Chemical Diffusivity for Hydrogen Storage: Pneumatochemical Intermittent Titration Technique

2013 ◽  
Vol 117 (39) ◽  
pp. 19771-19785 ◽  
Author(s):  
Young-Hun Kim ◽  
Eui-Chol Shin ◽  
Sun-Jung Kim ◽  
Choong-Nyeon Park ◽  
Jaekook Kim ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Chemical Diffusivity ◽  
Titration Technique

scholarly journals Galvanostatic Intermittent Titration Technique Reinvented: Part II. Experiments

2021 ◽  
Vol 168 (12) ◽  
pp. 120503 ◽  
Author(s):  
Stephen Dongmin Kang ◽  
Jimmy Jiahong Kuo ◽  
Nidhi Kapate ◽  
Jihyun Hong ◽  
Joonsuk Park ◽  
...  
Keyword(s):  
Particle Surface ◽  
Chemical Diffusion ◽  
Total Conductivity ◽  
Diffusion Measurement ◽  
Chemical Diffusivity ◽  
Modified Method ◽  
Titration Procedure ◽  
Galvanostatic Intermittent Titration Technique ◽  
Li Ion ◽  
Titration Technique

Following a critical review of the galvanostatic intermittent titration technique in Part I, here we experimentally demonstrate how to extract chemical diffusivity with a modified method. We prepare dense bulk samples that ensure diffusion-limitation. We utilize the scaling with t relax + τ − t relax (t relax: relaxation time; τ: pulse duration), avoiding problems with composition-dependent overpotentials. The equilibrium Nernst voltage is measured separately using small porous particles. This separation between the diffusion measurement and the titration procedure is critical for performing each measurement in a reliable setting. We report the chemical diffusion coefficients of LixNi1/3Mn1/3Co1/3O2 and their activation energy. We extract ionic conductivity and compare it with total conductivity to confirm ion-limitation in chemical diffusion. The measurements suggest that the time scale for diffusion in typical Li-ion battery particles could be much shorter than that of the intercalation/deintercalation processes at the particle surface (Biot number less than 0.1).

Effects of Milling and Hydriding-Dehydriding Cycling on the Hydrogen-Storage Behaviors of a Magnesium-Nickel-Tantalum Fluoride Alloy

2015 ◽  
Vol 53 (12) ◽  
pp. 904-910 ◽  
Author(s):  
Myoung Youp Song ◽  
Daniel R. Mumm ◽  
Young Jun Kwak ◽  
Hye Ryoung Park
Keyword(s):  
Hydrogen Storage

Effect of CeO$lt;inf$gt;2$lt;/inf$gt;-based Solid Solutions on Hydrogen Storage Kinetic Properties of Mg$lt;inf$gt;2$lt;/inf$gt;Ni Alloy

2014 ◽  
Vol 29 (12) ◽  
pp. 1241
Author(s):  
ZHANG Guo-Fang ◽  
ZHANG Yang-Huan ◽  
LIU Zhuo-Cheng ◽  
XU Jian-Yi ◽  
ZHANG Yin
Keyword(s):  
Hydrogen Storage ◽  
Solid Solutions ◽  
Kinetic Properties ◽  
Ni Alloy

Polyaniline Nanostructures for Hydrogen Storage Applications

2008 ◽  
Author(s):  
Sesha Srinivasan ◽  
Michael Niemann ◽  
Ayala Phani ◽  
Ashok Kumar ◽  
Yogi Goswami ◽  
...  
Keyword(s):  
Hydrogen Storage
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