Nitrogen-doped Carbon Coated Porous Silicon as High Performance Anode Material for Lithium-Ion Batteries

Jeong, Moon Sik; Islam, M. Saif; Du, Hoang-Long; Lee, Yoon-Sung; Sun, Ho-Hyun; Choi, Wonchang; Lee, Joong Kee; Chung, Kyung Yoon; Jung, Hun‐Gi

doi:10.1016/j.electacta.2016.05.080

Cited by 54 publications

(26 citation statements)

References 43 publications

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“…This phenomenon attributes to the doping of nitrogen atoms in the carbon lattice. The similar atom size of carbon and nitrogen atoms is a critical condition for the defects [29,30]. The slightly narrower interplanar spacing corresponds to the small atomic radius of nitrogen.…”

Section: Resultsmentioning

confidence: 98%

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

Zhang

Zhou

Xiao

et al. 2017

Ceramics International

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Section: Resultsmentioning

confidence: 98%

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

Zhang

Zhou

Xiao

et al. 2017

Ceramics International

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“…It should be noted that there are many other functions for the conductive shell in addition to the electron conduction. For example, it can protect the AM from dissolution (such as sulfur), or help to stabilize the solid‐electrolyte‐interphase (SEI) for silicon, etc . To build the final ETN in composite electrodes, core–shell AMs can be either directly sintered, or mixed with polymer binder and/or additional conductive agents.…”

Section: Controlling Etn In Composite Electrodesmentioning

confidence: 99%

“…There are several ways for the fabrication of carbon@AM. The first example is thermolysis . For this strategy, the AMs are first coated by a precursor (e.g., polymers or small organic molecules) in a liquid, then the mixture is treated at high temperatures to carbonize the precursors .…”

Section: Controlling Etn In Composite Electrodesmentioning

confidence: 99%

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Wang

Min

et al. 2018

Advanced Materials

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portable electronics, cell phones, electrical vehicles (EVs), aerospace, etc. For advanced batteries, higher and higher energy density and/or power density, long cycling stability, good device safety, and low-cost are the primary goals. Since the energy density is mainly dependent on the specific capacity and loading level of active materials (AMs), AMs usually dominate the volume and weight inside the batteries. Because of this, tremendous efforts have been focused on high-performance AMs. However, the electrochemical performance of energy storage devices (ESDs) is fundamentally determined by a collective contribution or teamwork of all the components: AMs, electrolyte, separator, conductive agent, binders, etc. More importantly, with the increasing interests on high-capacity AMs (e.g., silicon, sulfur, Li-rich cathode, etc.), it becomes very clear that the "traffic system" (i.e., the charge transport system) plays very critical roles in the performance of the high-capacity AMs. Take silicon anode for example, a durable and flexible conductive network inside the electrode composite has been vital for addressing the big volume change issue. In this case, high-performance binders and conductive agent that can generate advanced conductive network are the keys. [2] In addition, with the increasing interests on EVs and flexible electronics, building a powerful and robust charge transport system inside ESDs is an urgent and critical task to support fast charging/ discharging capability and even flexibility of ESDs. In short, with the fast development of energy storage technologies, EVs, cell phones, etc., there is a critical, urgent, and challenging task on building powerful and durable charge transport system in next-generation advanced ESDs. Charge Transport Inside ESDsThe thriving of big cities highly relies on a powerful traffic system that transports the people, foods, products, etc. Similar to this picture, ESDs are powered by the transportation of charges, including both ions and electrons. As illustrated in Figure 1a, one can analogize the charge transport system and AMs in the electrodes of ESDs to the traffic system and buildings (i.e., host system of people), respectively. This analogy example not only help to explain the relationship between The charge transport system in an energy storage device (ESD) fundamentally controls the electrochemical performance and device safety. As the skeleton of the charge transport system, the "traffic" networks connecting the active materials are primary structural factors controlling the transport of ions/electrons. However, with the development of ESDs, it becomes very critical but challenging to build traffic networks with rational structures and mechanical robustness, which can support high energy density, fast charging and discharging capability, cycle stability, safety, and even device flexibility. This is especially true for ESDs with high-capacity active materials (e.g., sulfur and silicon), which show notable volume change during cycling. Therefore, there is an ur...

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“… anode material method Q r1 (mAh g −1 ) (initial CE) current density QdN (mAh g −1 ) (N) C.R.N (%) ref. CNCC–SPs electrospray 1380.0 0.5 A g −1 1031.0 74.7 [ 70 ] (72.0%) (100) NC@P–Si combined approaches 2357.3 0.8 A g −1 1933.0 82.0 [ 71 ] (84.0%) (100) Si@NC ionic liquid assisted method 2602.0 0.42 A g −1 725.0 27.9 [ 72 ] (75.4%) (100) Si–RGO/NCT solution-mixing and carbonization process 2030.2 0.1 A g −1 892.3 44.0 [ 73 ] (76.2%) (100) …”

Section: Modification Of Silicon–carbon Anode Materialsmentioning

confidence: 99%

Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

Liu¹,

Zhu²,

Pan³

2018

R. Soc. open sci.

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Lithium-ion batteries are widely used in various industries, such as portable electronic devices, mobile phones, new energy car batteries, etc., and show great potential for more demanding applications like electric vehicles. Among advanced anode materials applied to lithium-ion batteries, silicon–carbon anodes have been explored extensively due to their high capacity, good operation potential, environmental friendliness and high abundance. Silicon–carbon anodes have demonstrated great potential as an anode material for lithium-ion batteries because they have perfectly improved the problems that existed in silicon anodes, such as the particle pulverization, shedding and failures of electrochemical performance during lithiation and delithiation. However, there are still some problems, such as low first discharge efficiency, poor conductivity and poor cycling performance, which need to be improved. This paper mainly presents some methods for solving the existing problems of silicon–carbon anode materials through different perspectives.

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Nitrogen-doped Carbon Coated Porous Silicon as High Performance Anode Material for Lithium-Ion Batteries

Cited by 54 publications

References 43 publications

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Solutions for the problems of silicon–carbon anode materials for lithium-ion batteries

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