Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li–S Batteries

Wang, Ruirui; Wu, Renbing; Ding, Chaofan; Chen, Ziliang; Xu, Hongbin; Liu, Yongfeng; Zhang, Jichao; Ha, Yuan; Fei, Ben; Pan, Hongge

doi:10.1007/s40820-021-00676-6

Cited by 56 publications

(32 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ultraviolet–visible (UV–Vis) absorption spectrum was carried out to monitor the concentration differences of Li 2 S 4 in the solution after 8 h (Fig. 3 d) [ 43 ]. Notably, the order of remaining LiPSs intensity follows Blank > MXene > MX-TiO 2 > MX-TiN, which trend is consistent with the visual adsorption tests.…”

Section: Resultsmentioning

confidence: 99%

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Wang

Cui

et al. 2022

Nano-Micro Lett.

View full text Add to dashboard Cite

Highlights An in-situ strategy to synthesize ultrathin two-dimensional MXene-TiN heterostructures and the ultrathin structure extremely shortens the electrons diffusion distance from catalysts to active sulfur species. The heterostructure exhibits superior electronic structures to strongly capture the polysulfides and enhance bidirectional electrocatalytic ability between LiPSs and Li 2 S. The advanced cathode achieves an excellent long-term cyclability with an extremely low-capacity fading rate of 0.022% over 1000 cycles and a remarkable areal capacity of 8.27 mAh cm −2 at high sulfur loading of 10.16 mg cm −2 . Supplementary Information The online version contains supplementary material available at 10.1007/s40820-022-00935-0.

show abstract

Section: Resultsmentioning

confidence: 99%

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Wang

Cui

et al. 2022

Nano-Micro Lett.

View full text Add to dashboard Cite

show abstract

“…The rational design of single-atomic mediators implanted at a 3D platform with maximized utilization will have key implications in the electrochemical performance of Li-S batteries. [36,37] Herein, we use a diatomite-template strategy to fabricate single-atomic Fe-N 2 species dispersed on biomorphic 3D hierarchical C 3 N 4 support (3DFeSA-CN), harnessing a Fe loading capacity of 6.32 wt%. Such a biotemplating strategy prevents the stacking of carbonaceous supports, thereby leading to the considerable elevation of Fe loading capacity and atomic utilization.…”

Section: Introductionmentioning

confidence: 99%

“…The rational design of single‐atomic mediators implanted at a 3D platform with maximized utilization will have key implications in the electrochemical performance of Li–S batteries. [ 36,37 ]…”

Section: Introductionmentioning

confidence: 99%

Enhanced Dual‐Directional Sulfur Redox via a Biotemplated Single‐Atomic Fe–N₂ Mediator Promises Durable Li–S Batteries

et al. 2022

View full text Add to dashboard Cite

energy density (2600 Wh kg −1 ) and theoretical capacity (1675 mAh g −1 ). [1][2][3][4][5] Nevertheless, the sluggish reaction kinetics and notorious lithium polysulfide (LiPS) shuttling have markedly hindered its commercialization. [6][7][8][9][10][11] In the past decade, metal-based electrocatalysts, encompassing various compounds and alloys, have been widely explored as the LiPSs regulator in Li-S realm. [12][13][14] Despite their favorable regulation over the adsorptiondiffusion-conversion of LiPSs to a certain extent, the introduction of excessive metals would curtail the energy density of the entire cell, thereby handicapping practical applications. [15] In this sense, singleatomic catalyst (SAC) has a much smaller mass than that of traditional metal-based electrocatalysts, when using SACs (even with an elevated metal content of 10 wt%), the catalyst weight ratio in an entire sulfur electrode would still be quite tiny. SAC as an efficient sulfur redox mediator is hence expected to realize high-energydensity Li-S batteries. Recently, SACs supported on conductive carbon skeletons have attracted growing attention because of their unique size effect, maximized atom availability, and impressive catalytic activity. [16][17][18][19] These features have readily enabled them to promote dual-directional sulfurThe lithium-sulfur (Li-S) battery is considered as an appealing candidate for next-generation electrochemical energy storage systems because of high energy and low cost. Nonetheless, its development is plagued by the severe polysulfide shuttling and sluggish reaction kinetics. Although single-atom catalysts (SACs) have emerged as a promising remedy to expedite sulfur redox chemistry, the mediocre single-atom loading, inferior atomic utilization, and elusive catalytic pathway handicap their practical application. To tackle these concerns, in this work, unsaturated Fe single atoms with high loading capacity (≈6.32 wt%) are crafted on a 3D hierarchical C 3 N 4 architecture (3DFeSA-CN) by means of biotemplated synthesis. By electrokinetic analysis and theoretical calculations, it is uncovered that the 3DFeSA-CN harnesses robust electrocatalytic activity to boost dual-directional sulfur redox. As a result, S@3DFeSA-CN can maintain a durable cyclic performance with a negligible capacity decay rate of 0.031% per cycle over 2000 cycles at 1.0 C. More encouragingly, an assembled Li-S battery with a sulfur loading of 5.75 mg cm −2 can harvest a high areal capacity of 6.18 mAh cm −2 . This work offers a promising solution to optimize the carbonaceous support and coordination environment of SACs, thereby ultimately elevating dual-directional sulfur redox in pragmatic Li-S batteries.

show abstract

“…Lithium-ion batteries (LIBs) have been extensively applied in all aspects of our lives, but the limited lithium resources cannot satisfy the ever-growing demand for future electrical storage system (EES) devices [1][2][3][4][5][6]. Sodium-ion batteries (SIBs) are deemed to be a highly promising alternative, due to the abundant resources, low-cost and, especially, similar working mechanism to LIBs [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

NiS1−xSex Nanoparticles Anchored on Nitrogen-Doped Reduced Graphene Oxide as Highly Stable Anode for Sodium-Ion Battery

et al. 2022

Self Cite

View full text Add to dashboard Cite

Nickel sulfides are regarded as one of the promising anode materials for sodium-ion batteries (SIBs), but the sluggish electrodes kinetics and rapid capacity decay, caused by their intrinsic low electrical conductivity and high bulk expansion, greatly limit their practical application. To overcome these obstacles, nano-sized, selenium-doped, nickel sulfide particles, anchored on nitrogen-doped reduced graphene oxide composites (NiS1−xSex@N–rGO), are rationally synthesized. The broad Na+ diffusion channels, resulting from Se doping, as well as the short Na+ transferring path, attributed from nano-size scale of NiS1−xSex particles, endow NiS1−xSex@N–rGO composites with ultrafast storage kinetics. Moreover, strong coupled effect between the NiS1−xSex and N–rGO is beneficial to the uniform dispersion of NiS1−xSex nanoparticles, improving electrical conductivity and suppressing the volume variation in charge/discharge process. Furthermore, the cut-off discharge voltage is modulated to realize the smaller volume change during cycle process. As a result, the fabricated anode of SIBs based on NiS1−xSex@N–rGO composites exhibits a high specific capacity of 300 mAh g−1, at the current density of 1 A g−1, after 1000 cycles with almost no capacity degradation.

show abstract

Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li–S Batteries

Cited by 56 publications

References 55 publications

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Enhanced Dual‐Directional Sulfur Redox via a Biotemplated Single‐Atomic Fe–N₂ Mediator Promises Durable Li–S Batteries

NiS1−xSex Nanoparticles Anchored on Nitrogen-Doped Reduced Graphene Oxide as Highly Stable Anode for Sodium-Ion Battery

Contact Info

Product

Resources

About

Porous Carbon Architecture Assembled by Cross-Linked Carbon Leaves with Implanted Atomic Cobalt for High-Performance Li–S Batteries

Cited by 56 publications

References 55 publications

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Construction of Ultrathin Layered MXene-TiN Heterostructure Enabling Favorable Catalytic Ability for High-Areal-Capacity Lithium–Sulfur Batteries

Enhanced Dual‐Directional Sulfur Redox via a Biotemplated Single‐Atomic Fe–N2 Mediator Promises Durable Li–S Batteries

NiS1−xSex Nanoparticles Anchored on Nitrogen-Doped Reduced Graphene Oxide as Highly Stable Anode for Sodium-Ion Battery

Contact Info

Product

Resources

About

Enhanced Dual‐Directional Sulfur Redox via a Biotemplated Single‐Atomic Fe–N₂ Mediator Promises Durable Li–S Batteries