Comprehensive Enhancement of Nanostructured Lithium-Ion Battery Cathode Materials via Conformal Graphene Dispersion

Chen, Kan Sheng; Xu, Rui; Luu, Norman S.; Secor, Ethan B.; Hamamoto, Koichi; Li, Qianqian; Kim, Soo Jeong; Sangwan, Vinod K.; Balla, Itamar; Guiney, Linda M.; Seo, Jung Woo T.; Yu, Xiankai; Liu, Weiwei; Wu, Jinsong; Wolverton, Chris; Dravid, Vinayak P.; Barnett, Scott A.; Lü, Jun; Amine, Khalil; Hersam, Mark C.

doi:10.1021/acs.nanolett.7b00274

Cited by 84 publications

(60 citation statements)

References 53 publications

(82 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the absolute strain is efficiently mitigated and the structural stability of the material is greatly enhanced 25, 26, 27. In addition, nanoparticles shorten the charge‐diffusion route for both ions and electrons and supply abundant electrochemically active sites 28, 29, 30. The characteristic diffusion time of ions in active electrode materials can be represented as: τ = L 2 / D , where L is the ion diffusion distance, D is the ion diffusion coefficient.…”

Section: Size Control Of Sn Anodesmentioning

confidence: 99%

Metallic Sn‐Based Anode Materials: Application in High‐Performance Lithium‐Ion and Sodium‐Ion Batteries

2017

View full text Add to dashboard Cite

With the fast‐growing demand for green and safe energy sources, rechargeable ion batteries have gradually occupied the major current market of energy storage devices due to their advantages of high capacities, long cycling life, superior rate ability, and so on. Metallic Sn‐based anodes are perceived as one of the most promising alternatives to the conventional graphite anode and have attracted great attention due to the high theoretical capacities of Sn in both lithium‐ion batteries (LIBs) (994 mA h g−1) and sodium‐ion batteries (847 mA h g−1). Though Sony has used Sn–Co–C nanocomposites as its commercial LIB anodes, to develop even better batteries using metallic Sn‐based anodes there are still two main obstacles that must be overcome: poor cycling stability and low coulombic efficiency. In this review, the latest and most outstanding developments in metallic Sn‐based anodes for LIBs and SIBs are summarized. And it covers the modification strategies including size control, alloying, and structure design to effectually improve the electrochemical properties. The superiorities and limitations are analyzed and discussed, aiming to provide an in‐depth understanding of the theoretical works and practical developments of metallic Sn‐based anode materials.

show abstract

Section: Size Control Of Sn Anodesmentioning

confidence: 99%

Metallic Sn‐Based Anode Materials: Application in High‐Performance Lithium‐Ion and Sodium‐Ion Batteries

2017

View full text Add to dashboard Cite

show abstract

“…Electrode Preparation : Binder‐free LMO–graphene electrodes were prepared following a previously established method . The slurry was prepared by dispersing LMO active material (LiMn 2 O 4 , spinel, NEI Corporation) and graphene/EC powder in N ‐methyl‐2‐pyrrolidone (anhydrous, Sigma‐Aldrich) in a 9:1 weight ratio.…”

Section: Methodsmentioning

confidence: 99%

Ion‐Conductive, Viscosity‐Tunable Hexagonal Boron Nitride Nanosheet Inks

Moraes

Hyun

Seo

et al. 2019

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Liquid-phase exfoliation of layered solids holds promise for the scalable production of 2D nanosheets. When combined with suitable solvents and stabilizing polymers, the rheology of the resulting nanosheet dispersions can be tuned for a variety of additive manufacturing methods. While significant progress is made in the development of electrically conductive nanosheet inks, minimal effort is applied to ion-conductive nanosheet inks despite their central role in energy storage applications. Here, the formulation of viscosity-tunable hexagonal boron nitride (hBN) inks compatible with a wide range of printing methods that span the spectrum from low-viscosity inkjet printing to high-viscosity blade coating is demonstrated. The inks are prepared by liquid-phase exfoliation with ethyl cellulose as the polymer dispersant and stabilizer. Thermal annealing of the printed structures volatilizes the polymer, resulting in a porous microstructure and the formation of a nanoscale carbonaceous coating on the hBN nanosheets, which promotes high wettability to battery electrolytes. The final result is a printed hBN nanosheet film that possesses high ionic conductivity, chemical and thermal stability, and electrically insulating character, which are ideal characteristics for printable battery components such as separators. Indeed, lithium-ion battery cells based on printed hBN separators reveal enhanced electrochemical performance that exceeds commercial polymer separators.

show abstract

“…All of these electrical properties contribute to the best conductivity of graphene. Graphene is expected to be widely used in different kinds of fields, such as energy storage, nanotechnology, electronic devices, biomedical materials, and so forth [71,77,78].…”

Section: Structure Properties and Synthesis Of Graphenementioning

confidence: 99%

Novel Carbon Materials in the Cathode Formulation for High Rate Rechargeable Hybrid Aqueous Batteries

Zhu¹,

Hoang²,

Chen³

2017

Energies

View full text Add to dashboard Cite

Novel carbon materials, carbon nanotubes (CNTs) and porous graphene (PG), were exploited and used as conductive additives to improve the rate performance of LiMn2O4 cathode for the rechargeable aqueous Zn/LiMn2O4 battery, namely the rechargeable hybrid aqueous battery (ReHAB). Thanks to the long-range conductivity and stable conductive network provided by CNTs, the rate and cycling performances of LiMn2O4 cathode in ReHAB are highly improved—up to about 100 mAh·g−1 capacity is observed at 10 C (1 C = 120 mAh·g−1). Except for CNTs, porous graphene (PG) with a high surface area, an abundant porous structure, and an excellent electrical conductivity facilitates the transportation of Li ions and electrons, which can also obviously enhance the rate capability of the ReHAB. This is important because the ReHAB could be charged/discharged in a few minutes, and this leads to potential application of the ReHAB in automobile industry.

show abstract

Comprehensive Enhancement of Nanostructured Lithium-Ion Battery Cathode Materials via Conformal Graphene Dispersion

Cited by 84 publications

References 53 publications

Metallic Sn‐Based Anode Materials: Application in High‐Performance Lithium‐Ion and Sodium‐Ion Batteries

Metallic Sn‐Based Anode Materials: Application in High‐Performance Lithium‐Ion and Sodium‐Ion Batteries

Ion‐Conductive, Viscosity‐Tunable Hexagonal Boron Nitride Nanosheet Inks

Novel Carbon Materials in the Cathode Formulation for High Rate Rechargeable Hybrid Aqueous Batteries

Contact Info

Product

Resources

About