Journal Article10.1016/J.APCATB.2019.02.035
Few-layered MoS2 vertically aligned on 3D interconnected porous carbon nanosheets for hydrogen evolution
Dongjin Ko,Xuanzhen Jin,Xuanzhen Jin,Kwang-dong Seong,Bingyi Yan,Chai Hua,Jong Min Kim,Minsik Hwang,Juhyung Choi,Wang Zhang,Wang Zhang,Yuanzhe Piao +11 more
78
TL;DR: In this article, a few-layered MoS2/IPC composite was constructed on three-dimensional interconnected porous carbon nanosheets (IPC) to increase the exposure of the active site on the edges to improve its catalytic activity.
read more
Abstract: MoS2 has been considered as a non-precious alternative to platinum based electrocatalyst for electrochemical hydrogen evolution. Since most of the active site exists on the edges of MoS2, a material design that could increase the exposure of the edges could improve its catalytic activity. In this work, we prepared small sized and few-layered MoS2 that is vertically aligned on three-dimensional interconnected porous carbon nanosheets (IPC). Benefiting from exposure of MoS2 edges, MoS2/IPC composite exhibits a high catalytic activity (225 mA cm−2 at −250 mV vs. RHE, and Tafel slope of 38 mV dec−1) and maintains steady performance for several hours. Since the procedure to prepare MoS2/IPC composites is scalable and cost-effective, our method of preparing few-layered MoS2 on porous carbon shows great potential as a competitive electrocatalysts for HER.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Synergizing Hydrogen Spillover and Deprotonation by the Internal Polarization Field in a MoS2/NiPS3 Vertical Heterostructure for Boosted Water Electrolysis
Yaoda Liu,Ya Chen,Yahui Tian,Thangavel Sakthivel,Hang Liu,Shengwu Guo,Haibo Zeng,Zhengfei Dai +7 more
Abstract: Hydrogen spillover (HSo) has emerged to upgrade the hydrogen evolution reaction (HER) activity of Pt‐support electrocatalysts, but it is not applicable to the deprotonated oxygen evolution reaction (OER). Non‐precious catalysts that can perform well in both HSo and deprotonation (DeP) are extremely desirable for a sustainable hydrogen economy. Herein, an affordable MoS2/NiPS3 vertical heterostructure catalyst is presented to synergize HSo and DeP for efficient water electrolysis. The internal polarization field (IPF) is clarified as the driving force of HSo in HER electrocatalysis. The HSo from the MoS2 edge to NiPS3 can activate the NiPS3 basal plane to boost the HER activity of the MoS2/NiPS3 heterostructure (112 mV vs reversible hydrogen electrode (RHE) at 10 mA cm–2), while for OER, the IPF in the heterostructure can facilitate the hydroxyl diffusion and render MoS2‐to‐NiPS3/P‐to‐S dual‐pathways for DeP. As a result, the stacking of OER‐inactive MoS2 on the NiPS3 surface still brings intriguing OER enhancements. With them serving as electrode couples, the overall water splitting is attested stably with a cell voltage of 1.64 V at 10 mA cm−2. This research puts forward the IPF as the criterion in the rational design of HSo/DeP‐unified non‐precious catalysts for efficient water electrolysis.
215
Edge-oriented, high-percentage 1T′-phase MoS2 nanosheets stabilize Ti3C2 MXene for efficient electrocatalytic hydrogen evolution
TL;DR: In this paper, an efficient and stable MoS2-Ti3C2 MXene electrocatalyst was synthesized using a delicately designed one-step hydrothermal method.
151
Thin-layered MoS2 nanoflakes vertically grown on SnO2 nanotubes as highly effective room-temperature NO2 gas sensor.
TL;DR: In this article, a p-n heterojunction consisting of two-dimensional MoS2 nanoflakes vertically grown on one-dimensional SnO2 nanotubes (NTs) was fabricated via electrospinning and subsequent hydrothermal route.
142
Edge-exposed MoS2 nanospheres assembled with SnS2 nanosheet to boost NO2 gas sensing at room temperature.
Lujia Liu,Muhammad Ikram,Laifeng Ma,Xueyi Zhang,He Lv,Mohib Ullah,Mawaz Khan,Hai-Tao Yu,Keying Shi +8 more
TL;DR: The p-n heterojunction formed between the edge-exposed spherical MoS2 and the 3D flower-like SnS2 NSs has a synergistic effect, providing a highly active sites for the adsorption of NO2 gas, which greatly enhance the sensitivity of the sensor.
129
Recent advances in structural engineering of molybdenum disulfide for electrocatalytic hydrogen evolution reaction
TL;DR: In this article, a review of the structural engineering strategies for activating molybdenum disulfide (MoS2) in detail is presented, and theoretical analyses based on hydrogen adsorption free energy, d-band center theory, energy level matching are epitomized and used for revealing the HER mechanism.
121
References
Sustainable Hydrogen Production
TL;DR: Identifying and building a sustainable energy system are perhaps two of the most critical issues that today's society must address.
5.8K
Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts.
Thomas F. Jaramillo,Kristina Pilt Jørgensen,Jacob Lindner Bonde,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff +5 more
TL;DR: The active site for hydrogen evolution, a reaction catalyzed by precious metals, on nanoparticulate molybdenum disulfide (MoS2) is determined by atomically resolving the surface of this catalyst before measuring electrochemical activity in solution.
5.6K
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
4.7K
Alternative energy technologies
M. S. Dresselhaus,I. L. Thomas +1 more
TL;DR: Fossil fuels currently supply most of the world's energy needs, and however unacceptable their long-term consequences, the supplies are likely to remain adequate for the next few generations.
4.6K
Biomimetic Hydrogen Evolution: MoS2 Nanoparticles as Catalyst for Hydrogen Evolution
Berit Hinnemann,Poul Georg Moses,Jacob Lindner Bonde,Kristina Pilt Jørgensen,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff,Jens K. Nørskov +7 more
TL;DR: The ability of different metal surfaces and of the enzymes nitrogenase and hydrogenase to catalyze the hydrogen evolution reaction is analyzed and a necessary criterion for high catalytic activity is found: that the binding free energy of atomic hydrogen to the catalyst is close to zero.
3.7K