Results 11 to 20 of about 1,209 (125)

N,W‐Cooperative Modulation of Ni3S2 for Efficient Electrocatalytic Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid

open access: yesRare Metals, EarlyView.
ABSTRACT Ni3S2 has emerged as a promising catalyst for the electrochemical oxidation of biomass‐derived 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), driven by its distinctive physicochemical properties. However, its practical catalytic efficiency is severely hindered by abundant electrochemically inactive surface sites and poor ...
Cheng‐Feng Yi   +5 more
wiley   +1 more source

Prioritized Lithium Extraction From Spent Lithium‐Ion Batteries via Low‐Temperature Chlorination Mediated by Seawater‐Derived Chlorides

open access: yesRare Metals, EarlyView.
ABSTRACT Chlorination roasting has emerged as a promising pyrometallurgical strategy for the selective recovery of lithium from spent lithium‐ion batteries (LIBs). In this study, a natural roasting agent, seawater‐derived chlorides, was employed to selectively extract lithium from spent LiNi0.5Co0.2Mn0.3O2 (NCM523) cathode. MgCl2·6H2O, a main component
Bei‐Lei Zhang   +7 more
wiley   +1 more source

Twin‐Wire In Situ Additive Manufacturing of NiTiNb Eutectic Alloys: Eliminating Unmelted Nb Particles and Tailored Superelasticity

open access: yesRare Metals, EarlyView.
ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang   +9 more
wiley   +1 more source

Oxygen Vacancy Engineering of Ultrafine ZnAl2O4 Nanoparticles as a Robust Protective Layer for Dendrite‐Free and Long‐Lifespan Aqueous Zn Metal Anodes

open access: yesRare Metals, EarlyView.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren   +9 more
wiley   +1 more source

Surface‐Embedded Ag@Multilayer Graphene for Photothermal‐Enhanced Superhydrophobic Anti‐Icing Coatings

open access: yesRare Metals, EarlyView.
ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang   +7 more
wiley   +1 more source

Multiscale Study of a Synergistic System in Carbon‐Coated Multimetal‐Based Selenides Toward Rapid and Highly Stable Sodium Storage

open access: yesRare Metals, EarlyView.
ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu   +5 more
wiley   +1 more source

Effects of Brackish Water with Different Sodium-Potassium Ratios on Soil Water-Salt Characteristics and Winter Wheat Growth [PDF]

open access: yes
[Objective] To study the effects of brackish water irrigation on soil water and salt characteristics and crop growth is helpful to guide the safe utilization of brackish water.
CHENG Yu   +7 more
core   +1 more source

高压电瓷造价成本与电力网络产能的合理性建模

open access: yesDianci bileiqi, 2016
高压电瓷是电力网络中的重要器件,通过对高压电瓷产品按一定批量进行定期更换,能降低输电变电网的损耗,达到节能目的。构建了影响造价成本的参量模型和约束函数,采用非线性预测算法进行造价成本和电力网络产能预测,完成了采用非合作博弈纳什均衡方法实现对电网改造成本和电网均衡配比模型构建。仿真结果表明,用该模型进行电网改造,能有效节省造价成本的同时,提高了电力网络产能。
马涛
doaj  

The analysis of decalin pyrolysis property under supercritical conditions(十氢萘的超临界裂解性能分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2014
以十氢萘为吸热型碳氢燃料的模型化合物,研究其在550~610 ℃和0. 1~3. 5 MPa条件下的热裂解过程. 实验表明:不同温度(特别是相对较高的590和610 ℃)下,十氢萘在0. 1~2. 0 MPa压力下的转化率增加较为显著;十氢萘热裂解的主要气体产物有甲烷、乙烷、乙烯、丙烷、丙烯和碳原子数大于3的组分(C3+)等;在相同温度条件下,甲烷、乙烯的含量随压力增加而降低;乙烷、丙烷、丙烯和C3+的含量随压力增加而增加.裂解的气相产物中烯烃含量随温度升高而降低.液相产物主要包括环戊烷类、环戊烯类 ...
XINGYan(邢燕)   +2 more
doaj   +1 more source

Thrust and Practice of Super High-Yielding Rice Production in China [PDF]

open access: yes, 2003
Corresponding author, zheng21006@ sohu.com[中文文摘]追求水稻高产再高产一直是中国人的夙愿。经过半个世纪长期不懈的努力 ,育种技术和栽培方法不断开拓创新 ,中国的水稻单产增长了 237倍 ,居世界高产大国 ,总产增长 3 13倍 ,占世界总产的35 % ,并取得了许多辉煌的科技成就。其中杂交水稻育种技术居世界领先水平 ,水稻最高单产屡屡突破世界纪录。本文列举了中国对水稻超高产执着追求的实例 ,回顾了中国水稻产量的提高历程 ...
郑景生(福建省农业科学院稻麦研究所)   +1 more
core  

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