Ultrahigh volumetric capacity lithium ion battery anodes with CNT–Si film

Wang, Xinghui; Sun, Leimeng; Susantyoko, Rahmat Agung; Yu, Fan

doi:10.1016/j.nanoen.2014.05.020

Cited by 95 publications

(56 citation statements)

References 43 publications

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“…It is known that the overall capacitance of a material can be also ascribed to other phenomena such as surface double layer formation or surface faradaic adsorption, and to bulk faradaic intercalation/de-intercalation reactions. The occurrence of these different mechanisms of energy storage can be identified (and differentiated from the others) by analysing the CV data at various sweep rates according to equation (3), and can be illustrated by plotting log (i) vs. log (Ѵ) as a function of potential [67,68]:…”

Section: à3mentioning

confidence: 99%

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On the Supercapacitive Behaviour of Anodic Porous WO3-Based Negative Electrodes

Upadhyay

Altomare

Eugénio

et al. 2017

Electrochimica Acta

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Keywords: electrochemical anodization WO 3 nanostructure phosphoric acid supercapacitor energy storage A B S T R A C T Herein we illustrate the functionality as pseudocapacitive material of tungsten trioxide (WO 3 ) nanochannel layers fabricated by electrochemical anodization of W metal in pure hot ortho-phosphoric acid (o-H 3 PO 4 ). These layers are characterized by a defined nanochannel morphology and show remarkable pseudocapacitive behaviour in the negative potential (À0.8-0.5 V) in neutral aqueous electrolyte (1 M Na 2 SO 4 ). The maximum volumetric capacitance of 397 F cm À3 is obtained at 2 A cm À3. The WO 3 nanochannel layers display full capacitance retention (up to 114%) after 3500 charge-discharge cycles performed at 10 A cm À3 . The relatively high capacitance and retention ability are attributed to the high surface area provided by the regular and defined nanochannel morphology. Kinetic analysis of the electrochemical results for the best performing WO 3 structures, i.e., grown by 2 h-long anodization, reveals the occurrence of pseudocapacitance and diffusional controlled processes. Electrochemical impedance spectroscopy measurements show for the same structures a relatively low electrical resistance, which is the plausible cause for the superior electrochemical behaviour compared to the other structures.

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Section: à3mentioning

confidence: 99%

“…Considerable efforts have been made to develop efficient, green, and renewable energy-related technologies, based on the use of e.g. supercapacitors, lithium-ion batteries, solar cells, fuel cells, and photocatalytic and photothermal conversion processes [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

On the Supercapacitive Behaviour of Anodic Porous WO3-Based Negative Electrodes

Upadhyay

Altomare

Eugénio

et al. 2017

Electrochimica Acta

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“…However, because LIBs operate in a limited space, the volumetric capacity (Q vol (mAh cm À3 )), rather than Q gra , is important for evaluating lithium insertion materials [35]. According to references [36][37][38] the volumetric capacity (Q vol ) of the electrode can be calculated as follows:…”

Section: Electrochemical Characterizations Of the I-doped Graphenementioning

confidence: 99%

Iodine doped graphene as anode material for lithium ion battery

Zhan

Zhang

Cao

et al. 2015

Carbon

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“…Carbon nanotubes (CNTs), having high electronic conductivity, good lithium permeability and electrochemical stability, are particularly attractive for LIB applications [12][13][14] . The hybrid nanostructures obtained by incorporating CNTs into Li-storage compounds as novel electrode materials have been developed utilizing the aforementioned attractive properties of CNTs [15][16][17][18][19] .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Cathode Materials Based on Limn2o4/Cnt and Lini0.5mn1.5o4/Cnt Nanocomposites for Lithium – Ion Batteries Application

Trần

et al. 2015

Mat. Res.

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Carbon nanotubes (CNTs) are a promising candidate material for use in lithium batteries due to 1D tubular structure, high electrical, thermal conductivities, and extremely large surface area. In this work, the MWCNTs were purified by dispersion in a mixture of HNO 3 and H 2 SO 4 acids. The oxidized-MWCNTs were used as conducting addition to prepare a nanocomposites as high performance cathode material for Li-ion batteries (LIBs). The spinel cathode materials of LiMn 2 O 4 (LMO), doped spinel LiNi 0.5 Mn 1.5 O 4 (LNMO) were synthesized and characterized via X-rays diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical properties of nanocomposites based on LMO/CNTs and LMNO/CNTs were investigated by cyclic voltammetry (CV) as well as electrochemical impedance spectroscopy (EIS). The EIS measurement indicated that the LMO (LNMO)/CNTs nanocomposites showed lower charge transfer resistance (R ct ) than that of LMO(LNMO)/ Vulcan carbon materials. In addition, the studied nanocomposites cathodes gave a specific capacity of 145 Ah.kg -1 and 120 Ah.kg -1 for LMO/CNTs (10 wt%) and LNMO/CNTs (10 wt%), respectively, measured at a charge/discharge rate of 0.1C.

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Ultrahigh volumetric capacity lithium ion battery anodes with CNT–Si film

Cited by 95 publications

References 43 publications

On the Supercapacitive Behaviour of Anodic Porous WO3-Based Negative Electrodes

On the Supercapacitive Behaviour of Anodic Porous WO3-Based Negative Electrodes

Iodine doped graphene as anode material for lithium ion battery

Fabrication of Cathode Materials Based on Limn2o4/Cnt and Lini0.5mn1.5o4/Cnt Nanocomposites for Lithium – Ion Batteries Application

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