Detail publikace

Decomposition of a Potassium-Based Supersaturated Zincate Solution in Electrolytes with Reduced Zinc Solubility

SMEJKAL, J. CHLADIL, L.

Originální název

Decomposition of a Potassium-Based Supersaturated Zincate Solution in Electrolytes with Reduced Zinc Solubility

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

The decomposition rate of supersaturated zincate electrolytes based on 6 mol·dm-3 KOH was measured and the effect of additives used for reducing zincate solubility (KF, K2CO3, K3PO4) was evaluated. The electrolytes were studied after being aged for 5 years at room temperature. Powder morphology was obtained as a result of recrystallization processes were evaluated. Results indicate that the presence of 1 mol·dm-3 PO43- ions reduced the speed of decomposition to less than half. A study of ZnO recrystallization revealed the changes in particle sizes for all additives. Despite the long time of recrystallization processes, ZnO particles grew to different sizes depending on the type of low solubility electrolyte (LSE) used. While the presence of PO43- and F- ions promote the particle growth in all directions and thus influence both particle lengths and widths. The presence of carbonate ions CO32- reduce the particle sizes and thus could contribute to the growth of a larger active area of electrodes after long-term aging.

Klíčová slova

supersaturated zincate, low solubility electrolyte, decomposition, recrystallization, Ni-Zn, Zinc-Air,

Autoři

SMEJKAL, J.; CHLADIL, L.

Vydáno

17. 11. 2020

ISSN

1938-5862

Periodikum

ECS Transactions

Ročník

99

Číslo

1

Stát

Spojené státy americké

Strany od

123

Strany do

129

Strany počet

7

URL

https://iopscience.iop.org/article/10.1149/09901.0123ecst/pdf

BibTex

@inproceedings{BUT167566,
  author="Jan {Smejkal} and Ladislav {Chladil}",
  title="Decomposition of a Potassium-Based Supersaturated Zincate Solution in Electrolytes with Reduced Zinc Solubility",
  booktitle="ECS Transactions",
  year="2020",
  journal="ECS Transactions",
  volume="99",
  number="1",
  pages="123--129",
  doi="10.1149/09901.0123ecst",
  issn="1938-5862",
  url="https://iopscience.iop.org/article/10.1149/09901.0123ecst/pdf"
}