Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

So far, most research pursue extremely high gravimetric capacity which, however, is not the only important metric for LIBs applications. [4] In areas of consumer electronics, microelectronics, military, aerospace, and even in electric vehicles, LIBs are needed not only to own light weight but compact size. [5,6] Thus, volumetric capacity should have been prioritized over gravimetric one, yet this crucial metric is often neglected. [7] Pitifully, the same situation also applies to the newly built sodium-ion batteries (SIBs), which is at the early stage of their development. [8] As for their potential application in the smart grid, the battery size is also decisive when being stored in the outdoors. [9] In comparison with the cathode, anode volumetric capacity is of particular importance because cathode materials usually offer much higher volumetric capacity than the state-of-the-art anode materials. [10] Till now, the strategies used to enhance volumetric capacity mainly focus on the material-level design, like the synthesis of Si@graphitic carbon nanowire array [7] or thick CNT-Si film, [11] which increased the tap density of electrode and thus improved the volumetric capacity up to 1500 mAh cm -3 . Another method is to composite the low-volumetric-capacity material with the ones owning high volume density. Taking advantage of high-volume density of SnO 2 (6.5 g cm -3 ), several nanocomposites were reported to deliver an enhanced volumetric capacity, like hollow structured SnO 2 @ Si nanospheres [12] and Si@SnO 2 core-shell particles. [13] Besides the materials level, the electrode-level performance is also crucial for volumetric capacity. [14] As we all know, a working electrode generally consists of active material and a certain amount of electrochemical inactive components, such as binder and conducting additive (hereafter denoted as CA), which usually account for ca. 20-30% of the total electrode mass (Table S1, Supporting Information). Although much effort has been attempted to increase the energy density via electrode components optimization, like the binder-free electrode, [15] the CA (Super P in most cases) seem to be indispensable since the electronic conductivity of most electrode candidates is inherently low. [16] Even worse, in most anodes, additional carbonaceous framework is highly needed for better rate capability and long-term stability. [17] It has been demonstrated that, interestingly, Li 4 Ti 5 O 12 electrode works well after removing To meet the ever-growing demand for advanced rechargeable batteries with light weight and compact size, much effort has been devoted to improving the volumetric capacity of electrodes. Herein, an effective strategy of polymorph engineering is proposed to boost the volumetric capacity of FeSe. Owing to the inherent metallic electronic conductivity of tetragonal-FeSe, a conductive additive-free electrode (hereafter denoted as CA-free) can be assembled with an enhanced sodium storage volumetric capacity of 1011 mAh cm −3 , significantly higher than semiconducting hex...

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“…f) Volumetric capacities in comparison with other reported metal selenides or sulfides in lithium batteries. [ 45–48 ]…”

Section: Resultsmentioning

confidence: 99%

“…d) Cycling performance and Coulombic efficiency at 0.5 C. e) Rate Capability. f) Volumetric capacities in comparisonwith other reported metal selenides or sulfides in lithium batteries [45][46][47][48].…”

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confidence: 99%

Polymorph Engineering for Boosted Volumetric Na‐Ion and Li‐Ion Storage

et al. 2021

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“…[120] Here, 2D MXene Ti 3 C 2 T x NSs provide a reliable substrate for the growth of 0D SnS NPs to efficiently suppress the volume expansion of SnS and prolong the cycle life in Li-ion batteries. Other loaded model based on 0D SnS NPs, such as 0D SnS NP/2D MoS 2 NS/N, P-codoped C heterostructures, [116] 0D SnS NP/ 2D MoS 2 @C heterostructures, [121] 0D SnS NP/N-doped C NS heterostructures, [122] 0D SnS NP/2D reduced graphene oxide (rGO) heterostructures, [123,124] and 0D SnS NP/C nanocomposites, [125] has also widely reported for diverse applications in recent years.…”

Section: Loaded Modelmentioning

confidence: 99%

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Zhu

et al. 2021

Small Science

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Tin-based binary chalcogenide Sn-X (X ¼ S, Se, Te) compounds have attracted extensive interest in the optical, optoelectronic, catalysis, and flexible systems due to their intriguing performances. [1][2][3][4][5][6][7] The Sn-X (X ¼ S, Se, Te) compounds are typically layered materials and usually have three crystalline phases: hexagonal, monoclinic, and orthorhombic; orthorhombic phase is denoted by chemical formula SnX, and hexagonal and monoclinic phases are labeled as SnX 2 . [8] Until now, SnSe and SnTe compounds have already achieved great progress in many fields, especially for thermoelectronics and ferroelectrics, [9][10][11][12] and many important reviews have been reported on SnSe and SnTe compounds due to their rapid development. [8,[13][14][15][16] For example, in 2020, Chen et al. [14] summarized a comprehensive overview of controlled synthesis, characterization, and thermoelectric performance in SnSe. In 2018, Shi et al. [8] summarized the growth, characterization, and applications (photovoltaics, supercapacitors, rechargeable batteries, phase-change memory devices, and topological insulator) of SnSe. In 2018, Li et al. [15] reviewed the development of SnS, SnSe, and SnTe, mainly focusing on the controllable tuning of the electron and phonon transport as well as the challenges for further optimization and practical applications. Among Sn-X (X ¼ S, Se, Te) compounds, tin monosulfide (SnS) as a typical black phosphorus analogue, has also received intensive scientific attention due to its unique properties, such as inexpensive, sustainable, suitable bandgap between Si (1.12 eV) and GaAs (1.43 eV), [17] high absorption coefficient (10 À4 cm À1 ), [18] strong mechanical properties, and anisotropic optoelectronic, [19][20][21] which are of great value in optoelectronics, catalysis, sensors, and nanomedicines. [7,[22][23][24][25][26][27] In addition, layered SnS with suitable spacing structures hold promising potentials in the field of lithium (Li)-ion batteries and sodium (Na)-ion batteries due to their relatively high electrical conductivity and theoretical capacity. [28][29][30][31][32] However, although popular SnS has achieved great progress in a variety of fields, few comprehensive reviews have hitherto focused on the field of SnS-based nanostructures and their fascinating applications.Inspired by important reviews on SnSe reported by Chen [14] and Li [8] in recent years, we comprehensively summarized the synthesis, characterization, and the latest progress of SnS-based nanostructures, as shown in Figure 1. First, the most commonly employed techniques (hydrothermal, vapor deposition, electrostatic assembly, etc.) for preparing SnS and SnS-based nanostructures are presented in detail with their recent progress. Furthermore, the fundamental properties (crystal structure, electronic band structure, optical property, and Raman spectroscopy) and diverse applications (batteries, solar cells, catalysis, optoelectronics, sensors, ferroelectrics, thermoelectrics, nonlinear properties, and biomedical applicatio...

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“…The sustainable development of human society rests heavily on the shoulders of green energy storage technology. − The development of lithium ion batteries (LIBs) is synonymous with the green energy revolution, but the spiraling cost of lithium is driving research into high-efficiency and low-cost alternatives. − One of the potential candidates is sodium ion batteries (SIBs), which use sodium ions instead of lithium ions as the charge carrier. − SIBs are attracting great attention because of the interesting characteristics of high working voltage, environmental friendliness, and high performance-to-price ratio due to the abundance and low cost of sodium. − Despite these advantages, SIBs still face many problems for practical application, such as low capacity, low initial Coulombic efficiency, and poor cycled stability. Though sodium has similar physicochemical properties to lithium, its ionic radius is greater than that of lithium ions, and therefore, most electrode materials in LIB applications are not suitable for SIBs.…”

Section: Introductionmentioning

confidence: 99%

Functionalized N-Doped Carbon Nanotube Arrays: Novel Binder-Free Anodes for Sodium-Ion Batteries

Xie

Zhang

Pan

et al. 2019

ACS Appl. Mater. Interfaces

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Boosting electrochemical sodium storage properties is achieved by utilizing functionalized N-doped carbon nanotube arrays (NCNAs) as anode materials. The NCNA anodes are first fabricated by self-polymerization of dopamine on cobalt hydroxide nanorod arrays as the template. The NCNAs with diameters of 100–120 nm are grown vertically to Ni foam, forming self-supported nanotube arrays. Such a structure has attractive advantages including large porosity and surface area, good electrical conductivity and mechanical strength. Consequently, the NCNAs are demonstrated to achieve excellent sodium storage performances with high capacity (335 mA h g–1 at 100 mA g–1), good rate capability (140 mA h g–1 at 2 A g–1), and superior capacity retention of 90.9% after 500 cycles. Especially, high performance is verified in the assembled full cells by using an NCNA anode and Na3V2(PO4)3/C cathode. The developed synthetic strategy provides an effective approach for the fabrication of advanced heteroatom-doped carbon-based electrodes for electrochemical energy storage.

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Strain Redistribution in Metal‐Sulfide‐Composite Anode for Enhancing Volumetric Lithium Storage

Cited by 7 publications

References 43 publications

Polymorph Engineering for Boosted Volumetric Na‐Ion and Li‐Ion Storage

Polymorph Engineering for Boosted Volumetric Na‐Ion and Li‐Ion Storage

Nanoengineering of Tin Monosulfide (SnS)‐Based Structures for Emerging Applications

Functionalized N-Doped Carbon Nanotube Arrays: Novel Binder-Free Anodes for Sodium-Ion Batteries

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