{"id":415,"date":"2022-04-19T12:11:30","date_gmt":"2022-04-19T10:11:30","guid":{"rendered":"https:\/\/2dchem.org\/?p=415"},"modified":"2022-04-19T12:12:21","modified_gmt":"2022-04-19T10:12:21","slug":"graphene-acid-makes-lithium-ion-batteries-more-efficient","status":"publish","type":"post","link":"https:\/\/2dchem.org\/index.php\/2022\/04\/19\/graphene-acid-makes-lithium-ion-batteries-more-efficient\/","title":{"rendered":"Graphene acid makes lithium-ion batteries more efficient"},"content":{"rendered":"[vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none”][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_shadow=”none” column_border_radius=”none” column_link_target=”_self” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” tablet_text_alignment=”default” phone_text_alignment=”default” column_border_width=”none” column_border_style=”solid” bg_image_animation=”none”][vc_column_text]Scientists from the Czech Advance Technology and Research Institute (CATRIN) of Palack\u00fd University, in collaboration with VSB-Technical University of Ostrava and Saarland University in Germany, developed a new anode for lithium-ion batteries (LIBs) based on a graphene acid (GA)\u2014a densely carboxylated graphene derivative. The new anode outperforms previously reported anode materials of this family and could store electric charge significantly better even than a high-quality monolayer graphene. The results were published in the prestigious journal for energy research\u00a0Advanced Energy Materials<\/em>.<\/strong><\/p>\n

\u201cAromatic carboxylic acids are stable and high-energy organic LIB anode materials owing to their low reduction potential and coordination ability towards lithium. Yet, these molecules are non-conductive and soluble in the electrolytes of the batteries. For this reason, their advantages cannot be translated into practice yet. Graphene acid helped us to overcome most of these challenges,\u201d said Ievgen Obraztsov, the first author of the article.<\/p>\n

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\u201cThe high performance is attributed to the conductivity of GA, very high among the family of densely functionalized graphenes, as well as to the binding proclivity of Li ions to the carboxylic groups, which electronically communicate with the graphene backbone,\u201d explained Aristides Bakandritsos, who is one of the main authors of the work.<\/p>\n

\u201cThe results demonstrate the possibility of developing very efficient battery materials using such effective chemistry that enables to install on graphene suitable chemical groups at high density for interacting with the energy carriers,\u201d added Michal Otyepka, who is the Head of CATRIN-RCPTM and Principal Investigator of European projects related to the chemistry of graphene.<\/p>\n

\u201cIt is hard to imagine our life today without batteries as the demand constantly grows. The performance of graphene acid is indeed appealing and our society needs such advances to meet other challenges in the future. With the related raw materials in LIBs becoming critical, an important aspect of the work is that the developed versatile chemistry can lead to new avenues for identifying materials for post-Lithium energy storage, which will be one of the main directions of CATRIN-RCPTM\u2019s research in the next years,\u201d concluded Radek Zboril, Scientific Director of CATRIN-RCPTM.<\/p>\n

The article entitled \u201cGraphene acid for lithium-ion batteries\u2014carboxylation boosts storage capacity in graphene\u201d will appear online\u00a0https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1002\/aenm.202103010<\/a>[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"

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