Heteroatom enhanced sodium ion capacity and rate capability in a hydrogel derived carbon give record performance in a hybrid ion capacitor

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1016/j.nanoen.2016.03.014
Auteur	Rechercher : Ding, Jia; Rechercher : Li, Zhi; Rechercher : Cui, Kai¹; Rechercher : Boyer, Steven; Rechercher : Karpuzov, Dimitre; Rechercher : Mitlin, David
Affiliation	Conseil national de recherches du Canada. Institut national de nanotechnologie
Format	Texte, Article
Sujet	Sodium ion battery; NIB; SIB; Supercapacitor; Ultracapacitor; Grapheme; Lithium ion battery; LIB; Anode; Cathode
Résumé	We employed a polypyrrole hydrogel precursor to create a carbon framework that possesses both huge heteroatom content (13 wt% nitrogen and 11 wt% oxygen) and high surface area (945 m² g⁻¹) that is equally divided between micropores and mesopores. A sodium ion capacitor (NIC, HIC) electrode fabricated from this N and O Functionalized Carbon (NOFC) has tremendous reversible capacity and rate capability, e.g. 437 mA h g⁻¹ at 100 mA g⁻¹, and 185 mA h g⁻¹ at 1600 mA g⁻¹. This is among the most favorable reported, and is due to copious nanoporosity that enables fast ion sorption at the many N and O moieties and graphene defects. The NOFC imbues a NIC device with energy–power characteristics that are not only state-of-the-art for Na hybrids, but also rival Li systems: Ragone chart placement is 111 W h kg⁻¹ and 38 W h kg⁻¹ at 67 W kg⁻¹ and 14,550 W kg⁻¹, respectively, with 90% capacity retention at over 5000 charge/discharge cycles.
Date de publication	2016-03-29
Maison d’édition	Elsevier
Dans	Nano Energy 23 : 129–137.
Langue	anglais
Publications évaluées par des pairs	Oui
Identificateur	S2211285516300374
Numéro NPARC	23000100
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	44c78ece-a307-4bf5-bb34-5ae784b3f2a5
Enregistrement créé	2016-06-02
Enregistrement modifié	2020-03-16

Date de modification :: 2024-07-27