The Synthesis Of High Surface Area Ti Sponges By Halide Conversion Process For Capacitor Anodes

Titanium sponge was synthesized by halide conversion process. It can be used as an anode with porous structure for an electrolytic capacitor. TiI4 and Ca as the reduction agent were used in the conversion process to obtain open-porous Ti sponges. By changing the reduction temperature and time of the conversion process, Ti sponges with different particle sizes were obtained. A model of Ti sponge formation during the conversion process is proposed. The sponge samples were additionally anodized to grow oxide films over the entire sponge surface and evaluated by measuring the capacitance and leakage current. The anodized Ti sponge samples, with their oxide films of high dielectric constant, can provide high surface to volume ratio to obtain energy density as high as 1J per gram of the anodized Ti sponge. The energy density of the anodized Ti sponge samples is compared with commercial anode materials and shows comparable results.

Name thesis:degree_name

Master of Sciences

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Materials Science and Engineering

Grantor dc:publisher

Case Western Reserve University School of Graduate Studies

Year dc:date

2013

Author dc:creator

• Chih-Hsiang, Yo

Contributors dc:contributor

• Welsch, Gerhard

• Materials Science

Statement dc:rights

• unrestricted
• This thesis or dissertation is protected by copyright: some rights reserved. It is licensed for use under a Creative Commons license. Specific terms and permissions are available from this document's record in the OhioLINK ETD Center.

Language dc:language

English

Repository record dc:identifier

http://rave.ohiolink.edu/etdc/view?acc_num=case1363107584

OAI identifier oai:identifier

oai:etd.ohiolink.edu:case1363107584