Since the discovery of graphene, its huge specific surface area, good electrical conductivity, transparency and excellent mechanical properties have attracted the attention of researchers In recent years, research on graphene has made it possible in electrode materials and organisms.

1 The fundamental difference is raw materials This is the total source of the different performances of the two.

As the main electric bicycle manufacturer in China, the light weight reduction of the lithium battery is one of the important means for Aucma to bring its products close to the market Accompanied by light weight, it is required for miniaturization, energy saving and performance optimization.

Huigen Yu, chief engineer of Beijing New Energy Automobile Co, Ltd.

The dual-points policy is about to be implemented, the ban on the sale of fuel vehicles is on the agenda, and the development of new energy vehicles is listed as the top-level policy of the national industrial planning The power lithium battery industry has seen the country’s firm determination to develop new energy, and also brings significant historical opportunities to related industries and companies.

With the step-by-step clarity and refinement of national and local new energy policies, as well as the opening of new energy vehicle policies in cities such as Beijing and Shanghai, a number of new energy vehicles were also intensively released in 2015, truly entering the market, regardless of imported cars, the joint venture car or self-owned brand, more and more new energy vehicles are available for consumers to choose Nowadays, new energy vehicles that have appeared in China's market, including those already on the market or coming soon, are mainly pure electric vehicles, such as BYD e6, JAC iEV4, BAIC E150, SAIC Roewe E50, Qichen Chenfeng, Tengshi, BMW, ZINORO, BMW i3 and i8, and Tesla.

Our busy life makes us too busy to browse the dazzling information In order to facilitate our accurate and rapid access to the latest and most valuable graphene research trends, we specially select the research hot spots in the graphene field in the recent week for your attention.

New energy vehicle purchase subsidies are expected to be withdrawn by 2020 At that time, how should new energy bus companies work without subsidies? Accelerate the promotion of new energy public transportation and the Ministry ofOn the afternoon of the 27th, Zhanchuan Li, deputy inspector of the Policy Research Office of the Ministry of Transport, revealed that the Ministry of Transport will actively coordinate the financial department to rationally coordinate the adjusted rural passenger transport and taxi fuel subsidy funds to support public transport development and new energy vehicles.

On April 28, the announcement of the old plastic film and plastic packaging products company, Great Southeast, showed that the company will terminate the implementation of the “300 million Ah high-energy lithium-ion battery construction project” It is understood that the implementation of the project is the company's wholly-owned subsidiary Zhejiang Green Sea, the project is expected to have a total investment of 79.

According to the physical formula R=U/I, the test equipment allows the lithium battery to forcibly pass a large constant DC current (usually a large current of 40A to 80A) in a short time (generally 2 to 3 seconds) Measure the voltage at both ends of the lithium battery and calculate the current internal resistance according to the formula.