choibalsan efficient stone hammer crusher

high efficiency low noise small portable cobble stone hammer crusher mill with wheels line - best stone crusher plant solution from henan dewo

high efficiency low noise small portable cobble stone hammer crusher mill with wheels line - best stone crusher plant solution from henan dewo

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line. Dewo Machinery can provide high quality products, as well as customized optimized technical proposal and one station after- sales service.

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Portable Jaw crusher is equipped with a high performance jaw mobile crusher and vehiclemounted feeder and highintensity vibrating screen of short length light weight high mobility and strong adaptability which is of flexible combination and reduces transportation costs whether rough crushing fine crushing or sand making operations

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when mos2 meets feooh: a one-stone-two-birds heterostructure as a bifunctional electrocatalyst for efficient alkaline water splitting,applied catalysis b: environmental - x-mol

when mos2 meets feooh: a one-stone-two-birds heterostructure as a bifunctional electrocatalyst for efficient alkaline water splitting,applied catalysis b: environmental - x-mol

MoS2 has emerged as an attractive electrocatalyst for hydrogen evolution reaction (HER) although its performance still needs to be further enhanced, especially in alkaline solution due to inferior ability for water dissociation. Herein, we discover that coupling water-dissociation-active FeOOH with MoS2 grown on Ni3S2 nanowire arrays to achieve a core-shell [email protected]/FeOOH heterostructure can not only significantly accelerate the HER of MoS2, but also appreciably promote the OER activity of the catalyst. Systematic investigations on [email protected]/FeOOH and a series of delicately designed control catalysts reveal that such synergistically enhanced electrocatalytic performance for both OER and HER should be ascribed to the coupling effect and electronic modulation between FeOOH and MoS2. As a result, the prepared [email protected]/FeOOH exhibits small overpotentials of 95mV for HER and 234mV for OER at 10mAcm2. The alkaline electrolyzer using it as both anode and cathode only need a cell voltage of 1.57V to output a stable current density of 10mAcm2, enabling it as an efficient bifunctional electrocatalyst for alkaline overall water splitting. The present strategy opens up opportunities to develop new efficient electrocatalysts for diverse applications by coupling OER-active electron-modulating component with highly-active HER electrocatalyst or vice versa.

MoS 2MoS 2HERFeOOHNi 3 S 2MoS 2-Ni 3 S 2 @MoS 2 / FeOOHMoS 2HER OERNi 3 S 2 @MoS 2/ FeOOHOERHERFeOOHMoS 210mA cm -2Ni 3 S 2 @MoS 2 / FeOOHHER95mVOER234mV 1.57 V10 mA cm -2OERHER

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