Engineering nanostructured electrodes and fabrication of film electrodes for efficient lithium ion intercalation

Liu, Dawei; Cao, Guozhong

doi:10.1039/b922656g

Cited by 247 publications

(192 citation statements)

References 259 publications

(226 reference statements)

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“…These include pre-conditioning of the carbon material or variation in electrolyte compositions (including additives), for example. [22][23][24][25][26][27][28][29] Studies by Lu and Chung on pitch based carbon materials suggest that the irreversible capacity can be reduced by heat treatment under reductive H 2 atmosphere, for example. 30 A comprehensive study on the effect of surface treatment and screening of other possible electrolyte compositions is, however, outside the scope of this manuscript.…”

Section: Broader Contextmentioning

confidence: 99%

Room-temperature sodium-ion batteries: Improving the rate capability of carbon anode materials by templating strategies

Wenzel

Hara

Janek

et al. 2011

Energy Environ. Sci.

511

362

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Current kinetic limitations of carbon anode materials in sodium-ion batteries can be effectively tackled by using tailor-made carbon materials with hierarchical porosity prepared via the nanocasting route. Capacities exceeding 100 mA h g À1 at C/5 are found while exhibiting excellent rate capability and reasonable cycle life.The development of rechargeable batteries as energy storage devices is a key issue for many future applications. Lithium is the key element utilized, but its abundance and geographical distribution are a matter of controversial debate. Sodium based batteries could be an attractive alternative, and the high temperature sodium/sulfur battery operating between 310 and 350 C has been already commercialized for stationary applications. 1,2 Also all solid-state concepts operating at elevated temperatures using polymer electrolytes have been proposed. 3,4 To date, however, no suitable (combinations of) electrode materials exist that allow satisfying performance at room temperature exists, even though the chemistry of a Na-ion battery could be very similar to its Li-ion battery counterpart. Recently, several studies on possible cathode materials have been published, 5-9 but much less has been reported on potential anode materials.Graphite, the standard anode material in current lithium-ion batteries, is not suited for a sodium based system, as Na hardly forms staged intercalation compounds with graphite. 10 This is different from non-graphitic carbons and it is suggested that the storage mechanisms for Na and Li are similar, although the capacity is smaller in the case of sodium. 11 Several types of non-graphitic carbon materials have been tested and capacities between 100 and 300 mA h g À1 under differing conditions were found. 11-16 Although these capacities are promising, the cells were only cycled for a few times and, more importantly, could be only obtained at extremely low currents (typically C-rates between C/70 and C/80) or at elevated temperatures ($60 C), which indicates very sluggish kinetics for the sodium storage process (Table S1 †). Thus alternative carbon materials are needed in order to achieve satisfying performance at room temperature and at higher currents.For lithium insertion, it is known that fast kinetics and high capacity can be achieved by introducing nanoporosity and a hierarchical pore system into the anode. 17 Such systems are accessible via the nanocasting route, utilizing porous silica materials as templates. 18 In this work we show as a proof of principle that this concept is also applicable to sodium and that high capacities can be achieved at room temperature at high currents (e.g. C-rate of C/5, i.e. 15 times faster than C/75), while also exhibiting long cycling stability. The outstanding performance of the templated carbon is illustrated by comparing with several commercially available porous carbon materials and non-porous graphite as reference. Table 1 summarizes the surface areas and pore volumes of the different carbon materials used. The commercial reference ...

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Section: Broader Contextmentioning

confidence: 99%

Room-temperature sodium-ion batteries: Improving the rate capability of carbon anode materials by templating strategies

Wenzel

Hara

Janek

et al. 2011

Energy Environ. Sci.

511

362

View full text Add to dashboard Cite

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“…Lithium ion battery (LIB) technology has attracted great attention as an alternative energy source since the introduction of the first commercial LIB in 1991 [1][2][3]. LIBs have high energy/power density, long lifespan, and a wide range of modern applications, from portable devices to electric vehicles (EV).…”

Section: Introductionmentioning

confidence: 99%

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Choi

Choy²

2016

Electrochimica Acta

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In this article, a novel anode material with high electrochemical performance, made of elements abundant on the Earth, is reported for use in lithium ion batteries. A chemically synthesised material (SiO 2 /ZrO 2 ) containing Si-O-Zr bonds, exhibits as much as 2.1 times better electrochemical performance at the 10 th cycle than a physically mixed material (SiO 2 +ZrO 2 ) of the same elements. When compared to synthesized SiO 2 or conventional graphite-based electrodes, the SiO 2 /ZrO 2 anode shows superiorcapability and cycling performance. This superior performance is ascribed to the effect of ternary compounds, which contributes not only to increasing the packing density, but also to creating the Si-O-Zr bond that makes additional reactions between SiO 2 /ZrO 2 and lithium ions possible. The Si-OZr bond also contributes to improved conductivity for SSZ and provides facile paths for charge transfer at the electrode/electrolyte interface. Therefore, the overall internal resistance in a battery would be decreased and better performance could thus be obtained, with this type of anode. In every result, the positive influence of the Si-O-Zr bonds in the anode of a lithium ion battery was confirmed.

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“…Because of their environmental friendliness, large energy density, high operating voltage, and long cycling lifetime lithium-ion batteries (LIBs) have become one of the most heavily employed mobile energy sources in today's world [1,2]. Recently, consumer demand has been driving research efforts on small, thin, lightweight, and bendable LIBs to meet the various design and power needs of modern flexible electronic devices, such as roll-up displays, active radio-frequency identification tags, integrated circuit smart cards and implantable medical devices [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

Wang

Sun

et al. 2014

J. Mater. Chem. A

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Paper-like free-standing germanium (Ge) and single-walled carbon nanotube (SWCNT) composite anodes were synthesized by the vacuum filtration of Ge/SWCNT composites, which were prepared by a facile aqueous-based method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Electrochemical measurements demonstrate that the Ge/ SWCNT composite paper anode with the weight percentage of 32% Ge delivered a specific discharge capacity of 417 mA h g−1 after 40 cycles at a current density of 25 mA g−1, 117% higher than the pure SWCNT paper anode. The SWCNTs not only function as a flexible mechanical support for strain release, but also provide excellent electrically conducting channels, while the nanosized Ge particles contribute to improving the discharge capacity of the paper anode. Paper-like free-standing germanium (Ge) and single-walled carbon nanotube (SWCNT) composite anodes were synthesized by the vacuum filtration of Ge/SWCNT composites, which were prepared by a facile aqueous-based method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. Electrochemical measurements demonstrate that the Ge/SWCNT composite paper anode with the weight percentage of 32% Ge delivered a specific discharge capacity of 417 mAh g -1 after 40 cycles at a current density of 25 mA g -1 , 117% higher than the pure SWCNT paper anode. The SWCNTs not only function as a flexible mechanical support for strain release, but also provide excellent electrically conducting channels, while the nanosized Ge contributes to improving the discharge capacity of the paper anode.

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Engineering nanostructured electrodes and fabrication of film electrodes for efficient lithium ion intercalation

Cited by 247 publications

References 259 publications

Room-temperature sodium-ion batteries: Improving the rate capability of carbon anode materials by templating strategies

Room-temperature sodium-ion batteries: Improving the rate capability of carbon anode materials by templating strategies

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

A germanium/single-walled carbon nanotube composite paper as a free-standing anode for lithium-ion batteries

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