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Enhancing lithium-sulfur battery performance with In_(2)O_(3)-In_(2)s_(3)@NsC heterostructures:synergistic effects of double barrier and catalytic transformation

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Journal of Materials science & Technology 2024年第2期169卷 105-114页

作者： Deqing he Chunyu Zhu Yutao Huo Zhonghao Rao school of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China hebei Key Laboratory of Thermal science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China school of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(LiPss)are considered the main obstacle to the commercial application of lithium-sulfur(Li-s)*** accelerate the conversion by catalysis and inhibit the shuttling of soluble LiPss in Li-s batteries,a solution is proposed in this *** solution involves fabrication of N,s co-doped carbon coated In_(2)O_(3)/In_(2)s_(3)heterostructure(In_(2)O_(3)-In_(2)s_(3)@NsC)as a multifunctional host material for the *** In_(2)O_(3)-In_(2)s_(3)@NsC composite can reduce the Gibbs free energy for the conversion reactions of LiPss,which results in superior *** synergy between different components in In_(2)O_(3)-In_(2)s_(3)@NsC and the unique 3D structure facilitate ion and electron transport in Li-s *** In_(2)O_(3)-In_(2)s_(3)@NsC/Li 2 s 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 ***,this study proposes a promising solution to improve the energy storage properties of Li-s batteries,which could potentially facilitate the commercialization of Li-s batteries.

关键词： Li-s battery Multifunctional host material synergy heterostructures Energy storage properties

Recycling the spent electronic materials to construct a highperformance Cu_(1.94)s/Zns heterostructure anode of sodium-ion batteries

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Nano Research 2024年第5期17卷 4006-4015页

作者： Xiaowei he Tianshuai Wang Lidong Tian Qiuyu Zhang school of Chemistry and Chemical Engineering Xi’an Key Laboratory of Functional Organic Porous MaterialsKey Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Chongqing science and Technology Innovation Center of Northwestern Polytechnical University Chongqing 401135China College of Materials science and Engineering Xi’an University Science and TechnologyXi’an 710054China

heterostructure engineering by coupling different nanocrystals has received extensive attention because it can enhance the reaction kinetics of the anode of sodium-ion batteries(sIBs).However,constructing high-quality heterostructure anode materials through green and environmentally friendly methods remains a ***,we have proposed a simple one-step method by recycling the electronic waste metal materials to synthesize the Cu_(1.94)s/Zns heterostructure *** with the experimental analysis and first principle calculations,we find that the synergistic effect of different components in heterostructure structures can significantly enhance the reversible capacity and rate performance of anode *** on the constructed Cu_(1.94)s/Zns anode,we obtain a superior reversible capacity of 440 mAh·g^(-1) at 100 mA·g^(-1) and 335 mAh·g^(-1) after 3000 cycles at 2000 mA·g^(-1).Our work sheds new light on designing high-rate and capacity anodes for sIBs through the greenness synthesis method.

关键词： sodium-ion batteries heterostructure reversible capacity environmentally synthesis process

A 28/56 Gb/s NRZ/PAM-4 dual-mode transceiver with 1/4 rate reconfigurable 4-tap FFE and half-rate slicer in a 28-nm CMOs

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Journal of semiconductors 2024年第6期45卷 35-46页

作者： Yukun he Zhao Yuan Kanan Wang Renjie Tang Yunxiang he Xian Chen Zhengyang Ye Xiaoyan Gui school of Microelectronics Xi’an Jiaotong UniversityXi’an 710049China

A 28/56 Gb/s NRZ/PAM-4 dual-mode transceiver(TRx)designed in a 28-nm complementary metal-oxide-semiconduc-tor(CMOs)process is presented in this article.A voltage-mode(VM)driver featuring a 4-tap reconfigurable feed-forward equal-izer(FFE)is employed in the quarter-rate transmitter(TX).The half-rate receiver(RX)incorporates a continuous-time linear equal-izer(CTLE),a 3-stage high-speed slicer with multi-clock-phase sampling,and a clock and data recovery(CDR).The experimen-tal results show that the TRx operates at a maximum speed of 56 Gb/s with chip-on board(COB)*** 28 Gb/s NRZ eye diagram shows a far-end vertical eye opening of 210 mV with an output amplitude of 351 mV single-ended and the 56 Gb/s PAM-4 eye diagram exhibits far-end eye opening of 33 mV(upper-eye),31 mV(mid-eye),and 28 mV(lower-eye)with an output amplitude of 353 mV *** recovered 14 GHz clock from the RX exhibits random jitter(RJ)of 469 fs and deterministic jitter(DJ)of 8.76 *** 875 Mb/s de-multiplexed data features 593 ps horizontal eye opening with 32.02 ps RJ,at bit-error rate(BER)of 10-5(0.53 UI).The power dissipation of TX and RX are 125 and 181.4 mW,respectively,from a 0.9-V sup-ply.

关键词： transceiver(TRx) feed-forward equalizer(FFE) clock and data recovery(CDR) continuous time linear equalizer(CTLE)

Will fuel switching ever happened in China’s thermal power sector?The rule of carbon market design

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Frontiers of Engineering Management 2024年第2期11卷 207-230页

作者： Anqi he Huarong PENG Wuhan University Institute for International studies Wuhan UniversityWuhan 430072China Climate Change and Energy Economics study Center Economics and Management SchoolWuhan UniversityWuhan 430000China Collaborative Innovation Center for Emissions Trading system by Ministry of Education and Hubei Provincial Government Hubei University of EconomicsWuhan 430200China

To assess the effectiveness of China’s emissions trading scheme(ETs)in facilitating energy structure optimization,we constructed a fuel-switching model utilizing data from 1067 generating units under the Chinese ETs *** model simulates the fuel-switching price in China’s thermal power sector,taking into account various allowance allocation *** results show the following:1)Thermal power plants will transition from coal to gas if the current ETs auction rate surpasses 26%.2)Furthermore,in scenarios where the ETs operates independently,a transition will occur if the carbon allowance market is entirely auction-based and the carbon price attains 119.50 UsD/tCO_(2).3)In a collaborative scenario involving both the ETs and a gas feed-in tariff subsidy,a carbon price of 9.39 UsD/tCO_(2)will effect a transition from coal to gas,provided both the auction ratio and subsidy price are maximized.

关键词： ETs thermal power plant fuel switching allowance allocation method feed-in tariff subsidy

Co-doped Ni_(3)s_(2) nanosheet array: A high-efficiency electrocatalyst for alkaline seawater oxidation

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Nano Research 2024年第3期17卷 1050-1055页

作者： Meng Yue Xun he shengjun sun Yuntong sun Mohamed s.Hamdy Mhamed Benaissa Alsamani A.M.salih Jun Liu Xuping sun College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Institute of Fundamental and Frontier sciences University of Electronic Science and Technology of ChinaChengdu 610054China Department of Chemistry College of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Department of Chemical Engineering College of EngineeringUniversity of Ha’ilP.O.Box 2440Ha’il 81441Saudi Arabia Department of Otolaryngology-head&Neck surgery West China HospitalSichuan UniversityChengdu 610041China

Developing efficient and durable oxygen evolution reaction(OER)catalysts holds great promise for green hydrogen production via seawater electrolysis,but remains a ***,we report a Co-doped Ni_(3)s_(2) nanosheet array on Ni foam(Co-Ni_(3)s_(2)/NF)as a high-efficiency OER electrocatalyst for *** alkaline conditions,Co-Ni_(3)s_(2)/NF requires an overpotential of only 368 mV to drive 100 mA·cm^(–2),superior to Ni_(3)s_(2)/NF(385 mV).Besides,it exhibits at least 50-h continuous electrolysis.

关键词： Co doping Ni_(3)s_(2)nanosheet array oxygen evolution reaction seawater electrolysis electrocatalyst

Room-temperature ferroelectricity in van der Waals snP_(2)s_(6)

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Frontiers of physics 2024年第4期19卷 113-123页

作者： Chaowei he Jiantian Zhang Li Gong Peng Yu state Key Laboratory of Optoelectronic Materials and Technologies Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices Nanotechnology Research Center School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Instrumental Analysis and Research Center Sun Yat-sen UniversityGuangzhou 510275China

Two-dimensional(2D)ferroelectric materials,which possess electrically switchable spontaneous polarization and can be easily integrated with semiconductor technologies,is of utmost importance in the advancement of high-integration low-power *** the experimental discovery of certain 2D ferroelectric materials such as CuInP2s6 and In2se3,achieving stable ferroelectricity at room temperature in these materials continues to present a significant ***,stable ferroelectric order at room temperature in the 2D limit is demonstrated in van der Waals snP_(2)s_(6) atom layers,which can be fabricated via mechanical exfoliation of bulk snP_(2)s_(6) *** polarization is observed in thin snP_(2)s_(6) of~7 ***,a van der Waals ferroelectric field-effect transistor(Fe-FET)with ferroelectric snP_(2)s_(6) as top-gate insulator and ptype WTe0.6se1.4 as the channel was designed and fabricated successfully,which exhibits a clear clockwise hysteresis loop in transfer characteristics,demonstrating ferroelectric properties of snP_(2)s_(6) atomic *** addition,a multilayer graphene/snP_(2)s_(6)/multilayer graphene van der Waals vertical heterostructure phototransistor was also fabricated successfully,exhibiting improved optoelectronic performances with a responsivity(R)of 2.9 A/W and a detectivity(D)of 1.4×10^(12) *** results show that snP_(2)s_(6) is a promising 2D ferroelectric material for ferroelectric-integrated low-power 2D devices.

关键词： two-dimensional ferroelectric materials ferroelectric fieldeffect transistors photodetectors

Research on the Asymmetric Effect of Fixed-Asset Investment on China's Primary Energy Production in the Context of Energy Transformation

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Journal of systems science & Complexity 2024年第3期37卷 1163-1183页

作者： CHAI Jian he Peng ZHANG Xiaokong HOU Yamin school of Economics and Management Xidian UniversityXi'an 710126China

Under China’s“Dual Carbon”target(DCT),“clean replacement”on the energy supply side and“electric energy replacement”on the energy consumption side are the ways to achieve energy ***,energy projects have a long construction period,complex technology categories,and investment risks that greatly affect the development of energy *** judging the effect of investment changes on primary energy production is of great practical significance to the realization of the *** on this,NARDL and TVP-sV-VAR models are innovatively used to reveal the nonlinear effect of fixed-asset investment on China’s primary energy *** results show that the marginal effect of investment growth on coal production is about 1.44 times that of investment ***,the marginal effect of oil and gas investment growth is about 1.21times that of investment *** to the influence of resource constraints,China’s traditional fossil energy still has varying degrees of path dependence on the investment-driven development *** non-fossil energy,investment in hydropower and nuclear power has an inverse correlation with the change in *** marginal efficiency and diseconomies of scale have hindered the development of the hydropower and nuclear power *** addition,the asymmetric effect is not yet significant for the short development time and technical constraints of wind and solar *** the impulse response results,the impact curves of investment in wind and solar power are generally positive,and investment has different degrees of time-delay and time-varying effects on various energy production,which verifies the heterogeneity of investment adjustment mechanisms in different energy industries.

关键词： "Dual Carbon"target fixed-asset investment primary energy NARDL nonlinearity

A Unified Motion Generation Approach for Quadruped L-s Walk and Trot Gaits Based on Linear Model Predictive Control

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Journal of Bionic Engineering 2024年第4期21卷 1707-1719页

作者： Yapeng shi Zhicheng he Xiaokun Leng songhao Piao Lining sun Harbin Institute of Technology No.92 West Dazhi StreetHarbin150001HeilongjiangChina Yanshan University No.438 West Hebei AvenueQinhuangdao066004HebeiChina

The goal of this paper is to develop a unified online motion generation scheme for quadruped lateral-sequence walk and trot gaits based on a linear model predictive control ***,the dynamics of the linear pendulum model is formulated over a predictive horizon by dimensional *** gait pattern conversion,the lateral-sequence walk and trot gaits of the quadruped can be regarded as unified biped gaits,allowing the dynamics of the linear inverted pendulum model to serve quadruped motion *** addition,a simple linearization of the center of pressure constraints for these quadruped gaits is developed for linear model predictive control ***,the motion generation problem can be solved online by quadratic programming with foothold *** is demonstrated that the proposed unified scheme can generate stable locomotion online for quadruped lateral-sequence walk and trot gaits,both in simulation and on *** results show significant performance improvements compared to previous ***,the results also suggest the linearly simplified scheme has the ability to robustness against unexpected disturbances.

关键词： Motion generation Gait pattern conversion Model predictive control Quadruped locomotion

Preface to the special Topic on Ocean, sea Ice and Northern hemisphere Climate:In Remembrance of Professor Yongqi GAO's Key Contributions

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Advances in Atmospheric sciences 2024年第8期41卷 1463-1464页

作者： Noel KEENLYsIDE shengping he Fei LI Geophysical Institute University of Bergen and Bjerkenes Centre for Climate ResearchBergen 5007Norway Nansen Environmental and Remote sensing Center Bergen 5007Norway Nansen-Zhu International Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

This special issue commemorates the life work of Prof. Yongqi GAO who passed away in July 2021, his time cut short by illness. he had many great achievements, but still much more to contribute. The seven articles in this special issue are from research areas where he contributed, and they illustrate how his close colleagues are continuing his work.

关键词： Ice hemisphere Climate