Efficient Activation of Li<sub>2</sub>S by Transition Metal Phosphides Nanoparticles for Highly Stable Lithium–Sulfur Batteries

Yuan, Huadong; Chen, Xianlang; Zhou, Guangmin; Zhang, Wenkui; Luo, Jianmin; Huang, Hui; Gan, Yongping; Liang, Chao; Xia, Yang; Zhang, Jun; Wang, Jianguo

doi:10.1021/acsenergylett.7b00465

Cited by 271 publications

(157 citation statements)

References 76 publications

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“…Obviously, the improved specific capacity of 863 mAh g −1 at 0.8 mA cm −2 was achieved on MoP–CNT‐S electrode because the MoP nanoparticles catalyzed the transformation of dissolved LPS into solid Li 2 S/Li 2 S 2, and more LPS tended to be electrochemically active on the MoP surface. In comparison, Tao and co‐workers compared the adsorption energy and dissociated energy for Li 2 S on different TMPs surfaces using theoretical calculations . Figure d demonstrated the adsorption and decomposition mechanism on the surface of various TMPs.…”

Section: Applicationsmentioning

confidence: 99%

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Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Yang

Dong

Jiao

2019

Advanced Energy Materials

377

220

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The exploitation of cheap and efficient electrocatalysts is the key to make energy‐related electrocatalytic techniques commercially viable. In recent years, transition metal phosphides (TMPs) electrocatalysts have gained a great deal of attention owing to their multifunctional active sites, tunable structure, and composition, as well as unique physicochemical properties. This review summarizes the up‐to‐date progress on TMPs in energy‐related electrocatalysis from diversified synthetic methods, ingenious‐modulated strategies, and novel applications. In order to set forth theory–structure–performance relationships upon TMPs, the corresponding reaction mechanisms, electrocatalytsts' structure/composition designs and desired electrochemical performance are jointly discussed, along with demonstrating their practical electrocatalytic applications in overall water splitting, metal–air batteries, lithium–sulfur batteries, etc. In the end, some underpinning issues and research orientations of TMPs toward efficient energy‐related electrocatalysis are briefly proposed.

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Section: Applicationsmentioning

confidence: 99%

“…d) Adsorption and decomposition mechanism on the surface of various TMPs. e) Cycling performance and corresponding coulombic efficiency of TMPs@NPC/S cathodes at 0.2 C. Reproduced with permission . Copyright 2017, American Chemical Society.…”

Section: Applicationsmentioning

confidence: 99%

Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Yang

Dong

Jiao

2019

Advanced Energy Materials

377

220

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“…(2) Since elementary sulfur have disadvantages of low electronic and ionic conductivity, a large activation polarization is required for utilization of active materials . The utilization of the discharged product of Li 2 S or short‐chain polysulfide is also very low due to the electronically and ionically insulating natures . That is, the conversion of insoluble short‐chain Li 2 S 2 and Li 2 S into soluble long‐chain polysulfides is very challenging in organic electrolytes during charging because of the energy required for nucleation of the solid‐state phase and the sluggish solid‐state diffusion in the bulk.…”

Section: Fundamentals and Electrochemistry Of Aqueous Li–s Batteriesmentioning

confidence: 99%

Materials and Device Constructions for Aqueous Lithium–Sulfur Batteries

Yun

Yeon

Park

et al. 2018

Adv Funct Materials

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Lithium-sulfur (Li-S) batteries have advantages in terms of their high specific capacity, natural abundance, and low cost of elementary sulfur on the basis of the multielectron conversion reactions in organic electrolytes. Despite their potential as next-generation batteries, Li-S batteries are still limited by critical challenges such as redox shuttling and the parasitic reaction of polysulfides arising from intrinsic electrochemistry as well as a low electrical conductivity of sulfur and the insolubility of Li 2 S associated with the materials' properties. The unique redox electrochemistry of sulfur in aqueous electrolytes, which is completely different from that in organic electrolytes, provides a rational strategy to resolve the aforementioned problems by the design of new materials and cell constructions. Furthermore, this system enables to achieve significant benefits of aqueous systems in terms of safety, chemical tractability, environmental friendliness, low cost, and high ionic conductivity. Here, at first materials and cell constructions for aqueous Li-S batteries are reviewed, covering the fundamental electrochemistry of sulfur in aqueous electrolytes, the advances in the host materials and aqueous electrolytes, and the cell design of flow-type aqueous Li-S batteries. Additionally, the current impediments and perspectives into the future direction of this field are provided.of 1675 mAh g −1 , natural abundance, and low cost of sulfur cathode. [1] On a basis of the multielectron conversion reaction in organic electrolytes, Li-S batteries can achieve the theoretical energy density of 2567 Wh kg −1 , which is by far higher than 387 Wh kg −1 of LIBs using graphite/ LiCoO 2 . [2] Despite these advantages, Li-S batteries still face some challenges associated with intrinsic redox electrochemistry such as redox shuttling and parasitic reaction of polysulfides as well as materials' properties such as low electrical conductivity (10 −30 S cm −1 ) of sulfur and insolubility of Li 2 S, [3] which is discussed in detail in Section 2. In order to overcome these bottlenecks, most researches mainly focused on developing new host and electrolyte materials, interlayers, separators, additives, and other issues related to organic-based systems. [4] A "gamechanging strategy" is to design materials and cell constructions in different electrolyte solutions, so-called aqueous electrolytes. Along with environmental benign feature of aqueous electrolyte, aqueous rechargeable battery system has significant advantages over organic counterparts in terms of the avoidance of the safety issue of flammable organic electrolytes, the rigorous manufacturing conditions, and the high costs of the electrolyte solvent and salts. However, the energy density of aqueous rechargeable battery system is lowered due to the limited potential window of the aqueous electrolyte by the water decomposition at 1.23 V versus Standard Hydrogen Electrode (SHE), which is much narrower than that of the organic electrolyte. Thermodynamic stability of aqueous ele...

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“…[1,2] Due to the high theoretical capacity of 3860 mAh g −1 with the lowest oxidation-reduction potential (−3.04 V vs the standard hydrogen electrode), [3,4] lithium metal is considered the most promising anode material If we consider using magnetic field as the external source to obtain the uniform Li + distribution during plating/stripping process with minimum interruption for the whole cell system, the dendrites should be suppressed. [1,2] Due to the high theoretical capacity of 3860 mAh g −1 with the lowest oxidation-reduction potential (−3.04 V vs the standard hydrogen electrode), [3,4] lithium metal is considered the most promising anode material If we consider using magnetic field as the external source to obtain the uniform Li + distribution during plating/stripping process with minimum interruption for the whole cell system, the dendrites should be suppressed.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

Shen

Wang

et al. 2019

Advanced Energy Materials

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for the battery technologies. However, the main impediment for the practical application of lithium metal batteries is the lithium dendrite formation. [5] It not only penetrates the separator to induce the short circuit of the batteries, [6] but also generates high surface area in the anode to accelerate the unwanted side reactions between electrolytes and lithium metal, resulting in the electrolyte depletion and the subsequent battery failure. [7][8][9] Up to now, many strategies targeting lithium dendrites suppression rely on the "internal strategies," i.e., the modification or optimization of the components inside the cells. Those strategies include electrolyte optimization, artificial solid electrolyte interphase (SEI) design, and synthesis of 3D current collector. [1] Electrolyte additives such as LiF, [10] LiNO 3 , [11] and Li 2 S x [12] were chosen to form stable SEI on the surface of Li anode to suppress the dendrite growth. [13] For creating artificial SEI layer on the anode, gas treatment [14] (N 2 , O 2 , CO 2 , or SO 2 ), liquid treatment (Li 3 PO 4[15] and Cu 3 N/styrene−butadiene rubber [16] ), and physical deposition of nanofilm (Al 2 O 3 , [17] carbon, [18] and organic polymer [19] ) are the three typical methods by accessing the internal interface of the battery. The rational design of 3D current collectors also helps to inhibit dendritic growth. [20] One type of 3D current collectors is lithiophilic matrix such as lithiophilic-lithiophobic gradient interfacial layer, [21] N-doped graphene, [22] and metal−organic framework, [23] which redistributes Li-ions to the anode surface through chemical bonding interactions to achieve uniform lithium deposition. The other type is conductive matrix including porous carbon, [7] graphene matrix, [24] 3D-ordered macroporous Cu, [25] and fibrous metal felt [26] that reduces dendritic growth by reducing the current density with a large surface area. [27,28] Although these "internal strategies" could effectively suppress the dendrite formation, cell stability becomes a concern due to the change of the cell environment such as the use of additives and the modification of the electrode.Introducing an "external strategy," by using external magnetic field to rearrange the Li + concentration on the anode surface, could achieve a uniform lithium deposition. The latest study shows that the growth of Li dendrites stems from the nonuniform Li + concentration on the electrode surface. [29] Lithium metal is the most attractive anode material due to its extremely high specific capacity, minimum potential, and low density. However, uncontrollable growth of lithium dendrite results in severe safety and cycling stability concerns, which hinders the application in next generation secondary batteries. In this paper, a new and facile method imposing a magnetic field to lithium metal anodes is proposed. That is, the lithium ions suffering Lorentz force due to the electromagnetic fields are put into spiral motion causing magnetohydrodynamics (MHD) effect. This MHD effect can effecti...

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Efficient Activation of Li₂S by Transition Metal Phosphides Nanoparticles for Highly Stable Lithium–Sulfur Batteries

Cited by 271 publications

References 76 publications

Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Materials and Device Constructions for Aqueous Lithium–Sulfur Batteries

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

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Efficient Activation of Li2S by Transition Metal Phosphides Nanoparticles for Highly Stable Lithium–Sulfur Batteries

Cited by 271 publications

References 76 publications

Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Multifunctional Transition Metal‐Based Phosphides in Energy‐Related Electrocatalysis

Materials and Device Constructions for Aqueous Lithium–Sulfur Batteries

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

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Efficient Activation of Li₂S by Transition Metal Phosphides Nanoparticles for Highly Stable Lithium–Sulfur Batteries