期刊
ELECTROCHIMICA ACTA
卷 292, 期 -, 页码 546-557出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.09.132
关键词
Layer-by-layer structuring; Spray printing; Lithium titanate; Lithium iron phosphate; Lithium-ion battery
资金
- Innovate UK [102655]
- Innovate UK [102655] Funding Source: UKRI
A spray printing manufacturing approach to lithium-ion batteries was investigated with a focus on minimizing inactive fractions and maximizing energy and power densities of printable electrodes. Using a lithium titanate based anode initially and comparing with conventional electrodes, the effects of conductivity enhancer and binder fractions, post-calendaring effects, different electrode manufacturing methods, conductivity enhancer types and electrode thicknesses were explored, and optimum electrode structures were identified. These insights were then applied to a lithium iron phosphate based cathode, and full spray printed lithium titanate/lithium iron phosphate cell configurations were investigated. Notably, the full-cell battery with a 1:1 capacity ratio of lithium titanate to lithium iron phosphate had a stable specific energy density of similar to 300 Wh/kg and a power density of similar to 2500 W/kg, showing the promise of layer-by-layer spray printing to realize fully the intrinsic properties of electrode materials in lithium-ion battery cells. (C) 2018 Elsevier Ltd. All rights reserved.
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