

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Journal of Energy Chemistry 2023年第7期82卷 25-30,I0002页

作者： Qiaoyan Ma Jufeng Qiu Yuzhao Yang Fei Tang Yilin Zeng Nanxi Ma Bohao Yu Feiping Lu Chong Liu Andreas Lambertz Weiyuan Duan Kaining Ding yaohua mai Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632GuangdongChina School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006GuangdongChina IEK-5 Photovoltaik Forschungszentrum Jülich GmbH52425 JülichGermany Department of Physics Tianshui Normal UniversityTianshui 741000GansuChina Guangdong Mellow Energy Co. LimitedHuajing RoadGuangzhou 510630GuangdongChina

Room temperature sputtered inorganic nickel oxide(NiO_(x))is one of the most promising hole transport layers(HTL)for perovskite-sillion 2-terminal tandem solar cells with the aid of ultrathin and compact organic layers to passivate the surface *** this study,the aromatic solvent with different substituent groups was used to regulate the conformation of poly[bis(4-phenyl)(2,4,6-trimethylphenyl)am ine](PTAA)*** a result,the single-junction perovskite solar cell(PSC)gained a power conversion efficiency(PCE)of 20.63%,contributing to a 27.21%efficiency for monolithic perovskite/silicon(double-side polished)2-terminal tandem solar cell,by applying the alkyl aromatic solvent to enhance theπ-πstacking of PTAA molecular *** tandem solar cell can maintain 95%initial efficiency after aging over 1000 *** study provides a universal approach for improving the photovoltaic performance of NiO_(x)/polymer-based perovskite/silicon tandem solar cells and other single junction inverted PSCs.

关键词： Tandem solar cells Low temperature deposition Hole transporting property π-πstacking Alkyl aromatic solvent

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A brief review on the lead element substitution in perovskite solar cells

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Journal of Energy Chemistry 2018年第4期27卷 1054-1066页

作者： Chong Liu Wenzhe Li Jiandong Fan yaohua mai Institute of New Energy Technology College of Information Science and Technology Jinan University

Organic-inorganic halide perovskites have attracted huge attentions as the novel photoelectric function materials. So far, perovskite solar cells （PSCs） with prominent performance are still based on the lead halide perovskites, although they are potentially highly toxic. The issue of toxicity has become one of most crucial problems before its commercialization. Therefore, an increasing number of studies have focused on the lead element substitution in PSCs. and many excellent achievements have been reported. Alternative elements, e.g., Sn, Ge, Bi and Sb were successively used to fabricate lead-free perovskites, which provided potential possibility to tackle the toxicity issue. Recently. Sn-Pb hybrid perovskites were demonstrated to realize lead reduction without sacrificing the PCE. In addition, a new family of halide double-perovskites was explored and given high expectations. Here, we give a brief review on the lead substitution in PSCs, including theoretical explorations and experimental achievements, and finally we propose some perspectives.

关键词： Toxicity Stability Lead-free Sn-Pb hybrid perovskite solar cells

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Homogenizing the sulfonic acid distribution of DMF-modified PEDOT:PSS films and perovskite solar cells

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Journal of Energy Chemistry 2019年第5期28卷 71-77页

作者： Hongliang Li Cuiling Zhang Yunping Ma Zhiqiang Li Ying Xu yaohua mai Institute of Photovoltaics College of Physics Science and TechnologyHebei UniversityBaoding 071002HebeiChina Institute of New Energy Technology College of Information Science and TechnologyJinan University.Guangzhou 510632GuangdongChina

Inverted perovskite solar cells using pristine PEDOT:PSS as the hole-transporting layer (HTL) have been widely studied for its less hysteresis and low-temperature preparation technologies. However, this device suffers from an inferior open-circuit voltage (VOC) and stability problems. Several attempts have made on film formation and interface engineering to improve the efficiency. Modification proved beneficial to decrease energy offset at the interface between the HTL layer and the adjacent perovskite layer. In this paper, modification PEDOT:PSS layers were realized with a dimethyl formamide (DMF) solvent. The sulfonic acid distribution was homogenized in the normal directi on after modification. The work function of the modified PEDOT:PSS layers increased from 4.71 to 5.07eV, and the conductivity of modified PEDOT:PSS increased from 3×10^-4 to 0.45 S/cm. The as-deposited perovskite films were more uniform with larger grain sizes and less pinholes, resulting in an improved VOC from 0.93 to 1.048 V, while the efficiency was increased from 11.5% to 16.8%. Solar cells without encapsulation under the 50 h and 50% humidity aging test showed 7% degradation of fill factor (FF) with 50 v/v% PEDOT:PSS layer, while the fill factor decreased 11.2% in the 0 v/v% PEDOT:PSS layer, respectively.

关键词： Modification Hysteresis Inverted perovskite solar cells (PSCs)

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The fabrication of homogeneous perovskite films on non-wetting interfaces enabled by physical modification

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Journal of Energy Chemistry 2019年第11期28卷 192-198页

作者： Jiang You Fei Guo Shudi Qiu Wenxin He Chuan Wang Xianhu Liu Weijian Xu yaohua mai State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082HunanChina Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632GuangdongChina National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou UniversityZhengzhou 450002HenanChina

Conjugated polymers are commonly used as effective hole transport materials(HTMs) for preparation of high-performance perovskite solar cells. However, the hydrophobic nature of these materials renders it difficult to deposit photovoltaic perovskite layers on top via solution processing. In this article, we report a generic surface modification strategy that enables the deposition of uniform and dense perovskite films on top of non-wetting interfaces. In contrast to the previous proposed chemical modifications which might alter the optoelectronic properties of the interfacial layers, we realized a nondestructive surface modification enabled by introducing a layer of insulating mesoporous aluminum oxide(Al2O3). The surface energies of the typical non-wetting hole-transport layers(PTAA, P3 HT, and Poly-TPD) were significantly reduced by the Al2O3 modification. Benefiting from the intact optoelectronic properties of the HTMs, perovskite solar cells deposited on these interface materials show full open-circuit voltages( V OC) with high fill factors(FF) up to 80%. Our method provides an effective avenue for exploiting the full potential of the existing as well as newly developed non-wetting interface materials for the fabrication of high-performance inverted perovskite solar cells.

关键词： Perovskite Non-wetting Hole-transport materials Surface modification Aluminum oxide

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Robust interface layers with redox shuttle reactions suppress the dendrite growth for stable solid-state Li metal batteries

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Journal of Energy Chemistry 2020年第12期29卷 222-229页

作者： Shuaibo Zeng Gowri Manohari Arumugam Wentao Li Xiahu Liu Xin Li Hai Zhong Fei Guo yaohua mai Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510006GuangdongChina National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou UniversityZhengzhou 450000HenanChina

Designing a durable lithium metal anode for solid state batteries requires a controllable and uniform deposition of lithium, and the metal lithium layer should maintain a good interface contact with solid state electrolyte during cycles. In this work, we construct a robust functional interface layer on the modified LiB electrode which considerably improves the electrochemical stability of lithium metal electrode in solid state batteries. It is found that the functional interface layer consisting of polydioxolane, polyiodide ion and Li TFSI effectively restrains the growth of lithium dendrites through the redox shuttle reaction of I-/I3-and maintains a good contact between lithium anode and solid electrolyte during cycles. Benefit from these two advantages, the modified Li-B anode exhibits a remarkable cyclic performance in comparison with those of the bare Li-B anode.

关键词： Redox shuttle reaction Robust interface layer Lithium dendrites Long-lasting effect Solid-state batteries

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