Graphene-Wrapped Nanoporous Nickel-Cobalt Oxide Flakes for Electrochemical Supercapacitors

被引：11

作者：

Azhar, Alowasheeir ^{[1
,2
,3
,4
]}

Zakaria, Mohamed B. ^{[1
,2
,3
,5
]}

Lin, Jianjian ^{[1
]}

Chikyow, Toyohiro ^{[2
,3
]}

Martin, Darren J. ^{[6
,7
]}

Alghamdi, Yousef Gamaan ^{[8
]}

Alshehri, Abdulmohsen Ali ^{[8
]}

Bando, Yoshio ^{[2
,3
]}

Hossain, Md Shahriar A. ^{[6
,7
]}

Wu, Kevin C-W ^{[9
]}

Kumar, Nanjundan Ashok ^{[6
,7
]}

Yamauchi, Yusuke ^{[6
,7
,10
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[2] NIMS, Int Res Ctr Mat Nanoarchitechton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[3] NIMS, Mat Data & Integrated Syst MaDIS, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[4] Waseda Univ, Fac Sci & Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[5] Tanta Univ, Fac Sci, Dept Chem, Tanta 31527, Gharbeya, Egypt

[6] Univ Queensland, Sch Chem Engn, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia

[7] Univ Queensland, AIBN, Brisbane, Qld 4072, Australia

[8] King Abdulaziz Univ, Dept Chem, POB 80203, Jeddah 21589, Saudi Arabia

[9] Natl Taiwan Univ, Dept Chem Engn, 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan

[10] Kyung Hee Univ, Dept Plant & Environm New Resources, 1732 Deogyeong Daero, Yongin 446701, Gyeonggi Do, South Korea

来源：

CHEMISTRYSELECT | 2018年 / 3卷 / 29期

基金：

日本学术振兴会; 澳大利亚研究理事会;

关键词：

graphene; hybridization; mixed metal oxides; nanoporous materials; supercapacitors; COORDINATION POLYMERS; THERMAL-DECOMPOSITION; METAL-OXIDES; PERFORMANCE; ENERGY; NI; CO; NANOSTRUCTURES;

D O I：

10.1002/slct.201801174

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

A novel approach for hybridizing nanoporous NiCo oxide flakes with graphene sheets is reported. Positively charged cyano-bridged CoNi coordination polymer flakes (CoNi-CP) are mixed with graphene (G) suspension with negatively charged surface. Due to effective electrostatic interaction, both the materials are hybridized to form CoNi-CP/G composite. The as-prepared CoNi-CP/G composite is thermally treated in air, to remove the organic components without affecting the integrity of the parent G sheets. Through the thermal treatment, the CoNi-CP flakes wrapped into G sheets are converted to NiCo oxide, resulting in a new composite consisting of NiCo oxide flakes and G sheets. The NiCo-oxide/G composite shows the high specific capacitance (similar to 199 F g-1) at 5 mV/s, and features the good capacitance retention of similar to 68% at 100 mV(similar to 135 F g(-1)).

引用

页码：8505 / 8510

页数：6

共 25 条

[1]

Preparation of Tunable 3D Pillared Carbon Nanotube-Graphene Networks for High-Performance Capacitance [J].