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arXiv · 1810.01471

Sodium Metal Battery using CobaltOxide through in Situ Plating of Sodium Metal

Saurav L Chaudhari·Ketan P Pise
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Abstract

In this work, we demonstrate that an impugn of energy density for sodium chemistries can be prevail through an anode-free architecture enabled by the use of a (nanocarbon/Cobaltoxide) nucleation layer formed on Aluminium current collectors. Electrochemical studies show this configuration to provide highly stable and efficient plating and stripping of sodium metal over a range of currents up to 5 mA/cm2, sodium loading up to 14 mAh/cm2, and with long-term endurance exceeding 1000 cycles at a current of 0.7 mA/cm2. Building upon this anode-free architecture, we demonstrate a full cell using a presodiated pyrite cathode to achieve energy densities of 400 Wh/kg, far surpassing recent reports on SIBs and even the theoretical maximum for LIB technology while still relying on naturally abundant raw materials and cost-effective aqueous processing.

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Saurav L Chaudhari, Ketan P Pise. 2018-10-02. Sodium Metal Battery using CobaltOxide through in Situ Plating of Sodium Metal. https://arxiv.org/abs/1810.01471

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