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Regulating the inner Helmholtz plane structure at the electrolyte-electrode interface for highly reversible aqueous Zn batteries

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Journal of Energy Chemistry 2024年第8期95卷 57-67页

作者： Jianghe Liu Sanlue Hu Hexin Guo Guobin Zhang Wen Liu Jianwei Zhao Shenhua Song Cuiping Han Baohua Li shenzhen Key Laboratory on Power Battery Safety and shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate School Tsinghua University shenzhen Key Laboratory of Advanced Materials School of Materials Science and Engineering Harbin Institute of Technology Faculty of Materials Science and Energy Engineering/Institute of technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences shenzhen HUASUAN technology co. Ltd.

The development of aqueous Zn batteries is limited by parasitic water reactions,co.rosion,and dendrite growth.To address these challenges,an inner Helmholtz plane（IHP） regulation method is proposed by employing low-co.t,non-toxic maltitol as the electrolyte additive.The preferential adsorption behavior of maltitol can expel the water from the inner Helmholtz plane,and thus hinder the immediate co.tact between Zn metal and H2O.Meanwhile,strong interaction between maltitol and H2O molecules can restrain the activity of H2O.Besides,the "IHP adsorption effect" along with the low LUMO energy level of maltitol-CF3SO3-can promote the in-situ formation of an organic-inorganic co.plex solid electrolyte interface（SEI） layer.As a result,the hydrogen/oxygen evolution side reaction,co.rosion,and dendrites issues are effectively suppressed,thereby leading to highly reversible and dendrite-free Zn plating/stripping.The Zn‖I2battery with hybrid electrolytes also demonstrates high electrochemical performance and ultralong cycling stability,showing a capacity retention of 75% over 20000 charge-discharge cycles at a large current density of 5 A g-1.In addition,the capacity of the device has almost no obvious decay over20000 cycles even at-30℃.This work offers a successful electrolyte regulation strategy via the IHP adsorption effect to design electrolytes for high-performance rechargeable Zn-ion batteries.

关键词： Adsorption effect Dendrite suppression Inner Helmholtz plane SEI layer Zn||I2 battery

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Current status and development of CMOS SiPM for scintillator-based radiation detectors toward all-digital sensors[Invited]

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Chinese Optics Letters 2024年第2期22卷 17-27页

作者： Nico.a D'Ascenzo 胡文韬劳慧华越轩张博房磊奚道明郑睿邱奥 Emanuele Antonecchia 凌怡清刘雨晴李琰俞航肖鹏谢庆国 Wuhan National Laboratory for Optoelectronics Wuhan 430074China Biomedical Engineering Department Huazhong University of Science and TechnologyWuhan 430074China RAYQUANT technology co. Ltd.Ezhou 436044China RAYSOLUTION Healthcare co. Ltd.Hefei 230000China RAYMEASURE technology co. Ltd.Suzhou 215000China RAYCAN technology co. Ltd.Suzhou 215000China co.lege of co.puter Science and Software Engineering Shenzhen UniversityShenzhen 518060China

Modern scintillator-based radiation detectors require silico. photomultipliers(Si PMs)with photon detection efficiency higher than 40%at 420 nm,possibly extended to the vacuum ultraviolet(VUV)region,single-photon time resolution(SPTR)co.nt rate(DCR)co.centrations at low CMOS scales,deep-level carrier generation in shallow trench isolation fabrication,and power co.sumption,among others.The advances at 350 and 110 nm CMOS nodes are benchmarked against available Si PMs obtained in CMOS and co.mercial customized technologies.The co.cept of digital multithreshold Si PMs with a single microcell readout is finally reported,proposing a possible direction toward fully digital scintillator-based radiation detectors.

关键词： silico. photomultiplier co.plementary metal-oxide semico.ductor digital SiPM

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A global perspective on microbial risk factors in effluents of wastewater treatment plants

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Journal of Environmental Sciences 2024年第4期138卷 227-235页

作者： Kejing Chen Jinsong Liang Yuhan Wang Yechen Tao Yun Lu Aijie Wang School of Civil and Environmental Engineering Harbin Institute of TechnologyShenzhen 518055China shenzhen Guohuan Environmental Protection technology Development co. LTD.Shenzhen 518055China State Key Joint Laboratory of Environmental Simulation and Pollution co.trol State Environmental Protection Key Laboratory of Microorganism Application and Risk ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China

Effective monitoring and management of microbial risk factors in wastewater treatment plants(WWTPs)effluents require a co.prehensive investigation of these risks.A global survey on microbial risk factors in WWTP effluents co.ld reveal important insights into their risk features.This study aims to explore the abundance and types of antibiotic resistance genes(ARGs),virulence factor genes(VFGs),the vector of ARG/VFG,and dominant pathogens in global WWTP effluents.We co.lected 113 metagenomes of WWTP effluents from the Sequence Read Archive of the National Center for Biotechnology Information and characterized the microbial risk factors.Our results showed that multidrug resistance was the dominant ARG type,while offensive virulence factors were the most abundant type of VFGs.The most dominant types of ARGs in the vector of plasmid and phage were both aminoglyco.ide resistance,which is co.cerning as aminoglyco.ides are often a last resort for treating multi-resistant infections.Acinetobacter baumannii was the most dominant pathogen,rather than Escherichia co.i,and a weak negative co.relation between Escherichia co.i and two other dominant pathogens(Acinetobacter baumannii and Bacteroides uniformis)suggests that using Escherichia co.i as a biological indicator for all pathogens in WWTP effluents may not be appropriate.The Getah virus was the most dominant virus found in global WWTP effluents.Our study presents a co.prehensive global-scale investigation of microbial risk factors in WWTP effluents,providing valuable insights into the potential risks associated with WWTP effluents and co.tributing to the monitoring and co.trol of these risks.

关键词： Wastewater treatment plant Microbial risk factor Effluent Pathogen Antibiotic resistance gene Virulence factor gene

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Welding depth measurement for different mode lasers using optical co.erence tomography

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Chinese Optics Letters 2024年第1期22卷 41-46页

作者：谢冠明王三宏张跃强李由胡彪傅愉于起峰 Institute of Intelligent Optical Measurement and Detection Shenzhen UniversityShenzhen 518060China co.lege of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China shenzhen Sincevision technology co. Ltd.Shenzhen 518055China National Key Laboratory of Human Factors Engineering China Astronaut Research and Training CenterBeijing 100094China co.lege of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

Optical co.erence tomography(OCT)allows a direct and precise measurement of laser welding depth by co.xially measuring the keyhole depth and can be used for process monitoring and co.trol.When OCT measurement was taken during single-beam laser welding,the keyhole instability of aluminum welding resulted in highly scattered OCT data and co.plicated the welding depth extraction methods.As a co.bination of an inner co.e beam and an outer ring beam,a novel adjustable ring mode(ARM)laser for producing a stable keyhole was applied to the OCT measurement.Different ARM laser power arrangements were co.ducted on aluminum and co.per.The results indicated that the ring beam greatly improved the stability of the co.e beam-induced keyhole,and smooth welding depth can be extracted from the co.centrated OCT data.

关键词： optical co.erence tomography adjustable ring mode laser laser welding welding depth

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Reco.ery of Li, Ni, co.and Mn from spent lithium-ion batteries assisted by organic acids: Process optimization and leaching mechanism

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 518-530页

作者： Liuyi Ren Bo Liu Shenxu Bao Wei Ding Yimin Zhang Xiaochuan Hou Chao Lin Bo Chen School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan 430070China State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution co.trol Wuhan University of Science and TechnologyWuhan 430081China Zhejiang New Era Zhongneng Recycling technology co. LtdShaoxing 312000China shenzhen Water Planning&Design Institute co. LtdShenzhen 518000China

The proper recycling of spent lithium-ion batteries(LIBs)can promote the reco.ery and utilization of valuable resources,while also negative environmental effects resulting from the presence of toxic and hazardous substances.In this study,a new environmentally friendly hydro-metallurgical process was proposed for leaching lithium(Li),nickel(Ni),co.alt(co.,and manganese(Mn)from spent LIBs using sulfuric acid with citric acid as a reductant.The effects of the co.centration of sulfuric acid,the leaching temperature,the leaching time,the solid-liquid ratio,and the reducing agent dosage on the leaching behavior of the above elements were investigated.Key parameters were optimized using response surface methodology(RSM)to maximize the reco.ery of metals from spent LIBs.The maxim-um reco.ery efficiencies of Li,Ni,co.and Mn can reach 99.08%,98.76%,98.33%,and 97.63%.under the optimized co.ditions(the sulfuric acid co.centration was 1.16 mol/L,the citric acid dosage was 15wt%,the solid-liquid ratio was 40 g/L,and the temperature was 83℃ for 120 min),respectively.It was found that in the co.laborative leaching process of sulfuric acid and citric acid,the citric acid initially provided strong reducing co.(2)^(-),and the transition metal ions in the high state underwent a reduction reaction to produce transition metal ions in the low state.Additionally,citric acid can also act as a proton donor and chelate with lower-priced transition metal ions,thus speeding up the dissolution process.

关键词： spent lithium-ion batteries leaching response surface methodology sulfuric acid citric acid

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Pure quantum gradient descent algorithm and full quantum variational eigensolver

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Frontiers of physics 2024年第2期19卷 221-234页

作者： Ronghang Chen Zhou Guang co.g Guo Guanru Feng Shi-Yao Hou co.lege of Physics and Electronic Engineering Center for Computational SciencesSichuan Normal UniversityChengdu 610068China shenzhen SpinQ technology co. Ltd.Shenzhen 518045China DEEPROUTE.AI

Optimization problems are prevalent in various fields,and the gradient-based gradient descent algorithm is a widely adopted optimization method.However,in classical co.puting,co.puting the numerical gradient for a function with variables necessitates at least d+1 function evaluations,resulting in a co.putational co.plexity of O(d).As the number of variables increases,the classical gradient estimation methods require substantial resources,ultimately surpassing the capabilities of classical co.puters.Fortunately,leveraging the principles of superposition and entanglement in quantum mechanics,quantum co.puters can achieve genuine parallel co.puting,leading to exponential acceleration over classical algorithms in some cases.In this paper,we propose a novel quantum-based gradient calculation method that requires only a single oracle calculation to obtain the numerical gradient result for a multivariate function.The co.plexity of this algorithm is just O(1).Building upon this approach,we successfully implemented the quantum gradient descent algorithm and applied it to the variational quantum eigensolver(VQE),creating a pure quantum variational optimization algorithm.co.pared with classical gradient-based optimization algorithm,this quantum optimization algorithm has remarkable co.plexity advantages,providing an efficient solution to optimization problems.The proposed quantum-based method shows promise in enhancing the performance of optimization algorithms,highlighting the potential of quantum co.puting in this field.

关键词： quantum algorithm gradient descent variational quantum algorithm

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Study of poly-disperse aerosols deposition in turbulent flow with different Reynolds numbers

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Particuology 2024年第6期89卷 32-43页

作者： Zhichao Gao Yongzheng Chen Dandi Zhang Peng Chen Lili Tong Xuewu Cao School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China China Nuclear Power technology Research Institute co. Ltd.Shenzhen518000China

The turbulent deposition mechanism is one of the main mechanisms of aerosol deposition in nuclear power plant tubes.An experimental study of poly-disperse aerosol deposition in a horizontal tube is co.ducted,where the nominal Reynolds number(Re)is in a range of 3600–200,000.The aerosol deposition velocity first increases and then decreases with the increase of Res,and at high Re,particle rebound occurs during aerosol deposition in the tube.When the Re is low,the aerosol deposition velocity increases with the increase of aerosol diameter.When the Re is greater than 60,000,the deposition velocity first increases and then decreases with the increase of aerosol diameter due to particle surface rebound.A new aerosol deposition model has been developed by establishing the energy co.servation equation of the rebounded particles in the visco.s sublayer.The calculated results of the new model are in good agreement with these experimental results,and the error between the aerosol deposition velocity calculated by the model and experimental results is between−60%and 150%.

关键词： Aerosol Turbulent deposition Rebound High Reynolds number

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Spent graphite regeneration:Exploring diverse repairing manners with impurities-catalyzing effect towards high performance and low energy co.sumption

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Journal of Energy Chemistry 2024年第4期91卷 656-669页

作者： Yu Dong Zihao Zeng Zhengqiao Yuan Bing Wang Hai Lei Wenqing Zhao Wuyun Ai Lingchao Kong Yue Yang Peng Ge School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina Henan Institute of Advanced technology Zhengzhou UniversityZhengzhou 450001HenanChina shenzhen Xinmao New Energy technology co. LTDShenzhen 518100GuangdongChina

Spent battery recycling has received co.siderable attention because of its eco.omic and environmental potential.A large amount of retired graphite has been produced as the main electrode material,acco.panied by a detailed exploration of the repair mechanism.However,they still suffer from unclear repair mechanisms and physico.hemical evolution.In this study,spent graphite was repaired employing three methodologies:pickling-sintering,pyrogenic-reco.ery,and high-temperature sintering.Owing to the catalytic effect of the metal-based impurities and temperature co.trol,the as-obtained samples displayed an ordered transformation,including the interlayer distance,crystalline degree,and grain size.As anodes of lithium ions batteries,the capacity of repaired samples reached up to 310 mA h g^(-1)above after 300loops at 1.0 C,similar to that of co.mercial graphite.Meanwhile,benefitting from the effective assembly of carbon atoms in internal structure of graphite at>1400℃,their initial co.lombic efficiency were>87%.Even at 2.0 C,the capacity of samples remained approximately 244 mA h g^(-1)after 500 cycles.Detailed electrochemical and kinetic analyses revealed that a low temperature enhanced the isotropy,thereby enhancing the rate properties.Further,eco.omic and environmental analyses revealed that the revenue obtained through suitable pyrogenic-reco.ering manners was approximately the largest value(5500$t^(-1)).Thus,this study is expected to clarify the in-depth effect of different repair methods on the traits of graphite,while offering all-round evaluations of repaired graphite.

关键词： Spent graphite regeneration Repair Temperature treatment

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Efflcient machining of a co.plex blisk channel using a disc cutter

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Chinese Journal of Aeronautics 2024年第1期37卷 414-437页

作者： Xiangyu LI Zhaoyu LI Dong HE Junxue REN Qian FENG Kai TANG Department of Mechanical and Aerospace Engineering Hong Kong University of Science and TechnologyHong Kong 999077China Key Laboratory of High Performance Manufacturing for Aero Engine(Northwestern Polytechnical University) Ministry of Industry and Information TechnologyXi’an 710072China Xi’an Sanhang Power technology co. LtdXi’an 710000China HKUST shenzhen-Hong Kong co.laborative Innovation Research Institute FutianShenzhen 518057China HKUST shenzhen Research Institute Shenzhen 518057China

For rough machining of a co.plex narrow cavity,e.g.,a co.plex blisk channel on an aero-engine,the typically used cutting tools are the slender cylindrical cutter and co.ical cutter.Nevertheless,as neither of the two is particularly suited for rough machining,wherein the main purpose is to remove a large volume as quickly as possible,the machining efficiency is low,especially when the part materials are of hard-to-cut types(e.g.,Titanium-alloy)for which it often takes days to rough machine a blisk.Fortunately,disc machining provides a new and efficient roughing solution,since a disc cutter with a large radius enables a much larger cutting speed and thus a larger material removal rate.However,due to the large radius of the disc cutter,its potential co.lision with narrow and twisted channels beco.es a serious co.cern.In this paper,we propose a novel twophase approach for efficiently machining a co.plex narrow cavity workpiece using a disc-shaped cutter,i.e.,3+2-axis disc-slotting of the channel by multiple layers(rough machining)+five-axis disc-milling of the freeform channel side surfaces(semi-finish machining).Both simulation and physical cutting experiments are co.ducted to assess the effectiveness and advantages of the proposed method.The experimental results show that,with respect to a same cusp-height threshold on the channel side surfaces,the total machining time of the tested part by the proposed method is about only 36%of that by the co.ventional approach of plunging-milling(for roughing)plus milling by a slender cylindrical cutter(for semi-finishing).

关键词： Blisk channel CNC machining Disc cutter Roughing efficiency Tool path planning

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Tuning interfacial charge transfer for efficient visible-light-driven photodegradation and simultaneous H_(2)evolution

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Journal of Materials Science & technology 2024年第1期168卷 35-49页

作者： Zhiyang Li Yaogang Chen Yinghe Zhang Wei Ai Qian Lei Tingjun Yao Dan Zhong Wenjie Liu Wenbiao Jin Lei Yang State Key Laboratory of Urban Water Resource and Environment Shenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen 518055China Key Laboratory of Northwest Water Resources Environment and EcologyMinistry of EducationSchool of Environmental and Municipal EngineeringXi’an University of Architecture and TechnologyXi’an 710055China CNAS Accredited Test Center Guangdong Engineering Technology Research Center of Air PurificationHealthlead Co.Ltd.Shenzhen 518055China School of Science Harbin Institute of Technology ShenzhenShenzhen 518055China

The edge-graphitized carbon nitride(C_(3)N_(4)-C g)was prepared by seco.dary pyrolysis to co.struct ZnO/C_(3)N_(4)-C g(ZCN)type-Ⅱheterojunction photocatalyst via a facile sonication dispersion method,which achieved∼7.04-fold and∼18.3-fold enhanced visible-light-driven photocatalytic performance for refrac-tory micropollutant removal and simultaneous hydrogen(H_(2))evolution respectively co.pared to co.-ventional ZnO/g-C_(3)N_(4)Step-scheme heterojunction.The apparent quantum efficiency of the ZCN_(0.4)het-erojunction reaches 0.92%(λ=420 nm).Such excellent performance stems from that the edge-graphene moieties stitched onto the interface of heterojunction extend light absorption to the full visible spec-trum,meanwhile,the built-in electric field generated during Fermi level alignment acco.panying fa-vorable band-bending structure provides an effective pathway for the rapid migration of photoinduced electrons via the edge graphene channel to improve interfacial charge separation efficiency.Interestingly,the midgap states introduced in ZCN heterojunction co.ld temporarily retain photoexcited electrons to effectively inhibit the in situ carrier reco.bination for improved photocatalytic H_(2)evolution.Moreover,ZCN/peroxymonosulfate system exhibited excellent anti-interference performance against co.plex water bodies under visible illumination due to the synergistic effect between the co.existing anions and organic matter.Meanwhile,the eco.friendly nature of the ZCN/peroxymonosulfate system showed no biotoxicity of reaction filtrate on cell proliferation after treatment,which avoided seco.dary co.tamination.co.sid-ering the outstanding performance in photocatalysis,the ZCN system exhibits broad potential for practical applications in water pollution co.trol and green energy production.

关键词： ZnO C_(3)N_(4)-C g Heterojunction Photodegradation Hydrogen evolution

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