Speeding protons with metal vacancies

Science ◽  
2020 ◽  
Vol 370 (6516) ◽  
pp. 525-526
Author(s):  
Fengmei Wang ◽  
Jun He
Keyword(s):  
Metal Vacancies

Role of Metal Vacancies in the Mechanism of Thermal Degradation of InGaN Quantum Wells

2021 ◽  
Vol 13 (6) ◽  
pp. 7476-7484
Author(s):  
Julita Smalc-Koziorowska ◽  
Ewa Grzanka ◽  
Artur Lachowski ◽  
Roman Hrytsak ◽  
Mikolaj Grabowski ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Quantum Wells ◽  
Metal Vacancies ◽  
Ingan Quantum Wells

CdPS3 nanosheets-based membrane with high proton conductivity enabled by Cd vacancies

Science ◽  
2020 ◽  
Vol 370 (6516) ◽  
pp. 596-600 ◽  
Author(s):  
Xitang Qian ◽  
Long Chen ◽  
Lichang Yin ◽  
Zhibo Liu ◽  
Songfeng Pei ◽  
...  
Keyword(s):  
Transition Metal ◽  
Proton Transport ◽  
Lithium Ion ◽  
Proton Donor ◽  
Ion Conductivity ◽  
Energy Storage And Conversion ◽  
High Proton Conductivity ◽  
High Proton ◽  
Metal Vacancies ◽  
Lithium Ion Conductivity

Proton transport in nanochannels under humid conditions is crucial for the application in energy storage and conversion. However, existing materials, including Nafion, suffer from limited conductivity of up to 0.2 siemens per centimeter. We report a class of membranes assembled with two-dimensional transition-metal phosphorus trichalcogenide nanosheets, in which the transition-metal vacancies enable exceptionally high ion conductivity. A Cd0.85PS3Li0.15H0.15 membrane exhibits a proton conduction dominant conductivity of ~0.95 siemens per centimeter at 90° Celsius and 98% relative humidity. This performance mainly originates from the abundant proton donor centers, easy proton desorption, and excellent hydration of the membranes induced by cadmium vacancies. We also observed superhigh lithium ion conductivity in Cd0.85PS3Li0.3 and Mn0.77PS3Li0.46 membranes.

scholarly journals Effect of metal vacancies on the band structure of Nb, Zr, and Y diborides

2003 ◽  
Vol 45 (9) ◽  
pp. 1617-1621 ◽  
Author(s):  
I. R. Shein ◽  
N. I. Medvedeva ◽  
A. L. Ivanovskii
Keyword(s):  
Band Structure ◽  
Metal Vacancies

scholarly journals The role of metal vacancies during high-temperature oxidation of alloys

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Richard P. Oleksak ◽  
Monica Kapoor ◽  
Daniel. E. Perea ◽  
Gordon R. Holcomb ◽  
Ömer N. Doğan
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Temperature Oxidation ◽  
Metal Vacancies

Hydrogen in metal vacancies

1994 ◽  
Vol 55 (10) ◽  
pp. 941-944
Author(s):  
T. Schober ◽  
J. Reinertz ◽  
W.A. Oates ◽  
H. Wenzl
Keyword(s):  
Metal Vacancies
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