SnS<sub>2</sub> Nanosheets Coating on Nanohollow Cubic CoS<sub>2</sub>/C for Ultralong Life and High Rate Capability Half/Full Sodium‐Ion Batteries

Shi, Ludi; Li, Dong-Zhi; Yao, Pingping; Yu, Jiali; Li, Cuihua; Yang, Bo; Zhu, Caizhen; Xu, Jian

doi:10.1002/smll.201802716

Cited by 96 publications

(66 citation statements)

References 60 publications

(74 reference statements)

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“…The faradic and nonfaradic (pseudocapacitive) proportions contributing Li‐storage at different scan rates were assessed by equations as follows. [ 60–62 ] In Equation (1), i represents the (peak) current and ν represents the scan rate. The value of b in Equation (2) is calculated by the slope of log( i )–log( v ).…”

Section: Resultsmentioning

confidence: 99%

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Guo

Zhou

et al. 2020

Adv Funct Materials

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The lack of precise control of particle sizes is the critical challenge in the assembly of 3D interconnected transition-metal oxide (TMO) for newlyemerging energy conversion devices. A self-embedded templating strategy for preparing the TMO@carbon quasiaerogels (TMO@C-QAs) is proposed. By mimicking an aerogel structure at a microscale, the TMO@C-QA successfully assembles size-controllable TMO nanoparticles into 3D interconnected structure with surface-enriched carbon species. The morphological evolutions of intermediates verify that the self-embedded Ostwald ripening templating approach is responsible for the dualchannel TMO@C-QA formation. The general self-embedded templating strategy is easily extended to prepare various TMO@C-QAs, including the Co 3 O 4 @C-QA, Mn 3 O 4 @C-QA, Fe 2 O 3 @C-QA, and NiO@C-QA. Benefiting from the unparalleled 3D interconnected network of aerogels, the Co 3 O 4 @C-QA displays superior bifunctional catalytic activities for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), as well as high specific capacity and excellent long-term stability for lithium-ion battery (LIB) anode. A proof-of-concept battery-powered electrolyzer with Co 3 O 4 @C-QA cathode and anode powered by a full LIB with Co 3 O 4 @C-QA anode is presented. The battery-powered electrolyzer made of the state-ofthe-art TMOs can exhibit great competitive advantages due to its supreme multifunctional energy conversion performance for future water electrolysis.

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Section: Resultsmentioning

confidence: 99%

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Guo

Zhou

et al. 2020

Adv Funct Materials

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“…Thanks to their tunable compositions and diverse structures, metal-organic frameworks (MOFs) have been widely utilized as precursors to prepare carbon-decorated MMSs. [45,[83][84][85][86][87][88] Specifically, the porous configuration and nanosized subunits of MOF-derived MMSs can provide high surface area and reduced diffusion length for Na + ions/electrons. And the pyrolysis of the heteroatom-containing ligand could generate heteroatomdoped carbon, guaranteeing high electronic conductivity of the hybrids.…”

Section: Mmss With Carbonaceous Materials For Sibsmentioning

confidence: 99%

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

2020

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By virtue of the advantageous features of diverse material species, compositions, crystalline phases, valence states, architectures, and controllable nanostructures/ morphologies, metal sulfides manifest high electrochemical activity for sodium storage. Numerous metal sulfides have been applied for sodium storage and show promising electrochemical results. [36-38] Metal sulfides usually have higher electronic conductivity compared to metal oxide counterparts. [39,40] And the bond energy of M-S in metal sulfides is weaker than the M-O in metal oxides, leading to faster kinetics during the conversion reactions. [41] Among the metal sulfides based electrode materials, mixed metal sulfides (MMSs) with mixture phases of different metal sulfides demonstrate richer redox reactions and higher electronic conductivity compared to the single-component metal sulfides, showing intrinsic advantages for sodium storage. [39] For MMSs, it is verified that the phase boundaries at the heterointerfaces can provide abundant lattice mismatches, distortions, and defects, which have great influences on the charge carrier transport behavior by regulating the reaction kinetics and long-range disorder. [42] Meanwhile, driven by the internal electric field at the heterointerfaces due to the dissimilar coupling components with different bandgaps, the interfacial reaction kinetics and electron/ion transport can be greatly promoted. [43] Additionally, owing to the synergetic effect of different components, the uniformly dispersed intermediate nanocrystals during electrochemical reactions can avoid the aggregation of generated metal nanoparticles thus obtaining good cyclability. [44] And the diverse redox potentials and out-of-step electrochemical reactions of different components would mitigate the strain during sodium uptake/extraction processes. [45] Therefore, it is inferred that MMSs with suitable compositions could achieve excellent electrochemical performance. In general, the sodium storage mechanisms of metal sulfides are attributed to the combination of insertion, conversion, and/or alloying reactions. [37,46,47] During these reactions, the electrodes inevitably undergo severe volume change, which causes the collapse and pulverization of the structures and fading of capacity during repeated cycling. To address these issues, nanostructure engineering and compositing with conductive carbonaceous materials are reliable strategies for boosting the sodium storage properties of MMSs. [39] The nanostructured electrodes have several structure-dependent merits, resulting from the nanosized building units, large surface Sodium-ion batteries (SIBs) have drawn enormous attention in the past few years from both academic and industrial battery communities in view of the fascinating advantages of rich abundance and low cost of sodium resources. Among various electrode materials, mixed metal sulfides (MMSs) stand out as promising negative electrode materials for SIBs considering their superior structural and compositional advantages, such as decent el...

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“…However, compared with Li ion, the heavier weight, larger radius, and lower standard potential of Na ion make the SIBs always suffer from sluggish electrochemical reaction kinetics, lower capacity, and inferior cycle performance to LIBs. [10][11][12] Thus, the advanced electrode materials previously studied in lithium-ion batteries do not work effectively for sodium-ion batteries, which require us to explore new high-performance electrode materials for SIBs. In terms of anodes, carbonaceous materials including graphite, hard carbon, and soft carbon exhibit relatively low theoretical capacity (<300 mAh g −1 ).…”

Section: Doi: 101002/smll202004072mentioning

confidence: 99%

Anchoring SnS₂ on TiC/C Backbone to Promote Sodium Ion Storage by Phosphate Ion Doping

Shen

Deng

Liu

et al. 2020

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Tin disulfide (SnS2) shows promising properties toward sodium ion storage with high capacity, but its cycle life and high rate capability are still undermined as a result of poor reaction kinetics and unstable structure. In this work, phosphate ion (PO43−)‐doped SnS2 (P‐SnS2) nanoflake arrays on conductive TiC/C backbone are reported to form high‐quality P‐SnS2@TiC/C arrays via a hydrothermal–chemical vapor deposition method. By virtue of the synergistic effect between PO43− doping and conductive network of TiC/C arrays, enhanced electronic conductivity and enlarged interlayer spacing are realized in the designed P‐SnS2@TiC/C arrays. Moreover, the introduced PO43− can result in favorable intercalation/deintercalation of Na+ and accelerate electrochemical reaction kinetics. Notably, lower bandgap and enhanced electronic conductivity owing to the introduction of PO43− are demonstrated by density function theory calculations and UV–visible absorption spectra. In view of these positive factors above, the P‐SnS2@TiC/C electrode delivers a high capacity of 1293.5 mAh g−1 at 0.1 A g−1 and exhibits good rate capability (476.7 mAh g−1 at 5 A g−1), much better than the SnS2@TiC/C counterpart. This work may trigger new enthusiasm on construction of advanced metal sulfide electrodes for application in rechargeable alkali ion batteries.

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SnS₂ Nanosheets Coating on Nanohollow Cubic CoS₂/C for Ultralong Life and High Rate Capability Half/Full Sodium‐Ion Batteries

Cited by 96 publications

References 60 publications

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

Anchoring SnS₂ on TiC/C Backbone to Promote Sodium Ion Storage by Phosphate Ion Doping

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SnS2 Nanosheets Coating on Nanohollow Cubic CoS2/C for Ultralong Life and High Rate Capability Half/Full Sodium‐Ion Batteries

Cited by 96 publications

References 60 publications

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Emerging Dual‐Channel Transition‐Metal‐Oxide Quasiaerogels by Self‐Embedded Templating

Recent Advances on Mixed Metal Sulfides for Advanced Sodium‐Ion Batteries

Anchoring SnS2 on TiC/C Backbone to Promote Sodium Ion Storage by Phosphate Ion Doping

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Product

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SnS₂ Nanosheets Coating on Nanohollow Cubic CoS₂/C for Ultralong Life and High Rate Capability Half/Full Sodium‐Ion Batteries

Anchoring SnS₂ on TiC/C Backbone to Promote Sodium Ion Storage by Phosphate Ion Doping