Amorphous MoSx-Coated TiO2 Nanotube Arrays for Enhanced Electrocatalytic Hydrogen Evolution Reaction

Liu, Zhongqing; Zhang, Xiaoming; Wang, Bin; Xia, Min; Gao, Shiyuan; Liu, Xinyu; Zavabeti, Ali; Ou, Jian Zhen; Kalantar‐zadeh, Kourosh; Wang, Yichao

doi:10.1021/acs.jpcc.8b01678

Cited by 74 publications

(43 citation statements)

References 63 publications

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“…Meanwhile, the nanostructured materials could offer a short diffusion path and quick reaction time ,. Various morphologies of materials including nanowires, nanosheets, nanoporous and nanotubes have been explored in the previous study . Among these structures, one‐dimensional (1D) hollow nanotubes have received significant attention, as it possesses a high specific surface area and a high length/diameter (L/D) ratio.…”

Section: Introductionmentioning

confidence: 99%

ZnS Nanotubes/Carbon Cloth as a Reversible and High‐Capacity Anode Material for Lithium‐Ion Batteries

et al. 2018

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Metal sulfides have been considered as one of the most promising class of anode materials for lithium‐ion batteries. However, large volume change and low intrinsic electrical conductivity significantly restrict the performance. Herein, flexible electrode materials comprising ZnS nanotubes/carbon cloth are prepared by combined solvothermal and ion‐exchange sulfidation technique. The ZnS nanotube array/carbon cloth electrode is assessed for application in lithium‐ion batteries and remarkable improvement towards reversible capacity was observed. A notable capacity of 1053 mAh g−1 at 0.2 C and a maintained reversible capacity of 608 mAh g−1 after 100 cycles are observed, which are both comparable to similar materials in previously published reports. The ZnS nanotubes with small dimension and uniform dispersion grown directly on carbon cloth can effectively shorten the path of the lithium‐ions, facilitating the charge transfer of the electrode. The carbon cloth and the three‐dimensional (3D) structured carbon fiber exhibit a large surface area and can thus efficiently reduce the volume change during the discharge/charge cycles.

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Section: Introductionmentioning

confidence: 99%

ZnS Nanotubes/Carbon Cloth as a Reversible and High‐Capacity Anode Material for Lithium‐Ion Batteries

et al. 2018

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“…Another approach that has produced promising results is to deposit molybdenum sulfide onto something highly conducting and/or with high surface area, like nanotubes, nanowires, reduced graphene oxide etc. [93][94][95][96]. Depending on the methods used, one often ends up with amorphous MoS x .…”

Section: Molybdenum Sulfide Mosmentioning

confidence: 99%

Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers

Sun

Fleischer

et al. 2018

Catalysts

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In order to adopt water electrolyzers as a main hydrogen production system, it is critical to develop inexpensive and earth-abundant catalysts. Currently, both half-reactions in water splitting depend heavily on noble metal catalysts. This review discusses the proton exchange membrane (PEM) water electrolysis (WE) and the progress in replacing the noble-metal catalysts with earth-abundant ones. The efforts within this field for the discovery of efficient and stable earth-abundant catalysts (EACs) have increased exponentially the last few years. The development of EACs for the oxygen evolution reaction (OER) in acidic media is particularly important, as the only stable and efficient catalysts until now are noble-metal oxides, such as IrOx and RuOx. On the hydrogen evolution reaction (HER) side, there is significant progress on EACs under acidic conditions, but there are very few reports of these EACs employed in full PEM WE cells. These two main issues are reviewed, and we conclude with prospects for innovation in EACs for the OER in acidic environments, as well as with a critical assessment of the few full PEM WE cells assembled with EACs.

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Section: Molybdenum Sulfide Mos2mentioning

confidence: 99%

Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers

Sun¹,

Xu²,

Fleischer³

et al. 2018

Preprint

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Water electrolysis provides efficient and cost-effective production of hydrogen from renewable energy. Currently, the oxidation half-cell reaction relies on noble-metal catalysts, impeding widespread application. In order to adopt water electrolyzers as the main hydrogen production systems, it is critical to develop inexpensive and earth-abundant catalysts. This review discusses the proton exchange membrane (PEM) water electrolysis (WE) and the progress in replacing the noble-metal catalysts with earth-abundant ones. Researchers within this field are aiming to improve the efficiency and stability of earth-abundant catalysts (EACs), as well as to discover new ones. The latter is particularly important for the oxygen evolution reaction (OER) under acidic media, where the only stable and efficient catalysts are noble-metal oxides, such as IrOx and RuOx. On the other hand, there is significant progress on EACs for the hydrogen evolution reaction (HER) in acidic conditions, but how many of these EACs have been used in PEM WEs and tested under realistic conditions? What is the current status on the development of EACs for the OER? These are the two main questions this review addresses.

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Amorphous MoS_x-Coated TiO₂ Nanotube Arrays for Enhanced Electrocatalytic Hydrogen Evolution Reaction

Cited by 74 publications

References 63 publications

ZnS Nanotubes/Carbon Cloth as a Reversible and High‐Capacity Anode Material for Lithium‐Ion Batteries

ZnS Nanotubes/Carbon Cloth as a Reversible and High‐Capacity Anode Material for Lithium‐Ion Batteries

Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers

Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers

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