Sandwich–like Structure of Carbon Fluoride/Graphene Oxide/Polyacrylonitrile Cathode for Lithium and Sodium Batteries

Li, Wen; Zhan, Binxin; Shi, Bin; Li, Yong; Guo, Rui; Pei, Haijuan; Xie, Jun

doi:10.1002/celc.201600712

Cited by 12 publications

(11 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The conversion reaction has been extensively studied for several decades as one of the important reactions that can occur in the electrochemical system . The full utilization of multi‐valent redox center is possible with the conversion reaction, thus, much higher capacities can be potentially achieved for conversion‐based electrode materials compared with intercalation compounds .…”

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

(a \cdot n) {Na}^{+} + (a \cdot n) {normale}^{-} + {MX}_{a} \leftrightarrow a {Na}_{n} X + {normalM}^{0}

n {Na}^{+} + n {normale}^{-} + X' (normalSolid) \leftrightarrow {Na}_{n} X

where M is a transition metal (e.g., Fe, Mn, Co, Ni, etc.…”

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

“…Despite the high specific capacity of conversion compounds, their utilization remains challenging because of their large volume change and associated structural degradation during charge/discharge . The intercalation reaction only results in a small volume change without disruption of the structure during charge/discharge.…”

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

“…In addition, these electrodes exhibited improved cycle performance compared with bare CF x electrodes. Further efforts to improve the electrochemical properties by synthesizing highly disordered CF x and sandwich‐like structures composed of CF x , GO, and polyacrylonitrile were introduced in later works …”

Section: Cathode Materials With Conversion Reaction For Na Storagementioning

confidence: 99%

See 3 more Smart Citations

Conversion‐Based Cathode Materials for Rechargeable Sodium Batteries

Kim

Kang

2018

Advanced Energy Materials

View full text Add to dashboard Cite

Conversion‐based electrode materials for rechargeable sodium batteries (RSBs) have received considerable attention because of their potentially higher energy densities than those of conventional intercalation‐based electrode materials. This would overcome generally lower energy densities of RSBs than those of lithium‐ion batteries. However, they often suffer from large volume changes, sluggish Na‐ion kinetics, and large overpotential in their reaction. Intensive research has thus focused on improving the electrochemical performance through a number of approaches, including analyses of the reaction mechanisms during charge/discharge, engineering the electrode materials in terms of their nanostructuring or compositing, and searching for new candidate materials. This review presents an overview of the approaches used to explore conversion electrode materials for RSBs, in particular focusing on those with relative high redox potential that could be possibly used as cathodes, followed by a discussion of the challenges and perspectives involving future research directions for these materials.

show abstract

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

(a \cdot n) {Na}^{+} + (a \cdot n) {normale}^{-} + {MX}_{a} \leftrightarrow a {Na}_{n} X + {normalM}^{0}

n {Na}^{+} + n {normale}^{-} + X' (normalSolid) \leftrightarrow {Na}_{n} X

where M is a transition metal (e.g., Fe, Mn, Co, Ni, etc.…”

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

Section: General Aspects On Conversion Reaction For Na Storagementioning

confidence: 99%

Section: Cathode Materials With Conversion Reaction For Na Storagementioning

confidence: 99%

See 2 more Smart Citations

Conversion‐Based Cathode Materials for Rechargeable Sodium Batteries

Kim

Kang

2018

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…Li/S batteries configuration with GO membrane exhibited a cyclic capacity decay rate of 0.23%/cycle and superb anti‐self‐discharge properties. Similarly, GO network coating the carbon fluorides (CF x ) particles can confine active fluorine during cycles in Na/CF x system, corresponding to the enhanced cycle stability and lifespan …”

Section: Introductionmentioning

confidence: 99%

A Flexible, Binder‐Free Graphene Oxide/Copper Sulfides Film for High‐Performance Sodium Ion Batteries

Wen¹,

Shi²,

Wang³

et al. 2018

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

A flexible, binder-free graphene oxide/copper sulfides (GO/CuS) film with 3D sandwich-like structure and porous architecture is assembled by a vacuum filtration approach for sodium ion batteries. GO sheets in this flexible film-electrode play a key role in enhancing the electrochemical performance. The CuS film-electrode with a thickness of 50 mm delivers an initial discharge capacity of 639.0 mAh g À1 and remains a capacity retention of 81.3% (the second cycle) after 100 cycles at 0.10 C, significantly higher than those of conventional CuS electrode with Al current collector. Furthermore, the flexible, binder-free GO/CuS electrode displays notably improved rate performance, evidencing the potential for wearable energy storage devices.

show abstract

Surface Engineering of Fluorinated Graphene Nanosheets Enables Ultrafast Lithium/Sodium/Potassium Primary Batteries

Luo

Wang

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

Fluorinated carbon (CFx) is considered as a promising cathode material for lithium/sodium/potassium primary batteries with superior theoretical energy density. However, achieving high energy and power densities simultaneously remains a considerable challenge due to the strong covalency of the C‐F bond in the highly fluorinated CFx. Herein, an efficient surface engineering strategy combining surface defluorination and nitrogen doping enables fluorinated graphene nanosheets (DFG‐N) to possess controllable conductive nanolayers and reasonably regulated C‐F bonds. The DFG‐N delivers an unprecedented dual performance for lithium primary batteries with a power density of 77456 W kg−1 and an energy density of 1067 Wh kg−1 at an ultrafast rate of 50 C, which is the highest level reported to date. The DFG‐N also achieved a record power density of 15256 and 17881 W kg−1 at 10 C for sodium and potassium primary batteries, respectively. The characterization results and density functional theory calculations demonstrate that the excellent performance of DFG‐N is attributed to surface engineering strategies that remarkably improve electronic and ionic conductivity without sacrificing the high fluorine content. This work provides a compelling strategy for developing advanced ultrafast primary batteries that combine ultrahigh energy density and power density.This article is protected by copyright. All rights reserved

show abstract

Sandwich–like Structure of Carbon Fluoride/Graphene Oxide/Polyacrylonitrile Cathode for Lithium and Sodium Batteries

Cited by 12 publications

References 42 publications

Conversion‐Based Cathode Materials for Rechargeable Sodium Batteries

Conversion‐Based Cathode Materials for Rechargeable Sodium Batteries

A Flexible, Binder‐Free Graphene Oxide/Copper Sulfides Film for High‐Performance Sodium Ion Batteries

Surface Engineering of Fluorinated Graphene Nanosheets Enables Ultrafast Lithium/Sodium/Potassium Primary Batteries

Contact Info

Product

Resources

About