Mo based electrocatalyst with N, P co-doped mesoporous carbon as matrix for overall water splitting H2 production

被引:9
作者
An, Kaili [1 ]
Cui, Xiaoli [1 ]
Xu, Xinxin [1 ]
Wang, Yi [1 ]
机构
[1] Northeastern Univ, Dept Chem, Coll Sci, Shenyang 110819, Liaoning, Peoples R China
关键词
Mo based electrocatalyst; Heteroatom doping; Mesoporous carbon; HER; Overall water splitting; HYDROGEN EVOLUTION REACTION; MOLYBDENUM CARBIDE NANOPARTICLES; METAL-ORGANIC FRAMEWORK; HIGHLY EFFICIENT ELECTROCATALYSTS; REDUCED GRAPHENE OXIDE; ACTIVE ELECTROCATALYSTS; HIGH-PERFORMANCE; COMPOSITES; ELECTRODEPOSITION; NANOSPHERES;
D O I
10.1007/s10934-018-0703-3
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In an attempt to explore high efficient and low cost electrocatalyst in H-2 evolution reaction (HER), Mo2C nanoparticles with the size about 8 to 10nm are loaded on N, P co-doped mesoporous carbon matrix successfully with Na2MoO4 and carbonated beverage as precursors. The obtained electrocatalyst, Mo2C@NPC, possesses small dimension with the size about 200 to 300nm. Mo2C@NPC exhibits very excellent HER activity. It exhibits excellent electrocatalytic performance in basic condition, with overpotential 60mV and Tafel slope 63mVdec(-1) to get 10mAcm(-2) current density for H-2 evolution reaction (HER). To realize overall H2O splitting, Co was doped into Mo2C@NPC and a new electrocatalyst, named as Co/Mo2C@NPC was obtained. Co/Mo2C@NPC shows outstanding oxygen evolution reaction (OER) performance. Under same condition, to get current with density of 10mAcm(-2), Co/Mo2C@NPC merely need 360mV. The electrocatalyst also possesses excellent durability, after 1000 cycles as well as 10h long-term HER and OER tests, the current keeps stable. To achieve overall H2O splitting, an electrolyzer is constructed with Mo2C@NPC and Co/Mo2C@NPC as cathode and anode. To get a current with density 10mAcm(-2), it only needs a voltage of 1.60V. We expect Mo2C@NPC and Co/Mo2C@NPC electrocatalyst can act as a new material for overall H2O splitting.
引用
收藏
页码:1035 / 1042
页数:8
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