Bimetallic NiCo Functional Graphene: An Efficient Catalyst for Hydrogen-Storage Properties of MgH2

被引：40

作者：

Wang, Ying ^{[1
]}

Liu, Guang ^{[1
]}

An, Cuihua ^{[1
]}

Li, Li ^{[1
]}

Qiu, Fangyuan ^{[1
]}

Wang, Yijing ^{[1
]}

Jiao, Lifang ^{[1
]}

Yuan, Huatang ^{[1
]}

机构：

[1] Nankai Univ, Tianjin Key Lab Met & Mol Based Mat Chem, Collaborat Innovat Ctr Chem & Chem Engn Tianjin, Inst New Energy Mat Chem,Key Lab Adv Energy Mat C, Tianjin 30007, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2014年 / 9卷 / 09期

关键词：

graphene; hydrogen storage; magnesium; nanoparticles; supported catalysts; CORE-SHELL NANOPARTICLES; MAGNESIUM HYDRIDE; AMMONIA BORANE; SORPTION; CARBON; DEHYDROGENATION; FE; PERFORMANCE; METALS; SYSTEM;

D O I：

10.1002/asia.201402245

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bimetallic NiCo functional graphene (NiCo/rGO) was synthesized by a facile one-pot method. During the coreduction process, the as-synthesized ultrafine NiCo nanoparticles (NPs), with a typical size of 4-6 nm, were uniformly anchored onto the surface of reduced graphene oxide (rGO). The NiCo bimetal-supported graphene was found to be more efficient than their single metals. Synergetic catalysis of NiCo NPs and rGO was confirmed, which can significantly improve the hydrogen-storage properties of MgH2. The apparent activation energy (E-a) of the MgH2-NiCo/rGO sample decreases to 105 kJ mol(-1), which is 40.7% lower than that of pure MgH2. More importantly, the as-prepared MgH2-NiCo/rGO sample can absorb 5.5 and 6.1 wt% hydrogen within 100 and 350 s, respectively, at 300 degrees C under 0.9 MPa H-2 pressure. Further cyclic kinetics investigation indicates that MgH2-NiCo/rGO nanocomposites have excellent cycle stability.

引用

页码：2576 / 2583

页数：8

共 38 条

[1] Hydrogen in magnesium: new perspectives toward functional stores [J].

Aguey-Zinsou, Kondo-Francois ;

Ares-Fernandez, Jose-Ramon .

ENERGY & ENVIRONMENTAL SCIENCE, 2010, 3 (05) :526-543

[2] Synergy of elemental Fe and Ti promoting low temperature hydrogen sorption cycling of magnesium [J].

Amirkhiz, Babak Shalchi ;

Zahiri, Beniamin ;

Kalisvaart, Peter ;

Mitlin, David .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (11) :6711-6722

[3] In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2 [J].

An, Cuihua ;

Liu, Guang ;

Li, Li ;

Wang, Ying ;

Chen, Chengcheng ;

Wang, Yijing ;

Jiao, Lifang ;

Yuan, Huatang .

NANOSCALE, 2014, 6 (06) :3223-3230

[4] Magnesium nanocrystal-polymer composites: A new platform for designer hydrogen storage materials [J].

Bardhan, Rizia ;

Ruminski, Anne M. ;

Brand, Alyssa ;

Urban, Jeffrey J. .

ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (12) :4882-4895

[5] Hydrogen sorption performance of MgH2 doped with mesoporous nickel- and cobalt-based oxides [J].

Cabo, Moises ;

Garroni, Sebastiano ;

Pellicer, Eva ;

Milanese, Chiara ;

Girella, Alessandro ;

Marini, Amedeo ;

Rossinyol, Emma ;

Surinach, Santiago ;

Dolors Baro, Maria .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (09) :5400-5410

[6] Hydrogen Storage Properties of Ca(BH4)2-LiNH2 System [J].

Chu, Hailiang ;

Xiong, Zhitao ;

Wu, Guotao ;

Guo, Jianping ;

Zheng, Xueli ;

He, Teng ;

Wu, Chengzhang ;

Chen, Ping .

CHEMISTRY-AN ASIAN JOURNAL, 2010, 5 (07) :1594-1599

[7] Catalytic effects of subsurface carbon in the chemisorption of hydrogen on a Mg(0001) surface: an ab-initio study [J].

Du, AJ ;

Smith, SC ;

Yao, XD ;

Lu, GQ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (04) :1814-1819

[8] Catalytic effect of nanoparticle 3d-transition metals on hydrogen storage properties in magnesium hydride MgH2 prepared by mechanical milling [J].

Hanada, N ;

Ichikawa, T ;

Fujii, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (15) :7188-7194

[9]

Jeon KJ, 2011, NAT MATER, V10, P286, DOI [10.1038/nmat2978, 10.1038/NMAT2978]

[10] Meeting the clean energy demand: Nanostructure architectures for solar energy conversion [J].

Kamat, Prashant V. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (07) :2834-2860

← 1 2 3 4 →