Functionalization of Defect Sites in Graphene with RuO2 for High Capacitive Performance

ACS Applied Materials & Interfaces
Fan YangMato Knez

Abstract

Graphene is an attractive material for its physicochemical properties, but for many applications only chemically synthesized forms such as graphene oxide (GO) and reduced graphene oxide (rGO) can be produced in sufficient amounts. If considered as electrode material, the intrinsic defects of GO or rGO may have negative influence on the conductivity and electrochemical properties. Such defects are commonly oxidized sites that offer the possibility to be functionalized with other materials in order to improve performance. In this work, we demonstrate how such ultimately efficient functionalization can be achieved: namely, through controlled binding of very small amount of materials such as RuO2 to rGO by atomic layer deposition (ALD), in this way substituting the native defect sites with RuO2 defects. For the example of a supercapacitor, we show that defect functionalization results in significantly enhanced specific capacitance of the electrode and that its energy density can be stabilized even at high consumption rates.

References

Oct 29, 2008·Nature Materials·Patrice Simon, Yury Gogotsi
Dec 2, 2009·Chemical Reviews·Steven M George
Aug 14, 2010·Advanced Materials·Yanwu ZhuRodney S Ruoff
Nov 10, 2010·Nano Letters·Chenguang LiuBor Z Jang
Feb 22, 2011·Nature Nanotechnology·Xingyou LangMingwei Chen
Aug 30, 2012·Advanced Materials·Nathan O WeissXiangfeng Duan
Mar 5, 2013·Chemical Society Reviews·Qifeng ZhangGuozhong Cao
Mar 14, 2013·Accounts of Chemical Research·Yi ZhangChongwu Zhou
Jul 3, 2013·Advanced Materials·Guancai XieJian Ru Gong
Oct 8, 2013·Nature Communications·Joong Tark HanGeon-Woong Lee
Sep 3, 2014·Nature Communications·Kwanpyo KimZhenan Bao

❮ Previous
Next ❯

Citations

Apr 8, 2016·Chemical Society Reviews·Adriano AmbrosiMartin Pumera
Feb 2, 2021·Chemical Society Reviews·Yang ZhaoXueliang Sun

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.