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Rechargeable Sodium Metal Batteries (RSMBs) have garnered extensive attention as one of the most promising energy storage technologies due to their high energy density and low cost. However, practical applications of metal sodium batteries still face challenges such as the instability of the solid electrolyte interphase (SEI) and the continuous growth of dendrites, which deteriorate the cycling stability of the batteries and give rise to safety concerns, thereby limiting further practical applications.
2024-05-17
Constant Current Intermittent Titration GITT Test Tutorial
In electrochemical energy storage devices, both electronic conduction and ion diffusion play a crucial role in determining the performance of electrode materials. Taking lithium-ion batteries as an example (Figure 1), electrons are transported to the surface of the material through the external circuit, while ions diffuse through the internal circuit, ultimately leading to electrochemical reactions among the active material, electrons, and ions, enabling the conversion between electrical and chemical energy. Generally, the electron transfer in the external circuit is faster than ion diffusion in the internal circuit. Therefore, continuous improvement of the material interface properties is necessary to achieve rapid charge balance, avoid net charge accumulation on the material surface, and reduce polarization during fast charge-discharge processes [1]. In summary, ion diffusion within the material is a critical reaction process and a limiting step in electrochemical reactions. Accurate characterization of ion diffusion is of paramount importance for guiding the design and synthesis of electrode materials.
2024-05-17
State Grid Corporation of China (State Grid Corporation of China) has carried out the second batch of high-quality themed education and publicity on "not forgetting our original aspiration and keeping our mission in mind", promoting the study and implementation of the socialist ideology with Chinese characteristics in the new era to go deeper, deeper, and more practical. We have strengthened positive guidance, strengthened public opinion supervision, promoted the main theme, gathered positive energy, highlighted learning while improving, combined with measures to serve the people and work hard for entrepreneurship, and demonstrated a good image of the company's reform and development serving the people. Reading it gives me a lot of emotions.
2024-05-17
The Mid Autumn Festival holiday does not change the enthusiasm for A-share institutional research. Last week (September 9th to September 12th), the number of institutional research continued to rise, and the themes of institutional research gradually became scattered, while the situation of enterprise orders became a focus of institutional attention. During this period, many companies revealed that their orders were full.
2024-05-17
In 2016, Shanghai issued the "Emission Standards for Air Pollutants from Coal Fired Power Plants", which required coal-fired power generation boilers to adopt smoke temperature control and other effective measures to eliminate phenomena such as "gypsum rain" and "colored plumes". The treatment of "colored plumes" began to receive high attention from local governments. As of the end of 2018, multiple provincial and municipal governments or relevant departments such as Tianjin, Zhejiang, and Hebei have requested comprehensive treatment of "colored plumes" from ultra-low emission coal-fired power plants. However, currently, various terms such as "gypsum rain", "chimney rain", "big white smoke", "colored smoke feathers", "wet smoke feathers", "blue smoke", "black smoke", "yellow smoke", etc. are seen in government documents, academic papers, and media, leaving the government and enterprises at a loss. Therefore, this article conducts a comprehensive and systematic definition study on colored plumes, providing decision-making basis for objectively analyzing the treatment of plumes in coal-fired power plants that meet ultra-low emission requirements.
2024-05-17
80% of used new energy vehicles have a service life of less than two years
At the recent China New Energy Used Car Development Forum held in Guiyang, it was learned that in May, China's new energy used cars increased by 25% year-on-year, mainly concentrated in A-level and below models. 80% of new energy used cars have a service life of less than two years and a sales price range of less than 50000 yuan.
2024-05-17
On July 16th, at the on-site meeting of the national construction project fire administrative approval reform held in Dongguan, Guangdong, a decision was made to learn from the reform pilot experience of Guangdong, Shanghai and other places, and to promote the separation system of construction project fire design review, fire acceptance technical review and testing, and administrative approval nationwide.
2024-05-17
What is the NEWARE Button Battery All-in-One Battery Tester?
NEWARE WIHW-200-160CH-B button battery all in one battery tester, combines charging and discharging tests with constant temperature testing capabilities.
2024-05-17
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