A Class of Catalysts of BiOX (X = Cl, Br, I) for Anchoring Polysulfides and Accelerating Redox Reaction in Lithium Sulfur Batteries

Wu, Xian; Liu, Nannan; Wang, Maoxu; Qiu, Yue; Guan, Bin; Tian, Da; Guo, Zhikun; Fan, Longlong; Zhang, Naiqing

doi:10.1021/acsnano.9b05908

Cited by 110 publications

(72 citation statements)

References 33 publications

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“…Extensive efforts have been devoted to constructing the cathode of lithium–sulfur (Li–S) batteries to meet the ever‐increasing energy demands due to the abundant reserves of the materials involved, and affordable cost. [ 1–3 ] However, the commercial application of the sulfur cathode for the Li–S batteries is restrained by several technical barriers [ 4–6 ] compared with Li‐ion battery. [ 7 ] First, the poor conductivity of sulfur and its reaction intermediates limit the sulfur utilization, [ 8 ] which leads to decreased energy density and power density.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Sun

Vijay

Heenen

et al. 2020

Advanced Energy Materials

179

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involved, and affordable cost. [1][2][3] However, the commercial application of the sulfur cathode for the Li-S batteries is restrained by several technical barriers [4][5][6] compared with Li-ion battery. [7] First, the poor conductivity of sulfur and its reaction intermediates limit the sulfur utilization, [8] which leads to decreased energy density and power density. Second, during the charge/discharge process, there is a large volume change, resulting in rapid deterioration of the electrode structure. Various strategies have been investigated to increase electrode conductivity and to accommodate the volume expansion. [9][10][11] Last but not least, the dissolution and transport of lithium polysulfides (LiPSs) in the electrolyte result in the fatal "shuttle effect" that causes the deposition of Li 2 S on Li anode and then degrades the cycle performance. This shuttle effect could be mitigated by 1) trapping/confining the soluble LiPSs in the cathode by physical and chemical adsorption, [12][13][14][15] which prevents the transport of soluble LiPSs in the electrolyte, and 2) enhancing the kinetics of LiPS conversion reactions so that the soluble long-chain LiPS could transform to insoluble short-chain LiPS quickly, limiting the lifetime of soluble LiPS. [16,17] Therefore, a superior Li-S battery could be achieved by designing a cathode with high electricalThe lithium-sulfur (Li-S) battery is widely regarded as a promising energy storage device due to its low price and the high earth-abundance of the materials employed. However, the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox conversion result in inefficient sulfur utilization, low power density, and rapid electrode deterioration. Herein, these challenges are addressed with two strategies 1) increasing LiPS conversion kinetics through catalysis, and 2) alleviating the shuttle effect by enhanced trapping and adsorption of LiPSs. These improvements are achieved by constructing double-shelled hollow nanocages decorated with a cobalt nitride catalyst. The N-doped hollow inner carbon shell not only serves as a physiochemical absorber for LiPSs, but also improves the electrical conductivity of the electrode; significantly suppressing shuttle effect. Cobalt nitride (Co 4 N) nanoparticles, embedded in nitrogen-doped carbon in the outer shell, catalyze the conversion of LiPSs, leading to decreased polarization and fast kinetics during cycling. Theoretical study of the Li intercalation energetics confirms the improved catalytic activity of the Co 4 N compared to metallic Co catalyst. Altogether, the electrode shows large reversible capacity (1242 mAh g −1 at 0.1 C), robust stability (capacity retention of 658 mAh g −1 at 5 C after 400 cycles), and superior cycling stability at high sulfur loading (4.5 mg cm −2 ).

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Section: Introductionmentioning

confidence: 99%

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Sun

Vijay

Heenen

et al. 2020

Advanced Energy Materials

179

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“…Therefore, it is crucial to separate these signals from each other, with the purpose of the improvement of selectivity and sensitivity of DA determination [14][15][16][17]. To solve this problem, different modified electrodes based on the carbon nanomaterials, metal nanoparticles, composites, polymers, and metal oxides have been provided to determine the dopamine [18][19][20]. Recently some nanocomposites containing metal oxides such as CuTRZMoO 4 @PPyÀ n [21], Co 3 O 4 /GO [22], AuÀ ZnO NCAs [23] and TiO 2 À WO 3 [24] have been used for electrochemical determination of DA .…”

Section: Introductionmentioning

confidence: 99%

Facile Green Synthesis of NiO/NiCo₂O₄ Nanocomposite as an Efficient Electrochemical Platform for Determination of Dopamine

Amiri

Javar

2021

Electroanalysis

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The synthesis of NiO/NiCo2O4 nanoparticles by an eco‐friendly, fast, simple and cost‐effective approach employing Urtica extract is reported in this study. The NiO/NiCo2O4 nanocomposite were characterized using VSM, FTIR, XRD, and SEM techniques. Moreover, to construct a modified carbon paste electrode, NiO/NiCo2O4 were employed and this sensor was used for dopamine (DA) detection. Using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques, the electrochemical behavior of dopamine at the NiO/NiCo2O4/CPE was investigated. Analysis of dopamine, with a limit of detection (LOD) equal to 0.04 μM, in the concentration range of 0.1–100.0 μM, was facilitated by NiO/NiCo2O4/CPE. Moreover, the satisfactory selectivity for DA determination in the presence of uric acid (UA) and ascorbic acid (AA), was obtained. The suggested new sensor displayed a good reproducibility, sensitivity, and stability for determination of DA in drug and biological samples.

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“…[1][2][3][4][5] However, the issues related to dissolution of polysulfide during charge and discharge are the main obstacles to the commercialization of LiÀ S batteries. [6][7][8][9] To solve these problems, many groups have focused on the application of porous carbons for LiÀ S batteries. Ever since Ji et al [10] demonstrated the potential of S/CMK-3 (obtained by the melt-diffusion method) for high-capacity applications, many researchers have focused on the fabrication of S/C composites.…”

Section: Enhancing the Of Performance Of Lithium-sulfur Batteries Thrmentioning

confidence: 99%

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

et al. 2020

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Hierarchical mesoporous carbon was studied as a key material for enhancing sulfur utilization in Li−S batteries. Commonly, thermal sulfur infiltration into mesoporous carbon was a representative method for S−C composites; however, these had some problems such as pore blocking or nonuniform deposition of sulfur. Electrochemical sulfur impregnation without chemical or thermal infiltration reduced the preprocess time and enabled efficient polysulfide diffusion into the carbon pores. As the soluble polysulfides are smaller and more mobile than solid‐state sulfur, they could be physically or chemically adsorbed into the pores of the carbon additives. This approach enhanced the cycle stability and rate performance of the batteries. This study will provide an efficient and economic use of porous carbons in the Li−S battery field.

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A Class of Catalysts of BiOX (X = Cl, Br, I) for Anchoring Polysulfides and Accelerating Redox Reaction in Lithium Sulfur Batteries

Cited by 110 publications

References 33 publications

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Facile Green Synthesis of NiO/NiCo₂O₄ Nanocomposite as an Efficient Electrochemical Platform for Determination of Dopamine

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

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A Class of Catalysts of BiOX (X = Cl, Br, I) for Anchoring Polysulfides and Accelerating Redox Reaction in Lithium Sulfur Batteries

Cited by 110 publications

References 33 publications

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Catalytic Polysulfide Conversion and Physiochemical Confinement for Lithium–Sulfur Batteries

Facile Green Synthesis of NiO/NiCo2O4 Nanocomposite as an Efficient Electrochemical Platform for Determination of Dopamine

Enhancing the of Performance of Lithium‐Sulfur Batteries through Electrochemical Impregnation of Sulfur in Hierarchical Mesoporous Carbon Nanoparticles

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Facile Green Synthesis of NiO/NiCo₂O₄ Nanocomposite as an Efficient Electrochemical Platform for Determination of Dopamine