scholarly journals Earth-Abundant and Non-Toxic SiX (X = S, Se) Monolayers as Highly Efficient Thermoelectric Materials

2017 ◽  
Vol 121 (1) ◽  
pp. 123-128 ◽  
Author(s):  
Ji-Hui Yang ◽  
Qinghong Yuan ◽  
Huixiong Deng ◽  
Su-Huai Wei ◽  
Boris I. Yakobson
Keyword(s):  
Thermoelectric Materials ◽  
Highly Efficient ◽  
Earth Abundant

scholarly journals Photocorrosion-resistant Sb2Se3photocathodes with earth abundant MoSxhydrogen evolution catalyst

2017 ◽  
Vol 5 (44) ◽  
pp. 23139-23145 ◽  
Author(s):  
Rajiv Ramanujam Prabhakar ◽  
Wilman Septina ◽  
Sebastian Siol ◽  
Thomas Moehl ◽  
René Wick-Joliat ◽  
...  
Keyword(s):  
Acidic Media ◽  
Highly Efficient ◽  
Earth Abundant

A highly efficient Sb2Se3photocathode is resistant to photocorrosion in strongly acidic media without protective overlayers.

scholarly journals WS(1−x)Sex Nanoparticles Decorated Three-Dimensional Graphene on Nickel Foam: A Robust and Highly Efficient Electrocatalyst for the Hydrogen Evolution Reaction

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 929 ◽  
Author(s):  
Sajjad Hussain ◽  
Kamran Akbar ◽  
Dhanasekaran Vikraman ◽  
Rana Afzal ◽  
Wooseok Song ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Large Scale ◽  
Nickel Foam ◽  
Transition Metal Dichalcogenides ◽  
Three Dimensional ◽  
Cost Effective ◽  
Highly Efficient ◽  
Highly Active ◽  
Earth Abundant

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.

scholarly journals Low-temperature transport properties of n-type layered homologous compounds Bi8−xSbxSe7

2020 ◽  
Vol 8 (40) ◽  
pp. 14037-14048
Author(s):  
Pavan Kumar-Ventrapati ◽  
Shantanu Misra ◽  
Gaëlle Delaizir ◽  
Anne Dauscher ◽  
Bertrand Lenoir ◽  
...  
Keyword(s):  
Low Temperature ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Room Temperature ◽  
Parent Compound ◽  
New Class ◽  
Highly Efficient ◽  
Homologous Compounds

The n-type chalcogenide Bi8Se7 is the parent compound of a new class of highly-efficient thermoelectric materials for near-room-temperature thermoelectric applications.

High thermoelectric performance in low-cost SnS0.91Se0.09 crystals

Science ◽  
2019 ◽  
Vol 365 (6460) ◽  
pp. 1418-1424 ◽  
Author(s):  
Wenke He ◽  
Dongyang Wang ◽  
Haijun Wu ◽  
Yu Xiao ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thermoelectric Materials ◽  
High Performance ◽  
Carrier Mobility ◽  
Figure Of Merit ◽  
Toxic Elements ◽  
Low Cost ◽  
Thermoelectric Performance ◽  
Tin Sulfide ◽  
Temperature Dependent ◽  
Earth Abundant

Thermoelectric technology allows conversion between heat and electricity. Many good thermoelectric materials contain rare or toxic elements, so developing low-cost and high-performance thermoelectric materials is warranted. Here, we report the temperature-dependent interplay of three separate electronic bands in hole-doped tin sulfide (SnS) crystals. This behavior leads to synergistic optimization between effective mass (m*) and carrier mobility (μ) and can be boosted through introducing selenium (Se). This enhanced the power factor from ~30 to ~53 microwatts per centimeter per square kelvin (μW cm−1 K−2 at 300 K), while lowering the thermal conductivity after Se alloying. As a result, we obtained a maximum figure of merit ZT (ZTmax) of ~1.6 at 873 K and an average ZT (ZTave) of ~1.25 at 300 to 873 K in SnS0.91Se0.09 crystals. Our strategy for band manipulation offers a different route for optimizing thermoelectric performance. The high-performance SnS crystals represent an important step toward low-cost, Earth-abundant, and environmentally friendly thermoelectrics.

Inside Back Cover: Earth-Abundant Cu2CoSnS4Nanofibers for Highly Efficient H2Evolution at Soft Interfaces (ChemNanoMat 7/2015)

ChemNanoMat ◽  
2015 ◽  
Vol 1 (7) ◽  
pp. 528-528
Author(s):  
Faruk Ozel ◽  
Adem Yar ◽  
Emre Aslan ◽  
Emre Arkan ◽  
Abdalaziz Aljabour ◽  
...  
Keyword(s):  
Back Cover ◽  
Soft Interfaces ◽  
Highly Efficient ◽  
Earth Abundant

Highly efficient n-(Bi, Sb)2Te3 thermoelectric materials for temperatures below 200 K

2000 ◽  
Vol 34 (4) ◽  
pp. 376-380 ◽  
Author(s):  
V. A. Kutasov ◽  
L. N. Luk’yanova ◽  
P. P. Konstantinov
Keyword(s):  
Thermoelectric Materials ◽  
Highly Efficient

Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting

2014 ◽  
Vol 43 (22) ◽  
pp. 7787-7812 ◽  
Author(s):  
Jingrun Ran ◽  
Jun Zhang ◽  
Jiaguo Yu ◽  
Mietek Jaroniec ◽  
Shi Zhang Qiao
Keyword(s):  
Water Splitting ◽  
Cost Effective ◽  
Photocatalytic Water Splitting ◽  
Highly Efficient ◽  
Earth Abundant

Active and robust cocatalysts constructed from earth-abundant elements greatly contribute to the highly efficient, stable and cost-effective photocatalytic water splitting.

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