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IMAGE: (a) Theoretical output potential, specific capacity and energy density for the KO2 and other typical K-ion battery cathodes. (b) XRD pattern and TEM images of KO2-RuO2@rGO cathode composites. The XRD. view more
Credit: @Science China Press
There is an urgent need for high-energy-density rechargeable batteries to further satisfy the ever-growing demand for electrical energy storage devices. Triggering the O-related anionic redox activities (e.g. typical Li/Na/K-O2 battery, and Li/Na-rich cathodes) have been regarded as the most promising capacity-boosting strategy for batteries. However, the practical realization of Li/Na/K-O2 battery, a gas-open cell architecture, is severely plagued by some gaseous O2-related intrinsic defects. For example, porous air cathode is easily clogged by hosting the solid O2 reduction products, resulting in the practical stored energy reveals far below the theoretical value. Moreover, due to the phase changes between gaseous O2
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Tuesday, December 15, 2020
The
U.S. Justice Department released the below information:
A
former Dublin, Ohio, man pleaded guilty in U.S. District Court today to
conspiring to steal exosome-related trade secrets concerning the research,
identification and treatment of a range of pediatric medical conditions.
Yu
Zhou, 50, also pleaded guilty to conspiring to commit wire fraud.
Zhou
admitted to conspiring to steal scientific trade secrets related to exosomes
and exosome isolation from Nationwide Children’s Hospital’s Research Institute
for his own personal financial gain in China.
“Today’s
plea underscores the Department of Justice’s commitment to protecting American
Abstract
One big challenge for long-lived inverted perovskite solar cells (PSCs) is that commonly used metal electrodes react with perovskite layer, inducing electrode corrosion and device degradation. Motivated by the idea of metal anticorrosion, here, we propose a chemical anticorrosion strategy to fabricate stable inverted PSCs through introducing a typical organic corrosion inhibitor of benzotriazole (BTA) before Cu electrode deposition. BTA molecules chemically coordinate to the Cu electrode and form an insoluble and polymeric film of [BTA-Cu], suppressing the electrochemical corrosion and reaction between perovskite and the Cu electrode. PSCs with BTA/Cu show excellent air stability, retaining 92.8 ± 1.9% of initial efficiency after aging for 2500 hours. In addition, >90% of initial efficiency is retained after 85°C aging for over 1000 hours. PSCs with BTA/Cu also exhibit good operational stability, and 88.6 ± 2.6% of initial efficiency is retained after continuous maximum
Ohio Couple Sold Secrets to China
An Ohio man has admitted to conspiring with his spouse to steal scientific trade secrets from a children s hospital and sell them to the People s Republic of China.
Former Dublin resident Yu Zhou and his 47-year-old wife, Li Chen, confessed to establishing a company in China to personally profit from cutting-edge research work done at Nationwide Children s Hospital in Columbus, Ohio.
Zhou and Chen worked in separate medical research labs at NCH s Research Institute for 10 years each, Zhou starting his job in 2007 and Chen beginning hers in 2008.
The couple were arrested in California in July 2019 and charged with conspiring to steal exosome-related secrets concerning the scientific research, identification, and treatment of a range of pediatric medical conditions.
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