Performance Comparison of Commercial Mobile Phone Battery

Mat, Azrulnizam; Buniran, Surani; Sulaiman, Mohd Amri

doi:10.1142/9789812776259_0018

Cited by 2 publications

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“…LiNi 0.5 Mn 1.5 O 4 is a particularly promising material because of its high voltage, electrochemical stability, and lack of trace metal impurities 6,7 . The physical and chemical properties of LiNi 0.5 Mn 1.5 O 4 have been experimentally determined by X-ray diffraction, scanning electron microscopy, infrared-Raman spectroscopy, electron diffraction, and cyclic voltammetry [11][12][13] . Although the crystallographic and electrochemical properties of LiNi 0.5 Mn 1. is derived from the difference in total energy between the fully lithiated and delithiated materials 14,17,18 The starting structure for our study was a unit cell of LiNi 0.5 Mn 1.5 O 4 crystal (Fig.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Kishida

Orita

Nakamura

et al. 2013

Journal of Power Sources

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LiNi 0.5 Mn 1.5 O 4 , which has a spinel framework structure, is a promising candidate for the cathode material of next-generation lithium-ion batteries with high energy density. We investigate the structural transition in Li x Ni 0.5 Mn 1.5 O 4 (0 ≤ x ≤ 1) through first-principles calculations using the projector augmented wave method with the generalized gradient approximation. We calculate all the unique Li-site occupation configurations in a unit cell to obtain the total energies and the most stable structures for various compositions. Thermodynamic analysis shows that Li 0.5 Ni 0.5 Mn 1.5 O 4 with x = 0.5 is the only stable phase for 0 < x < 1. The decomposition energy is lower than 0.1 eV for 0 < x < 0.5, but is distinctly higher for 0.5 < x < 1. The decomposition energy reaches 0.39 eV at x = 0.75. The ratios of the structures at room temperature are calculated from Boltzmann factors by using the energy differences between structures. The crystal structure of the unit cell changes gradually from x = 0 to 0.5, but changes markedly from x = 0.5 to 1. This first-principles study provides a general evaluation of the variation in the crystal structure with the composition of the bulk material, which affects the cyclability of the electrode.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Kishida

Orita

Nakamura

et al. 2013

Journal of Power Sources

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“…Among secondary batteries, lithium-ion batteries (LIBs) are a class of energy storage devices with significant advantages such as light weight, small size, portability, high energy density, low self-discharge, and long cycle life. − Since the first commercialization of LIBs by Sony in 1991, lithium-ion batteries have been widely used in various fields such as wearable electronics, − mobile devices, especially mobile phones and laptop, electric vehicles, − aerospace industry. − …”

Section: Introductionmentioning

confidence: 99%

Post-synthetic Covalent Organic Framework to Improve the Performance of Solid-State Li⁺ Electrolytes

Zhang

Luo

Hong

et al. 2023

ACS Appl. Mater. Interfaces

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As a new class of crystalline materials, covalent organic frameworks (COFs) have long-range ordered channels and feasibility to functionalize. The well-arranged pores make it possible to contain and transport ions. Here, we designed a novel functionalized anionic COF-SS-Li by a post-synthetic method utilizing the Povarov reaction of BDTA-COF, anchoring −SO3 – groups to the COF backbone and converting the imine linkage to a more stable quinoline unit. The grafted −SO3 – groups and directional channels can promote the lithium-ion transport through a hopping mechanism. As a solid-state lithium-ion electrolyte, COF-SS-Li exhibits the conductivities of 9.63 × 10–5 S cm–1 at 20 °C and 1.28 × 10–4 S cm–1 at 40 °C and a wide electrochemical window of 4.85 V. The assembled Li|COF-SS-Li|Li symmetric cell can cycle stably for 600 h at 0.1 mA cm–2. Also, the Li|COF-SS-Li|LiFePO4 cell delivers an initial capacity of 117 mAh g–1 at 0.1 A g–1 and retains a capacity rate of 56.7% after 500 cycles. The research enriches the solid-state electrolytes for lithium-ion batteries.

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Performance Comparison of Commercial Mobile Phone Battery

Cited by 2 publications

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Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Post-synthetic Covalent Organic Framework to Improve the Performance of Solid-State Li⁺ Electrolytes

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Performance Comparison of Commercial Mobile Phone Battery

Cited by 2 publications

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Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Thermodynamic analysis using first-principles calculations of phases and structures of LixNi0.5Mn1.5O4 (0 ≤ x ≤ 1)

Post-synthetic Covalent Organic Framework to Improve the Performance of Solid-State Li+ Electrolytes

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Post-synthetic Covalent Organic Framework to Improve the Performance of Solid-State Li⁺ Electrolytes