All‐gel Proton‐conducting Batteries with BiOCl and VOSO4 as Active Materials

Author:

Iyapazham Vaigunda Suba Prathap1ORCID,Shoaib Muhammad1ORCID,Hoang Nguyen Oanh1ORCID,Karan Kunal2ORCID,Larter Stephen R.3ORCID,Thangadurai Venkataraman1ORCID

Affiliation:

1. Department of Chemistry University of Calgary Calgary Alberta T2N 1N4 Canada

2. Department of Chemical and Petroleum Engineering University of Calgary Calgary Alberta T2N 1N4 Canada

3. Department of Earth, Energy, and Environment University of Calgary Calgary Alberta T2N 1N4 Canada

Abstract

AbstractFlexible, scalable, and low‐cost energy storage solutions are required for the widespread use of renewable energy and the mitigation of climate change. State‐of‐the‐art lithium‐ion batteries provide high specific energy density; however, designing a safe and cost‐effective grid‐scale lithium‐ion battery is still a major challenge. Redox flow batteries are scalable due to their ability to decouple power and energy; however, the commercial applications of these batteries are limited because of expensive ion‐selective membranes. In this paper, we report a modified battery design approach in which Bi/BiOCl and V4+/V5+ reaction‐based redox couples are utilized while employing a gel‐based architecture. We show, for the first time, that Bi/BiOCl conversion reaction based redox couple can reversibly work against traditional vanadium‐based redox pair in an aqueous electrolyte. Redox active materials in this cell design are in the gel form, and a traditional membrane or a separator is not required. This proof‐of‐concept battery delivers 0.9 V with a volumetric energy density of 22.14 Wh/L.

Publisher

Wiley

Subject

Electrochemistry,Electrical and Electronic Engineering,Energy Engineering and Power Technology

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