Copper sulfides nanocrystals encapsulated in polypyrrole nanotubes for stable lithium storage

Ren, Congying; Yue, Hailong; Wang, Guangming; Wen, Quan; Jin, Rencheng

doi:10.1016/j.matlet.2020.128840

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The cyclic voltammogram (CV) curve of S-1 was tested at a scan rate of 0.1 mV s −1 over a voltage range of 0.01-3.0 V (vs. Li + /Li), and the result of this is shown in Figure S4. Similar to other papers [37,38], the reduction peak in the discharge process represents the conversion of Li x CuS (CuS + xLi + + xe − → Li x CuS) and the oxidation peaks in the charge process are associated with the formation of CuS. The Li-ion storage properties of S-1 were researched via the galvanostatic discharge-charge method.…”

Section: Li-ion Storage Propertiesmentioning

confidence: 77%

The Facile Synthesis of Hollow CuS Microspheres Assembled from Nanosheets for Li-Ion Storage and Photocatalytic Applications

et al. 2023

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Herein, well-defined hollow CuS microspheres assembled from nanosheets were successfully synthesized through a facile solvothermal method. Hollow CuS microspheres have an average diameter of 1.5 μm; moreover, the primary CuS nanosheets have an ultrathin thickness of about 10 nm and are bound by {0001} polar facets. When used as anodes for lithium-ion batteries (LIBs), hollow CuS microspheres exhibit excellent electrochemical properties, including a large discharge capacity (610.1 mAh g−1 at 0.5 C), an excellent rate capability (207.6 and 143.4 mAh g−1 at 1 and 5 C), and a superior cyclic stability (196.3 mAh g−1 at 1 C after 500 cycles). When used as photocatalysts for Rhodamine B (RhB), hollow CuS microspheres can degrade more than 99% of the initial RhB within 21 min. These excellent Li-ion storage properties and photocatalytical performances are attributed to their unique hierarchical hollow structure.

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Section: Li-ion Storage Propertiesmentioning

confidence: 77%

The Facile Synthesis of Hollow CuS Microspheres Assembled from Nanosheets for Li-Ion Storage and Photocatalytic Applications

et al. 2023

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“…The desperate demands for rechargeable lithium-ion batteries (LIBs) in various energy storage devices greatly promote the constant pursuit of new electrode materials, especially anode materials with high specific capacity and long-life. [1][2][3] Constrained by the low specific capacity of only 372 mAh g À 1 for conventional graphite, transition metal sulfides (TMSs, e. g. MoS 2 , [4] CoS 2 , [5][6][7] CuS, [8][9][10] SnS 2 [11,12] ) have been studied insensitively because of their intrinsic safety, high capacity, especially the superior electrical conductivity and mechanical stability compared with their metal oxide counterparts. [13][14][15][16] Among the TMSs group, manganese sulfide (MnS), typically the stable αphase, has been deemed as a prospective anode material for its merits of almost twice the theoretical capacity of graphite (616 mAh g À 1 ), cheaper manganese resource and environmentally-friendliness.…”

Section: Introductionmentioning

confidence: 99%

Facile and Scalable Fabrication of Sub‐Micro MnS@Nitrogen‐Sulfur‐Codoped‐Carbon Composites for High‐Performance Lithium‐Ion Half and Full‐Cell Batteries

et al. 2022

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Nanostructured manganese sulfide (MnS) has been verified to be effective to address the issues of MnS as next‐generation anode material in high energy lithium‐ion batteries (LIBs). The scale‐up fabrication, however, is still challenged by the multistep and rigid processes of synthesizing MnS nanoparticles. Herein, by using micro‐sized MnS as low‐cost MnS source, we present a facile, cost‐effective and scalable strategy to prepare a sub‐micrometer sized MnS@NSC composite, in which MnS nanoparticles are encapsulated into N,S‐codoped carbon matrix (NSC) deriving from polyacrylonitrile (PAN). The NSC matrix combined with homogeneously distributed MnS nanoparticles crushed from micro‐MnS provide fast access of lithium ion/electron and robust structure, leading to remarkable cycling stability (551.6 mAh g−1 at 0.5 A g−1 even after 400 cycles) and desirable rate capability (624 mAh g−1 at 0.1 A g−1 and around 300 mAh g−1 at 2 A g−1). Particularly, the assembled LIB full cell by coupling the anode with LiFePO4 (LFP) cathode presents an encouragingly cycling retention of 96 % after 100 cycles. This work provides a new possibility for design and industrial implementation of MnS as advanced anode materials for LIBs.

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Tubular Polypyrrole with Chloride Ion Dopants as an Ultrafast Organic Anode for High‐Power Lithium‐Ion Batteries

Chen

et al. 2023

ChemSusChem

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Polypyrrole (PPy), as a representative p‐type conductive polymer, attracts wide attention for energy storage materials. However, the sluggish reaction kinetics and low specific capacity of PPy impede its application in high‐power lithium‐ion batteries (LIBs). Herein, tubular PPy with chloride and methyl orange (MO) anionic dopants is synthesized and investigated as an anode for LIBs. The Cl− and MO anionic dopants can increase the ordered aggregation and the conjugation length of pyrrolic chains, forming plentiful conductive domains and affecting the conduction channel inside the pyrrolic matrix, thereby achieving fast charge transfer and Li+ ion diffusion, low ion transfer energy barriers, and rapid reaction kinetics. On account of the above synergistic effect, PPy electrodes deliver a high specific capacity of 2067.8 mAh g−1 at 200 mA g−1 and a remarkable rate capacity of 1026 mAh g−1at 10 A g−1, realizing high energy density (724 Wh kg−1) and power density (7237 W kg−1) simultaneously.

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Copper sulfides nanocrystals encapsulated in polypyrrole nanotubes for stable lithium storage

Cited by 3 publications

References 12 publications

The Facile Synthesis of Hollow CuS Microspheres Assembled from Nanosheets for Li-Ion Storage and Photocatalytic Applications

The Facile Synthesis of Hollow CuS Microspheres Assembled from Nanosheets for Li-Ion Storage and Photocatalytic Applications

Facile and Scalable Fabrication of Sub‐Micro MnS@Nitrogen‐Sulfur‐Codoped‐Carbon Composites for High‐Performance Lithium‐Ion Half and Full‐Cell Batteries

Tubular Polypyrrole with Chloride Ion Dopants as an Ultrafast Organic Anode for High‐Power Lithium‐Ion Batteries

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