Batteries as supercapacitors are electrical storage devices. Battery is more widely used due to its ability to store more energy for a given weight and volume: it has a better energy density. Supercapacitor on the other hand can be charged and discharged very quickly (or slowly if you do not need power): it has a very high power density. But the differences between these two systems do not stop there. The evolution of these features with the technological improvements and declining prices mean that supercapacitors are increasingly used and will be even more in the future.
Internet news articles are not always as serious as scientific publications. We must succeed in making the distinguish between disguised advertisements and really interesting announcements. Since we do not have time to check everything and anything dealing with articles dedicated in hyper-capacitor.com, here is a selection of articles that will be regularly supplemented by other articles on supercapacitors or on related subjects:
There are dozens of scientific publications each year on supercapacitors. Some scientific publications are the object of an article dedicated on SupercapTech.com. Other publications are interesting but writing articles is long and sometimes laborious and some are then only quoted in some articles. Here is a list of scientific publications on supercapacitors or to related topics:
China takes the lead in adopting the all-electric bus equipped with supercapacitors. The Chinese company Sunwin, a joint venture between Volvo and China's largest automaker SAIC had already made a big publicity stunt in 2010 by providing 61 electric buses using supercapacitors to serve the World Expo 2010 of Shanghai. Buses with supercapacitors of Sunwin brought in their 2010 version an autonomy from 3 to 6 km. Supercapacitors are then charged on each bus stop with a pantograph (like a tram). 30 seconds are enough to charge the bus to 50% and it takes 80 seconds to charge to 100%. Here is a video where we see the supercapacitor bus to recharge in a bus stop:
A new electric bus was put into operation on July 28th, 2015 in China. Its special feature: a full charge in just 10 seconds thanks to its supercapacitors. This bus travels a line of 11 km with 24 stops in Ningbo city on the East coast of China. In the next three years, no less than 1,200 of these buses will be used for public transport in the city, where the electric bus plant is located. This bus is recharged at stop stations, while passengers getting on or off the bus. Each charge allows the bus to travel up to five kilometers. In addition, the bus consumes 30 to 50 percent less energy than other electric vehicles.
The Chinese company "Ningbo CSR New Energy Technology", a subsidiary of CSR Zhuzhou Electric Locomotive (the largest train manufacturer in the world) developed graphene supercapacitors with high capacitance. These new supercapacitors are intended to improve the efficiency of electric buses, trolleybuses and trams with fast recharge and to increase their autonomy. Thus, a supercapacitor trolleybus should be able to travel 10 km after a charge of one minute, against 6 km for a charge of 30 seconds with the supercapacitor trolleybuses currently operated by the company. The goal is to reduce the number of intermediate charge to better adapt to the requirements of planning and urban construction.
The Chinese company Ningbo CSR New Energy Technology has delivered to its parent company CSR Zhuzhou Electric Locomotive its first batch of 5000 supercapacitors 7500 Farads. This is the largest mass production in the world of supercapacitors with such capacitance. The most advanced countries in the field of supercapacitors are South Korea, the United States, Japan and China. Today there are more than a dozen manufacturers worldwide able to supply large quantities of supercapacitors.
Many people confuse supercapacitor and capacitor by thinking that a supercapacitor is just an improved capacitor. In fact, it is a little bit true from an electronic point of view, but it is wrong from a technological point of view. Indeed, a supercapacitor has the same characteristics of charge and discharge as a capacitor. Except we do not manage necessarily in the same way a 200V 100μF capacitor and a 2.7V 3000F supercapacitor. On the other hand, a supercapacitor is not designed in the same way as a ceramic capacitor or an electrolytic capacitor.