Electrochemical performance and electronic properties of shell LiNi0.5Mn1.5O4 hollow spheres for lithium ion battery

Shell spinel LiNi[Formula: see text]Mn[Formula: see text]O4 hollow microspheres were successfully synthesized by MnCO3 template, and characterized by XRD, SEM, and TEM. The results show that the hollow LiNi[Formula: see text]Mn[Formula: see text]O4 cathode has good cycle stability to reach 124.5, 119.8, and 96.6[Formula: see text]mAh/g at 0.5, 1, and 5 C, the corresponding retention rate of 98.1%, 98.2%, and 98.0% after 50 cycles at 20[Formula: see text]C, and the reversible capacity of 94.6[Formula: see text]mAh/g can be obtained at 1 C rate at 55[Formula: see text]C, 83.3% retention after 100 cycles. As the temperature decreases from 10[Formula: see text]C to [Formula: see text]C, the resistance of [Formula: see text] increases from 5.5 [Formula: see text] to 135 [Formula: see text], [Formula: see text] from 27 [Formula: see text] to 353.2 [Formula: see text], and [Formula: see text] from 12.7 [Formula: see text] to 73.0 [Formula: see text]. Moreover, the B constant and [Formula: see text] activation energy are 4480[Formula: see text]K and 37.22[Formula: see text]KJ/mol for the NTC spinel material, respectively.

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Electrochemical Performance of Hollow α-Fe2O3 Spheres as Anode Material for Lithium-ion Battery

Journal of New Materials for Electrochemical Systems ◽

10.14447/jnmes.v15i1.72 ◽

2011 ◽

Vol 15 (1) ◽

pp. 1-4

Author(s):

Zhijia Du ◽

Shichao Zhang ◽

Zhiming Bai ◽

Tao Jiang ◽

Guanrao Liu

Keyword(s):

Electron Microscopy ◽

Lithium Ion Battery ◽

Anode Material ◽

Retention Rate ◽

Hollow Spheres ◽

Hollow Structure ◽

Lithium Ion ◽

Reversible Capacity ◽

Lithium Storage ◽

Ion Migration

α-Fe2O3 spheres were synthesized by a facile hydrothermal method followed by a calcination step. The crystalline structure and morphology of the synthesized materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The morphology of the sample consisted of porous hollow spheres that ranged about hundreds of nanometers and were composed of well crystallized nanoparticles about a dozen nm. The electrochemical properties of the sample were evaluated by cyclic voltammetry (CV) and charge/discharge measurements. The discharge/charge capacities in the first cycle achieved 1336/934 mAh g-1 at the rate of 0.2 C. The reversible capacity in the 50th cycle remained 840 mAh g-1 with impressive retention rate of 90%. This good lithium storage property was probably ascribed to the porous and hollow structure and nanoscale α-Fe2O3 particles, which enlarged the surface area and shortened the pathway for lithium ion migration. The appealing electrochemical capability indicated the potential implementation of hollow Fe2O3 spheres as anode material for future lithium-ion battery.

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Multishelled NiO Hollow Spheres Decorated by Graphene Nanosheets as Anodes for Lithium-Ion Batteries with Improved Reversible Capacity and Cycling Stability

Journal of Nanomaterials ◽

10.1155/2016/4901847 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6 ◽

Cited By ~ 4

Author(s):

Lihua Chu ◽

Meicheng Li ◽

Yu Wang ◽

Xiaodan Li ◽

Zipei Wan ◽

...

Keyword(s):

Electrochemical Performance ◽

Graphene Nanosheets ◽

Hollow Spheres ◽

Modern Science ◽

Lithium Ion ◽

Reversible Capacity ◽

Graphene Sheets ◽

Reduced Graphene ◽

Graphene Nanocomposite ◽

A Current

Graphene-based nanocomposites attract many attentions because of holding promise for many applications. In this work, multishelled NiO hollow spheres decorated by graphene nanosheets nanocomposite are successfully fabricated. The multishelled NiO microspheres are uniformly distributed on the surface of graphene, which is helpful for preventing aggregation of as-reduced graphene sheets. Furthermore, the NiO/graphene nanocomposite shows much higher electrochemical performance with a reversible capacity of 261.5 mAh g−1at a current density of 200 mA g−1after 100 cycles tripled compared with that of pristine multishelled NiO hollow spheres, implying the potential application in modern science and technology.

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Dual carbon layer hybridized mesoporous tin hollow spheres for fast-rechargeable and highly-stable lithium-ion battery anodes

Journal of Materials Chemistry A ◽

10.1039/c7ta01399j ◽

2017 ◽

Vol 5 (27) ◽

pp. 14422-14429 ◽

Cited By ~ 30

Author(s):

Weili An ◽

Jijiang Fu ◽

Shixiong Mei ◽

Lu Xia ◽

Xingxing Li ◽

...

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Battery ◽

Hollow Spheres ◽

Lithium Ion ◽

Carbon Layer ◽

Sn Nanoparticle

Dual carbon layers effectively enhance the electrochemical performance of ultrasmall Sn nanoparticle assembled hollow spheres.

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A multilayered sturdy shell protects silicon nanoparticle Si@void C@TiO2 as an advanced lithium ion battery anode

Physical Chemistry Chemical Physics ◽

10.1039/d0cp05434h ◽

2021 ◽

Vol 23 (6) ◽

pp. 3934-3941

Author(s):

Li Hou ◽

Ruiwen Cui ◽

Shuangsheng Xiong ◽

Xinyu Jiang ◽

Dong Wang ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Lithium Ion Battery ◽

Anode Material ◽

Lithium Ion ◽

Reversible Capacity ◽

Cycle Stability ◽

Silicon Nanoparticle ◽

Component Structure ◽

High Reversible Capacity ◽

Battery Anode

A functional double layer Si-based multi-component structure Si@void C@TiO2 was designed as anode material for lithium-ion batteries with high reversible capacity and long cycle stability.

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One-Pot Synthesized Amorphous Cobalt Sulfide With Enhanced Electrochemical Performance as Anodes for Lithium-Ion Batteries

Frontiers in Chemistry ◽

10.3389/fchem.2021.818255 ◽

2022 ◽

Vol 9 ◽

Author(s):

Long-Long Ren ◽

Lin-Hui Wang ◽

Yu-Feng Qin ◽

Qiang Li

Keyword(s):

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Rate Capability ◽

Lithium Ion ◽

Reversible Capacity ◽

Cobalt Sulfide ◽

Cycle Stability ◽

One Pot ◽

Initial Discharge ◽

Enhanced Electrochemical Performance

In order to solve the poor cycle stability and the pulverization of cobalt sulfides electrodes, a series of amorphous and crystalline cobalt sulfides were prepared by one-pot solvothermal synthesis through controlling the reaction temperatures. Compared to the crystalline cobalt sulfide electrodes, the amorphous cobalt sulfide electrodes exhibited superior electrochemical performance. The high initial discharge and charge capacities of 2,132 mAh/g and 1,443 mAh/g at 200 mA/g were obtained. The reversible capacity was 1,245 mAh/g after 200 cycles, which is much higher than the theoretical capacity. The specific capability was 815 mAh/g at 800 mA/g and increased to 1,047 mAh/g when back to 100 mA/g, indicating the excellent rate capability. The outstanding electrochemical performance of the amorphous cobalt sulfide electrodes could result from the unique characteristics of more defects, isotropic nature, and the absence of grain boundaries for amorphous nanostructures, indicating the potential application of amorphous cobalt sulfide as anodes for lithium-ion batteries.

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Characterization of Sn4P3–Carbon Composite Films for Lithium-Ion Battery Anode Fabricated by Aerosol Deposition

Nanomaterials ◽

10.3390/nano9071032 ◽

2019 ◽

Vol 9 (7) ◽

pp. 1032 ◽

Cited By ~ 3

Author(s):

Toki Moritaka ◽

Yuh Yamashita ◽

Tomohiro Tojo ◽

Ryoji Inada ◽

Yoji Sakurai

Keyword(s):

Electrochemical Performance ◽

Composite Film ◽

Lithium Ion Battery ◽

Active Material ◽

Lithium Ion ◽

Reversible Capacity ◽

Aerosol Deposition ◽

Raw Material ◽

Composite Powders ◽

Battery Anode

We fabricated tin phosphide–carbon (Sn4P3/C) composite film by aerosol deposition (AD) and investigated its electrochemical performance for a lithium-ion battery anode. Sn4P3/C composite powders prepared by a ball milling was used as raw material and deposited onto a stainless steel substrate to form the composite film via impact consolidation. The Sn4P3/C composite film fabricated by AD showed much better electrochemical performance than the Sn4P3 film without complexing carbon. Although both films showed initial discharge (Li+ extraction) capacities of approximately 1000 mAh g−1, Sn4P3/C films retained higher reversible capacity above 700 mAh g−1 after 100 cycles of charge and discharge processes while the capacity of Sn4P3 film rapidly degraded with cycling. In addition, by controlling the potential window in galvanostatic testing, Sn4P3/C composite film retained the reversible capacity of 380 mAh g−1 even after 400 cycles. The complexed carbon works not only as a buffer to suppress the collapse of electrodes by large volume change of Sn4P3 in charge and discharge reactions but also as an electronic conduction path among the atomized active material particles in the film.

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