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Synthesis and electrochemical properties of nano – micro spherical β - Ni(OH)2 with super high charge – discharge speed / Xihong Yue in Industrial & engineering chemistry research, Vol. 51 N° 25 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8358-8365 Titre : Synthesis and electrochemical properties of nano – micro spherical β - Ni(OH)2 with super high charge – discharge speed Type de document : texte imprimé Auteurs : Xihong Yue, Auteur ; Junqing Pan, Auteur ; Yanzhi Sun, Auteur Année de publication : 2012 Article en page(s) : pp. 8358-8365 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Electrochemical  properties Résumé : A spherical β-Ni(OH)2 product with nano―micro structure was synthesized by a new controllable crystallization complexation precipitation method. The results show that the nano-micro spherical Ni(OH)2 possesses superior electrochemical properties due to its own nano―micro structure. Furthermore, the new samples of cobalt-doped, zinc-doped, and cobalt-zinc codoped Ni(OH)2 with nano-micro structure were also synthesized. The electrochemical properties of these four nano―micro spherical Ni(OH)2 samples were investigated by galvanostatic charge-discharge and cyclic voltammetric (CV) tests. The electrochemical experimental results indicate that the diffusivity of proton of the doped Ni(OH)2 samples is significantly improved as compared with the pure Ni(OH)2 sample. The Co—Zn codoped Ni(OH)2 sample offers a high discharge specific capacity of 257 mA h g―1 and a long life of more than 800 cycles at a super high charge—discharge speed of 50 C, and the charging time of the product is as short as to 1.2 min. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066763 [article] Synthesis and electrochemical properties of nano – micro spherical β - Ni(OH)2 with super high charge – discharge speed [texte imprimé] / Xihong Yue, Auteur ; Junqing Pan, Auteur ; Yanzhi Sun, Auteur . - 2012 . - pp. 8358-8365. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 25 (Juin 2012) . - pp. 8358-8365 Mots-clés : Electrochemical  properties Résumé : A spherical β-Ni(OH)2 product with nano―micro structure was synthesized by a new controllable crystallization complexation precipitation method. The results show that the nano-micro spherical Ni(OH)2 possesses superior electrochemical properties due to its own nano―micro structure. Furthermore, the new samples of cobalt-doped, zinc-doped, and cobalt-zinc codoped Ni(OH)2 with nano-micro structure were also synthesized. The electrochemical properties of these four nano―micro spherical Ni(OH)2 samples were investigated by galvanostatic charge-discharge and cyclic voltammetric (CV) tests. The electrochemical experimental results indicate that the diffusivity of proton of the doped Ni(OH)2 samples is significantly improved as compared with the pure Ni(OH)2 sample. The Co—Zn codoped Ni(OH)2 sample offers a high discharge specific capacity of 257 mA h g―1 and a long life of more than 800 cycles at a super high charge—discharge speed of 50 C, and the charging time of the product is as short as to 1.2 min. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26066763