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Kuniye

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Les batteries au graph\u00e8ne pourraient permettre de recharger son smartphone en seulement 7 secondes. Extrait du graphite, le graph\u00e8ne est un mat\u00e9riau compos\u00e9 d'une couche unique d'atomes de carbone, ce qui en fait un mat\u00e9riau en deux dimensions et lui donne des propri\u00e9t\u00e9s uniques. Dans les batteries, le graph\u00e8ne acc\u00e9l\u00e8re \u00e9norm\u00e9ment le transfert d'\u00e9nergie. Le mat\u00e9riau a aussi l'avantage d'\u00eatre flexible ce qui permet son utilisation dans des wearables. La technologie serait pr\u00eate pour le grand public d'ici deux ans seulement.\u00a0<\/strong><\/p>\n

$\"graphene\"$ <\/p>\n

Avez-vous d\u00e9j\u00e0 entendu parler du graph\u00e8ne ? Ce mat\u00e9riau 2D \u00e9tonnant a \u00e9t\u00e9 isol\u00e9 par des scientifiques de l'Universit\u00e9 de Manchester en 2004. Pour bien comprendre ce qu'est le graph\u00e8ne, il faut comprendre ce qu'est le graphite, le m\u00eame mat\u00e9riau que celui de la mine de votre crayon. Le graphite est en fait un empilement de couches de graph\u00e8ne. On peut l'extraire directement sur un morceau de graphite \u00e0 l'aide de ruban adh\u00e9sif. L'op\u00e9ration est renouvel\u00e9e une dizaine de fois sur la couche extraite jusqu'\u00e0 ce que l'on arrive \u00e0 une feuille d'une \u00e9paisseur d'un atome.<\/p>\n