Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Development of a low flow vapor phase electrochemical reactor without
  catholyte reliance for CO2 electrolysis to high value carbon products   A continuous CO2 vapor-fed electrochemical cell prototype that performs CO2R
with high faradaic efficiency for desired carbon products for up to 72 hours of
operation is presented. The cell design facilitates a flow through
configuration, capitalizing on gas diffusion electrode (GDE) and membrane
electrode architecture (MEA) without requiring a catholyte. We demonstrate
stable performance and design adaptability by incorporating various CO2R
catalysts and membranes into the cell, investigating lifetime performance and
selectivity under established experimental conditions. With an Ag foil and PPO
anion exchange membrane, the design achieves an average current density of
-30mA/cm2 and FE ~80% for CO obtained over a 12-hour duration. With a Cu-based
catalyst, FE ~40% selectivity for ethylene was achieved. The unique geometry
and flexibility of the cell provides an adaptive and dynamic GDE
electrochemical cell framework, easing future research for novel
electro-catalysts on GDE electrodes and MEA/GDE assemblies for enhanced
(photo)electrochemical carbon dioxide reduction.

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th