Carbon Nanotubes Coated Paper as Current Collectors for Secondary Li-ion Batteries

Nanotechnology Reviews

Podila Ramakrishna¹  Creager Stephen E.¹  Rao Apparao M.¹  Ventrapragada Lakshman K.² 

[1] Clemson Nanomaterials Institute, Clemson, SC, 29634, ClemsonUnited States of America;Department of Chemistry, Clemson University, Clemson, SC 29634, United States of America;

关键词: lifepo4;    carbon nanotubes;    paper;    li-ion batteries;   

DOI  :  10.1515/ntrev-2019-0002

来源: DOAJ

【 摘 要 】

We developed a surfactant-free spray coating process to coat commercial cellulose-based paper with carbon nanotubes (CNTs) and prepared paper-CNTs current collectors for Li-ion batteries (LIBs). The paper-CNTs were used as current collectors for replacing conventional aluminum foil. Li-ion batteries assembled using paper-CNTs were coated with LiFePO4 as the active material and used as cathodes with Li as the anode, and the assembled LIBs showed a high energy density of 460 Wh kg−1 at a power density of 250 W kg−1. These electrodes were stable even at a current density as high as 600 mA g−1, and showed cycling stability for ~450 cycles at 150 mAh g−1. Furthermore, paper-CNTs based electrodes showed ~17% improvement in areal capacity compared to commercial aluminum-based electrodes suggesting that paper-CNTs can readily displace Al foils as current collectors.

【 授权许可】

Unknown