NDLI: The effect of the mechanical activation dose on the defective structure of artificial graphite

Content Provider	Springer Nature Link
Author	Boruva, A. B. Streletskii, A. N. Permev, D. G. Leov, A. V.
Copyright Year	2015
Abstract	Energy parameters (dose D and the work of surface formation) have been determined for the formation of a defective structure as a result of mechanical activation of graphite. Graphite activation has been shown to be a two-stage process: at low doses (D ≤ 20 kJ/g), the disruption and shift of graphite particles are the main processes, which are accompanied by a reduction in particle size, formation of meso- and micropores, and a rise in the BET specific surface area to 450–550 m2/g predominantly due to the development of a slitlike mesoporosity. At the same time, the crystalline structure of graphite is transformed into a turbostrate one with a concomitant increase in the lattice parameter and a decrease in the sizes of coherentscattering regions. The shape of diffraction lines can be described under the assumption that several fractions with greatly different degrees of defectiveness coexist in graphite. At higher doses, turbostrate graphite is transformed into X-ray amorphous carbon with a concomitant decrease in the specific surface area and meso- and microporosity. The defects resulting from the mechanical activation cannot be completely annealed at 2800°C. The main parameter of mechanical activation is the dose of supplied energy D = J g t (J g is the specific power consumption, and t is the duration of the activation). The curves describing accumulation of different defects can be represented in the form of a unified dependence on the dose for the J g and, accordingly, t values varied by more than an order of magnitude (J g = 1.7–22 W/g).
Starting Page	125
Ending Page	134
Page Count	10
File Format	PDF
ISSN	1061933X
Journal	Colloid Journal
Volume Number	77
Issue Number	2
e-ISSN	16083067
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-03-20
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Physical and Theoretical Chemistry Surfaces and Interfaces

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Mechanical activation of aluminum: 2. Size, shape, and structure of particles

Mechanochemical activation of aluminum: 1. Joint grinding of aluminum and graphite

Mechanochemical activation of aluminum: 1. joint grinding of aluminum and graphite

Defective structure and reactivity of mechanoactivated magnesium/fluoroplastic energy-generating composites

Equilibrium thin liquid films

Sorbostriction and the Rehbinder effect

Separation of Fe-Cu melts upon graphite wetting

Structure and dynamics of surfaces of thin films and water microdroplets

Porous structure of synthetic opals

The effect of the mechanical activation dose on the defective structure of artificial graphite

Similar Documents

Mechanical activation of aluminum: 2. Size, shape, and structure of particles

Mechanochemical activation of aluminum: 1. Joint grinding of aluminum and graphite

Mechanochemical activation of aluminum: 1. joint grinding of aluminum and graphite

Defective structure and reactivity of mechanoactivated magnesium/fluoroplastic energy-generating composites

Equilibrium thin liquid films

Sorbostriction and the Rehbinder effect

Separation of Fe-Cu melts upon graphite wetting

Structure and dynamics of surfaces of thin films and water microdroplets

Porous structure of synthetic opals

The effect of the mechanical activation dose on the defective structure of artificial graphite