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@ARTICLE{Wrogemann:906587,
author = {Wrogemann, Jens Matthies and Fromm, Olga and Deckwirth,
Fabian and Beltrop, Kolja and Heckmann, Andreas and Winter,
Martin and Placke, Tobias},
title = {{I}mpact of {D}egree of {G}raphitization, {S}urface
{P}roperties and {P}article {S}ize {D}istribution on
{E}lectrochemical {P}erformance of {C}arbon {A}nodes for
{P}otassium‐{I}on {B}atteries},
journal = {Batteries $\&$ supercaps},
volume = {5},
number = {6},
issn = {2566-6223},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2022-01538},
pages = {e202200045},
year = {2022},
abstract = {Carbons are considered as anode active materials in
potassium ion batteries (PIBs). Here, the correlation
between material properties of disordered (non-graphitic)
and ordered graphitic carbons and their electrochemical
performance in carbon || K metal cells is evaluated. First,
carbons obtained from heat treatment of petroleum coke at
temperatures from 800 to 2800 °C are analyzed regarding
their microstructure and surface properties. Electrochemical
performance metrics for K+ ion storage like specific
capacity and Coulombic efficiency (CEff) are correlated with
surface area, non-basal planes and microstructure
properties, and compared to Li+ ion storage. For disordered
carbons, the specific capacity can be clearly correlated
with the defect surface area. For highly ordered graphitic
carbons, the degree of graphitization strongly determines
the specific capacity. The initial CEff of graphitic carbons
shows a strong correlation with basal and non-basal planes.
Second, kinetic limitations of ordered graphitic carbons are
re-evaluated by analyzing commercial graphites regarding
particle size and surface properties. A clear correlation
between particle size, surface area and well-known
challenges of graphitic carbons in terms of low-rate
capability and voltage hysteresis is observed. This work
emphasizes the importance of bulk and surface material
properties for K+ ion storage and gives important insights
for future particle design of promising carbon anodes for
PIB cells.},
cin = {IEK-12},
ddc = {620},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {1221 - Fundamentals and Materials (POF4-122)},
pid = {G:(DE-HGF)POF4-1221},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000766186000001},
doi = {10.1002/batt.202200045},
url = {https://juser.fz-juelich.de/record/906587},
}