A novel high-performance cylindrical hybrid supercapacitor with Li 4−x Na x Ti 5 O 12 /activated carbon electrodes

Lee, Seung Hwan; Kim, Hongki; Yun, Ye-Sol; Yoon, Jung Rag; Lee, Sung-Gap; Lee, Young-Hie

doi:10.1016/j.ijhydene.2014.05.072

Cited by 41 publications

(16 citation statements)

References 24 publications

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“…Because the replacement of Li + ions by Cr 3+ and Mg 2+ dopants led to mixed‐valence states of Ti 4+ /Ti 3+ , the Mg and Cr dopants improved the electrical conductivity of Li 4 Ti 5 O 12 . Lee et al indicated that an appropriate sodium doping level can enhance the electrochemical performance due to the smaller grain size and improved ionic conductivity of the Na‐doped material. Furthermore, Ti 3+ self‐doped Li 4 Ti 5 O 12 was also investigated …”

Section: The Anodementioning

confidence: 99%

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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Section: The Anodementioning

confidence: 99%

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

et al. 2018

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“…For example, Lee et al . have fabricated Li 4‐x Na x Ti 5 O 12 by a typical solid‐state reaction . In their study, a larger open channel in lattice structure of Na‐doped Li 4 Ti 5 O 12 can be achieved just because of the radius of Li + (0.76 Å) is smaller than that of Na + (1.02 Å).…”

Section: Modification Process Of Li4ti5o12mentioning

confidence: 99%

Li₄Ti₅O₁₂ Anode: Structural Design from Material to Electrode and the Construction of Energy Storage Devices

Chen

et al. 2017

The Chemical Record

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Spinel Li Ti O , known as a zero-strain material, is capable to be a competent anode material for promising applications in state-of-art electrochemical energy storage devices (EESDs). Compared with commercial graphite, spinel Li Ti O offers a high operating potential of ∼1.55 V vs Li/Li , negligible volume expansion during Li intercalation process and excellent thermal stability, leading to high safety and favorable cyclability. Despite the merits of Li Ti O been presented, there still remains the issue of Li Ti O suffering from poor electronic conductivity, manifesting disadvantageous rate performance. Typically, a material modification process of Li Ti O will be proposed to overcome such an issue. However, the previous reports have made few investigations and achievements to analyze the subsequent processes after a material modification process. In this review, we attempt to put considerable interest in complete device design and assembly process with its material structure design (or modification process), electrode structure design and device construction design. Moreover, we have systematically concluded a series of representative design schemes, which can be divided into three major categories involving: (1) nanostructures design, conductive material coating process and doping process on material level; (2) self-supporting or flexible electrode structure design on electrode level; (3) rational assembling of lithium ion full cell or lithium ion capacitor on device level. We believe that these rational designs can give an advanced performance for Li Ti O -based energy storage device and deliver a deep inspiration.

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“…It gives a positive effect on cycle performance of hybrid supercapacitor, which is one of the most important factor, despite its relatively low theoretical capacity. Also, inexpensive, easy to prepare and stable reversible capacity of Li 4 Ti 5 O 12 are tremendous advantages for actual product [7,8]. When Li þ ions intercalate into the Li 4 Ti 5 O 12 structure, the phases change to rock salt Li 7 Ti 5 O 12 phases.…”

Section: Introductionmentioning

confidence: 99%

“…When Li þ ions intercalate into the Li 4 Ti 5 O 12 structure, the phases change to rock salt Li 7 Ti 5 O 12 phases. The chargeedischarge processes can be expressed by the following equation [8]:…”

Section: Introductionmentioning

confidence: 99%

Enhanced electrochemical performances of cylindrical hybrid supercapacitors using activated carbon/ Li 4-x M x Ti 5-y N y O 12 (M = Na, N = V, Mn) electrodes

Kim

Lee

2016

Energy

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A novel high-performance cylindrical hybrid supercapacitor with Li 4−x Na x Ti 5 O 12 /activated carbon electrodes

Cited by 41 publications

References 24 publications

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

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

Li₄Ti₅O₁₂ Anode: Structural Design from Material to Electrode and the Construction of Energy Storage Devices

Enhanced electrochemical performances of cylindrical hybrid supercapacitors using activated carbon/ Li 4-x M x Ti 5-y N y O 12 (M = Na, N = V, Mn) electrodes

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A novel high-performance cylindrical hybrid supercapacitor with Li 4−x Na x Ti 5 O 12 /activated carbon electrodes

Cited by 41 publications

References 24 publications

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

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

Li4Ti5O12 Anode: Structural Design from Material to Electrode and the Construction of Energy Storage Devices

Enhanced electrochemical performances of cylindrical hybrid supercapacitors using activated carbon/ Li 4-x M x Ti 5-y N y O 12 (M = Na, N = V, Mn) electrodes

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Li₄Ti₅O₁₂ Anode: Structural Design from Material to Electrode and the Construction of Energy Storage Devices