Carbon‐Coated Single‐Crystal LiMn<sub>2</sub>O<sub>4</sub> Nanoparticle Clusters as Cathode Material for High‐Energy and High‐Power Lithium‐Ion Batteries

Lee, Sanghan; Cho, Yong Hyun; Song, Hyun‐Kon; Lee, Kyu‐Tae; Cho, Jaephil

doi:10.1002/anie.201203581

Cited by 319 publications

(189 citation statements)

References 40 publications

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“…Therefore, the micrometer-size particles consisting of aggregated nanometer-size particles, plates or wires is the ideal morphology for the electrode materials for lithium ion batteries with high energy densities at high C-rates [22].…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Chou

Zhou

et al. 2014

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Chou

Zhou

et al. 2014

Journal of Power Sources

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“…Based on these strategies, electrodes with a highly conductive pathway for electrons, a short ion diffusion length, and a fast transport channel for the ion flux can be fabricated for fast charge and discharge. A series of electrochemical active materials (4,(15)(16)(17)(18) and three-dimensional (3D) hybrid electrodes (5, 14) have been recently fabricated to assemble rechargeable batteries with high charge and discharge rates. For example, Braun et al (5) recently fabricated a macroporous nickel network for battery electrodes with ultrafast charge and discharge rates, and 76% of the specific capacity was retained when discharged at 185 C. However, these batteries are based on a complicated electrode package and rigid electrode structures with metals as current collectors, which makes the devices less flexible, and they also have a low energy density.…”

mentioning

confidence: 99%

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Chen

Ren

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

744

494

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There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li 4 Ti 5 O 12 and LiFePO 4 , for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li 4 Ti 5 O 12 / graphene foam electrode shows a high rate up to 200 C, equivalent to a full discharge in 18 s. Using them, we demonstrate a thin, lightweight, and flexible full lithium ion battery with a high-rate performance and energy density that can be repeatedly bent to a radius of 5 mm without structural failure and performance loss.flexible device | full battery T he development of next-generation flexible electronics (1), such as soft, portable electronic products, roll-up displays, wearable devices, implantable biomedical devices, and conformable health-monitoring electronic skin, requires power sources that are flexible (2, 3). Similar to conventional energy storage devices, flexible power sources with high capacity and rate performance that enable electronic devices to be continuously used for a long time and fully charged in a very short time are very important for applications of high-performance flexible electronics (4-7). Lithium ion batteries (LIBs) have a high capacity but usually suffer from a low charge/discharge rate compared with another important electrochemical storage device, supercapacitors. Therefore, it is highly desired to fabricate a flexible electrochemical energy storage system with a supercapacitor-like fast charge/discharge rate and battery-like high capacity. However, the fabrication of such an energy storage device remains a great challenge owing to the lack of reliable materials that combine superior electron and ion conductivity, robust mechanical flexibility, and excellent corrosion resistance in electrochemical environments.Using nano-sized materials to prepare electrodes is one of the most promising routes toward flexible batteries. Metal oxide nanowires (8, 9) and carbon nanomaterials such as carbon nanotubes (6, 10-12) and graphene paper (13) have been recently demonstrated for use in flexible LIBs. However, electron transport in these electrodes is slow because of the relatively low quality of nanomaterials (such as chemically derived graphene) and/or high junction contact resistance between them. As a consequence, only a moderate charge/discharge rate has been obtained in these flexible batteries. It is generally believed that the charge/discharge rate of a LIB depends critically on the migration rate of lithium ions and electrons through the electrolyte and bulk electrodes into active electrode materials. Strategies to inc...

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“…The LiMn 2 O 4 nanoparticles were synthesized according to preexisting procedures [12,18]. The carbon coating was prepared using a polydopamine layer formed on the surface of the LiMn 2 O 4 nanoparticles through a carbonization process during heattreatment.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, the rapid development of electric vehicles and energy storage systems has increased the demand for advanced and cheap lithium-ion batteries [1][2][3][4][5][6][7]. The development of highperformance cathode materials is an important research topic for enhancing the electrochemical properties of lithium-ion batteries [8][9][10][11][12][13]. Recently, manganese-based spinels (LiMn 2 O 4 ) received attention because of their low cost and safety advantages [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Performance of Carbon Coated LiMn₂O₄Nanoparticles using a New Carbon Source

Park¹,

Park²

2016

Journal of Electrochemical Science and Technology

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The electrochemical performance of carbon-coated LiMn 2 O 4 nanoparticles was reported. The polydopamine layer was introduced as a new organic carbon source. The carbon layer was homogeneously coated onto the surface of the LiMn 2 O 4 nanoparticles because the polymerization process from the dopamine solution (in a buffer solution, pH 8.5) easily and uniformly formed a polydopamine layer. The phase integrity of LiMn 2 O 4 deteriorated during the carbon-coating process due to oxygen loss, although the main structure was maintained. The carbon-coated sample led to improved rate capability because of the effect of the conductive carbon layer. Moreover, the carbon coating also enhanced the cyclic performance. This indicates that the carbon layer may suppress unwanted side reactions with the electrolytes and compensate for the low electronic conductivity of the pristine LiMn 2 O 4 .

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Carbon‐Coated Single‐Crystal LiMn₂O₄ Nanoparticle Clusters as Cathode Material for High‐Energy and High‐Power Lithium‐Ion Batteries

Cited by 319 publications

References 40 publications

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Electrochemical Performance of Carbon Coated LiMn₂O₄Nanoparticles using a New Carbon Source

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Carbon‐Coated Single‐Crystal LiMn2O4 Nanoparticle Clusters as Cathode Material for High‐Energy and High‐Power Lithium‐Ion Batteries

Cited by 319 publications

References 40 publications

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Three-dimensional-network Li3V2(PO4)3/C composite as high rate lithium ion battery cathode material and its compatibility with ionic liquid electrolytes

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Electrochemical Performance of Carbon Coated LiMn2O4Nanoparticles using a New Carbon Source

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Carbon‐Coated Single‐Crystal LiMn₂O₄ Nanoparticle Clusters as Cathode Material for High‐Energy and High‐Power Lithium‐Ion Batteries

Electrochemical Performance of Carbon Coated LiMn₂O₄Nanoparticles using a New Carbon Source