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Optoelectronics Letters 2024年第3期20卷 135-141页

作者： PAN Honggang zhang Bo SONG Dianyou CHEN zhipan CHEN Chunqi LI Rupeng School of Integrated Circuit Science and Engineering Tianjin University of TechnologyTianjin 300384China

In this paper, an actively Q-switched wavelength injection locking random fiber laser(RFL) based on random phase-shifted fiber Bragg grating(RPS-FBG) is proposed, and the performance of the laser is verified by experiments. Within the reflection bandwidth range of RPS-FBG, spanning from 1 549.2 nm to 1 549.9 nm, different laser modes with stable central wavelength and peak power can be selectively chosen by varying the injected light wavelength. The power fluctuation within 1 h is less than 0.1 d Bm, and the central wavelength drift is less than 0.02 nm. When the pump power increases from 90 mW to 300 mW, the pulse width decreases from 3.2 μs to 1.5 μs, and the pulse repetition frequency is 20 kHz. The RFL can reach a stable locking state at the lowest pump power of 100 mW and the lowest injection power of 3 d Bm. When the wavelength is locked, the output pulse is a single pulse. On the contrary, the unlocked output pulse is multi-pulse. The laser has the characteristics of high wavelength tunability in the reflection range of RPS-FBG and it can be an ideal light source in the fields of laser imaging and pulse coding.

关键词： fiber switched modulator

Recent progress and challenges in interdigital microbatteries:Fabrication, functionalization and integration

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Journal of Energy Chemistry 2023年第3期78卷 294-314,I0009页

作者： Li Song Xuting Jin Chunlong Dai Yuyang Han Jiatao zhang Yang Zhao zhipan zhang Liangti Qu Key Laboratory of Cluster Science Ministry of Education of ChinaKey Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001Henan China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

Currently,the increasing demands for portable,implantable,and wearable electronics have triggered the interest in miniaturized energy storage devices.Different from conventional energy storage devices,interdigital microbatteries(IMBs) are free of separators and prepared on a single substrate,potentially achieving a short ionic diffusion path and better performance.Meanwhile,they can be easily fabricated and integrated into on-chip miniaturized electronics,holding the promise to provide long-lasting power for advanced microelectronic devices.To date,while many seminal works have been reviewed the topic of microbatteries,there is no work that systematically summarizes the development of IMBs of high energy density and stable voltage platforms from fabrication,functionalization to integration.The current review focuses on the most recent progress in IMBs,discussing advanced micromachining techniques with compatible features to construct high-performance IMBs with smart functions and intelligent integrated systems.The future opportunities and challenges of IMBs are also highlighted,calling for more efforts in this dynamic and fast-growing research field.

关键词： Interdigital microbatteries Fabrication Functionalization

Ultrafast Synthesis of Metal-Layered Hydroxides in a Dozen Seconds for High-Performance Aqueous Zn(Micro-)Battery

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Nano-Micro Letters 2023年第3期15卷 16-31页

作者： Xiangyang Li Fangshuai Chen Bo Zhao Shaohua zhang Xiaoyu Zheng Ying Wang Xuting Jin Chunlong Dai Jiaqi Wang Jing Xie zhipan zhang Yang Zhao Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China

Efficient synthesis of transition metal hydroxides on conductive substrate is essential for enhancing their merits in industrialization of energy storage field.However,most of the synthetic routes at present mainly rely on traditional bottom-up method,which involves tedious steps,time-consuming treatments,or additional alkaline media,and is unfavorable for high-efficiency production.Herein,we present a facile,ultrafast and general avenue to synthesize transition metal hydroxides on carbon substrate within 13 s by Joule-heating method.With high reaction kinetics caused by the instantaneous high temperature,seven kinds of transition metal-layered hydroxides(TM-LDHs)are formed on carbon cloth.Therein,the fastest synthesis rate reaches~0.46 cm^(2)s^(-1).Density functional theory calculations further demonstrate the nucleation energy barriers and potential mechanism for the formation of metal-based hydroxides on carbon substrates.This efficient approach avoids the use of extra agents,multiple steps,and long production time and endows the LDHs@carbon cloth with outstanding flexibility and machinability,showing practical advantages in both common and micro-zinc ion-based energy storage devices.To prove its utility,as a cathode in rechargeable aqueous alkaline Zn(micro-)battery,the NiCo LDH@carbon cloth exhibits a high energy density,superior to most transition metal LDH materials reported so far.

关键词： Ultrafast synthesis Thermal shock Metal-layered hydroxides Zn(micro-)battery

Confined Mnenables effective aerobic oxidation catalysis

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Science China Chemistry 2024年

作者： Desheng Yuan Sicong Ma Xiao Kong Chi zhang Lin Chen Chengsheng Yang Lihua Wang Zhen Liu Lin Ye Yongmei Liu Rui Ma zhipan Liu Yifeng Zhu Yong Cao Xinhe Bao Institute of Advanced Fluorine-Containing Materials Zhejiang Normal University Department of Chemical Physics University of Science and Technology of China School of Materials and Chemistry University of Shanghai for Science and Technology Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Collaborative Innovation Center of Chemistry for Energy Materials Fudan University Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of Sciences Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences State Key Laboratory of Catalysis National Laboratory for Clean Energy Collaborative Innovation Center of Chemistry for Energy Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences

Effective and mild activation of O2is essential but challenging for aerobic oxidation. In heterogeneous catalysis, high-valence manganese oxide(e.g., +4) is known to be active for the oxidation, whereas divalent MnO is ineffective due to its limited capacity to supply surface oxygen and its thermodynamically unstable structure when binding O2in reaction conditions. Inspired by natural enzymes that rely on divalent Mn2+, we discovered that confining Mn2+onto the Mn2O3surface through a dedicated calcination process creates highly active catalysts for the aerobic oxidation of 5-hydroxymethylfurfural, benzyl alcohol, and CO.The Mn2O3-confined Mn2+is undercoordinated and efficiently mediates O2activation, resulting in 2–3 orders of magnitude higher activity than Mn2O3alone. Through low-temperature infrared spectroscopy, we distinguished low-content Mn2+sites at Mn2O3surface, which are difficult to be differentiated by X-ray photoelectron spectroscopy. The combination of in-situ energydispersive X-ray absorption spectroscopy and X-ray diffraction further provides insights into the formation of the newly identified active Mn2+sites. By optimizing the calcination step, we were able to increase the catalytic activity threefold further.The finding offers promising frontiers for exploring active oxidation catalysts by utilizing the confinement of Mn2+and oftenignored calcination skills.

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Cenozoic Fault Distribution Characteristics and Evolution in Qikou Sag of Bohai Basin, China

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Journal of Earth Science 2014年第4期25卷 701-712页

作者： Dongdong zhang Chiyang Liu Yijian Huang Siqian Chen Yi Lu zhipan zhang State Key Laboratory of Continental Dynamics Institute of Oil and Gas Basin Northwest University Research Institute of Exploration & Development Dagang Oilfield Company Petro China

Qikou sag, located in north-center of Huanghua depression in Bohai Basin, is a Cenozoic sag with rich hydrocarbon. As a microcosm of Bohai Basin, the fault characteristics of Cenozoic structural layers in Qikou sag could indicate and record the evolution of Cenozoic stress field in Bohai Basin. Based on the latest 3-D seismic data, the study takes statistics on the fault system of Cenozoic structural layers and analyzes the fault throws of major large faults along the strikes in different periods in Qikou sag, then the fault distribution regularities and the fault direction characteristics in each structural layer are summarized. The result shows that during Cenozoic, the fault activity strength migrates from southwest to northeast and the strikes of faults changes from northwestward in Sha-3 period to nearly east-westward since Sha-1 period.

关键词： Bohai Basin Qikou sag fault statistics tectonic migration.

Recent progress in graphene-based electrodes for flexible batteries

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InfoMat 2020年第3期2卷 509-526页

作者： Chunlong Dai Guoqiang Sun Linyu Hu Yukun Xiao zhipan zhang Liangti Qu Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster ScienceMinistry of EducationSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijingPeople's Republic of China Department of Chemistry Tsinghua UniversityBeijingPeople's Republic of China Key Laboratory for Advanced Materials Processing Technology Ministry of Education of ChinaDepartment of Mechanical EngineeringTsinghua UniversityBeijingPeople's Republic of China

The emerging flexible electronic devices have stimulated the development of flexible batteries,in which flexible electrodes are indispensable components.Graphene,known for its excellent electrical conductivity and mechanical stability,can be used as an ideal flexible substrate.Recently,many efforts have been devoted to graphene-based electrodes for flexible batteries.Herein,this review summarizes recent advances in the development of graphene-based electrodes for various flexible batteries,including metal-ion batteries(ions of Li,Na,Zn,Al,etc.),lithiumsulfur batteries,and metal-air batteries(Li-and Zn-air batteries).Besides,major challenges and future developments of flexible batteries are also discussed.

关键词： flexible batteries flexible electrodes graphen

A cross-linked polyacrylamide electrolyte with high ionic conductivity for compressible supercapacitors with wide temperature tolerance

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Nano Research 2019年第5期12卷 1199-1206页

作者： Xuting Jin Guoqiang Sun Guofeng zhang Hongsheng Yang Yukun Xiao Jian Gao zhipan zhang Liangti Qu Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Key Laboratory of Cluster ScienceMinistry of Education of ChinaSchool of ChemistryBeijing Institute of TechnologyBeijing 100081China

The development of compressible supercapacitors (SCs) that is tolerant to wide temperature range has been severely hindered due to the poor ionic conductivity and absence of extra functions in conventional polymer electrolytes.Herein,a highly conductive and compressible hydrogel polyelectrolyte has been prepared from polyacrylamide cross-linked by methacrylated graphene oxide (MGO-PAM) and the polyelectrolyte can maintain its excellent elasticity at-30 ℃ as well as its original shape at 100 ℃.As a result,the SC based on the MGO-PAM polyelectrolyte outperformed those fabricated with the conventional poly(vinyl alcohol)(PVA)/H2SO4 electrolyte over a wide temperature window between-30 and 100 ℃.Meanwhile,the device shows an excellent cycling stability (capacitance retention of 93.3% after 8,000 cycles at-30 ℃ and 76.5 % after 4,000 cycles under 100 ℃) and a reversible compressibility (a high capacitance retention of 94.1% under 80% compression).Therefore,the MGO-PAM polyelectrolyte enables the fabrication of compressible SCs with a wide operating temperature,rendering new insights for developing next-generation robust and multifunctional energy-storage devices.

关键词： ionic conductivity compressibility wide temperature tolerance supercapacitors polyacrylamide electrolyte

Efficient and Stable Large-Area Perovskite Solar Cells with Inorganic Perovskite/Carbon Quantum Dot-Graded Heterojunction

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Research 2021年第1期2021卷 1274-1283页

作者： Qiang Sun Cai Shen Deyu Wang Tao zhang Huaxia Ban Yan Shen zhipan zhang Xiao-Li zhang Guanjun Yang Mingkui Wang Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhanHubei 430074China Ningbo Institute of Materials Technology&Engineering Chinese Academy of Sciences1219 Zhongguan RoadNingbo 315201China School of Chemistry Beijing Institute of TechnologyBeijing 102488China State Centre for International Cooperation on Designer Low-Carbon&Environmental Materials School of Materials Science and EngineeringZhengzhou University450001China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China

This work reports on a compositionally graded heterojunction for photovoltaic application by cooperating fluorine-doped carbon quantum dots(FCQDs in short)into the CsPbI_(2.5)Br_(0.5)inorganic perovskite layer.Using this CsPbI_(2.5)Br_(0.5)/FCQDs graded heterojunction in conjunction with low-temperature-processed carbon electrode,a power conversion efficiency of 13.53%for 1 cm^(2)all-inorganic perovskite solar cell can be achieved at AM 1.5G solar irradiation.To the best of our knowledge,this is one of the highest efficiency reported for carbon electrode based all-inorganic perovskite solar cells so far,and the first report of 1 cm^(2)carbon counter electrode based inorganic perovskite solar cell with PCE exceeding 13%.Moreover,the inorganic perovskite/carbon quantum dot graded heterojunction photovoltaics maintained over 90%of their initial efficiency after thermal aging at 85°for 1056 hours.This conception of constructing inorganic perovskite/FCQDs graded heterojunction offers a feasible pathway to develop efficient and stable photovoltaics for scale-up and practical applications.

关键词： perovskite inorganic graded

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《伤寒论》误汗原因及避免方法

河南中医 2024年第5期44卷 655-658页

作者：郑志攀河南省人民医院郑州大学人民医院河南大学临床医学院河南郑州410003

汗法是太阳病最重要的治疗方法,文中所载常见的误汗原因有:辨证失误,方证不符;病轻药重,耗伤气阴;病重药轻,病势难截;误治兼加,头绪繁杂;体质偏颇,变证叠出;火疗取汗,误治生变。为避免误汗,临证应注意方证相应,汗法主要适用于太阳伤寒... 详细信息

汗法是太阳病最重要的治疗方法,文中所载常见的误汗原因有:辨证失误,方证不符;病轻药重,耗伤气阴;病重药轻,病势难截;误治兼加,头绪繁杂;体质偏颇,变证叠出;火疗取汗,误治生变。为避免误汗,临证应注意方证相应,汗法主要适用于太阳伤寒及中风证,伤寒为表实证、中风为表虚证,表实证多用麻黄汤,表虚证多用桂枝汤。同时还需注意兼夹病证,随证治之。注意方药轻重缓急,发汗不及可更作服或温覆及啜热稀粥,若发汗太过,则可用温粉粉之。《伤寒论》中的发汗方法多指辛温发散法,另外还有温针、火灸等方法,临证应选择合适的发汗方式。注意因人制宜,酒客、咽喉干燥者、淋家、疮家、衄家、亡血家、汗家、虚寒者慎发汗,在选择麻黄汤、大青龙汤等发汗峻剂时,还要考虑到患者体质的强弱。

关键词：汗法误汗《伤寒论》张仲景

Autophagy targets Hd1 for vacuolar degradation to regulate rice flowering

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Molecular Plant 2022年第7期15卷 1137-1156页

作者： Zhi Hu zhipan Yang Yi zhang Aihong zhang Qingtao Lu Ying Fang Congming Lu Key Laboratory of Photobiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Crop Biology College of Life ScienceShandong Agricultural UniversityTaianShandong 271018China

Flowering time(heading date)is a critical agronomic trait that determines the yield and regional adaptability of crops.Heading date 1(Hd1)is a central regulator of photoperiodic flowering in rice(Oryza sativa).However,how the homeostasis of Hd1 protein is achieved is poorly understood.Here,we report that the nuclear autophagy pathway mediates Hd1 degradation in the dark to regulate flowering.Loss of autophagy function results in an accumulation of Hd1 and delays flowering under both short-day and long-day conditions.In the dark,nucleus-localized Hd1 is recognized as a substrate for autophagy and is subjected to vacuolar degradation via the autophagy protein OsATG8.The Hd1-0sATG8 interaction is required for autophagic degradation of Hd1 in the dark.Our study reveals a new mechanism by which Hd1 protein homeostasis is regulated by autophagy to control rice flowering.Our study also indicates that the regulation of flowering by autophagic degradation of Hd1 orthologs may have arisen over the course of mesangiosperm evolution,which would have increased their flexibility and adaptability to the environment by modulating flowering time.

关键词： autophagy heading date rice Hd1 homeostasis