{"id":66444,"date":"2019-09-11T06:45:02","date_gmt":"2019-09-11T04:45:02","guid":{"rendered":"https:\/\/rss.nova-institut.net\/public.php?url=https%3A%2F%2Fwww.chemie.de%2Fnews%2F1162535%2Fgefaehrliches-wildgras-fuer-die-verwendung-in-batterien.html%3FWT.mc_id%3Dca0065%26pk_campaign%3Dca0065"},"modified":"2019-09-08T16:32:51","modified_gmt":"2019-09-08T14:32:51","slug":"dangerous-wild-grass-will-be-used-in-batteries","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/dangerous-wild-grass-will-be-used-in-batteries\/","title":{"rendered":"Dangerous wild grass will be used in batteries"},"content":{"rendered":"

Hogweed, which has grown over vast territories of\u00a0Russia, can be\u00a0useful as\u00a0a\u00a0material for batteries. Scientists from NUST MISIS have investigated the possibilities of\u00a0fibrous substances in\u00a0the plant stems. They have turned them into electrodes\u00a0\u2014 elements of\u00a0devices capable of\u00a0storing energy. It\u00a0was experimentally proven that the treated dangerous plant can successfully replace traditional sources of\u00a0energy without compromising the quality of\u00a0the batteries.<\/strong><\/p>\n

\"20090415_gaf_ux5_120_1_picture\"Supercapacitors are storage devices. They are distinguished from traditional batteries by\u00a0their high power, long shelf life, and long service life. Such properties are partly explained by\u00a0the fact that activated carbons with a\u00a0highly developed surface with a\u00a0large number of\u00a0pores of\u00a0different sizes, act as\u00a0the electrode material. These pores provide an\u00a0increase in\u00a0the area of\u00a0the electrodes, on\u00a0which the maximum volume of\u00a0the accumulated charge directly depends. Scientists are currently trying to\u00a0receive carbon materials from various plant raw materials, especially from agricultural waste\u00a0\u2014 from the coconut, almond and walnut shells, husk remaining after cereal processing, etc.<\/p>\n

Researchers from NUST MISIS have suggested that the optimal electrode properties can be\u00a0found in\u00a0hogweed stems. They consist of\u00a0a\u00a0firm bark and a\u00a0soft inner core, similar to\u00a0a\u00a0sponge, forming a\u00a0diverse porous structure. This design is\u00a0effective for using carbon material as\u00a0the basis of\u00a0electrodes for supercapacitors. In\u00a0order to\u00a0turn hogweed stalks into a\u00a0material suitable for use as\u00a0electrodes, it\u00a0was necessary to\u00a0find the optimal processing technology for them.<\/p>\n

\"\u0441\u0443\u043f\u0435\u0440\u043a\u043e\u043d\u0434\u0435\u043d\u0441_picture\"The dry stalks of\u00a0the hogweed were cut into bars about a\u00a0centimeter long. Then, to\u00a0remove various inorganic compounds contained in\u00a0the stems, they were treated with hydrochloric acid, washed and dried. To\u00a0obtain a\u00a0carbon material, crushed hogweed stems were saturated with carbon dioxide at\u00a0a\u00a0temperature of\u00a0400 \u00b0 C. In\u00a0the next stage, the obtained material was mixed with potassium hydroxide and activated, that\u00a0is, the appeared pores were opened in\u00a0an\u00a0argon atmosphere at\u00a0various temperatures.<\/p>\n

Processing the primary carbon material at\u00a0a\u00a0temperature of\u00a0900\u00b0\u00a0\u0421 led to\u00a0the formation of\u00a0a\u00a0surface with a\u00a0large number of\u00a0pores 2\u20134 nm in\u00a0size.<\/p>\n

\u201cThe main parameter of\u00a0the supercapacitor is\u00a0capacity, which means a\u00a0measure of\u00a0the ability to\u00a0accumulate an\u00a0electric charge,\u00a0\u2014 Oleg Levin, associate professor at\u00a0the Department of\u00a0Electrochemistry of\u00a0St. Petersburg State University, explained. \u2014\u00a0The capacity obtained from hogweed stems is\u00a0at\u00a0the same level as\u00a0the one obtained from the other materials. Of\u00a0course, when using, for example, graphene, it\u00a0will be\u00a0higher. However, the use of\u00a0plant waste material for the production of\u00a0active carbon is\u00a0without a\u00a0doubt a\u00a0global trend. From this perspective, the work of\u00a0scientists is\u00a0promising and deserves attention\u201d.<\/p>\n

However, the leader of\u00a0the project, the head of\u00a0the Department of\u00a0Physical Chemistry at\u00a0NUST MISIS Professor Mikhail Astakhov emphasizes that the use of\u00a0hogweed stems for the production of\u00a0electrodes on\u00a0an\u00a0ongoing basis may encounter great difficulties. Indeed, to\u00a0obtain raw materials you will have to\u00a0travel all over the country, cutting down the plant and taking it\u00a0to\u00a0the enterprise, since it\u00a0is\u00a0unreasonable to\u00a0create sown areas for a\u00a0dangerous wild plant. Sooner or\u00a0later, the reserves of\u00a0the \u201cwild\u201d hogweed may run low. In\u00a0this case, the technology created for its processing will simply not be\u00a0needed.<\/p>\n

On\u00a0the other hand, at\u00a0present, areas covered by\u00a0powerful hogweed that inhibits the development of\u00a0other seeds that have fallen into the soil are only increasing.<\/p>\n","protected":false},"excerpt":{"rendered":"

Hogweed, which has grown over vast territories of\u00a0Russia, can be\u00a0useful as\u00a0a\u00a0material for batteries. Scientists from NUST MISIS have investigated the possibilities of\u00a0fibrous substances in\u00a0the plant stems. They have turned them into electrodes\u00a0\u2014 elements of\u00a0devices capable of\u00a0storing energy. It\u00a0was experimentally proven that the treated dangerous plant can successfully replace traditional sources of\u00a0energy without compromising the quality […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","nova_meta_subtitle":"","footnotes":""},"categories":[5572],"tags":[14796,5627],"supplier":[16110],"class_list":["post-66444","post","type-post","status-publish","format-standard","hentry","category-bio-based","tag-batteries","tag-energy","supplier-the-national-university-of-science-and-technology-nust-misis"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/66444","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=66444"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/66444\/revisions"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=66444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=66444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=66444"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=66444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}