|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Magnetic-field enhanced high-thermoelectric performance in topological Dirac semimetal Cd3As2 crystal显示文摘Thermoelectric materials can be used to convert heat to electric power through the Seebeck effect. We study magneto-thermoelectric figure of merit(ZT) in three-dimensional Dirac semimetal Cd_3As_2 crystal.It is found that enhancement of power factor and reduction of thermal conductivity can be realized at the same time through magnetic field although magnetoresistivity is greatly increased. ZT can be highly enhanced from 0.17 to 1.1 by more than six times around 350 K under a perpendicular magnetic field of 7 T. The huge enhancement of ZT by magnetic field arises from the linear Dirac band with large Fermi velocity and the large electric thermal conductivity in Cd_3As_2. Our work paves a new way to greatly enhance the thermoelectric performance in the quantum topological materials. | Honghui Wang Xigang Luo Weiwei Chen Naizhou Wang Bin Lei Fanbao Meng Chao Shang Likuan Ma Tao Wu Xi Dai Zhengfei Wang Xianhui Chen | 2018 | Science Bulletin2018，63，7： | 4 |
| 2 | CuAlCl4 doped MIL-101 as a high capacity CO adsorbent with selectivity over N2显示文摘 | Yixiu WANG Chao LI Fanchao MENG Shuling LV Jintao GUO Xiaoqin LIU Chongqing WANG Zhengfei MA | 2014 | Frontiers of Chemical Science and Engineering2014，8，3： | 3 |
| 3 | Advances in adsorption principles and adsorption processes 显示文摘 | MA Zhengfei LIU Xiaoqin YAO Huqing | 2006 | Jour- nal of Nanjing University of Technology2006，28，1： | 1 |
| 4 | Molecular Simulation for Adsorption and Separation of CH4/H2 in Zeolitic Imidazolate Frameworks显示文摘 | Guo Haichao Shi Fan Ma Zhengfei | 2010 | Phys Chem C2010，114，12： | 1 |
| 5 | Recent progress on the long-term stability of hydrogen evolution reaction electrocatalysts显示文摘Developing new methodologies to produce clean and renewable energy resources is pivotal for carbon-neutral initiatives.Hydrogen(H2)is considered as an ideal energy resource due to its nontoxic,pollution-free,high utilization rate,and high calorific combustion value.Electrolysis of water driven by the electricity generated from renewable and clean energy sources(e.g.,solar energy,wind energy)to produce hydrogen attracts great efforts for hydrogen production with high purity.Recently,the breakthrough of the catalyst activity limit for the hydrogen evolution reaction(HER)catalysts has received extensive attention.Comparatively,fewer reviews have focused on the long-term stability of HER catalysts,which is indeed decisive for large-scale electrolytic industrialization.Therefore,a systematic summary concentrated on the durability of HER electrocatalysts would provide a fundamental understanding of the electrocatalytic performance for practical applications and offer new opportunities for the rational design of the highly performed HER electrocatalysts.This review summarizes the research progress toward the HER stability of precious metals,transition metals,and metal-free electrocatalysts in the past few years.It discusses the challenges in the stability of HER electrocatalysts and the future perspectives.We anticipate that it would provide a valuable basis for designing robust HER electrocatalysts. | Wenfang Zhai Yuanyuan Ma Dong Chen Johnny C.Ho Zhengfei Dai Yongquan Qu | 2022 | InfoMat2022，4，9： | 1 |
| 6 | Simulation and optimization of distillation processes for separating the methanol-chlorobenzene mixture with separate heat-pump distillation显示文摘 | Gao Xiaoxin Ma Zhengfei Yang Limin and Ma Jiangquan | 2013 | American Chemical Society2013，52，11： | 1 |
| 7 | Effect of Dy on Structure and Magnetic Properties of CoPt Alloys显示文摘The effects of Dy on the microstructure and magnetic properties of DyxCo50-xPt50 alloys were investigated. The XRD results indicate that all the alloys homogenized at 1000 ℃ contain only a single A1 (fcc) phase, while the alloys annealed at 675 ℃ consist of a hard-magnetic face-centered-tetragonal (fct) phase and a magnetically soft face-centered-cube (fcc) phase. Maximum values for the coercivity Hc and remanence ratio mr were achieved in Dy0.4Co49.6Pt50 alloys annealed at 675 ℃ for 80 min. For the series of DyxCo50-xPt50 alloys annealed at 675 ℃ for 60 min, Hc decreases monotonically with increasing Dy concentration, but mr is first enhanced and then weakened. | 成钢 PANG Kuang MA Lei GU Zhengfei HE Wei RAO Guanghui | 2013 | Journal of Wuhan University of Technology(Materials Science)2013，28，4： | 0 |
| 8 | Covalently Bonded Ni Sites in Black Phosphorene with Electron Redistribution for Efficient Metal‑Lightweighted Water Electrolysis显示文摘The metal-lightweighted electrocatalysts for water splitting are highly desired for sustainable and economic hydrogen energy deployments,but challengeable.In this work,a low-content Ni-functionalized approach triggers the high capability of black phosphorene(BP)with hydrogen and oxygen evolution reaction(HER/OER)bifunctionality.Through a facile in situ electro-exfoliation route,the ionized Ni sites are covalently functionalized in BP nanosheets with electron redistribution and controllable metal contents.It is found that the as-fabricated Ni-BP electrocatalysts can drive the water splitting with much enhanced HER and OER activities.In 1.0 M KOH electrolyte,the optimized 1.5 wt%Nifunctionalized BP nanosheets have readily achieved low overpotentials of 136 mV for HER and 230 mV for OER at 10 mA cm^(−2).Moreover,the covalently bonding between Ni and P has also strengthened the catalytic stability of the Ni-functionalized BP electrocatalyst,stably delivering the overall water splitting for 50 h at 20 mA cm^(−2).Theoretical calculations have revealed that Ni–P covalent binding can regulate the electronic structure and optimize the reaction energy barrier to improve the catalytic activity effectively.This work confirms that Ni-functionalized BP is a suitable candidate for electrocatalytic overall water splitting,and provides effective strategies for constructing metal-lightweighted economic electrocatalysts. | Wenfang Zhai Ya Chen Yaoda Liu Yuanyuan Ma Paranthaman Vijayakumar Yuanbin Qin Yongquan Qu Zhengfei Dai | 2024 | Nano-Micro Letters2024，16，6： | 0 |
| 9 | Interface and M^(3+)/M^(2+)Valence Dual-Engineering on Nickel Cobalt Sulfoselenide/Black Phosphorus Heterostructure for Efficient Water Splitting Electrocatalysis显示文摘The catalyst innovation that aims at noble-metal-free substitutes is one key aspect for future sustainable hydrogen energy deployment.In this paper,a nickel cobalt sulfoselenide/black phosphorus heterostructure(NiCoSe|S/BP)was fabricated to realize the highly active and durable water electrolysis through interface and valence dual-engineering.The NiCoSe|S/BP nanostructure was constructed by in-situ growing NiCo hydroxide nanosheet arrays on few-layer BP and subsequently one-step sulfoselenization by SeS2.Besides the conductive merit of BP substrate,holes in p-type BP are capable of oxidizing the Co^(2+)to high-valence and electron-accepting Co^(3+),benefiting the oxygen evolution reaction(OER).Meanwhile,Ni^(3+)/Ni^(2+)ratio in the heterostructure is reduced to maintain the electrical neutrality,which corresponds to the increased electron-donating character for boosting hydrogen evolution reaction(HER).As for HER and OER,the heterostructured NiCoSe|S/BP electrocatalyst exhibits small overpotentials of 172 and 285 mV at 10 mA cm^(-2)(η_(10))in alkaline media,respectively.And overall water splitting has been achieved at a low cell potential of 1.67 V at η_(10) with high stability.Molecular sensing and density functional theory(DFT)calculations are further proposed for understanding the rate-determine steps and enhanced catalytic mechanism.The investigation presents a deep-seated perception for the electrocatalytic performance enhancement of BP-based heterostructure. | Tingting Liang Syama Lenus Yaoda Liu Ya Chen Thangavel Sakthivel Fuyi Chen Fei Ma Zhengfei Dai | 2023 | Energy & Environmental Materials2023，6，2： | 0 |
| 10 | An HSR Data Model for Cyborg Insect Research Experiments显示文摘Research on cyborg intelligent insects requires the experiment platform to collect data from the distributed sensing models and process the multi-modal signals in real-time. To overcome these issues, we present a novel data model, naming as the Hybrid-synchronizedrealtime(HSR) data model, which can synchronize the hybrid raw data channels by a meta data integration method and process them with a fixed priority scheduling algorithm. Real animal experiments show that the insect-machine experiment platform based on the HSR data model can fully satisfy the requirements of cyborg intelligent insect research, especially in dealing with the technical challenges of data synchronization, real-time processing and hybrid data integration. It provides an efficient approach to implement the experiment platform and thus aid the frontier research on cyborg insects. | HONG Hui WANG Xiaoyu ZHU Zhengfei MA Qian GUAN Nan ZHENG Nenggan | 2018 | Chinese Journal of Electronics2018，27，4： | 0 |
| 11 | Preparation and characterization of SO_(4)^(2−)−/TiO_(2)and S_(2)O_(8)^(2)−/TiO_(2) catalysts显示文摘Nanosized solid superacids SO_(4)^(2−)/TiO_(2)and S_(2)O_(8)^(2)−/TiO_(2),as well as MCM-41-supported SO_(4)^(2−)/ZrO_(2),were prepared.Their structures,acidities,and catalytic activities were investigated and compared using XRD,N2 adsorption-desorption,and in situ FTIR-pyridine adsorption,as well as an evaluation reaction with pseudoionone cyclization.The results showed that SO_(4)^(2−)/TiO_(2)and S_(2)O_(8)^(2)−/TiO_(2)possess not only nanosized particles with diameters<7.0 nm,a BET sur-face greater than 140 cm2/g and relatively regular mesostruc-tures with pores around 4.0 nm,but also a pure anatase phase and strong acidity.Different from the Lewis acid nature of SO_(4)^(2−)/ZrO_(2)/MCM-41,SO_(4)^(2−)/TiO_(2)and S_(2)O_(8)^(2)−/TiO_(2)exhibit mainly Brønsted acidities.The strongest Brønsted acid sites were produced on SO_(4)^(2−)/TiO_(2)promoted with H2SO4,while Lewis acid sites on S_(2)O_(8)^(2)−/TiO_(2)even stronger than those on SO_(4)^(2−)/ZrO_(2)/MCM-41 were generated when persulfate solu-tion was used as sulfating agent.Because of their distinct acid natures,SO_(4)^(2−)/TiO_(2)and S_(2)O_(8)^(2)−/TiO_(2)exhibited catalytic activities for the cyclization of pseudoionone that were much higher than that of SO_(4)^(2−)/ZrO_(2)/MCM-41.It can be concluded that the existence of more Brønsted acid sites was favorable for proton participation in the cyclization reaction. | MA Xuedan GUO Daishi JIANG Qizhong MA Zifeng MA Zhengfei YE Weidong LI Chunbo | 2007 | Frontiers of Chemical Science and Engineering2007，1，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员