last week we New lignin-based duct tapeHere, we explore another potential application for this biopolymer, which is discarded during paper manufacturing.In addition to Rechargeable and non-rechargeable conventional batteries, there is another type of battery that has been the focus of scientific research over the last few years, the fuel cell. Hydrogen and methanol have been the main elements used so far, but both have their drawbacks. The former is usually obtained from natural gas, non-renewable energy sources, releasing carbon dioxide in the process. While the latter is abundant in nature, it also emits greenhouse gases when used as a fuel. however, Perspectives based on the circular economyscientists have discovered a way to use waste to power batteries.
To make paper from wood, the cellulose must be separated. ligninDespite having some interesting uses, large amounts of this material end up in landfills every day. One of his is being studied by the Institute of Organic Electronics at Linköping University in Sweden. lignin-based fuel cell It produces electricity in a manner similar to current ethanol or methanol batteries. Nevertheless, this polymer must be treated before it can be used as fuel. This means that the complex lignin molecule must be broken down to yield the energy-rich compound benzenediol. One of them, catechol, which makes up 7% of lignin, is the substance chosen by Swedish researchers as a core fuel.
That said, catechol is not compatible with metal electrodes such as the platinum-based ones used in Fuel cellResearchers were therefore forced to use polymer electrodes instead. Specifically, a polymer called PEDOT:PSS, whose application has so far been largely unexplored in this field.
The result is an innovative fuel cell built from cheaper materials than those available on the market while avoiding carbon dioxide emissions. The system has yet to be improved, but it is undoubtedly a revolutionary technology with great potential.
Current uses of fuel cells
Fuel cells are less prevalent than lithium and cadmium batteries, but they can provide energy in many situations. Transportation, especially city buses, is one of the most common uses. But you can also use it like this: portable generator, producing 5 to 500 kW. Finally, it is also expected to play an important role in home power generation, which is already being piloted in Japan.Broadly speaking, the main Advantages of fuel cells Considerable range, instant recharge, and light weight.
sauce: Cytec Daily
