Multifunctional surface-modified ultrathin graphene flakes for thermal and electrochemical energy storage application

被引：2

作者：

Padya, Balaji ^{[1
,2
]}

Ravikiran, N. ^{[1
]}

Kali, Ravi ^{[1
]}

Narasaiah, N. ^{[2
]}

Jain, P. K. ^{[1
]}

Rao, T. N. ^{[1
]}

机构：

[1] Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, India

[2] Natl Inst Technol NIT, Dept Met & Mat Engn, Warangal 506004, Andhra Pradesh, India

来源：

MATERIALS TODAY-PROCEEDINGS | 2020年 / 26卷

关键词：

Ultrathin graphene nanoflakes; Solution-phase exfoliation; Energy storage; Specific capacitance; Thermal conductivity; CONDUCTIVITY;

D O I：

10.1016/j.matpr.2019.03.234

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents the preparation of ultrathin graphene nanoflakes (UGF) from microwave-irradiated expanded graphite, and delaminated via solution-phase exfoliation for thermal and electrochemical energy storage application. The surface of the UGF were modified with a carbon rich layer (UGF-C) to minimize restacking and prone to oxidizer-etching to create pores to support electrolyte ion transport. UGF-C exhibited specific capacitance of 83F/g at current density of 0.25 A/g with 97% capacitance retention for 1000 cycles. Also, UGF incorporated xylitol based phase change materials enhanced thermal conductivity by 40.1%. (C) 2018 Elsevier Ltd.

引用

页码：52 / 57

页数：6