scholarly journals Three-dimensional grain boundary spectroscopy in transparent high power ceramic laser materials

2008 ◽  
Vol 16 (9) ◽  
pp. 5965 ◽  
Author(s):  
Mariola O. Ramirez ◽  
Jeffrey Wisdom ◽  
Haifeng Li ◽  
Yan L. Aung ◽  
Joseph Stitt ◽  
...  
Keyword(s):  
Grain Boundary ◽  
High Power ◽  
Three Dimensional ◽  
Laser Materials ◽  
Ceramic Laser

Sintering ceramic laser materials with a high power 83 GHz beam

2008 ◽  
Author(s):  
Arne W. Fliflet ◽  
Melissa Hornstein ◽  
Steven H. Gold ◽  
Manfred Kahn ◽  
M. Ashraf Imam
Keyword(s):  
High Power ◽  
Laser Materials ◽  
Ceramic Laser

A three-dimensional porous LiFePO4 cathode material modified with a nitrogen-doped graphene aerogel for high-power lithium ion batteries

2015 ◽  
Vol 8 (3) ◽  
pp. 869-875 ◽  
Author(s):  
Bo Wang ◽  
Wael Al Abdulla ◽  
Dianlong Wang ◽  
X. S. Zhao
Keyword(s):  
Lithium Ion Batteries ◽  
High Power ◽  
Diffusion Length ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Graphene Aerogel ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Lifepo4 Cathode

LFP@N-GA with (010) facet oriented LFP NPs embedded in N-GA provides both rapid Li+ and electron pathways in the electrode as well as short Li+ diffusion length in LFP crystals.

Epitaxial Aluminum Electrodes on Theta Rotated Y-X LiTaO3 Piezoelectric Substrate for High Power Durable SAW Duplexers.

2004 ◽  
Vol 833 ◽  
Author(s):  
Osamu Nakagawara ◽  
Hironori Suzuki ◽  
Shuji Yamato ◽  
Masayuki Hasegawa ◽  
Hideharu Ieki
Keyword(s):  
Grain Boundary ◽  
High Power ◽  
Intermediate Layer ◽  
Deposition Temperature ◽  
Film Material ◽  
Epitaxial Relationship ◽  
Self Diffusion ◽  
Process Sequence ◽  
Aluminum Electrodes ◽  
Piezoelectric Substrate

ABSTRACTHigh power durable electrodes have been successfully grown on 38.5° rotated Y-X LiTaO3 piezoelectric substrates featuring epitaxial Al films with a pseudo-homoepitaxial Ti intermediate layer. We found that a two-step process sequence in the deposition temperature of an intermediate layer could make it possible for an Al/Ti structure to grow epitaxially on low-cut-angle Y-X LiTaO3. Specified epitaxial relationship was Al(111)<011>//Ti(001)<100>//LiTaO3(001)<100>. Duplexers with epitaxial Al electrodes had a breakdown power above 6 W and more than ten times longer lifetime in contrast to filters with polycrystalline electrodes of which the breakdown power is 3.4 W. Epitaxial electrodes with extremely less grain boundary can improve power durability because self-diffusion of Al atoms occurs mainly in the grain boundary of the film. Material variation of epitaxial electrodes will be discussed as well.

scholarly journals Three-dimensional stable lithium metal anode with nanoscale lithium islands embedded in ionically conductive solid matrix

2017 ◽  
Vol 114 (18) ◽  
pp. 4613-4618 ◽  
Author(s):  
Dingchang Lin ◽  
Jie Zhao ◽  
Jie Sun ◽  
Hongbin Yao ◽  
Yayuan Liu ◽  
...  
Keyword(s):  
High Power ◽  
Power Output ◽  
Three Dimensional ◽  
Rechargeable Batteries ◽  
Solid Matrix ◽  
Side Reactions ◽  
Surface Protection ◽  
Metal Anode ◽  
Practical Applications ◽  
Significant Step

Rechargeable batteries based on lithium (Li) metal chemistry are attractive for next-generation electrochemical energy storage. Nevertheless, excessive dendrite growth, infinite relative dimension change, severe side reactions, and limited power output severely impede their practical applications. Although exciting progress has been made to solve parts of the above issues, a versatile solution is still absent. Here, a Li-ion conductive framework was developed as a stable “host” and efficient surface protection to address the multifaceted problems, which is a significant step forward compared with previous host concepts. This was fulfilled by reacting overstoichiometry of Li with SiO. The as-formed LixSi–Li2O matrix would not only enable constant electrode-level volume, but also protect the embedded Li from direct exposure to electrolyte. Because uniform Li nucleation and deposition can be fulfilled owing to the high-density active Li domains, the as-obtained nanocomposite electrode exhibits low polarization, stable cycling, and high-power output (up to 10 mA/cm2) even in carbonate electrolytes. The Li–S prototype cells further exhibited highly improved capacity retention under high-power operation (∼600 mAh/g at 6.69 mA/cm2). The all-around improvement on electrochemical performance sheds light on the effectiveness of the design principle for developing safe and stable Li metal anodes.

Sign in / Sign up

Export Citation Format

Share Document