气候变化领域集成服务门户(CCPortal): Flexible lithium-CO2 battery with ultrahigh capacity and stable cycling

CCPortal

DOI	10.1039/c8ee01468j
	Flexible lithium-CO2 battery with ultrahigh capacity and stable cycling
	Xu S.; Chen C.; Kuang Y.; Song J.; Gan W.; Liu B.; Hitz E.M.; Connell J.W.; Lin Y.; Hu L.
发表日期	2018
ISSN	17545692
起始页码	3231
结束页码	3237
卷号	11 期号:11
英文摘要	Carbon dioxide is understood as a major contributor to the greenhouse effect. The search for an effective and efficient method for CO2 capture and utilization has become a priority task on a global scale. For Mars exploration missions, the ability to use the CO2 in the atmosphere (96%) could offer great benefits in terms of energy storage. The Li-CO2 battery is considered a promising platform for CO2 capture, with its ability to utilize the captured CO2 for energy storage. However, the Li-CO2 battery still suffers various inadequacies, including the slow kinetics of CO2 reduction, the high charge/discharge hysteresis, the ultra-stable discharge product, and the slow transport of CO2 gas and electrolyte. In this work, we introduce a high-capacity, long-life Li-CO2 battery based on a flexible wood cathode architecture. Mother nature has produced the most efficient ion and gas transport architectural system in the form of wood. The unique channel structure of the wood-based cathode separates the transport of CO2 and the electrolyte into specific pathways, leading to facilitated transport. The improvements in mass transport, combined with faster kinetics as a result of the use of Ru nanocatalyst supported on carbon nanotubes that reside in the microchannels, contribute to substantially improved electrochemical performance. Stable cycling for over 200 cycles with both a low overpotential and an ultrahigh discharge capacity of 11 mA h cm-2 is achieved with the flexible wood-based Li-CO2 battery. Such a long cycle life and high capacity is unprecedented for a Li-CO2 battery. Additionally, the cathode exhibits excellent mechanical flexibility imparted by the flexible wood scaffold, holding great promise for wearable device applications. The high capacity and the long cycle life make the flexible wood cathode Li-CO2 battery a promising candidate for combining CO2 capture and utilization. © The Royal Society of Chemistry 2018.
英文关键词	Carbon dioxide; Cathodes; Charging (batteries); Electrolytes; Energy storage; Greenhouse effect; Lithium; Lithium batteries; Martian surface analysis; Nanocatalysts; Petroleum prospecting; Scaffolds; Secondary batteries; Wood; Yarn; Architectural systems; Channel structures; Discharge capacities; Electrochemical performance; Facilitated transport; Mars exploration; Mechanical flexibility; Wearable devices; Lithium compounds; carbon dioxide; carbon monoxide; electrochemistry; electrolyte; energy storage; equipment component; gas transport; greenhouse gas; lithium; performance assessment; reaction kinetics
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190069
作者单位	Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, United States; NASA Langley Research Center, Hampton, VA 23861, United States; National Institute of Aerospace, Hampton, VA 23666, United States
推荐引用方式 GB/T 7714	Xu S.,Chen C.,Kuang Y.,et al. Flexible lithium-CO2 battery with ultrahigh capacity and stable cycling[J],2018,11(11).
APA	Xu S..,Chen C..,Kuang Y..,Song J..,Gan W..,...&Hu L..(2018).Flexible lithium-CO2 battery with ultrahigh capacity and stable cycling.Energy & Environmental Science,11(11).
MLA	Xu S.,et al."Flexible lithium-CO2 battery with ultrahigh capacity and stable cycling".Energy & Environmental Science 11.11(2018).