Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Chemomechanical Design Rules for Solid-Ion Conductors to
  Prevent Dendrite Formation in Lithium Metal Batteries   Dendrite formation during electrodeposition while charging lithium metal
batteries compromises their safety. While high shear modulus solid-ion
conductors (SICs) have been prioritized to resolve pressure-driven
instabilities that lead to dendrite propagation and cell shorting, it is
unclear whether these or alternatives are needed to guide uniform lithium
electrodeposition, which is intrinsically density-driven. Here, we show that
SICs can be designed within a universal chemomechanical paradigm to access
either pressure-driven dendrite-blocking or density-driven dendrite-suppressing
properties, but not both. This dichotomy reflects the competing influence of
the SICs mechanical properties and partial molar volume of Li+ relative to
those of the lithium anode on plating outcomes. Within this paradigm, we
explore SICs in a previously unrecognized dendrite-suppressing regime that are
concomitantly soft, as is typical of polymer electrolytes, but feature
atypically low Li+ partial molar volume, more reminiscent of hard ceramics. Li
plating mediated by these SICs is uniform, as revealed using synchrotron hard
x-ray microtomography. As a result, cell cycle-life is extended, even when
assembled with thin Li anodes and high-voltage NMC-622 cathodes, where 20
percent of the Li inventory is reversibly cycled.

6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an