Role of carbon host lattices in Li-ion intercalation/de-intercalation processes

Noel, M.; Suryanarayanan, V.

doi:10.1016/s0378-7753(02)00308-7

Cited by 170 publications

(100 citation statements)

References 122 publications

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“…However, such materials usually exhibit evident volumetric changes during charge/discharge processes, with a large irreversible capacity loss compared to carbonaceous materials [19,20]. Therefore, more efforts are made to explore suitable carbonaceous materials for high-capacity anodes.…”

Section: Introductionmentioning

confidence: 99%

Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries

Xiang

Zhou

et al. 2016

Electrochimica Acta

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-dreg-derived carbon materials used as superior anode material for lithium-ion batteries, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2016.10.202 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. 3. The KOH-activated sample demonstrated enhanced electrochemical performance due to its high surface area and abundant mesoporous structure. Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries AbstractThe structures of modified carbons from bean dregs were regulated via graphitization treatment and chemical activation. The microstructure and electrochemical performance were studied using X-ray diffraction, Raman spectrometer, SEM and TEM techniques. The electrochemical performance was investigated using electrochemical methods. After heat-treatment at 2800 O C, the obtained BDC-2800 possessed a high degree of graphitization and showed an outstanding cycling performance, delivering capacity decay from 423 to 396 mAh g -1 at 0.1 C after 100 cycles. The chemical-treated carbons also demonstrated enhanced electrochemical performance, especially for the KOH-treated sample. The BDC-K displayed superior specific charge capacity of 801 mAh g -1 at 0.1 C, and showed an impressive rate capability of 643 mAh g -1 at 1 C. In addition, this sample delivered capacity retention of 94%after 500 cycles at 1 C. This good electrochemical performance was mainly due to its high surface area and abundant mesoporous structure.

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Section: Introductionmentioning

confidence: 99%

Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries

Xiang

Zhou

et al. 2016

Electrochimica Acta

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“…1). Враховуючи те, що для електродних матеріалів на основі вуглецю (С), кремнію (Si) та оксиду кремнію (SiO) основні електрохімічні процеси, що пов'язані із впровадженням йонів літію в їх структуру, відбуваються при потенціалах, нижчих за 1 В відносно літієвого електроду [32,33] Проаналізуємо, які зміни відбуваються в досліджуваній електрохімічній системі під час першого розряду згідно методу спектроскопії електродного імпедансу. Даний метод базується на класичному методі передавальних функцій, згідно якого на вхід досліджуваної системи подається синусоїдальний сигнал малої амплітуди ( порядку 5 ÷ 35 мВ), а на виході знімається видозмінений сигнал [34].…”

Section: результати експерименту та їх обговоренняunclassified

The Current Formation Processes in Lithium Power Sources with SiO2 – C Composite Cathode

Myronyuk

Sachko

Mandzyuk

2015

PCSS

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Струмоутворюючі процеси в літієвих джерелах струму з композиційним катодом SiO 2 -C ДВНЗ "Прикарпатський національний університет імені Василя Стефаника", вул. Шевченка, 57, Івано-Франківськ, 76018, Україна, mandzyuk_vova@ukr.net У роботі, використовуючи методи гальваностатичного циклювання, циклічної вольтамперометрії та імпедансної спектроскопії, досліджений процес струмоутворення в літієвому джерелі струму (ЛДС) з композиційним катодом SiO 2 -22% C. Встановлено, що при розрядженні джерела в режимі С/20 його питома ємність становить 1757 мА•год/г. У циклах розрядження/зарядження ЛДС відбувається різкий спад питомої ємності (необоротна ємність після першого циклу перевищує 95 %) внаслідок утворення поверхневого твердотільного шару складу (ПТШ) складу LiF та сполуки Li х SiO 2 , в якій літій при зарядженні джерела не окислюється до йонного стану. З'ясовано, що впровадження в катодний матеріал йонів літію до значення х = 1,8 зумовлює зменшення їх коефіцієнта дифузії на 4 порядки (D Li = 2,2•10 -14 ÷ 2,1•10 -18 см 2 /с).Ключові слова: композит SiO 2 -C, літієве джерело струму, питома ємність, коефіцієнт дифузії.Стаття поступила до редакції 08.03.2015; прийнята до друку 15.06.2015.

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“…However, there are a variety of non-graphitic materials depending on various sources and treatments used to generate them [115]. It is therefore very difficult to provide the specific properties of non-graphitic carbon.…”

Section: ) Carbonmentioning

confidence: 99%

“…In addition, the porous polymer should be able to accommodate tin precursors that will ultimately yield Sn/C nanocomposite after pyrolysis. Several researchers have studied the use of phenolic resins to generate carbonaceous materials for used as anode [56][57][58], and have claimed that the electrochemical properties such as irreversible loss can be controlled by appropriate heat-treatments. In this study, cross-linked polystyrene (PS)-based resin material has been used for the synthesis of carbon matrix component since cyclic carbon ring structure in the PS will form a structure similar to graphite upon pyrolysis and also the hydrogen content in the PS-resin is much less than PMAN, which could result in a lower irreversible capacity loss [59].…”

Section: Electrochemical Characteristics Of the Sn/c Nanocompositesmentioning

confidence: 99%

Synthesis, Structure And Properties of Electrochemically Active Nanocomposites

Kim¹

2003

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. AbstractThe need for miniaturization of high-speed and high-power devices to meet consumer demand for easy access and portability has placed stringent demands on the energy requirements. There is therefore a need for high-energy density lightweight energy storage systems to meet these challenging demands of portable devices. The Liion battery since its commercialization by Sony in 1990 is still the major choice of rechargeable energy source for portable consumer electronic devices such as camcorders, laptops and cellular phones. Since 1990 however, the materials systems used in Li-ion batteries have considerably matured. The area of cathodes has witnessed considerable research activity and a number of systems have been identified with potential capacities for use in high-energy systems. In the area of anodes however, graphite still appears to be the material of choice. There is therefore a need to identify alternative electrochemically active anode systems better than carbon that could be competitive with existing and advanced cathode systems of the future while at the same time meeting the challenges posed by high-energy devices.Several metals are known to react with lithium to form useful anode materials exhibiting high capacity for Li-ion battery application. However, the cycle life of these materials is generally poor since the large volume changes (≅ 300~600 %) caused by the reaction of lithium with these metals inevitably leads to decrepitation, cracking and iii Tin-based nanocomposites on the other hand, have been synthesized by pyrolyzing the precursors generated by the infiltration of organotin compounds such as tetraethyl tin into mechanically milled PS-resin. The Sn/C electrodes exhibit a promising initial discharge capacity of ~480mAh/g that lowers to a value of 460 mAh/g after 30 cycles. The nanocomposite consists of spherical nano-particles of tin (~200nm) dispersed in amorphous carbon particles determined by TEM analysis. Results of the studies so far have shown that Sn and Si-based nanocomposites appear to be quite promising anode systems for Li-ion application.iv

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Role of carbon host lattices in Li-ion intercalation/de-intercalation processes

Cited by 170 publications

References 122 publications

Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries

Bean-dreg-derived carbon materials used as superior anode material for lithium-ion batteries

The Current Formation Processes in Lithium Power Sources with SiO2 – C Composite Cathode

Synthesis, Structure And Properties of Electrochemically Active Nanocomposites

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