A durable ZnS cathode for aqueous Zn-S batteries

Liu, Dongdong; He, Bin; Zhong, Yun; Chen, Jie; Yuan, Lixia; Li, Zhen; Huang, Yunhui

doi:10.1016/j.nanoen.2022.107474

Cited by 42 publications

(47 citation statements)

References 37 publications

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“…Huang et al. fabricated ZnS@carbon fiber structure as cathode, which showed obviously reduced voltage hysteresis (500 mV) than bare ZnS (700 mV) [32] . Besides, the introduction of redox couples and electrolyte additives are also effective ways to decrease voltage hysteresis [20,38] .…”

Section: Resultsmentioning

confidence: 99%

“…Huang et al fabricated ZnS@carbon fiber structure as cathode, which showed obviously reduced voltage hysteresis (500 mV) than bare ZnS (700 mV). [32] Besides, the introduction of redox couples and electrolyte additives are also effective ways to decrease voltage hysteresis. [20,38] To further prove the influence of graphene in ZnTe/rGO composite, EIS measurements of ZnTe, ZnTe/rGO and ZnTe/rGO-50 cells have been conducted in the status of fresh or cycled.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

“…[41] Similar to ZnS cathode, the crystallinity of ZnTe would decrease after the conversion between ZnTe and Te, leading to amorphous ZnTe in the discharged state. [32] To further detect the discharge products and possible reaction, XPS spectra at the states of discharged to 0.6, 0.2 V and fully charged are investigated. The high-resolution XPS spectra of Te 3d are shown in Figure 5a.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

“…[31] Furthermore, combination of active materials with coating materials such as graphene or conductive polymer is also a widely used way to ameliorate volume expansion and improve conductivity. For instance, Huang et al [32] constructed ZnS@carbon composites as cathode materials for ZIB and exhibited a stable cycling stability with capacity retention of about 90 % after 100 cycles.…”

Section: Introductionmentioning

confidence: 99%

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ZnTe/rGO Composite as the Fully Zinced Conversion‐Type Cathodes for Aqueous Zinc Ion Batteries**

et al. 2023

Chemistry A European J

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Conversion‐type cathodes for aqueous zinc ion batteries (ZIBs) can provide flat plateau slop and stable output potential, compared to general intercalation‐type cathodes. The high volumetric capacity and stable output potential of Te make it a promising cathode for ZIBs, but sluggish kinetics and large volume change hinder its further application. To address these issues, we revisit fully zinced ZnTe and construct ZnTe/rGO composites as the new conversion‐type cathode. The electrode undergoes a solid‐to‐solid conversion reaction and shows a stable output potential with ultra‐flat discharge plateau slop of 0.09 V (Ah g−1)−1. When ZnTe is de‐zinced and transformed to Te during charge process, it has a volume shrinkage which generates empty space in graphene matrix for latter volume expansion of Te. The graphene matrix also improves conductivity and reaction kinetics of the cathode. Due to the combination of pre‐zincation of ZnTe, graphene matrix and the elimination of “shuttle effects” process, ZnTe/rGO electrode exhibits a high and stable capacity of 186 mAh g−1 at 500 mA g−1 after 300 cycling, with almost no decay after initial 10 cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Chemistry-a European Journalmentioning

confidence: 99%

Section: Chemistry-a European Journalmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

ZnTe/rGO Composite as the Fully Zinced Conversion‐Type Cathodes for Aqueous Zinc Ion Batteries**

et al. 2023

Chemistry A European J

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“…proposed a periodically stacked CuS-CTAB superlattice electrode, which shows a capacity of 225.3 mAh g CuS −1 at 0.1 A g −1 and stable cycling performance [ 21 ]. It can be found that the reliable output-specific capacities of current TMSs are far from that of elemental sulfur [ 22 , 23 ]. The M x S y discharge products with limited reactivity significantly suppress the sulfur oxidation reaction (SOR) during charging [ 24 ], resulting in low actual sulfur reversibility.…”

Section: Introductionmentioning

confidence: 99%

Activating sulfur oxidation reactionviasix-electron redox mesocrystal NiS2 for sulfur-based aqueous batteries

Yang

Wang

Chen

et al. 2022

National Science Review

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Sulfur-based aqueous batteries (SABs) are deemed promising candidates for safe, low-cost, and high-capacity energy storage. However, despite their high theoretical capacity, achieving high reversible value remains a great challenge due to the thermodynamic and kinetics problems of elemental sulfur. Here, the reversible six-electron redox electrochemistry is constructed by activating sulfur oxidation reaction (SOR) process of the elaborate mesocrystal NiS2 (M-NiS2). Through the unique 6e− solid-to-solid conversion mechanism, the SOR efficiency can reach an unprecedented degree of ca. 96.0%. The SOR efficiency is further revealed to be closely associated with the kinetics feasibility and thermodynamic stability of the M-NiS2 intermedium in the formation of elemental sulfur. Benefiting from the boosted SOR, compared with the bulk electrode, the M-NiS2 electrode exhibits a high reversible capacity (1258 mAh g−1), ultrafast reaction kinetics (932 mAh g−1 at 12 A g−1), and long-term cyclability (2000 cycles at 20 A g−1). As a proof of concept, a new M-NiS2||Zn hybrid aqueous battery exhibits an output voltage of 1.60 V and an energy density of 722.4 Wh kgcath−1, which opens a new opportunity for the development of high-energy aqueous batteries.

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Bidirectional Atomic Iron Catalysis of Sulfur Redox Conversion in High‐Energy Flexible ZnS Battery

Zhang

Wang

et al. 2023

Adv Funct Materials

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To achieve the full theoretical potential of high energy ZnS electrochemistry, the incomplete and sluggish conversion during battery discharging and high reactivation energy barrier during battery recharging associated with the sulfur cathodes must be overcome. Herein, the atomically dispersed Fe sites with FeN 4 coordination are experimentally and theoretically predicted as bidirectional electrocatalytic hotspots to simultaneously manipulate the complete sulfur conversion and minimize the energy barrier of ZnS decomposition. It is discovered that the Fe sites were favorable for strong sulfur and possible zinc polysulfide intermediate adsorption, and ensure nearly complete sulfur to ZnS conversion during discharge. For the following recharging process, the electrodeposited ZnS can be readily reversible charged back to S without a noticeable activation overpotential around FeN 4 moieties comparing to pure carbon matrixes. As expected, the freestanding iron embedded carbon fiber cloth supported sulfur cathode delivers a high specific capacity of 1143 mAh g −1 and a lower voltage hysteresis of 0.61 V. As elaborated by postmortem analysis, the degradation mechanism of ZnS cell is the accumulation of inactive ZnS crystals on the cathode side rather than the Zn metallic depletion. More encouragingly, a flexible solid-state ZnS battery with a high discharge capacity and stable reversibility is also demonstrated.

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A durable ZnS cathode for aqueous Zn-S batteries

Cited by 42 publications

References 37 publications

ZnTe/rGO Composite as the Fully Zinced Conversion‐Type Cathodes for Aqueous Zinc Ion Batteries**

ZnTe/rGO Composite as the Fully Zinced Conversion‐Type Cathodes for Aqueous Zinc Ion Batteries**

Activating sulfur oxidation reactionviasix-electron redox mesocrystal NiS2 for sulfur-based aqueous batteries

Bidirectional Atomic Iron Catalysis of Sulfur Redox Conversion in High‐Energy Flexible ZnS Battery

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