Accession Number:

AD0777116

Title:

Effect of Boron Addition on the Differential Capacitance of Stress- Annealed Pyrolytic Graphite

Descriptive Note:

Technical rept.

Corporate Author:

CASE WESTERN RESERVE UNIV CLEVELAND OH ELECTROCHEMISTRY RESEARCH LAB

Personal Author(s):

Report Date:

1974-03-01

Pagination or Media Count:

25.0

Abstract:

The non-faradaic differential electrode capacity of the basal plane of boronated stress-annealed pyrolytic graphite with 0.3 weight boron was studied in aqueous solution using an a.c. impedance bridge and compared to results previously obtained on the non-boronated material. On boronated graphite the potential of the minimum in the capacity-potential curve shifts negative by about 0.5 V relative to that for the non-boronated material. This shift is in agreement with the semiconductor interpretation proposed previously for the capacitance of the basal plane of the non-boronated material. The capacity of the minimum for the boronated material compared favorably with that estimated from the carrier concentration for the space charge region in the electrode phase.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE