Synthesis and Electrochemical Characteristics of Spherical Li4Ti5O12/CNT Composite Materials for Hybrid Capacitors

Yang, Joeng Jin; Kim, Yu Ri; Jeong, Moon Gook; Yuk, Yong Jae; Kim, Han Joo; Park, Soo Gil

doi:10.5229/jecst.2015.6.2.59

Cited by 6 publications

(2 citation statements)

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“…Electrochemical capacitors can be classified into three main groups: electrical double-layer capacitors (EDLC); pseudo-capacitors; and hybrid/asymmetric capacitors [3]. During the past few years, considerable attention has been paid to lithium-ion capacitors (LICs) which are hybrid devices composed of LIBs-type anode and supercapacitors (SCs)-type cathode [4,5,6,7,8]. It is well-known that LIBs, compared to SCs, possess a relatively high energy density, but limited power density and poor cycle performance, because of their different energy storage mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, extensive studies have been undertaken to prepare excellent electrode materials. As for the battery-type anode of LICs, various intercalation materials have been discussed, such as carbonaceous materials [12,13,14,15,16], titanium based compounds [7,17], and manganese oxides [18,19]. Among these compounds, graphite is still widely and commercially used in LICs because of its low lithium-ion intercalation potential (near 0.1 V vs. Li + /Li), high theory capacity (372 mAh·g −1 for LiC 6 ) and low cost.…”

Section: Introductionmentioning

confidence: 99%

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A High Performance Lithium-Ion Capacitor with Both Electrodes Prepared from Sri Lanka Graphite Ore

Gao

Zhan

et al. 2017

Materials

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The natural Sri Lanka graphite (vein graphite) is widely-used as anode material for lithium-ion batteries (LIBs), due to its high crystallinity and low cost. In this work, graphitic porous carbon (GPC) and high-purity vein graphite (PVG) were prepared from Sri Lanka graphite ore by KOH activation, and high temperature purification, respectively. Furthermore, a lithium-ion capacitor (LIC) is fabricated with GPC as cathode, and PVG as anode. The assembled GPC//PVG LIC shows a notable electrochemical performance with a maximum energy density of 86 W·h·kg−1 at 150 W·kg−1, and 48 W·h·kg−1 at a high-power density of 7.4 kW·kg−1. This high-performance LIC based on PVG and GPC is believed to be promising for practical applications, due to its low-cost raw materials and industrially feasible production.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A High Performance Lithium-Ion Capacitor with Both Electrodes Prepared from Sri Lanka Graphite Ore

Gao

Zhan

et al. 2017

Materials

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Electrode Materials, Electrolytes, and Challenges in Nonaqueous Lithium‐Ion Capacitors

et al. 2018

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Among the various energy-storage systems, lithium-ion capacitors (LICs) are receiving intensive attention due to their high energy density, high power density, long lifetime, and good stability. As a hybrid of lithium-ion batteries and supercapacitors, LICs are composed of a battery-type electrode and a capacitor-type electrode and can potentially combine the advantages of the high energy density of batteries and the large power density of capacitors. Here, the working principle of LICs is discussed, and the recent advances in LIC electrode materials, particularly activated carbon and lithium titanate, as well as in electrolyte development are reviewed. The charge-storage mechanisms for intercalative pseudocapacitive behavior, battery behavior, and conventional pseudocapacitive behavior are classified and compared. Finally, the prospects and challenges associated with LICs are discussed. The overall aim is to provide deep insights into the LIC field for continuing research and development of second-generation energy-storage technologies.

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Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

Lian

Yang

Wang

et al. 2020

Adv Energy and Sustain Res

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In various energy storage devices, the development and research of electrode materials has always been a key factor. Nb‐based materials are one choice of energy storage materials because of the good ion‐diffusion channels and high theoretical capacity. More importantly, their advantages, such as safe potential range, high structural stability, and highly reversible redox reaction with small strain, are conducive to efficient, safe, and stable energy storage development. Based on aforementioned superiority, much of the research is to further optimize performance of Nb‐based materials by unique nano‐morphology design, lattice regulation, and functional additives composition, showing good electrochemical performance in many kinds of devices. This review mainly introduces the classification of Nb‐based materials used for energy storage, their application in different battery systems, and common optimization methods. Accordingly, the deficiencies and prospects of Nb‐based materials are also discussed in detail.

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Synthesis and Electrochemical Characteristics of Spherical Li₄Ti₅O₁₂/CNT Composite Materials for Hybrid Capacitors

Cited by 6 publications

References 20 publications

A High Performance Lithium-Ion Capacitor with Both Electrodes Prepared from Sri Lanka Graphite Ore

A High Performance Lithium-Ion Capacitor with Both Electrodes Prepared from Sri Lanka Graphite Ore

Electrode Materials, Electrolytes, and Challenges in Nonaqueous Lithium‐Ion Capacitors

Optimization Design and Application of Niobium‐Based Materials in Electrochemical Energy Storage

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