Two-dimensional ZnS@N-doped carbon nanoplates for complete lithium ion batteries

Abstract Metal sulfides are attractive anode materials for lithium ion batteries due to the high specific capacities and better electrochemical kinetics comparing to their oxide counterparts. In this paper, novel monocrystalline wurtzite ZnS@N-doped carbon (ZnS@N-C) nanoplates, whose morphology and phase are different from the common ZnS particles with cubic phase, are successfully synthesized. The ZnS@N-C nanoplates exhibit good cycling stability with a high reversible specific capacity of 536.8 mAh∙g-1 after 500 cycles at a current density of 500 mA∙g-1, which is superior to the pure ZnS nanoplates, illustrating the obvious effect of the N-doped carbon coating for alleviating volume change of the ZnS nanoplates and enhancing the electronic conductivity during charge/discharge processes. Furthermore, it is revealed that the ZnS single crystals with wurtzite phase in the ZnS@N-C nanoplates are transformed to the polycrystalline cubic phase ZnS after charge/discharge processes. In particular, the ZnS@N-C nanoplates are combined with the commercial LiNi0.6Co0.2Mn0.2O2 cathode to fabricate a new type of LiNi0.6Co0.2Mn0.2O2/ZnS@N-C complete battery, which exhibits good cycling stability up to 120 cycles at 1C rate after the prelithiation treatment on the ZnS@N-C anode, highlighting the potential of the ZnS@N-C nanoplates as an anode material for lithium ion battery.

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Hybrid separator containing reactive, nanostructured alumina promoting in-situ gel electrolyte formation for lithium-ion batteries with good cycling stability and enhanced safety

Journal of Power Sources ◽

10.1016/j.jpowsour.2020.228519 ◽

2020 ◽

Vol 472 ◽

pp. 228519

Author(s):

Jun Hwan Ahn ◽

Tae-Sun You ◽

Sang-Min Lee ◽

Daniel Esken ◽

Daniel Dehe ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Lithium Ion ◽

Cycling Stability ◽

Gel Electrolyte ◽

In Situ Gel ◽

Good Cycling Stability

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Chemically Cross-Linked Gel Polymer Electrolytes for Highly Safe Lithium-Ion Batteries with Good Cycling Stability

ECS Meeting Abstracts ◽

10.1149/ma2021-012134mtgabs ◽

2021 ◽

Vol MA2021-01 (2) ◽

pp. 134-134

Author(s):

Jeong-Yun Kim ◽

Da-ae Lim ◽

Bora Jeong ◽

Hye-Min Kim ◽

Dong-Won Kim

Keyword(s):

Lithium Ion Batteries ◽

Polymer Electrolytes ◽

Lithium Ion ◽

Cycling Stability ◽

Gel Polymer Electrolytes ◽

Good Cycling Stability

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The Use of Succinonitrile as an Electrolyte Additive for Composite-Fiber Membranes in Lithium-Ion Batteries

Membranes ◽

10.3390/membranes10030045 ◽

2020 ◽

Vol 10 (3) ◽

pp. 45 ◽

Cited By ~ 2

Author(s):

Jahaziel Villarreal ◽

Roberto Orrostieta Chavez ◽

Sujay A. Chopade ◽

Timothy P. Lodge ◽

Mataz Alcoutlabi

Keyword(s):

Ionic Liquid ◽

Ionic Conductivity ◽

Lithium Ion Batteries ◽

Specific Capacity ◽

Lithium Ion ◽

Composite Fiber ◽

Galvanostatic Charge ◽

Lithium Anode ◽

Charge Discharge ◽

Licoo2 Cathode

In the present work, the effect of temperature and additives on the ionic conductivity of mixed organic/ionic liquid electrolytes (MOILEs) was investigated by conducting galvanostatic charge/discharge and ionic conductivity experiments. The mixed electrolyte is based on the ionic liquid (IL) (EMI/TFSI/LiTFSI) and organic solvents EC/DMC (1:1 v/v). The effect of electrolyte type on the electrochemical performance of a LiCoO2 cathode and a SnO2/C composite anode in lithium anode (or cathode) half-cells was also investigated. The results demonstrated that the addition of 5 wt.% succinonitrile (SN) resulted in enhanced ionic conductivity of a 60% EMI-TFSI 40% EC/DMC MOILE from ~14 mS·cm−1 to ~26 mS·cm−1 at room temperature. Additionally, at a temperature of 100 °C, an increase in ionic conductivity from ~38 to ~69 mS·cm−1 was observed for the MOILE with 5 wt% SN. The improvement in the ionic conductivity is attributed to the high polarity of SN and its ability to dissolve various types of salts such as LiTFSI. The galvanostatic charge/discharge results showed that the LiCoO2 cathode with the MOILE (without SN) exhibited a 39% specific capacity loss at the 50th cycle while the LiCoO2 cathode in the MOILE with 5 wt.% SN showed a decrease in specific capacity of only 14%. The addition of 5 wt.% SN to the MOILE with a SnO2/C composite-fiber anode resulted in improved cycling performance and rate capability of the SnO2/C composite-membrane anode in lithium anode half-cells. Based on the results reported in this work, a new avenue and promising outcome for the future use of MOILEs with SN in lithium-ion batteries (LIBs) can be opened.

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ZnFe2O4, a Green and High-Capacity Anode Material for Lithium-Ion Batteries: A Review

Applied Sciences ◽

10.3390/app112411713 ◽

2021 ◽

Vol 11 (24) ◽

pp. 11713

Author(s):

Marcella Bini ◽

Marco Ambrosetti ◽

Daniele Spada

Keyword(s):

Lithium Ion Batteries ◽

Broad Class ◽

High Surface ◽

Electronic Conductivity ◽

Specific Capacity ◽

Rate Capability ◽

Volume Ratio ◽

Lithium Ion ◽

Structural Features ◽

Synthesis Methods

Ferrites, a broad class of ceramic oxides, possess intriguing physico-chemical properties, mainly due to their unique structural features, that, during these last 50–60 years, made them the materials of choice for many different applications. They are, indeed, applied as inductors, high-frequency materials, for electric field suppression, as catalysts and sensors, in nanomedicine for magneto-fluid hyperthermia and magnetic resonance imaging, and, more recently, in electrochemistry. In particular, ZnFe2O4 and its solid solutions are drawing scientists’ attention for the application as anode materials for lithium-ion batteries (LIBs). The main reasons are found in the low cost, abundance, and environmental friendliness of both Zn and Fe precursors, high surface-to-volume ratio, relatively short path for Li-ion diffusion, low working voltage of about 1.5 V for lithium extraction, and the high theoretical specific capacity (1072 mA h g−1). However, some drawbacks are represented by fast capacity fading and poor rate capability, resulting from a low electronic conductivity, severe agglomeration, and large volume change during lithiation/delithiation processes. In this review, the main synthesis methods of spinels will be briefly discussed before presenting the most recent and promising electrochemical results on ZnFe2O4 obtained with peculiar morphologies/architectures or as composites, which represent the focus of this review.

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Electrochemically Inert Li2MnO3: The Key to Improving the Cycling Stability of Li-Rich Manganese Oxide Used in Lithium-Ion Batteries

Materials ◽

10.3390/ma14164751 ◽

2021 ◽

Vol 14 (16) ◽

pp. 4751

Author(s):

Lian-Bang Wang ◽

He-Shan Hu ◽

Wei Lin ◽

Qing-Hong Xu ◽

Jia-Dong Gong ◽

...

Keyword(s):

Electrochemical Performance ◽

Cathode Material ◽

Manganese Oxide ◽

Lithium Ion Batteries ◽

Retention Rate ◽

Specific Capacity ◽

Lithium Ion ◽

Cycling Stability ◽

Structural Defects ◽

Hydrothermal Route

Lithium-rich manganese oxide is a promising candidate for the next-generation cathode material of lithium-ion batteries because of its low cost and high specific capacity. Herein, a series of xLi2MnO3·(1 − x)LiMnO2 nanocomposites were designed via an ingenious one-step dynamic hydrothermal route. A high concentration of alkaline solution, intense hydrothermal conditions, and stirring were used to obtain nanoparticles with a large surface area and uniform dispersity. The experimental results demonstrate that 0.072Li2MnO3·0.928LiMnO2 nanoparticles exhibit a desirable electrochemical performance and deliver a high capacity of 196.4 mAh g−1 at 0.1 C. This capacity was maintained at 190.5 mAh g−1 with a retention rate of 97.0% by the 50th cycle, which demonstrates the excellent cycling stability. Furthermore, XRD characterization of the cycled electrode indicates that the Li2MnO3 phase of the composite is inert, even under a high potential (4.8 V), which is in contrast with most previous reports of lithium-rich materials. The inertness of Li2MnO3 is attributed to its high crystallinity and few structural defects, which make it difficult to activate. Hence, the final products demonstrate a favorable electrochemical performance with appropriate proportions of two phases in the composite, as high contents of inert Li2MnO3 lower the capacity, while a sufficient structural stability cannot be achieved with low contents. The findings indicate that controlling the composition through a dynamic hydrothermal route is an effective strategy for developing a Mn-based cathode material for lithium-ion batteries.

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La2O3-coated Li1.2Mn0.54Ni0.13Co0.13O2 as cathode materials with enhanced specific capacity and cycling stability for lithium-ion batteries

Ceramics International ◽

10.1016/j.ceramint.2016.07.016 ◽

2016 ◽

Vol 42 (14) ◽

pp. 15623-15633 ◽

Cited By ~ 27

Author(s):

Lin Zhou ◽

Mijie Tian ◽

Yunlong Deng ◽

Qiaoji Zheng ◽

Chenggang Xu ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Cathode Materials ◽

Specific Capacity ◽

Lithium Ion ◽

Cycling Stability

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High capacity and good cycling stability of multi-walled carbon nanotube/SnO2 core–shell structures as anode materials of lithium-ion batteries

Materials Research Bulletin ◽

10.1016/j.materresbull.2009.11.011 ◽

2010 ◽

Vol 45 (4) ◽

pp. 437-441 ◽

Cited By ~ 26

Author(s):

Chun-Ling Zhu ◽

Mi-lin Zhang ◽

Ying-Jie Qiao ◽

Peng Gao ◽

Yu-Jin Chen

Keyword(s):

Carbon Nanotube ◽

Lithium Ion Batteries ◽

Anode Materials ◽

High Capacity ◽

Lithium Ion ◽

Cycling Stability ◽

Shell Structures ◽

Core Shell ◽

Multi Walled Carbon Nanotube ◽

Good Cycling Stability

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Enhanced fast charge–discharge performance of Li4Ti5O12 as anode materials for lithium-ion batteries by Ce and CeO2 modification using a facile method

RSC Advances ◽

10.1039/c5ra00523j ◽

2015 ◽

Vol 5 (47) ◽

pp. 37367-37376 ◽

Cited By ~ 28

Author(s):

Ting-Feng Yi ◽

Jin-Zhu Wu ◽

Mei Li ◽

Yan-Rong Zhu ◽

Ying Xie ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Anode Materials ◽

Electronic Conductivity ◽

Lithium Ion ◽

Solid State Method ◽

Discharge Performance ◽

Fast Charge ◽

Improved Performance ◽

Charge Discharge

Ce and CeO2in situ modified Li4Ti5O12 with fast charge–discharge performance for lithium-ion batteries were prepared by a solid-state method. The improved performance are found to be due to the increased ionic and electronic conductivity.

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