Materials Literature
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通过共沉淀法制得类球形锂离子电池正极材料LiNi1/3Co1/3Mn1/3O2，并用非水相共沉法对其进行CoAl2O4包覆得到LNCMO（x）．采用x射线衍射（XRD）、扫描电子显微术（SEM）和透射电子显微术（TEM）测试材料的结构和观察材料形貌．结果表明．CoAl2O4在材料表面形成8nm均匀包覆层，未改变主体材料的结构．电化学性能测试表明，1％（bymass）CoAl204包覆量的LiNi1/3Co1/3Mn1/3O2材料（LNCMO（1））高充电电压（3．0～4．6V，150mA·g^-1）100周期循环放电容量保持率为93．7％（无包覆LNCMO（0）保持率为74．4％）；55℃高温100周期循环容量保持率为77％（无包…
zet: Neolitik adan bu yana eitli ihtiyalar ve kayglar sonucunda seramik kaplar yapmay renen insanolu, bu renme ve retme sreci iinde, estetik alglarnn da gelimesiyle hem kile ekil verip hem de farkl malzeme, renk ve doku araylarna gir-
In this study, experimental and numerical studies for the synthesis of carbon nanotube(CNT) in methane counterflow diffusion flame have been performed. Methane mixed with acetylene() was used as a fuel gas and ferrocene was used as a catalyst for synthesis of CNT. The major parameters was mixing rate and mixing rates…
전기활성고분자의 종류 중 하나인 유전성 탄성체의 거동에 대응할 수 있는 유연전극 제조에 대한 연구를 수행하였다. 전도성 고분자(PEDOT:PSS)에 가소제 역할을 하는 자이리톨(Xylitol)을 첨가하여 기계적 특성을 평가하였다. 자이리톨을 첨가한 전극의 유연성을 확인하기 위해 실리콘 시편에 전극을 도포하여 인장시험을 수행하였다. 자이리톨을 70 wt% 첨가한 조건에서 연신률이 크게 증가함을 확인하였고 실리콘 거동에 큰 영향을 미치지 않는 것을 확인하였다. 또한, 전극과 실리콘의 접착성을 향상시키기 위해 표면조도가 다른 실리콘 필름을 제작하였으며 사포 #120으로…
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Reports on recent trends and industry developments involving the CES society.
This research has shown that the microstructure of self-assembled copolymers can be decoupled from the polymer chemistry. The simplest polymer architecture, linear block copolymers, is valuable for a broad range of applications, including adhesives and coatings, medical devices, electronics and energy storage, because…
Polypropylene is a thermoplastic which is one of the classes of plastics. Thermoplastics when subjected to heat, they melt and on cooling they solidify. Polypropylene is used as matrix in so many materials which include chairs, car bumpers, accelerator pedal, bottle crates and others. Some of the additives for the for…
The static and dynamic properties of Cu$^{2+}$ spins (spin-$1/2$) in the frustrated three-dimensional antiferromagnet Li$_{2}$CuW$_{2}$O$_{8}$ were investigated by means of $^{7}$Li Nuclear Magnetic Resonance (NMR) experiments on the polycrystalline sample. The magnetic long-range ordering at $T_{\rm N}\simeq$ 3.9 K w…
The objective of the present work was isolated, evaluated and performed the toxicity studies and results were compared with marketed available synthetic mucoadhesive polymers. In this study, we used four different plant sources, namely Pithecellobium dulce (PD), Prosopis juliflora (PJ), Acacia arabica (AA) and Abelmos…
The Chinese maritime silk route ,as well as the Silk Road, occupied an important part in Chinese international trade. Chinese rich cultures were...
In this study, stabilization treatment of heavy metals such as Ni, Cu, Pb, and Zn in contaminated marine sediment was achieved using bentonite. Stabilization experiment was accomplished by wet-curing with bentonite for 150 days. From the sequential extraction results of heavy metals, it was observed that the easily ex…
Nano-composite permanent magnetic material is a new type of permanent magnetic material, and it is the synthesis of soft and hard magnetic phase within the nanoscale. On the basis of exchange coupling hard magnetizing theory, nano-composite permanent magnetic material can, at the same time, have high residual magnetiz…
In this paper, a broadband circuit model of a potential transformer (PT) based on fractional calculus and circuit augmentation method was proposed to improve the high frequency characteristic while providing physical significance of the existing traditional equivalent circuit model with simple structure. In order to c…
A new class of ferritic superalloys containing B2-type zones inside parent L21-type precipitates in a disordered solid-solution matrix, also known as a hierarchical-precipitate strengthened ferritic alloy (HPSFA), has been developed for high-temperature structural applications in fossil-energy power plants. These allo…
Tujuan dari perancangan alat bantu pegang fleksibel ini adalah untuk mempermudah dalam proses penggerindaan batu mulia menjadi bentuk polyhedron, pengasahan mata bor (dressing), dan untuk penghalusan specimen uji kekerasan. Selain itu perancangan alat ini juga bertujuan untuk menghasilkan suatu alat yang mampu digunak…
medio para corrugar y test liner a partir de cajas corrugadas recicladas.Parte 1.
El presente estudio describe la elaboración y caracterización de una fibra sintética bactericida compuesta por Tereftalato de Polietileno reciclado (rPET) y nanopartículas de cobre (0), mediante un proceso de extrusión utilizando una extrusora monohusillo. Las nanopartículas empleadas fueron elaboradas utilizando radi…
Pengembangan teknologi di bidang konstruksi yang semakin maju tidak dapat dipisahkan dari pengelasan, karena pengelasan mempunyai peranan penting dalam rekayasa dan reparasi logam. Terdapat beberapa faktor yang berpengaruh terhadap hasil dari proses pengelasan tersebut diantaranya adalah tegangan busur, kecepatan peng…