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Bifunctional bridging capping layer enables 24.5% efficiency of perovskite solar cells with polymer-based hole transport materials

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Science China Chemistry 2025年第1期 350-359页

作者： Can Zhu Yiyang Wang Lei Meng Beibei Qiu Jing Li Shucheng Qin Ke Hu Xin Jiang Wenbin Lai Minchao Liu Zhe Liu Chenxing Lu Jinyuan Zhang Yongfang Li Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences School of Chemical Science University of Chinese Academy of Sciences Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province College of Physics and Electronic Information Engineering Zhejiang Normal University Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of Sciences Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials ScienceSoochow University

Developing a bridge capping layer between perovskite and hole transport layer materials（HTMs） in the n-i-p perovskite solar cells（pero-SCs） is an effective approach to modify the morphology of HTMs and passivate the perovskite ***, we select the quinoxaline-based bifunctional passivation agent, quinoxalin-6-yl-methylamine hydrochloride（Qx MACl）,as the bridging layer, and a D-A copolymer PBQ12 containing the same quinoxaline unit as an HTM for the n-i-p pero-SCs. Due to the π-π stacking among the common quinoxaline units in the bridge layer and HTM, Qx MACl induces the π-π stacking of the PBQ12 film and improves the film morphology of HTMs with better conductivity. Additionally, Qx MACl can effectively passivate the perovskite surface, and PBQ12 possesses appropriate energy levels and high hole mobility. The pero-SCs based on FAPbI3with PBQ12/Qx MACl treatment showed a higher power conversion efficiency（PCE） of 24.05% and outstanding stability, maintaining 95.4% and 92.1% of its initial PCE after 750 h of storage and after over 800 h of thermal annealing at 85 °C, respectively. To further enhance the PCE of the PBQ12/Qx MACl-based devices, we developed a non-metal ion dopant for the PBQ12 HTM. Through trace doping of PBQ12 HTM by the non-metal ion dopant, the PCE of the PBQ12/Qx MACl-based devices reached 25.24%（the calibrated PCE of 24.55% by the National Institute of Metrology, China）.

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Sulfolane‑Based Flame‑Retardant Electrolyte for High‑Voltage Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 498-516页

作者： Xuanlong He Jie Peng Qingyun Lin Meng Li Weibin Chen Pei Liu Tao Huang Zhencheng Huang Yuying Liu Jiaojiao Deng Shenghua Ye Xuming Yang Xiangzhong Ren Xiaoping Ouyang Jianhong Liu Biwei Xiao Jiangtao Hu Qianling Zhang Graphene Composite Research Center College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor MaterialsSchool of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China GRINM(Guangdong)Research Institute for Advanced Materials and Technology FoshanGuangdong 528051People’s Republic of China college of Energy engineering Zhejiang UniversityHangzhouZhejiang 310027People’s Republic of China School of Materials Science and engineering Xiangtan UniversityXiangtan 411105People’s Republic of China Shenzhen Eigen-Equation Graphene Technology Co.Ltd Shenzhen 518000People’s Republic of China

Sodium-ion batteries hold great promise as next-generation energy storage ***,the high instability of the electrode/electrolyte interphase during cycling has seriously hindered the development of *** particular,an unstable cathode–electrolyte interphase(CEI)leads to successive electrolyte side reactions,transition metal leaching and rapid capacity decay,which tends to be exacerbated under high-voltage ***,constructing dense and stable CEIs are crucial for high-performance *** work reports localized high-concentration electrolyte by incorporating a highly oxidation-resistant sulfolane solvent with non-solvent diluent 1H,1H,5H-octafluoropentyl-1,1,2,2-tetrafluoroethyl ether,which exhibited excellent oxidative stability and was able to form thin,dense and homogeneous *** excellent CEI enabled the O3-type layered oxide cathode NaNi_(1/3)Mn_(1/3)Fe_(1/3)O_(2)(NaNMF)to achieve stable cycling,with a capacity retention of 79.48%after 300 cycles at 1 C and 81.15%after 400 cycles at 2 C with a high charging voltage of 4.2 *** addition,its nonflammable nature enhances the safety of *** work provides a viable pathway for the application of sulfolane-based electrolytes on SIBs and the design of next-generation high-voltage electrolytes.

关键词： Sodium-ion batteries Sulfolane-based electrolyte High voltage Layered oxide cathode Flame retardant

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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu college of Materials Science and engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

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Study on the application of reinforcement learning in the operation optimization of HVAC system

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Building Simulation 2021年第1期14卷 75-87页

作者： Xiaolei Yuan Yiqun Pan Jianrong Yang Weitong Wang Zhizhong Huang School of Mechanical engineering Tongji University4800 Cao’an RoadShanghai201804China Shanghai Research Institute of Building Sciences ShanghaiChina Kuaishou Co.Ltd. BeijingChina sino-german college of Applied Sciences Tongji UniversityShanghai201804China

Supervisory control can be used to optimize the HVAC system operation and achieve building energy conservation,while reinforcement learning(RL)is considered as a promising model-free supervisory control *** this paper,we apply RL algorithm to the operation optimization of air-conditioning(AC)system and propose an innovative RL-based model-free control strategy combining rule-based and RL-based control algorithm as well as complete application *** use a variable air volume(VAV)air-conditioning system for a single-storey office building as a case study to validate the optimization performance of the RL-based *** select control strategies with the rule-based control controller(RBC)and proportional-integral-derivative(PID)controller respectively as the reference *** results show that,for the air supply of single zone,the RL controller performs the best in terms of both non-comfortable time and energy costs of AC system after one-year exploration *** total energy consumption of AC system reduced by 7.7%and 4.7%,respectively compared with RBC and PID *** the air supply of multi-zone,the performance of RL controller begins to outperform the reference strategies after two-year exploration learning and two-year buffer *** the seventh year on,RL controller performs much better in terms of both non-comfortable time and operating costs of AC system,while the operating cost of AC system is reduced by 2.7%to 4.6%compared with the reference *** addition,RL controller is more suitable for small-scale operation optimization problems.

关键词： reinforcement learning HVAC system operation optimization control strategy VAV system energy saving

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The electrochemical advanced oxidation processes coupling of oxidants for organic pollutants degradation: A mini-review

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Chinese Chemical Letters 2019年第12期30卷 2139-2146页

作者： Jun Li Yangju Li Zhaokun Xiong Gang Yao Bo Lai State Key Laboratory of Hydraulics and Mountain River engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China sino-german Centre for Water and Health Research Sichuan UniversityChengdu 610065China Institute of Environmental engineering RWTH Aachen UniversityAachen 52072Germany

The electrochemical advanced oxidation processes(EAOPs) have been extensively applied in the treatment of organic pollutants ***,the mini review provides the coupling systems about EAOPs and different oxidants(e.g.,persulfate(PS),peroxymonosulfate(PMS),and ozone(O3)),including EAOPs-PS systems,EAOPs-PMS systems,EAOPs-peroxone systems,and photoelectro-oxidants systems,for the organic compounds *** coupling system of EAOPs with oxidants is an effective way to improve the generated free radicals(e.g.,HO^·and SO4^·-) concentration and to accelerate pollutant *** this review,we make a summary of the homogeneous and heterogeneous EAOPs-oxidant *** reaction mechanisms of EAOPs combined with different oxidants are elucidated in detail,as well as the synergistic effect for improving the degradation and mineralization efficiency.

关键词： Electrochemical advanced oxidation processes Organic compounds Oxidants Free radicals Reaction mechanism

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ICA-Net: improving class activation for weakly supervised semantic segmentation via joint contrastive and simulation learning

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Optoelectronics Letters 2025年第3期 188-192页

作者： YE Zhuang LIU Ruyu SUN Bo School of Information engineering Chengdu Aviation Vocational and Technical College School of Computer Science and engineering Hangzhou Normal University Quanzhou Institute of Equipment Manufacturing Haixi Institutes Chinese Academy of Sciences

In the field of optoelectronics, certain types of data may be difficult to accurately annotate, such as high-resolution optoelectronic imaging or imaging in certain special spectral ranges. Weakly supervised learning can provide a more reliable approach in these situations. Current popular approaches mainly adopt the classification-based class activation maps (CAM) as initial pseudo labels to solve the task.

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通过低浓度混合有机二硒化物和有机二碲化物有序串联促进安时级高能量密度锂硫电池中的硫氧化还原动力学（英文）

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Science China Materials 2025年第1期 207-216页

作者：周江奇舒程勇张千玉唐伟吴宇平 School of Chemical engineering and Technology Xi'an Jiaotong University School of Chemical engineering Kunming University of Science and Technology college of Materials Science and engineering Sichuan University School of Energy and Environment Southeast University

均相氧化还原介质可以有效缓解多硫化锂在锂硫电池中的穿梭效应和缓慢的氧化还原动力学,但由于多硫化锂的多步转化需要串联催化的多功能活性位点,因此无法实现多硫化物锂的完美性能.基于氧化还原共介导原理,本文提出了一种混合有机二硒...

均相氧化还原介质可以有效缓解多硫化锂在锂硫电池中的穿梭效应和缓慢的氧化还原动力学,但由于多硫化锂的多步转化需要串联催化的多功能活性位点,因此无法实现多硫化物锂的完美性能.基于氧化还原共介导原理,本文提出了一种混合有机二硒化物和有机二碲化物（混合-Se/Te）的促进剂,以诱导串联催化并提升多硫化锂的有效电化学转化.具体而言,二苯二硒化物促进了多硫化锂与硫之间的固-液和液-液转化,而二苯二碲化物则改善了硫化锂沉积的固-液转化.因此,即使在6.5 mg cm-2的高硫负载和5.88μL mg-1的低电解液/硫比下,10 mM的低浓度混合-Se/Te促进剂也提供了6.6 mAh cm-2的高放电容量和在0.5 C下4.1 mAh cm-2的良好倍率性能.此外,组装的1.5 Ah级锂硫软包电池在0.05 C时提供了332 Wh kg-1的能量密度和良好的循环稳定性.我们的研究展示了利用分离活性位点推动连续硫转化反应的适用性，并预计将激发针对能量相关氧还原反应的动力学促进剂的深度分子设计.

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Simulation and analysis of polycrystalline silicon photovoltaic cells surface color differences based on transfer matrix method

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Optoelectronics Letters 2021年第12期17卷 734-740页

作者： CHEN Zijian MA Zenghong JIA Haoyuan ZHANG Lian SUN Yan WANG Shiyu School of Physics and Optoelectronic engineering Xidian UniversityXi’an 710071China Energy engineering School Tianjin Sino-German University of Applied SciencesTianjin 300350China Basic Experimental and Training Center Tianjin Sino-German University of Applied SciencesTianjin 300350China Tianjin Yingli New Energy Co. Ltd.Tianjin 301510China Tianjin Light Industry Vocational Technical college Tianjin 300350China

Following the previous work,in this paper,the antireflective films thicknesses,refractive indexes and reflectance spectra of different color categories of the polycrystalline silicon cells are tested and *** is found that the color difference of polycrystalline silicon cells is mainly caused by the antireflective *** the matrix transfer method is used to simulate the reflection spectra according to the actual tested parameters of the samples,and the effectiveness of the simulation is ***,according to the distribution of the spectral solar irradiance,the total solar absorption of the polycrystalline silicon cells with different antireflective film thicknesses is *** optimal value of the antireflective film thickness of the polycrystalline silicon cell is *** study has important guiding significance for photovoltaic(PV)enterprises to realize the optimal production of plasma enhanced chemical vapor deposition(PECVD)process in production.

关键词： polycrystalline matrix transfer

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Verification of a self-developed CFD-based multi-physics coupled code MPC-LBE for LBE-cooled reactor

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Nuclear Science and Techniques 2021年第5期32卷 84-100页

作者： Zhi-Xing Gu Qing-Xian Zhang Yi Gu Liang-Quan Ge Guo-Qiang Zeng Mu-Hao Zhang Bao-Jie Nie college of Nuclear Technology and Automation engineering Chengdu University of TechnologyChengdu 610059China sino-French Institute of Nuclear engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China

To perform an integral simulation of a pool-type reactor using CFD code,a multi-physics coupled code MPC-LBE for an LBE-cooled reactor was proposed by integrating a point kinetics model and a fuel pin heat transfer model into self-developed CFD *** code verification,a code-to-code comparison was employed to validate the CFD ***,a typical BT transient benchmark on the LBE-cooled XADS reactor was selected for verification in terms of the integral or system *** on the verification results,it was demonstrated that the MPC-LBE coupled code can perform thermal-hydraulics or safety analyses for analysis for processes involved in LBE-cooled pool-type reactors.

关键词： LBE-cooled pool-type reactor Computational fluid dynamics Multi-physics coupling code Safety analysis code Verification

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Degradation of p-nitrophenol(PNP) in aqueous solution by mFe/Cu-air-PS system

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Chinese Chemical Letters 2019年第5期30卷 1129-1132页

作者： Heng Zhang Qingqing Ji Leiduo Lai Gang Yao Bo Lai State Key Laboratory of Hydraulics and Mountain River engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China sino-german Centre for Water and Health Research Sichuan UniversityChengdu 610065China Institute of Environmental engineering RWTH Aachen UniversityAachenGermany

In this study,batch experiments were conducted to investigate the performance of microscale Fe/Cu bimetallic particles-air-persulfate system(mFe/Cu-air-PS)for p-nitrophenol(PNP)treatment in aqueous ***,the optimal operating parameters(i.e.,aeration rate of 1.0 L/min,theoretical Cu mass loading(TMLCu)of 0.110 g Cu/g Fe,mFe/Cu dosage of 15 g/L,PS total dosage of 15 mmol/L,feeding times of PS of 5,initial pH 5.4)were obtained successively by single-factor *** the optimal conditions,high COD and TOC removal efficiencies(71.0%,65.8%)were obtained after 60 min ***,compared with control experiments(i.e.,mFe/Cu,air,PS,mFe/Cu-air,mFe/Cu–PS,air-PS and mFe-air-PS),mFe/Cu-air-PS system exerted superior performance for pollutants removal due to the synergistic effect between mFe/Cu,air and *** addition,the results of control experiments and radical quenching experiments indicate this reinforcement by feeding of PS was greater than by aeration in m Fe/Cu-air-PS ***,the degradation intermediates of PNP in mFe/Cu-air-PS process were identified and measured by *** on the detected intermediates,the degradation pathways of PNP were proposed comprehensively,which revealed that toxic and refractory PNP in aqueous solution could be decomposed effectively and transformed into lower toxicity *** a result,m Fe/Cu-air-PS system with the performance of oxidation combined reduction can be also a potential technology for the treatment of toxic and refractory PNP contained wastewater.

关键词： p-Nitrophenol(PNP) Microscale Fe/Cu bimetallic particles(mFe/Cu) Persulfate(PS) Air aeration mFe/Cu-air-PS system

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