Polypyrrole-coated LiCoO 2 nanocomposite with enhanced electrochemical properties at high voltage for lithium-ion batteries

Cao, Jingchao; Hu, Guorong; Peng, Zhongdong; Du, Ke; Cao, Yanbing

doi:10.1016/j.jpowsour.2015.01.174

Cited by 80 publications

(33 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…104 As a biomaterial, PPY presents several advantages including biocompatibility, chemical stability in air and water, and reasonably high electrical conductivity under physiological conditions. 68 Polypyrrole has been utilized in a diverse array of technology development such as high-voltage batteries, 105 supercapacitor electrodes, 106–109 and biosensors, 110, 111 and in drug delivery systems. 112 The use of PPY derived scaffold materials in neural tissue engineering is extensive.…”

Section: Conductive Polymers For Nerve Growth Conduitsmentioning

confidence: 99%

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Anderson

Shelke

Manoukian

et al. 2015

Crit Rev Biomed Eng

View full text Add to dashboard Cite

Treatment of large peripheral nerve damages ranges from the use of an autologous nerve graft to a synthetic nerve growth conduit. Biological grafts, in spite of many merits, show several limitations in terms of availability and donor site morbidity, and outcomes are suboptimal due to fascicle mismatch, scarring, and fibrosis. Tissue engineered nerve graft substitutes utilize polymeric conduits in conjunction with cues both chemical and physical, cells alone and or in combination. The chemical and physical cues delivered through polymeric conduits play an important role and drive tissue regeneration. Electrical stimulation (ES) has been applied toward the repair and regeneration of various tissues such as muscle, tendon, nerve, and articular tissue both in laboratory and clinical settings. The underlying mechanisms that regulate cellular activities such as cell adhesion, proliferation, cell migration, protein production, and tissue regeneration following ES is not fully understood. Polymeric constructs that can carry the electrical stimulation along the length of the scaffold have been developed and characterized for possible nerve regeneration applications. We discuss the use of electrically conductive polymers and associated cell interaction, biocompatibility, tissue regeneration, and recent basic research for nerve regeneration. In conclusion, a multifunctional combinatorial device comprised of biomaterial, structural, functional, cellular, and molecular aspects may be the best way forward for effective peripheral nerve regeneration.

show abstract

Section: Conductive Polymers For Nerve Growth Conduitsmentioning

confidence: 99%

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Anderson

Shelke

Manoukian

et al. 2015

Crit Rev Biomed Eng

View full text Add to dashboard Cite

show abstract

“…Moreover, the double bonds have extra electrons which are easy to move through the polymer chain, inducing the enhanced electronic conductivity . Cao et al . found that PPy‐coated LiCoO 2 delivered an excellent rate capability and significantly improved cycle stability after 170 cycles.…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Impact of the Polypyrrole Coating Layer Thickness on the Electrochemical Performances of LiNi_0.5Co_0.2Mn_0.3O₂ in Li–Ion Battery

Zhang

et al. 2019

ChemistrySelect

View full text Add to dashboard Cite

Coating polypyrrole (PPy) on the surface of cathode materials could effectively enhance the electrochemical performances of lithium ion batteries (LIBs). The effect of the coated PPy layer thickness on the electrochemical performance, however, has not been well revealed. In this work, we study experimentally the impact of the PPy coating layer thickness on the electrochemical performance of the cathode materials in LIBs. The surface‐coated LiNi0.5Co0.2Mn0.3O2 (NCM) with different PPy layer thickness was synthesized by in situ growing PPy on the surface of NCM. When these coated‐samples were tested as cathodes of LIBs, the sample PPy5 with a coating layer thickness of about 3 nm exhibits an optimum electrochemical performance. More detailed analysis of electrochemical impedance spectra and structures for the cycled electrodes show that the coating layer of about 3 nm endows the PPy5 cathode with the smallest resistance and the most stable structure, ensuring its excellent cycle stability and rate performance. Comparatively, coating layer thickness of about 1 nm is too thin to maintain the structural stability of PPy1 cathode during a long‐term cycle, and an over thick coating layer (approximately 5 nm) significantly increases the resistance due to the shedding of the electrode, which results in their poor electrochemical performance. The results given in present paper will provide the guidance for optimizing the electrochemical properties of conductive polymer coated cathode materials.

show abstract

“…Conducting polymer coating is also reported as another strategy, which not only be able to protect the surface of cathode, but also to serve as a conductive matrix. Compounds such as aniline [17,18], pyrrole [19,20], 3,4-ethylenedioxythiophene [21,22], acrylonitrile [23] [24]. Employing monomer units of conducting polymers as electrolyte additives is a more economic and effective way to in-situ coat the electrode [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Interface modification in high voltage spinel lithium-ion battery by using N-methylpyrrole as an electrolyte additive

Chen

Gao

et al. 2015

Electrochimica Acta

View full text Add to dashboard Cite

Polypyrrole-coated LiCoO 2 nanocomposite with enhanced electrochemical properties at high voltage for lithium-ion batteries

Cited by 80 publications

References 44 publications

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Unveiling the Impact of the Polypyrrole Coating Layer Thickness on the Electrochemical Performances of LiNi_0.5Co_0.2Mn_0.3O₂ in Li–Ion Battery

Interface modification in high voltage spinel lithium-ion battery by using N-methylpyrrole as an electrolyte additive

Contact Info

Product

Resources

About

Polypyrrole-coated LiCoO 2 nanocomposite with enhanced electrochemical properties at high voltage for lithium-ion batteries

Cited by 80 publications

References 44 publications

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Peripheral Nerve Regeneration Strategies: Electrically Stimulating Polymer Based Nerve Growth Conduits

Unveiling the Impact of the Polypyrrole Coating Layer Thickness on the Electrochemical Performances of LiNi0.5Co0.2Mn0.3O2 in Li–Ion Battery

Interface modification in high voltage spinel lithium-ion battery by using N-methylpyrrole as an electrolyte additive

Contact Info

Product

Resources

About

Unveiling the Impact of the Polypyrrole Coating Layer Thickness on the Electrochemical Performances of LiNi_0.5Co_0.2Mn_0.3O₂ in Li–Ion Battery