Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Do 2D material-based battery electrodes have inherently poor
  rate-performance?   Two dimensional materials show great potential for use in battery electrodes
and are believed to be particularly promising for high-rate applications.
However, there does not seem to be much hard evidence for the superior
rate-performance of 2D materials compared to non-2D materials. To examine this
point, we have analyzed published rate-performance data for a wide range of 2D
materials as well as non-2D materials for comparison. For each capacity-rate
curve we extract parameters which quantify performance which can then be
analyzed using a simple mechanistic model. Contrary to expectations, by
comparing a previously-proposed figure of merit, we find 2D-based electrodes to
be on average ~40 times poorer in terms of rate performance than non-2D
materials. This is not due to differences in solid-state diffusion times which
were similarly distributed for 2D and non-2D materials. In fact, we found the
main difference between 2D and non-2D materials to be that ion mobility within
the electrolyte-filled pores of the electrodes to be significantly lower for 2D
materials, a situation which we attribute to their high aspect ratios.

27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph