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| 1 | Room temperature liquid metal:its melting point,dominating mechanism and applications显示文摘The room temperature liquid metal(LM)is recently emerging as a new class of versatile materials with fascinating characteristics mostly originated from its simultaneous metallic and liquid natures.The melting point is a typical parameter to describe the peculiarity of LM,and a pivotal factor to consider concerning its practical applications such as phase change materials(PCMs)and advanced thermal management.Therefore,the theoretical exploration into the melting point of LM is an essential issue,which can be of special value for the design of new LM materials with desired properties.So far,some available strategies such as molecular dynamics(MD)simulation and classical thermodynamic theory have been applied to perform correlative analysis.This paper is primarily dedicated to performing a comprehensive overview regarding typical theoretical strategies on analyzing the melting points.It,then,presents evaluations on several factors like components,pressure,size and supercooling that may be critical for melting processes of liquid metal.After that,it discusses applications associated with the characteristic of low melting points of LM.It is expected that a great many fundamental and practical works are to be conducted in the coming future. | Junheng FU Chenglin ZHANG Tianying LIU Jing LIU | 2020 | Frontiers in Energy2020，14，1： | 3 |
| 2 | Perspective on gallium-based room temperature liquid metal batteries显示文摘Recent years have witnessed a rapid development of deformable devices and epidermal electronics that are in urgent request for flexible batteries.The intrinsically soft and ductile conductive electrode materials can offer pivotal hints in extending the lifespan of devices under frequent deformation.Featuring inherent liquidity,metal-licity,and biocompatibility,Ga-based room-temperature liquid metals(GBRTLMs)are potential candidates to fulfill the requirement of soft batteries.Herein,to illustrate the glamour of liquid components,high-temperature liquid metal batteries(HTLMBs)are briefly summarized from the aspects of principle,application,advantages,and drawbacks.Then,Ga-based liquid metals as main working electrodes in primary and secondary batteries are reviewed in terms of battery configurations,working mechanisms,and fiinctions.Next,Ga-based liquid metals as auxiliary working electrodes in lithium and nonlithium batteries are also discussed,which work as functional self-healing additives to alleviate the degradation and enhance the durability and capacity of the battery system.After that,Ga-based liquid metals as interconnecting electrodes in multi-scenarios including photovoltaics solar cells,generators,and supercapacitors(SCs)are interpreted,respectively.The summary and perspective of Ga-based liquid metals as diverse battery materials are also focused on.Finally,it was suggested that tremendous endeavors are yet to be made in exploring the innovative battery chemistry,inherent reaction mechanism,and multifunctional integration of Ga-based liquid metal battery systems in the coining future. | Zerong XING Junheng FU Sen CHEN Jianye GAO Ruiqi ZHAO Jing LIU | 2022 | Frontiers in Energy2022，16，1： | 3 |
| 3 | Liquid metal hydraulics paradigm:Transmission medium and actuation of bimodal signals显示文摘In this article,room temperature gallium-based fluids(RTGFs)with unique thermal and conductive properties are proposed as a transmission fluid for the force carrying medium of hydraulics,which rectify the lack of the multi-functional hydraulic roles of liquid metal(LM).The typical physical properties of RTGFs and comparative conventional hydraulic fluids(commercial hydraulic oil and deionized water),such as thermal stability and rheological characteristics,are evaluated.Experimental and numerical methods,then,were adopted to clarify the force transmission performance of RTGFs and commercial hydraulic oils,as well as the influence of temperature fields on the viscosity of fluids.The results disclosed that the advantages of inherent flame resistance,wide liquid temperature range,and the viscosity changing slightly with temperature made RTGFs potential in finding efficient application in the hydraulics as new working fluids.Finally,for illustration,the rigid and flexible actuators driven by RTGFs were designed as hydraulic fluid and demonstrated their capabilities in grasping objects with various shapes and weights,respectively.And the tunable stiffness of such a flexible actuator was enabled via the solid-liquid phase change of LM.Additionally,a frequency-adjustable antenna was manufactured and showcased owing to the introduced transformable electromagnetic behaviors of LM.Overall,the gallium-based LM fluids with thermoelectrical and mechanical multimodal signal medium would serve as a potential candidate for future complex multifunctional signal transmission systems. | FU JunHeng GAO JianYe QN Peng LI DongDong YU DeHai SUN Peng HE ZhiZhu DENG ZhongShan LIU Jing | 2022 | Science China(Technological Sciences)2022，65，1： | 1 |
| 4 | The Enhancement of Selectivity and Activity for Two-Electron Oxygen Reduction Reaction by Tuned Oxygen Defects on Amorphous Hydroxide Catalysts显示文摘Amorphous catalysts,thanks to their uniquely coordinated unsaturated properties and abundance of defect sites,tend to possess higher activity and selectivity than their crystalline counterparts.In this work,we report a facile and general solventcontrolled precipitation method to prepare hybrids of graphene oxide(GO)supporting amorphous metal hydroxide[A-M(OH)_(x)/GO,M=Cu,Co,and Mn],which provides us with tangible materials to study the structure–performance relationship of various amorphous oxides.The systematic investigation of A-Cu(OH)_(2)/GO by coupling ex situ/in situ characteristic techniques with electrochemical studies reveals that electrocatalytic activity and selectivity toward a two-electron oxygen reduction reaction(ORR)is highly dependent on the coordinated Cu catalytic sites and the disordered structure of A-Cu(OH)_(2).In situ X-ray absorption near-edge structure(XANES)and density functional theory(DFT)calculation verify that the degree of OH*poisoning(ΔG0 OH*)tuned by three-OH-coordinated Cu sites in amorphous structures plays a crucial role in selective catalysis of ORR for H_(2)O_(2) production.The optimized A-Cu(OH)_(2)/GO shows superior activity and high selectivity(~95%)toward H_(2)O_(2),as demonstrated by a zinc–air battery capable of on-site H_(2)O_(2) production with a rate as high as 3401.5 mmol h^(−1) g^(−1). | Junheng Huang Changle Fu Junxiang Chen Nangan Senthilkumar Xinxin Peng Zhenhai Wen | 2022 | CCS Chemistry2022，4，2： | 0 |
| 5 | Effects of Shenlian formula(参连方)on microbiota and inflammatory cytokines in adults with type 2 diabetes:a double-blind randomized clinical trial显示文摘OBJECTIVES:To observe the efficacy of Shenlian formula(SL formula,参连方),which consist of Huanglian(Rhizoma Coptidis)and Renshen(Radix Ginseng),in the treatment of type 2 diabetes mellitus(T2DM)and explore the effects on gut microbiota and serum inflammatory cytokines.METHODS:In a double-blind,randomized,placebocontrolled parallel-group clinical trial,31 adults with T2DM were randomly allocated to receive the SL formula or placebo for 12 weeks.Body mass index(BMI),blood lipid indices,glycemic biomarkers including glycated hemoglobin(HbA1C),fasting plasma glucose(FPG),postprandial blood glucose(PBG),fasting insulin levels(FIL),fasting C-peptide(C-P),homoeostasis model assessment for insulin resistance(HOMA-IR)and inflammatory cytokines were assessed at baseline and 12 weeks.The contents of gut microbiota were determined by pyrosequencing of the V3-V4 regions of 16S rRNA genes.RESULTS:Sixteen cases were allocated in the treatment group and 15 in the placebo group.Compared with the placebo,SL formula resulted in a higher significant reduction in PBG[(-1.318±0.772)vs(-0.008±1.404)mmol/L,P=0.003],BMI[(-0.611±0.524)vs(0.957±2.212)kg/m2,P=0.01],FIL[(-1.627±6.268)vs(3.976±6.85)μIU/mL,P=0.02],HOMA-IR[(-0.530±1.461)vs(1.511±2.288),P=0.006],and C-reactive protein(CRP)[(-1.307±0.684)vs(0.828±0.557)mg/L,P=0.04].In terms of gut microbiota,compared with the placebo,the SL formula resulted in a significant decrease in species richness and evenness.CONCLUSIONS:The SL formula showed the efficacy to improve postprandial blood glucose,insulin resistance,BMI and CRP levels.In addition,it could reduce the total number,richness and evenness of species,meanwhile increase the abundance of probiotics to modulate the structure of gut microbiota in patients with T2DM.However,further studies are required for exploring the deeper mechanism of TCM on gut microbiota. | JIANG Li FU Qiang WANG Shidong ZHAO Jinxi CHEN Yu LI Jiayue XIAO Yonghua HUANG Weijun SUN Ruixi XIAO Yao SHEN Aijia WANG Junheng LIU Jiangteng FU Xiaozhe LI Yuanyuan ZHAO Yu XUE Taiqi | 2023 | Journal of Traditional Chinese Medicine2023，43，4： | 0 |
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