An ultralight and flexible sodium titanate nanowire aerogel with superior sodium storage

Cited 0 time in webofscience Cited 0 time in scopus
18 Viewed 2 Downloaded
Title
An ultralight and flexible sodium titanate nanowire aerogel with superior sodium storage
Author(s)
Ngoc Quang Tran; Thi Anh Le; Hyoyoung Lee
Publication Date
2018-08
Journal
Journal of Materials Chemistry A, v.6, no.36, pp.17495 - 17502
Publisher
ROYAL SOC CHEMISTRY
Abstract
An ultralight, conductive, and flexible 3D assembly of a metal oxide nanowire aerogel as an electrode for energy storage devices without additives and typically inconvenient flexible supported-substrates remains a challenge. Herein, we report a new 3D highly ordered layer-by-layer stacking sodium titanate@reduced graphene oxide core-shell (NTO@GCS) nanowire aerogel that has an ultra-high aspect ratio with a diameter of 30-50 nm and typical length up to 100 μm for a new class of convenient sodium-ion battery (SIB) anodes. The formation mechanism of the unique 3D NTO nanowire aerogel, the precursor of the NTO@GCS aerogel, was carefully proposed, demonstrating that the key challenge for this synthesis strategy was to form a stable and homogeneous ultrafine NTO nanotube gel suspension. In addition, for high performance sodium-ion storage, reduced graphene oxides (rGOs) were introduced into the NTO aerogel backbone. The critical role of the graphene structure between the NTO nanowires and rGO sheets in Na+ storage was systematically investigated. Compared to the 3D pristine NTO aerogel and 3D NTO nanowires on graphene sheet paper, the 3D interconnected NTO-GCS aerogel electrode facilitated rapid ion/electrolyte transportation, resulting in remarkably enhanced Na+ storage with a reversible capacity of 240 mA h g-1 at 0.2C and durable cycling stability after 4900 cycles at a rate of 2 and 4C with nearly 100% coulombic efficiency. © 2018 The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/5205
ISSN
2050-7488
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
c8ta06988c.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse