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Pulse-potential electrochemistry to boost real-life application of pseudocapacitive dual-doped polypyrrole

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SmartMat 2022年第4期3卷 644-656页

作者： fang-fang sun Wen-Han Li Zi-Hang Huang Wenping sun Yuhai Dou Ding Yuan Baohua Jia Tianyi Ma Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyangChina School of Science RMIT UniversityMelbourneVictoriaAustralia School of Materials Science and Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhouChina Shandong Institute of Advanced Technology JinanChina Institute for Superconducting&Electronic Materials University of WollongongWollongongAustralia

Polypyrrole(PPy)is a very promising pseudocapacitive electrode material for ***,the poor electrochemical performances and cycling stability caused by volumetric change and counterion drain severely limited its practical application and ***,we present a pulsepotential polymerization strategy for uniformly depositing a dual-doped PPy with ordered and shorter molecular structure by balancing the concentration *** a strategy ensures more homogeneous stress distribution of PPy during ultralong cycling tests and improves the cycle ***,the pulse-potential polymerized PPy with dual anion doping behavior induces enhanced protonation level and improved electrical conductivity,which boosting the charge transfer ***,the as-synthesized PPy exhibits a remarkable capacitance performance(7250 mF/cm^(2)@3 mA/cm^(2)),outstanding rate capability(3073 mF/cm^(2)@200 mA/cm^(2))and a long cycle *** assembled symmetric and asymmetric supercapacitors(ASC)exhibit good energy densities(0.8 mWh/cm^(2) for ASC and 0.5 mWh/cm^(2) for symmetric supercapacitor),and excellent durability with zero capacitive loss after 35,000 *** addition,we have fabricated small pouch devices,which can effectively operate a variety of electronic products(including the high-voltage 5 V smartphone,and tablet)and well withstand the external extreme tests during operation,demonstrating the quantitative investigation of the real-life application of aqueous supercapacitors.

关键词： dual-doping energy storage polypyrrole pouch-type device pseudocapacitive pulse-potential polymerization

A single copy of large tumor suppressor 1 or large tumor suppressor 2 is sufficient for normal hematopoiesis

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Chinese Medical Journal 2020年第16期133卷 1943-1951页

作者： Zhi-Gang Li Xue-Mei Fu Cheng-Yan Chai fang-fang sun Fei-Fei Xiao Yong-Xiu Huang Kai Yao Jie-Ping Chen Yu Hou Department of Hematology Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 430008China Medical Research Center Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 430008China College of Life Sciences and Health Wuhan University of Science and TechnologyWuhanHubei 430081China

Background:Hematopoietic stem cells(HSCs)have the ability to differentiate into all subsets of blood cells and *** tumor suppressor 1(LATS1)and large tumor suppressor 2(LATS2)kinases are essential for cell cycle regulation,organism fitness,genome integrity,and cancer ***,we investigated whether Lats1 and Lats2 are critical for the maintenance of the selfrenewal and quiescence capacities of HSCs in ***:Quantitative reverse transcription-polymerase chain reaction was used to determine the expression levels of Lats1 and Lats2 in subsets of progenitor cells and mature bone marrow cells.A clustered regularly interspaced short palindromic repeats system was used to generate Lats1 or Lats2 knockout *** blood cell counts were used to compare the absolute number of white blood cells,lymphocytes,monocytes,neutrophils,and platelets between Lats1 or Lats2 heterozygotes and *** cytometry was used to assess the size of hematopoietic progenitor cells(HPCs)and HSC pools in Lats1 or Lats2 heterozygotes and *** comparison between the two groups was analyzed using Student’s t ***:Lats1 and Lats2 were widely expressed in hematopoietic cells with higher expression levels in primitive hematopoietic cells than in mature ***1 or Lats2 knockout mice were generated,with the homozygotes showing embryonic *** size of the HPC and HSC pools in Lats1(HPC:wild-type[WT]***,220,426.77±54,384.796 vs.221,149.4±42,688.29,P=0.988;HSC:WT ***,2498.932±347.856 vs.3249.763±370.412,P=0.105)or Lats2(HPC:WT ***,425,540.52±99,721.86 vs.467,127.8±89,574.48,P=0.527;HSC:WT ***,4760.545±1518.01 vs.5327.437±873.297,P=0.502)heterozygotes were not ***,the depletion of Lats1 or Lats2 did not affect the overall survival of the heterozygotes(Lats1:P=0.654;Lats2:P=0.152).Conclusion:These results indicate that a single allele of Lats1 or Lats2 may be sufficient for nor

关键词： Hippo pathway Hematopoietic stem cells Stem cell self-renewal

The interaction between KIF21A and KANK1 regulates dendritic morphology and synapse plasticity in neurons

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Neural Regeneration Research 2025年第1期20卷 209-223页

作者： Shi-Yan sun Lingyun Nie Jing Zhang Xue fang Hongmei Luo Chuanhai Fu Zhiyi Wei Ai-Hui Tang Hefei National Research Center for Physical Sciences at the Microscale CAS Key Laboratory of Brain Function and DiseaseMinistry of Education Key Laboratory for Membrane-less Organelles and Cellular DynamicsDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina CAS Center for Excellence in Molecular Cell Sciences Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Neurobiology School of Life SciencesSouthern University of Science and TechnologyShenzhenGuangdong ProvinceChina Brain Research Center Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina

Morphological alterations in dendritic spines have been linked to changes in functional communication between neurons that affect learning and ***-4 KIF21A helps organize the microtubule-actin network at the cell cortex by interacting with KANK1;however,whether KIF21A modulates dendritic structure and function in neurons remains *** this study,we found that KIF21A was distributed in a subset of dendritic spines,and that these KIF21A-positive spines were larger and more structurally plastic than KIF21A-negative ***,the interaction between KIF21A and KANK1 was found to be critical for dendritic spine morphogenesis and synaptic *** of either KIF21A or KANK1 inhibited dendritic spine morphogenesis and dendritic branching,and these deficits were fully rescued by coexpressing full-length KIF21A or KANK1,but not by proteins with mutations disrupting direct binding between KIF21A and KANK1 or binding between KANK1 and *** down KIF21A in the hippocampus of rats inhibited the amplitudes of long-term potentiation induced by high-frequency stimulation and negatively impacted the animals’cognitive *** together,our findings demonstrate the function of KIF21A in modulating spine morphology and provide insight into its role in synaptic function.

关键词： actin cytoskeleton dendrite KANK1 KIF21A microtubule spine morphology spine synaptic plasticity talin1

Electrode/Electrolyte Optimization-Induced Double-Layered Architecture for High-Performance Aqueous Zinc-(Dual) Halogen Batteries

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NANO-MICRO LETTERS 2025年第1期17卷 1-17页

作者： Zhou, Chengwang Ding, Zhezheng Ying, Shengzhe Jiang, Hao Wang, Yan fang, Timing Zhang, You sun, Bing Tang, Xiao Liu, Xiaomin Qingdao Univ Sch Text & Clothing Sch Chem & Chem Engn Qingdao 266071 Shandong Peoples R China Univ Technol Sydney Fac Sci Ctr Clean Energy Technol Sch Math & Phys Sci Ultimo NSW 2007 Australia Henan Normal Univ Sch Chem & Chem Engn Xinxiang 453007 Henan Peoples R China

A double-layered protective film based on zinc-based coordination compound and ZnF2-rich solid electrolyte interphase layer has been successfully fabricated on the zinc metal anode via electrode/electrolyte synergistic *** double-layered architecture can effectively modulate Zn2+ flux and suppress the zinc dendrite growth, thus facilitating the uniform zinc *** as-developed zinc-(dual) halogen batteries based on double-layered protective film can present high areal capacity and satisfactory cycling stability. Aqueous zinc-halogen batteries are promising candidates for large-scale energy storage due to their abundant resources, intrinsic safety, and high theoretical capacity. Nevertheless, the uncontrollable zinc dendrite growth and spontaneous shuttle effect of active species have prohibited their practical implementation. Herein, a double-layered protective film based on zinc-ethylenediamine tetramethylene phosphonic acid (ZEA) artificial film and ZnF2-rich solid electrolyte interphase (SEI) layer has been successfully fabricated on the zinc metal anode via electrode/electrolyte synergistic optimization. The ZEA-based artificial film shows strong affinity for the ZnF2-rich SEI layer, therefore effectively suppressing the SEI breakage and facilitating the construction of double-layered protective film on the zinc metal anode. Such double-layered architecture not only modulates Zn2+ flux and suppresses the zinc dendrite growth, but also blocks the direct contact between the metal anode and electrolyte, thus mitigating the corrosion from the active species. When employing optimized metal anodes and electrolytes, the as-developed zinc-(dual) halogen batteries present high areal capacity and satisfactory cycling stability. This work provides a new avenue for developing aqueous zinc-(dual) halogen batteries.

关键词： Zn metal anodes Double-layered protective film Electrode/electrolyte optimization Aqueous zinc-(dual) halogen batteries

Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe sun Weilin Xu Jian fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

纯Ti(BH_4)_3·5NH_3的制备及储氢性能

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复旦学报（自然科学版） 2017年第3期56卷 301-308页

作者：雷冰冰杨笑迪郑雄飞郭艳辉方方孙大林复旦大学材料科学系上海200433 复旦大学先进材料实验室上海200433

氨合硼氢化钛是一类放氢温度适宜的高容量储氢材料,但已报道的通过球磨法制备的氨合硼氢化钛通常含有质量分数42%以上的LiCl杂质,降低了体系总含氢量的同时也为氨合硼氢化钛本征放氢性能的表征带来了困难.因此,纯氨合硼氢化钛的制备和... 详细信息

氨合硼氢化钛是一类放氢温度适宜的高容量储氢材料,但已报道的通过球磨法制备的氨合硼氢化钛通常含有质量分数42%以上的LiCl杂质,降低了体系总含氢量的同时也为氨合硼氢化钛本征放氢性能的表征带来了困难.因此,纯氨合硼氢化钛的制备和性能表征十分必要.本文以钛酸四异丙酯、乙硼烷、四氢呋喃和NH_3为初始原料,通过先制备前驱体Ti(BH_4)_3·2THF,然后再氨化的二步反应首次成功合成纯Ti(BH_4)_3·5NH_3,并对前驱体和氨合硼氢化钛的组成、结构和放氢性能进行系统地研究.结果表明,前驱体Ti(BH_4)_3·2THF属于斜方晶系,Pbcn空间群,且在室温下能稳定存在,是制备氨合硼氢化钛的良好前驱体;纯Ti(BH_4)_3·5NH_3具有良好的放氢性能,于75℃开始放氢,至200℃释放质量分数约10%的氢气.

关键词：储氢材料氨合硼氢化钛合成放氢性能

江蓠中类菌孢素氨基酸(MAAs)分离纯化及其成分分析

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水产学报 2011年第12期35卷 1829-1836页

作者：金宁宁张朝辉李八方严芳芳孙京沙中国海洋大学食品科学与工程学院

存在于海洋生物中,尤其是藻类中的类菌孢素氨基酸(mycosporine-like amino acids,MAAs),是一种吸收紫外线的物质,可用于紫外线防护品的原料,具有商业开发的前景。对湛江沿海产江蓠中MAAs进行了分离和结构鉴定,确定江蓠MAAs的主要组成及... 详细信息

存在于海洋生物中,尤其是藻类中的类菌孢素氨基酸(mycosporine-like amino acids,MAAs),是一种吸收紫外线的物质,可用于紫外线防护品的原料,具有商业开发的前景。对湛江沿海产江蓠中MAAs进行了分离和结构鉴定,确定江蓠MAAs的主要组成及比例。利用C-18 Sep-Pak固相萃取柱和半制备型HPLC对湛江产江蓠中MAAs成分进行分离纯化。根据化合物的特征、紫外吸收波长和波谱数据鉴定其主要成分的结构,并结合参考文献确定湛江产江蓠MAAs的4种主要成分是palythine、shinorine、palythinol和porphyra-334,其比例约为4.9∶1∶1.2∶9.9。同时,比较了UV法和HPLC法对湛江产江蓠MAAs主要成分porphyra-334含量检测的准确度,建立了两种检测方法的拟合曲线,并通过试验验证,最终确立了HPLC对MAAs主要组成成分的检测方法。

关键词：江蓠类菌孢素氨基酸 ESI-TOF/MS 检测方法

Inter-Skeleton Conductive Routes Tuning Multifunctional Conductive Foam for Electromagnetic Interference Shielding, Sensing and Thermal Management

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NANO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： Li, Xufeng Chen, Chunyan Li, Zhenyang Yi, Peng Zou, Haihan Deng, Gao fang, Ming He, Junzhe sun, Xin Yu, Ronghai Shui, Jianglan Pan, Caofeng Liu, Xiaofang Beihang Univ Sch Mat Sci & Engn Beijing 100191 Peoples R China Beihang Univ Inst Atom Mfg Beijing 100191 Peoples R China Tianmushan Lab Xixi Octagon City Hangzhou 310023 Peoples R China Beijing Inst Environm Features Sci & Technol Electromagnet Scattering Lab Beijing 100854 Peoples R China

Unique inter-skeleton conductive films are constructed in polymer *** resistance change of the foam can reach four orders of magnitude under *** foam exhibits strain-adaptive electromagnetic interference shielding performance, anti-interference pressure sensor with high sensitivity over a wide pressure range and compression-regulated Joule heating function. Conductive polymer foam (CPF) with excellent compressibility and variable resistance has promising applications in electromagnetic interference (EMI) shielding and other integrated functions for wearable electronics. However, its insufficient change amplitude of resistance with compressive strain generally leads to a degradation of shielding performance during deformation. Here, an innovative loading strategy of conductive materials on polymer foam is proposed to significantly increase the contact probability and contact area of conductive components under compression. Unique inter-skeleton conductive films are constructed by loading alginate-decorated magnetic liquid metal on the polymethacrylate films hanged between the foam skeleton (denoted as AMLM-PM foam). Traditional point contact between conductive skeletons under compression is upgraded to planar contact between conductive films. Therefore, the resistance change of AMLM-PM reaches four orders of magnitude under compression. Moreover, the inter-skeleton conductive films can improve the mechanical strength of foam, prevent the leakage of liquid metal and increase the scattering area of EM wave. AMLM-PM foam has strain-adaptive EMI shielding performance and shows compression-enhanced shielding effectiveness, solving the problem of traditional CPFs upon compression. The upgrade of resistance response also enables foam to achieve sensitive pressure sensing over a wide pressure range and compression-regulated Joule heating function.

关键词： Inter-skeleton conductive films Conductive polymer foam Liquid metal Electromagnetic interference shielding

Inhibiting ceramide synthase 5 expression in microglia decreases neuroinflammation after spinal cord injury

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Neural Regeneration Research 2025年第10期20卷 2955-2968页

作者： Wei Zhang Yubao Lu Ruoqi Shen Yingjie Wu Chenrui Liu Xingxing fang Liangming Zhang Bin Liu Limin Rong Department of Spine Surgery The Third Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdong ProvinceChina National Medical Products Administration(NMPA)Key Laboratory for Quality Research and Evaluation of Cell Products GuangzhouGuangdong ProvinceChina Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery GuangzhouGuangdong ProvinceChina Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery GuangzhouGuangdong ProvinceChina

Microglia,the resident monocyte of the central nervous system,play a crucial role in the response to spinal cord ***,the precise mechanism remains *** investigate the molecular mechanisms by which microglia regulate the neuroinflammatory response to spinal cord injury,we performed single-cell RNA sequencing dataset analysis,focusing on changes in microglial *** found that the MG1 subpopulation emerged in the acute/subacute phase of spinal cord injury and expressed genes related to cell pyroptosis,sphingomyelin metabolism,and neuroinflammation at high ***,we established a mouse model of contusive injury and performed intrathecal injection of siRNA and molecular inhibitors to validate the role of ceramide synthase 5 in the neuroinflammatory responses and pyroptosis after spinal cord ***,we established a PC12-BV2 cell co-culture system and found that ceramide synthase 5 and pyroptosis-associated proteins were highly expressed to induce the apoptosis of neuron *** ceramide synthase 5 expression in a mouse model of spinal cord injury effectively reduced ***,ceramide synthase 5-induced pyroptosis was dependent on activation of the NLRP3 signaling *** ceramide synthase 5 expression in microglia in vivo reduced neuronal apoptosis and promoted recovery of neurological ***2g7 formed a“bridge”between sphingolipid metabolism and ceramide synthase 5-mediated cell death by inhibiting the NLRP3 signaling ***,these findings suggest that inhibiting ceramide synthase 5 expression in microglia after spinal cord injury effectively suppressed microglial pyroptosis mediated by NLRP3,thereby exerting neuroprotective effects.

关键词： ceramide synthase 5 gasdermin D microglia neuroinflammation NLRP3 nuclear factor kappa B Pla2g7 pyroptosis sphingomyelin metabolism spinal cord injury