It is demonstrated that good proton conductors can be obtained in transition-element-rich layered intercalation materials such as LixAl0.5Co0.5O2. A power density of 173 mW cm−2 is achieved at 525 °C with a thick electrolyte (0.79 mm thick). The ionic conductivity of nominal LiAl0.5Co0.5O2 is 0.1 S cm−1 at 500 °C. This is the highest among known polycrystalline proton-conducting materials.
Bibliographical noteThis is the peer reviewed version of the following article: Lan, R & Tao, S 2014, 'Novel proton conductors in the layered oxide material LixlAl0. 5Co0. 5O2' Advanced Energy Materials, vol 4, no. 7, 1301683, which has been published in final form at https://dx.doi.org/10.1002/aenm.201301683. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
- proton-conducting materials
- layered materials
- fuel cells