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Surface repair of wide-bandgap perovskites for high-performance all-perovskite tandem solar cells

Journal of Energy Chemistry 2024年第6期93卷 64-70,I0003页

作者： Xiaojing Lv Weisheng Li Jin Zhang Yujie Yang Xuefei Jia Yitong Ji Qianqian Lin Wenchao Huang Tongle Bu Zhiwei Ren Canglang Yao Fuzhi Huang Yi-Bing Cheng Jinhui Tong State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina Department of Electrical and Electronic Engineering Photonics Research Institute(PRI)Research Institute for Intelligent Wearable Systems(iWEAR)The Hong Kong Polytechnic University999077Hong KongChina Laboratory of Advanced Materials Fudan UniversityShanghai 200438China Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200GuangdongChina

Wide-bandgap(WBG)perovskite solar cells(PSCs)play a fundamental role in perovskite-based tandem solar ***,the efficiency of WBG PSCs is limited by significant open-circuit voltage losses,which are primarily caused by surface *** this study,we present a novel method for modifying surfaces using the multifunctional S-ethylisothiourea hydrobromide(SEBr),which can passivate both Pb^(-1)and FA^(-1)terminated surfaces,Moreover,the SEBr upshifted the Fermi level at the perovskite interface,thereby promoting carrier *** proposed method was effective for both 1.67 and 1.77 eV WBG PSCs,achieving power conversion efficiencies(PCEs)of 22.47%and 19.90%,respectively,with V_(OC)values of 1.28 and 1.33 V,along with improved film and device *** this advancement,we were able to fabricate monolithic all-perovskite tandem solar cells with a champion PCE of 27.10%,This research offers valuable insights for passivating the surface trap states of WBG perovskite through rational multifunctional molecular engineering.

关键词： Wide-bandgap perovskite Surface defect Multifunctional molecule All-perovskite tandem solar cells

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Unprecedented strong and reversible atomic orbital hybridization enables a highly stable Li-S battery

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国家科学评论（英文版） 2022年第7期9卷 109-119页

作者： Min Yan Wenda Dong Fu Liu Lihua Chen Tawfique Hasan Yu Li Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Hubei Engineering Technology Research Center of Optoelectronic and New Energy MaterialsSchool of Materials Science and EngineeringWuhan Institute of TechnologyWuhan 430205China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Cambridge Graphene Centre University of CambridgeCambridge CB3 OFAUK State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurNamur B-50000 Belgium

The shuttle effect and excessive volume change of the sulfur cathode severely impede the industrial implementation of Li-S *** is still highly challenging to find an efficient way to suppress the shuttle effect and volume ***,we report,for the first time,an innovative atomic orbital hybridization concept to construct the hierarchical hollow sandwiched sulfur nanospheres with double-polyaniline layers as the cathode material for large-scale high-performance Li-S *** hierarchically 3D,cross-linked and stable sulfur-polyaniline backbone with interconnected disulfide bonds provides a new type and strong intrinsic chemical confinement of sulfur owing to the atomic orbital hybridization of Li 2s,S 3p,C 2p and N ***,such atomic orbital hybridization of sulfur sandwiched in the double sulfur-polyaniline network is highly reversible during the discharge/charge process and can very efficiently suppress the shuttle effect and volume expansion,contributing to a very high capacity of 1142 mAh g-1 and an excellent stabilized capacity of 886 mAh g-1 at 0.2 C after 500 cycles with a suppressed volume expansion and an unprecedented electrode *** innovative atomic orbital hybridization concept can be extended to the preparation of other electrode materials to eliminate the shuttle effect and volume expansion in battery *** present work also provides a commercially viable and up-scalable cathode material based on this strong and highly reversible atomic orbital hybridation for large-scale high-performance Li-S batteries.

关键词： atomic orbital hybridization hierarachical hollow sandwiched sulfur nanosphere double sulfur–polyaniline networks lithium–sulfur batteries insitu vulcanization

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Interfacial reaction behavior and mechanical properties of 5A06 Al alloy soldered with Sn-1Ti-xGa solders at a low temperature

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China Welding 2023年第2期32卷 23-31页

作者：宋立志肖勇奚邦富李佳琪张建 School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Active soldering of 5A06 Al alloy was performed at 300 ℃ by using Sn-1Ti and Sn-1Ti-0.3Ga active solders, respectively. Theeffects of soldering time on the microstructure and mechanical properties of the joints were investigated. The results showed that the Sn-1Tisolder broke the oxide film on the surface of the Al substrate and induced intergranular diffusion in the Al substrate. When Ga was added tothe solder, severe dissolution pits appeared in the Al substrate due to the action of Sn-1Ti-0.3Ga solder, and many Al particles were flakedfrom the matrix into the solder seam. Under thermal stress and the Ti adsorption effect, the oxide film cracked. With increasing solderingtime, the shear strength of 5A06 Al alloy joints soldered with Sn-1Ti and Sn-1Ti-0.3Ga active solders increased. When soldered for 90 min,the joint soldered with Sn-1Ti-0.3Ga solder had a higher shear strength of 22.12 MPa when compared to Sn-1Ti solder.

关键词： 5A06-Al alloy Sn-Ti-Ga solder low-temperature soldering interfacial reaction mechanical properties

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Improvement of AlN Thermal Conductivity Based on Reductive Compound Additives

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Journal of Wuhan University of technology(materials Science) 2023年第5期38卷 1025-1033页

作者： LI Meijuan WANG Chuanyi WANG Gaoqiang WANG Chuanbin SHEN Qiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life SciencesWuhan University of TechnologyWuhan 430070China Nanchong Three-circle Electronics Co.LTD. Nanchong 637100China

AlN ceramics were prepared by plasma activation sintering(PAS)with compound additives yttrium acetylacetonate(Y(acac)_(3))and melamine(C_(3)H_(6)N_(6)).The effects of compound additives on the microstructure,density,and thermal properties of Al N ceramic were studied.Y(acac)3and C_(3)H_(6)N_(6)can form Y_(2)O_(3),residual organic carbon and reducing gas during the heating process,which improves the Al N sintering performance at a temperature of 1700℃and the bulk thermal *** the content of Y(acac)_(3)is 10 wt%and C_(3)H_(6)N_(6)is 3 wt%,the thermal conductivity of Al N ceramics is 105.6 W/(m·K),which is much higher than that of Al N ceramics with Y_(2)O_(3)under the same sintering *** work provides theoretical reference for the preparation of high-performance Al N ceramic.

关键词： reductive compound additives AlN ceramic thermal conductivity:plasma activated sintering

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Self-powered sensor based on compressible ionic gel electrolyte for simultaneous determination of temperature and pressure

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InfoMat 2024年第7期6卷 62-75页

作者： Junjie Zou Yanan Ma Chenxu Liu Yimei Xie Xingyao Dai Xinhui Li Shuxuan Li Shaohui Peng Yang Yue Shuo Wang Ce-Wen Nan Xin Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices&International School of Materials Science and EngineeringWuhan University of TechnologyWuhanthe People's Republic of China Hubei Key Laboratory of Energy Storage and Power Battery School of MathematicsPhysics and Optoelectronic EngineeringHubei University of Automotive TechnologyShiyanthe People's Republic of China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefeithe People's Republic of China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijingthe People's Republic of China

The simultaneous detection of multiple stimuli,such as pressure and temperature,has long been a persistent challenge for developing electronic skin(eskin)to emulate the functionality of human ***,the demand for integrated power supply units is an additional pressing concern to achieve its lightweightness and ***,we propose a self-powered dual temperature–pressure(SPDM)sensor,which utilizes a compressible ionic gel electrolyte driven by the potential difference between MXene and Al *** SPDM sensor exhibits a rapid and timely response to changes in pressure-induced deformation,while exhibiting a slow and hysteretic response to temperature *** distinct response characteristics enable the differentiation of current signals generated by different stimuli through machine learning,resulting in an impressive accuracy rate of 99.1%.Furthermore,the developed SPDM sensor exhibits a wide pressure detection range of 0–800 kPa and a broad temperature detection range of 5–75C,encompassing the environmental conditions encountered in daily human *** dual-mode coupled strategy by machine learning provides an effective approach for temperature and pressure detection and discrimination,showcasing its potential applications in wearable electronics,intelligent robots,human–machine interactions,and so on.

关键词： e-skin gel electrolyte machine learning self-powered dual-mode sensor

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Chiral effect on Aβ fibrillation from molecular-scale to nanoscale

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Nano Research 2022年第7期15卷 6721-6729页

作者： Guanbin Gao Guowei Zhu Liangchong Yu Zijun Zhang Ting Zhang Xinglin Liu Cheng Zhang Lin Zhou Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

β-Amyloid(Aβ)peptide fibrillation,one of the characteristic hallmarks of Alzheimer’s disease,is determined by many interfacial physical-chemical factors,e.g.,charge,hydrophobicity,*** extensive research,chiral effect in different-scales on the fibrillation process of Aβremains ***,molecular-scale,sub-nanoscale,and nanoscale chiral-structures were constructed to investigate their chiral effect on the fibrillation of Aβ_(40) *** structures from molecular-scale to nanoscale were obtained from the different periods of the chemosynthesis process of chiral ZnS quantum-dots(QDs),confirmed by real-time monitoring of circular dichroism *** molecular-scale,both L-penicillamine(L-P)and D-P ligands accelerated the fibrillation of Aβ_(40),and the speed-up effect of D-P was slightly stronger than *** sub-nanoscale,both two chiral Zncomplexes(L-Zn and D-Zn)induced the agglomeration of Aβ_(40) without chirality *** nanoscale,both L-ZnS and DZnS QDs inhibited the fibrillation of Aβ_(40),and the inhibition effect of L-ZnS was notably better than that of ***-situ kinetics experiments of Aβ_(40) co-incubated with two chiral QDs demonstrated that L-ZnS completely prevents the misfolding of Aβ_(40) from unfolded toβ-sheet,while D-ZnS cannot achieve *** site-replacement experiments and simulation results revealed the underlying molecular mechanisms of the different inhibition efficiency of chiral ZnS QDs on Aβ_(40) fibrillation,which mainly attribute to the stereoselectivity interaction between the chiral ligands of ZnS QDs and electro-positive amino acid residues(R5,K16,and K28)of Aβ_(40).This work offers a microscopic insight of chiral effect on Aβfibrillation exerted by structures in different-scales,and provides a guidance in precise regulation of protein fibrillation via manipulating chiral structures in different-scales.

关键词： chirality molecular-scale sub-nanoscale nanoscale Aβ_(40) fibrillation

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Directly Unveiling the Photothermal Corrosion of BiVO4 via In-situ Transmission Electron Microscopy

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Chemical Research in Chinese Universities 2025年第2期41卷 351-357页

作者： WANG Lindong SUN Jingyi WANG Lang LI Yu HU Zhiyi SU Baolian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering(ISME)Wuhan University of TechnologyWuhan 430070P.R.China Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070P.R.China CMI(Laboratory of Inorganic Materials Chemistry) University of Namurrue deBruxelles 61B-5000NamurBelgium

BiVO4(BVO)is widely utilized in photothermal catalysis because of its favorable bandgap structure(2.4 eV),excellent photo response capabilities and high thermal ***,the mechanism of BVO photothermal corrosion still remains unclear due to the lack of visualized characterization on the degradation process in real ***,we directly unveil the photothermal-induced microstructural evolution of BVO through in-situ heating(scanning)transmission electron microscopy[(S)TEM].The results indicate that the electrons are the initiating condition(“switch”)for the photothermal corrosion of BVO,resulting in the precipitation of Bi and reduction of V5+to V3+in the substrate,while the thermal field facilitates the evaporation of Bi and the recrystallization of *** work sheds light on the mechanism of BVO photothermal corrosion in dynamics and provides significant insights into the photothermal synergistic effects.

关键词： BiVO4 Photothermal corrosion In-situ transmission electron microscopy(TEM) Photothermal catalysis Structural evolution

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Hybrid ionic/electronic interphase enabling uniform nucleation and fast diffusion kinetics for stable lithium metal anode

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Chinese Chemical Letters 2024年第2期35卷 626-633页

作者： Lun Li Pengxia Ji Meng Huang Zixin Zhang Hong Wang Francis Verpoort Jinlong Yang Daping He State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China Hubei Engineering Research Center of RF-Microwave Technology and Application Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

Lithium(Li)dendrite issue,which is usually caused by inhomogeneous Li nucleation and fragile solid electrolyte interphase(SEI),impedes the further development of high-energy Li metal ***,the integrated construction of a high-stable SEI layer that can regulate uniform nucleation and facilitate fast Li-ion diffusion kinetics for Li metal anode still falls ***,we designed an artificial SEI with hybrid ionic/electronic interphase to regulate Li deposition by in-situ constructing metal Co clusters embedded in LiF *** generated Co and LiF both enable fast Li-ion diffusion kinetics,meanwhile,the lithiophilic properties of Co clusters can serve as Li-ion nucleation sites,thereby contributing to uniform Li nucleation and non-dendritic *** a result,a dendrite-free Li deposition with a low overpotential(16.1 mV)is achieved,which enables an extended lifespan over 750 h under strict *** full cells with high-mass-loading LiFePO_(4)(11.5 mg/cm^(2))as cathodes exhibit a remarkable rate capacity of 84.1 mAh/g at 5 C and an improved cycling performance with a capacity retention of 96.4%after undergoing 180 cycles.

关键词： Lithium metal anode Hybrid ionic/electronic interphase Solid electrolyte interphase Fast diffusion kinetics Dendritic growth of lithium

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Mitigating the dissolution of V_(2)O_(5) in aqueous ZnSO_(4) electrolyte through Ti-doping for zinc storage

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Chinese Chemical Letters 2024年第1期35卷 558-562页

作者： Zihe Wei Xuehua Wang Ting Zhu Ping Hu Liqiang Mai Liang Zhou Hubei Longzhong Laboratory Wuhan University of Technology(Xiangyang Demonstration Zone)Xiangyang 441000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China

Aqueous zinc-ion batteries(AZIBs)have become a hotspot for electrochemical energy storage owing to the high safety,low cost,environmental friendliness,and favorable rate ***,the serious dissolution of cathode materials in aqueous electrolytes would lead to poor cyclability,which should be addressed before ***,we designed a Ti-doped V_(2)O_(5) with yolk-shell microspherical structure for *** Ti doping stabilizes the crystal structure and relieves the dissolution of V_(2)O_(5) in aqueous ZnSO_(4) *** optimized sample,Ti_(0.2)V_(1.8)O_(4.9),delivers a high capacity(355 mAh/g at 0.05 A/g)as well as good capacity retention(89%after 2500 cycles at 1.0 A/g).This work provides an effective strategy to mitigate the dissolution of cathode material in aqueous ZnSO_(4) electrolyte for cyclability enhancement.

关键词： Aqueous zinc-ion batteries V_(2)O_(5)cathode materials Aqueous ZnSO_(4)electrolyte Yolk-shell structure Ti doping

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In Situ-Constructed Li_(x)MoS_(2)with Highly Exposed Interface Boosting High-Loading and Long-Life Cathode for All-Solid-state Li-S Batteries

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Energy & Environmental materials 2024年第4期7卷 163-174页

作者： Hao Li Rui Wang Jiangping Song Dan Liu Hongyang Gao Yimin Chao Haolin Tang A State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Chemistry Chemical Engineeringand Life ScienceWuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China School of Chemistry University of East AngliaNorwich NR47TJUK

As the persistent concerns regarding sluggish reaction kinetics and insufficient conductivities of sulfur cathodes in all-solid-state Li-S batteries(ASSLSBs),numerous carbon additives and solid-state electrolytes(SSEs)have been incorporated into the cathode to facilitate ion/electron pathways around ***,this has resulted in a reduced capacity and decomposition of ***,it is worth exploring neotype sulfur hosts with electronic/ionic conductivity in the ***,we present a hybrid cathode composed of few-layered S/MoS_(2)/C nanosheets(<5 layers)that exhibits high-loading and long-life performance without the need of additional carbon additives in advanced *** multifunctional MoS_(2)/C host exposes the abundant surface for intimate contacting sites,in situ-formed LixMoS_(2)during discharging as mixed ion/electron conductive network improves the S/Li2S conversion,and contributes extra capacity for the part of active *** a high active material content(S+MoS_(2)/C)of 60 wt%in the S/MoS_(2)/C/Li_(6)PS_(5)Cl cathode composite(the carbon content is only~3.97 wt%),the S/MoS_(2)/C electrode delivers excellent electrochemical performance,with a high reversible discharge capacity of 980.3 mAh g^(-1)(588.2 mAh g^(-1)based on the whole cathode weight)after 100 cycles at 100 mA g^(-1).The stable cycling performance is observed over 3500 cycles with a Coulombic efficiency of 98.5%at 600 mA g^(-1),while a high areal capacity of 10.4 mAh cm^(-2)is achieved with active material loading of 12.8 mg cm^(-2).

关键词： all-solid-state lithium-sulfur batteries conversion/intercalation high-loading and long-life low carbon content mixed ionic/electronic conductivities

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