Ran Ang
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View article: Synergistic Band and Defect Engineering Realize High‐Efficiency CuAgSe‐Alloyed Lead‐Free GeTe Thermoelectrics
Synergistic Band and Defect Engineering Realize High‐Efficiency CuAgSe‐Alloyed Lead‐Free GeTe Thermoelectrics Open
Lead‐free GeTe is a promising thermoelectric material; however, its performance is hindered by intrinsically high carrier concentrations arising from Ge vacancies and relatively high lattice thermal conductivity. Here, a synergistic alloyi…
View article: Cu <sub>3</sub> SbSe <sub>3</sub> ‐Alloying‐Induced High Thermoelectric Performance and Mechanical Robustness in Bi <sub>2</sub> Te <sub>3</sub> ‐Based Thermoelectric Materials
Cu <sub>3</sub> SbSe <sub>3</sub> ‐Alloying‐Induced High Thermoelectric Performance and Mechanical Robustness in Bi <sub>2</sub> Te <sub>3</sub> ‐Based Thermoelectric Materials Open
Bi 2 Te 3 ‐based thermoelectric materials remain the only commercially viable candidates for low‐grade waste heat recovery. However, their moderate thermoelectric performance and limited mechanical robustness constrain broader industrial a…
View article: Enhanced Band‐Crystal Engineering Drives Superior Power Generation in GeTe
Enhanced Band‐Crystal Engineering Drives Superior Power Generation in GeTe Open
Optimizing both electrical and thermal performance in thermoelectric (TE) materials is challenging due to the inherent coupling between carrier and phonon transport. To address this, targeted modulation of band structure and crystal lattic…
View article: Pseudo‐Nanostructuring and Grain Refinement Enhance the Near‐Room‐Temperature Thermoelectric Performance in n‐type PbSe
Pseudo‐Nanostructuring and Grain Refinement Enhance the Near‐Room‐Temperature Thermoelectric Performance in n‐type PbSe Open
PbSe, a promising Te‐free thermoelectric material for medium‐temperature applications, has garnered considerable attention due to its substantial thermoelectric potential and relatively low cost. However, the vast majority of research on p…
View article: Hydrothermal Synthesis of Cancrinite from Coal Gangue for the Immobilization of Sr
Hydrothermal Synthesis of Cancrinite from Coal Gangue for the Immobilization of Sr Open
The primary objective of this study is to investigate and develop a rapid and effective method for the immobilization of Sr in the event of a nuclear leakage incident. Coal gangue, an underutilized form of solid waste from the coal industr…
View article: Enhanced thermoelectric performance and mechanical strength in <scp>GeTe</scp> enable power generation and cooling
Enhanced thermoelectric performance and mechanical strength in <span>GeTe</span> enable power generation and cooling Open
Finding a real thermoelectric (TE) material that excels in various aspects of TE performance, mechanical properties, TE power generation, and cooling is challenging for its commercialization. Herein, we report a novel multifunctional Ge 0.…
View article: Unique Semi‐Coherent Nanostructure Advancing Thermoelectrics of <i>N</i>‐Type PbSe
Unique Semi‐Coherent Nanostructure Advancing Thermoelectrics of <i>N</i>‐Type PbSe Open
Introducing nanostructures into bulk thermoelectric materials is an effective strategy for reducing lattice thermal conductivity ( κ lat ). However, large numbers of hanging bonds emerge on account of lattice mismatch usually at the interf…
View article: Band engineering enhances thermoelectric performance of Ag-doped Sn<sub>0.98</sub>Se
Band engineering enhances thermoelectric performance of Ag-doped Sn<sub>0.98</sub>Se Open
Ag doping can effectively increase the carrier concentration of p -type SnSe polycrystalline, thereby enhancing the thermoelectric (TE) performance. However, the key role of the transport valence band in Ag-doped SnSe remains unclear. Part…
View article: Ga intercalation in van der Waals layers for advancing p-type Bi<sub>2</sub>Te<sub>3</sub>-based thermoelectrics
Ga intercalation in van der Waals layers for advancing p-type Bi<sub>2</sub>Te<sub>3</sub>-based thermoelectrics Open
Tetradymite-structured chalcogenides, such as Bi 2 Te 3 and Sb 2 Te 3 , are quasi-two-dimensional (2D) layered compounds, which are significant thermoelectric materials applied near room temperature. The intercalation of guest species in v…
View article: Synergistic band modulation and precipitates: Achieving high quality factor in SnTe
Synergistic band modulation and precipitates: Achieving high quality factor in SnTe Open
Breaking the thermoelectric figure of merit zT barrier of SnTe enables it to become a promising alternative to PbTe; however, the inferior and strongly coupled physicochemical properties of pristine SnTe severely restrict the efficient opt…
View article: Advancing thermoelectrics by suppressing deep-level defects in Pb-doped AgCrSe<sub>2</sub> alloys
Advancing thermoelectrics by suppressing deep-level defects in Pb-doped AgCrSe<sub>2</sub> alloys Open
AgCrSe 2 -based compounds have attracted much attention as an environmentally friendly thermoelectric material in recent years due to the intriguing liquid-like properties. However, the ultra-low carrier concentration and the high Ag Cr de…
View article: Graphical Abstract: Angew. Chem. Int. Ed. 51/2020
Graphical Abstract: Angew. Chem. Int. Ed. 51/2020 Open
Protein StructuresIn their Communication on page 22916, R. Linser et al. demonstrate by using NMR spectroscopy combined with MD simulations that the active site of human carbonic anhydrase II shows pronounced open/close conformational exch…
View article: Anisotropic Thermoelectrics: Strong Anisotropic Thermal Conductivity in Polycrystalline Layers of (Ag<i><sub>x</sub></i>Sn<sub>1‐</sub><i><sub>x</sub></i>S)<sub>1.2</sub>(TiS<sub>2</sub>)<sub>2</sub> with Prospects Toward Improved Thermoelectric Performance (Ann. Phys. 11/2020)
Anisotropic Thermoelectrics: Strong Anisotropic Thermal Conductivity in Polycrystalline Layers of (Ag<i><sub>x</sub></i>Sn<sub>1‐</sub><i><sub>x</sub></i>S)<sub>1.2</sub>(TiS<sub>2</sub>)<sub>2</sub> with Prospects Toward Improved Thermoelectric Performance (Ann. Phys. 11/2020) Open
In article number 1900551, Ran Ang and co-workers report strong anisotropic thermal conductivity in polycrystalline layers of AgxSn1-xS)1.2(TiS2)2 alloys. The researchers report that these properties originate from the natural intercalated…
View article: Superconductivity related to local electronic and atomic structures in layered chalcogenide 1T-TaS<sub>2-x</sub>Se<sub>x</sub>
Superconductivity related to local electronic and atomic structures in layered chalcogenide 1T-TaS<sub>2-x</sub>Se<sub>x</sub> Open
We have performed temperature-dependent synchrotron radiation x-ray absorption fine structure (XAFS) spectra of layered transition metal dichalcogenide 1T-TaS2-xSex to elucidate the local electronic and atomic structure especially associat…
View article: Reusing software tests for configuration testing: A case study of the Hadoop project
Reusing software tests for configuration testing: A case study of the Hadoop project Open
Configuration is an inseparable piece of today’s software development. Due to its dynamic nature and lack of standardized checking procedure, misconfiguration has been one of the dominant factors contributing to software failures in produc…
View article: Germanium isotope effect induced guest rattling and cage distortion in clathrates
Germanium isotope effect induced guest rattling and cage distortion in clathrates Open
Intermetallic clathrates are materials characterized by a large cage structure where guest atoms can move anharmonically, providing these materials exotic thermoelectric properties. Unfortunately, the dynamical and atomic nature of the rat…
View article: Layered Cobaltites and Natural Chalcogenides for Thermoelectrics
Layered Cobaltites and Natural Chalcogenides for Thermoelectrics Open
We have systematically investigated thermoelectric properties by a series of doping in layered cobaltites Bi2Sr2Co2Oy, verifying the contribution of narrow band. In particular, Sommerfeld coefficient is dependent on charge carriers’ densit…