Results 41 to 50 of about 596 (173)

Enhanced thermoelectric power factor of p-type Mg3Sb2 via co-doping of Si and Fe

Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ, 2022
Mg3Sb2-based Zintl compounds are well known as an intrinsic p-type narrow bandgap semiconductor which can be considered as promising candidates because of their non-toxic and inexpensive elements.
Mạc Trung Kiên, Tạ Thị Thu, Nguyễn Hữu Tuân, Trần Đăng Thành, Dương Anh Tuấn   +4 more
doaj   +1 more source

Size Matters: New Zintl Phase Hydrides of REGa (RE = Y, La, Tm) and RESi (RE = Y, Er, Tm) with Large and Small Cations

Crystals, 2019
Many Zintl phases exhibiting a CrB type structure form hydrides. Systematic studies of AeTtHx (Ae = Ca, Sr, Ba; Tt = Si, Ge, Sn), LnTtHx (Ln = La, Nd; Tt = Si, Ge, Sn), and LnGaHx (Ln = Nd, Gd) showed the vast structural diversity of these systems ...
Anton Werwein, Thomas C. Hansen, Holger Kohlmann   +2 more
doaj   +1 more source

Further Evidences for the Sulfur Spillover on Carbon: Thermodynamic Aspects and Effects on Li‐S Solid‐State Batteries

Advanced Science, EarlyView.
ABSTRACT This study investigates sulfur spillover, the spontaneous and rapid spread of sulfur over carbon surfaces at ambient temperature. The process is studied by small‐angle X‐ray scattering (SAXS), X‐ray radiography, and microcalorimetry from which a number of physicochemical properties are derived.
Francesco Piccolo, Anka Berger, Sebastian Risse, Román Healy Corominas, Wilhelm Erth, Florian Fuchs, Jesus Andrade, Jörg Schuster, Marc Armbrüster, Philipp Adelhelm   +9 more
wiley   +1 more source

Enhancing Near‐Room‐Temperature Thermoelectric Performance of n‐Type Mg3(Sb, Bi)2‐Based Materials via ZrB2 Heterointerface Engineering

Advanced Science, EarlyView.
A conductive ZrB2 ceramic composite strategy was developed for Mg3(Sb, Bi)2 thermoelectrics to regulate carrier transport and phonon scattering through heterointerface engineering. The 1.0 wt.% ZrB2 composite achieved enhanced room‐temperature performance, with a power factor of 28.51 µW cm−1 K−2 and a peak ZT of 1.22 at 573 K.
Yangyang Xu, Li Zhang, Meng Li, Jie Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +7 more
wiley   +1 more source

Engineering a Correlated Narrow‐Gap Semiconductor: Effects of Ga Substitution in EuZn2P2

Advanced Electronic Materials, EarlyView.
ABSTRACT The effect of Ga substitution on the electronic, magnetic, and low‐energy responses of the Zintl phase EuZn2P2${\rm EuZn}_2 {\rm P}_2$ is investigated by electrical transport, electron spin resonance (ESR), and terahertz time‐domain spectroscopy (THz‐TDS). Incorporating Ga into EuZn2P2${\rm EuZn}_2 {\rm P}_2$ (EuZn1.8Ga0.2P2${\rm EuZn}_{1.8} {\
Mateus Dutra, Esteban Marulanda, Gustavo G. Vasques, Jaime Ferreira Oliveira, Pedro C. Sabino, Rebeca Brigato Delgado, Leticie Mendonça‐Fereira, Adriano R. V. Benvenho, Elisa Baggio‐Saitovitch, Ricardo K. Machado, Nicolas M. Kawahala, Julian Munevar, Marcos A. Avila, Felix G. G. Hernandez   +13 more
wiley   +1 more source

Application of Magnesium Metal as Anode in Batteries

MetalMat, EarlyView.
When used as an anode, magnesium metal offers several advantages, including a high volumetric capacity, environmental friendliness, abundant natural reserves, and a low tendency for dendrite growth. Battery types employing magnesium as the anode include rechargeable magnesium‐ion batteries, aqueous magnesium‐ion batteries, magnesium–air batteries, and ...
Yuanjie Zhang, Dichang Guan, Guorong Hu, Zhongdong Peng, Yanbing Cao, Ke Du   +5 more
wiley   +1 more source

Achieving High Thermoelectric Performance in Rare-Earth Element-Free CaMg2Bi2 with High Carrier Mobility and Ultralow Lattice Thermal Conductivity

Research, 2020
CaMg2Bi2-based compounds, a kind of the representative compounds of Zintl phases, have uniquely inherent layered structure and hence are considered to be potential thermoelectric materials. Generally, alloying is a traditional and effective way to reduce
Muchun Guo, Fengkai Guo, Jianbo Zhu, Li Yin, Qian Zhang, Wei Cai, Jiehe Sui   +6 more
doaj   +1 more source

Molecularly Engineered 2D Xene Heterostructures With Implanted Peroxidase‐Like Activity for Mimicking Enzyme Functions

Small Methods, EarlyView.
A modular electropolymerization strategy is used to covalently graft a vinyl‐terminated Co(II) molecular catalyst onto allyl 2D germanane. This molecular programming approach yields a 2D Xene nanozyme with implanted peroxidase‐like activity, enabling sensitive and selective electrochemical detection of hydrogen peroxide and the monitoring of ...
Yiming Lei, Xavier Sala, Jordi García‐Antón, Jose Muñoz   +3 more
wiley   +1 more source

Tutorial on Chemical Pressure Analysis: How Atomic Packing Drives Laves/Zintl Intergrowth in K₃Au₅Tl

Crystals, 2021
The tight atomic packing generally exhibited by alloys and intermetallics can create the impression of their being composed of hard spheres arranged to maximize their density.
Erdong Lu, Jonathan S. Van Buskirk, Jingxiang Cheng, Daniel C. Fredrickson   +3 more
doaj   +1 more source

K8In10Hg: a Zintl phase with isolated In10Hg clusters [PDF]

Journal of Alloys and Compounds, 1993
Abstract The title compound results from the substitution of one mercury atom for indium in the known metallic K 8 In 11 [8K + + In 11 7− + e − ]. It contains the same isolated eleven-atom clusters as before, pentacapped trigonal prisms compressed along the three-fold axis, but with mercury disordered over the trigonal prismatic sites ( P6 ...
Sevov, Slavi C., Ostenson, Jerome E., Corbett, John D.   +2 more
openaire   +1 more source