Results 151 to 160 of about 7,647 (298)

Thrust chamber material technology program [PDF]

This report covers work performed at Pratt & Whitney on development of copper-based materials for long-life, reusable, regeneratively cooled rocket engine thrust chambers. The program approached the goal of enhanced cyclic life through the application of
Andrus, J. S., Bordeau, R. G.
core   +1 more source

pectrographic Analysis of Hafnium in Zirconium Oxide

Journal of the Spectroscopical Society of Japan, 1959
Shoushiro SAKAI, Tokunosuke NAKAJIMA, Saburo ISHIGURO   +2 more
openaire   +2 more sources

Research Progress on Halide Solid‐State Electrolytes: Synthesis, Mechanism, and Modification

Carbon Energy, EarlyView.
This review comprehensively summarizes the research progress on halide solid‐state electrolytes, including their classifications, synthesis methods, ion conduction mechanisms, and modification strategies. It also proposes effective modification strategies to address critical issues, such as air stability and interface compatibility.
Weifeng Shen, Ping Liu, Long Wang, Haijun Yang, Jiawen Chen, Fengxiang Chen, Shenghui Shen, Guoxiang Pan, Zhong Qiu, Xinqi Liang, Yongqi Zhang, Jiayuan Xiang, Ming Song, Wei Wen, Ruyi Fang, Hui Huang, Jun Zhang, Qi Liu, Yang Xia, Wenkui Zhang, Xinhui Xia   +20 more
wiley   +1 more source

Metallurgy: A compilation [PDF]

A technology utilization program is presented for the dissemination of information on technological developments which have potential utility outside the aerospace and nuclear communities.

core   +1 more source

(NH4)2[Tc2O2(S2O7)4]: An Unexpected Technetium(V)‐Sulfate From the Reaction of (NH4)(TcO4) With SO3

Chemistry – A European Journal, EarlyView.
The reaction of the radioactive pertechnetate (99TcO4)− with the oxidizer SO3 leads to blue crystals of (NH4)2[Tc2O2(S2O7)4]. The complex dimeric [Tc2O2(S2O7)4]2− anion exhibits the technetium in the oxidation state V, showing that reduction occurs during the reaction.
Stefan Sutorius, Julian Heinen, David van Gerven, Jörn Bruns, Erik Strub, Mathias S. Wickleder   +5 more
wiley   +1 more source

Ultrafast measurements of polarization switching dynamics on ferroelectric and anti-ferroelectric hafnium zirconium oxide. [PDF]

Appl Phys Lett, 2019
Si M, Lyu X, Shrestha PR, Sun X, Wang H, Cheung KP, Ye PD.   +6 more
europepmc   +1 more source

Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis

Chemistry – A European Journal, EarlyView.
Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger, Nika Podlesnik, Francesco Mele, Michael Schnürch   +3 more
wiley   +1 more source

Stable Hexagonal V2B2 Monolayer as a Promising Nonprecious Electrocatalyst for Hydrogen Evolution Reaction: Insights from First‐Principles Calculations

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work discovered stable V2B2 monolayer exhibits promising HER catalytic activity via unbiased swarm‐intelligence structural search. Further doping with transition metals such as Sc, Y, Ti, Zr, Hf significantly enhances the HER activity. Bader charge analysis reveals a linear correlation between ΔGH* and the electron gain by the hydrogen atom, which
Ziqi Li, Xue Li, Sheng Wang, Siyu Lu, Guochun Yang, Zhiyong Tang   +5 more
wiley   +1 more source

Challenges and Advancements in High‐Nickel Layered Oxides Cathode Material for Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
As a representative high‐energy‐density cathode material for lithium‐ion batteries, NCM811 still encounters critical challenges. This review provides a comprehensive analysis of its failure mechanisms, summarizes recent modification strategies, and highlights the contributions of advanced characterization and simulation techniques to performance ...
Yunshan Zheng, Junfeng Li, Yijing Liu, Lanlan Feng, Wen Liu, LiLi Lin, Yiming Wang, Haoyang Peng, Jian Lu, Dong Zhou, Baohua Li   +10 more
wiley   +1 more source

Ultra‐High Nickel Oxides as Cathode Materials for High‐Energy Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Ultra‐high nickel layered oxides are among the most promising cathode materials for high‐energy lithium‐ion batteries, offering high specific capacity and significant utilization in both conventional lithium‐ion batteries and solid‐state batteries. This review article introduces the basic structure of ultra‐high nickel layered oxides, then delves into ...
Yilong Han, Changlu Zheng, Zhichao Liu, Peng Chen, Sheng Liu, Guoran Li, Xue‐Ping Gao   +6 more
wiley   +1 more source