Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On The Inverse Relaxation Approach To Supercapacitors Characterization   A novel inverse relaxation technique for supercapacitor characterization is
developed, modeled numerically, and experimentally tested on a number of
commercial supercapacitors. It consists in shorting a supercapacitor for a
short time $\tau$, then switching to the open circuit regime and measuring an
initial rebound and long-time relaxation. The results obtained are: the ratio
of "easy" and "hard" to access capacitance and the dependence $C(\tau)$, that
determines what the capacitance the system responds at time-scale $\tau$; it
can be viewed as an alternative to used by some manufacturers approach to
characterize a supercapacitor by fixed capacitance and time-scale dependent
internal resistance. Among the advantages of proposed technique is that it does
not require a source of fixed current, what simplifies the setup and allows a
high discharge current regime. The approach can be used as a replacement of
low-frequency impedance measurements and the ones of IEC 62391 type, it can be
effectively applied to characterization of supercapacitors and other relaxation
type systems with porous internal structure. The technique can be completely
automated by a microcontroller to measure, analyze, and output the results.

37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th