Charge Transport Dynamics in Microwave Synthesized One-Dimensional Molybdenum Chalcogenides
Charge Transport Dynamics in Microwave Synthesized One-Dimensional Molybdenum Chalcogenides
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微波合成一维钼硫族化物中的电荷传输动力学
DOI：
10.1021/acs.iecr.1c02825
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发表时间：
2021
影响因子：
4.2
通讯作者：
Velázquez, Jesús M.
中科院分区：
文献类型：
--
作者：
Ortiz-Rodríguez, Jessica C.;Perryman, Joseph T.;Velázquez, Jesús M.
具有可调电子性质的一维钼硫族化合物的可缩放合成对于纳米级电子器件组件以及功能性能量转换催化剂的开发可能是至关重要的。在此，我们报告了通过快速微波辅助固态加热协议的直接合成一维钾插层钼硫属化合物在伪Chevrel相家庭[K2 Mo 6X6; X = S，Se，Te]。界面电容以及在水溶液质子还原过程中的电荷转移动力学都探索作为硫族元素组合物的函数。我们观察到一个显着的变化，这些结构的各向异性成核的硫族元素的大小增加和电负性从硫碲减少，前者显着鼓励成核的定义明确的纳米材料相比，后者。随着硫族元素电负性的增加（Te < Se < S），这些各向异性结构的比电容从2.25 F g-1增加到10.28 F g-1.质子还原的电荷转移动力学遵循类似的硫属元素依赖性，K2 Mo 6S 6在−0.6 V vs RHE下的最小电荷转移电阻为1.16 Ω，而K2 Mo 6 Te 6在相同电位下为3.7 Ω。本文讨论的结果突出了有趣的成分依赖性的性能，可以指导未来的选择和发展钼硫属化物材料。
Scalable synthesis of one-dimensional molybdenum chalcogenides with tunable electronic properties may be critical for the development of nanoscale electronic device components as well as functional energy-conversion catalysts. Herein, we report the direct synthesis of one-dimensional potassium-intercalated molybdenum chalcogenides in the pseudo-Chevrel–Phase family [K2Mo6X6; X = S, Se, Te] through a rapid microwave-assisted solid-state heating protocol. Interfacial capacitance as well as charge transfer dynamics during aqueous proton reduction are both explored as a function of chalcogen composition. We observe a significant change in the anisotropic nucleation of these structures as the chalcogen increases in size and decreases in electronegativity from sulfur to tellurium, with the former dramatically encouraging nucleation of well-defined nanomaterials in comparison to the latter. These anisotropic structures exhibit increased specific capacitance from 2.25 F g–1to 10.28 F g–1as the electronegativity of the chalcogen increases (Te < Se < S). Charge transfer kinetics for proton reduction follow a similar chalcogen-dependence, with the smallest charge transfer resistance being 1.16 Ω for K2Mo6S6at −0.6 V vs RHE, compared to 3.7 Ω for K2Mo6Te6at the same potential. Results discussed herein highlight interesting composition-dependent properties that could guide the future selection and development of molybdenum chalcogenide materials.
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影响因子：
15
作者：
Wang, Cheng;Liu, Demin;Lin, Wenbin
通讯作者：
Lin, Wenbin
二次锂电池用Mo6 Se6固态电极
影响因子：
3.9
作者：
J. Tarascon
通讯作者：
J. Tarascon
影响因子：
1.9
作者：
M. Soriaga;J. Baricuatro;Kyle D. Cummins;Youn Geun Kim;Fadl H. Saadi;G. Sun;Charles C. L. McCrory;James R. McKone;J. Velázquez;Ivonne M. Ferrer;Azhar I. Carim;Alnald C. Javier;Brian Chmielowiec;D. Lacy;J. Gregoire;J. Sanabria-Chinchilla;X. Amashukeli;William J. Royea;B. Brunschwig;J. Hemminger;N. Lewis;J. Stickney
通讯作者：
M. Soriaga;J. Baricuatro;Kyle D. Cummins;Youn Geun Kim;Fadl H. Saadi;G. Sun;Charles C. L. McCrory;James R. McKone;J. Velázquez;Ivonne M. Ferrer;Azhar I. Carim;Alnald C. Javier;Brian Chmielowiec;D. Lacy;J. Gregoire;J. Sanabria-Chinchilla;X. Amashukeli;William J. Royea;B. Brunschwig;J. Hemminger;N. Lewis;J. Stickney
影响因子：
2.8
作者：
P. Hor;R. Meng;C. Chu;J. Tarascon;Maw‐Kuen Wu
通讯作者：
P. Hor;R. Meng;C. Chu;J. Tarascon;Maw‐Kuen Wu
影响因子：
2.1
作者：
J. Tarascon;F. Disalvo;J. Waszczak
通讯作者：
J. Tarascon;F. Disalvo;J. Waszczak