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.
Descriptors:
Subject Categories:
- Electrical and Electronic Equipment