Effects of water-based binders on electrochemical performance of manganese dioxide cathode in mild aqueous zinc batteries
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
In the majority of rechargeable batteries including lithium ion batteries (LIBs), polyvinylidene fluoride (PVdF) binders are the most commonly used binder for both anode and cathode. However, using PVdF binder requires the organic solvent of N-methyl-2-pyrrolidone (NMP) which is expensive, volatile, combustible, toxic, and has poor recyclability. Therefore, switching to aqueous electrode processing routes with non-toxic binders would provide a great leap forward towards the realization of ideally fully sustainable and environmentally friendly electrochemical energy storage devices. Various water-soluble binders (aqueous binders) were characterized and compared to the performance of conventional PVDF. Our study demonstrates that the electrochemical performance of Zn/MnO2 aqueous batteries is significantly improved by using sodium carboxymethyl cellulose (CMC) binder. Additionally, CMC binders offers desirable adhesion, good wettability, homogeneous material distribution, and strong chemical stability at certain pH levels (3.5~5) without any decomposition for long-cycle life.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Electricity (OE)
- Grant/Contract Number:
- AC05-76RL01830; 57558
- OSTI ID:
- 1820381
- Report Number(s):
- PNNL-SA-154267
- Journal Information:
- Carbon Energy, Vol. 3, Issue 3; ISSN 2637-9368
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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