We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Success and serendipity on achieving high energy density for rechargeable batteries.
- Authors
Minakshi, Manickam; Singh, Pritam
- Abstract
Rechargeable lithium batteries that use non-aqueous electrolytes may not be suitable for electric vehicle applications, which require safe, inexpensive, and high energy density. In this paper, we showed that reversible lithium intercalation can occur in MnO cathode coupled with Zn anode while using LiOH aqueous electrolyte. This new Zn|LiOH|MnO aqueous rechargeable cell could operate around 1.5 V for multiple cycles and possibly be used in battery packs, are of low cost, and environmentally benign. However, higher energy density, power density, and cycling life of the Zn|LiOH|MnO system are required for exploiting this technology to better compete with the lithium battery counterparts. Serendipitously, high energy density (270 Wh/Kg) that was achieved with physically mixed additives (BiO and TiB) on MnO is reported. Physically modified cathode containing multiple additives is shown to be superior in energy density and capacity retention compared to that of the additive-free MnO or carbon-coated MnO using polyvinylpyrrolidone as the source. The role of the additives (BiO and BiO + TiB) in the MnO electrode is found to avoid the formation of unwanted (non-rechargeable) products and to decrease the polarization of the electrode.
- Subjects
MANGANESE dioxide electrodes; SERENDIPITY in science; LITHIUM cells; AQUEOUS electrolytes; STORAGE batteries
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 6, p2227
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-012-1655-1