High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte

doi:10.1021/acsnano.7b09177

	High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte
	Tian, Jing 1; Cao, Dunping ; Zhou, Xuejun ; Hu, Jiulin 1; Huang, Minsong 1; Li, Chilin
刊名	ACS NANO
	2018
卷号	12 期号:4 页码:3424
关键词	nanostructured rhodizonate salts Mg-organic batteries Mg-Li dual-salt electrolyte multielectron transfer reaction pseudocapacitance effect
ISSN号	1936-0851
DOI	10.1021/acsnano.7b09177
英文摘要	A magnesium battery is a promising candidate for large-scale transportation and stationary energy storage due to the security, low cost, abundance, and high volumetric energy density of a Mg anode. But there are still some obstacles retarding the wide application of Mg batteries, including poor kinetics of Mg-ion transport in lattices and low theoretical capacity in inorganic frameworks. A Mg-Li dual-salt electrolyte enables kinetic activation by dominant intercalation of Li-ions instead of Mg-ions in cathode lattices without the compromise of a stable Mg anode process. Here we propose a Mg organic battery based on a renewable rhodizonate salt (e.g., Na2C6O6) activated by a Mg-Li dual-salt electrolyte. The nanostructured organic system can achieve a high reversible capacity of 350-400 mAh/g due to the existence of high-density carbonyl groups (C=O) as redox sites. Nanocrystalline Na2C6O6 wired by reduced graphene oxide enables a high-rate performance of 200 and 175 mAh/g at 2.5 (5 C) and 5 A/g (10 C), respectively, which also benefits from a high intrinsic diffusion coefficient (10(-12)-10(-11) cm(2)/s) and pesudocapacitance contribution (>60%) of Na2C6O6 for Li-Mg co-intercalation. The suppressed exfoliation of C6O6 layers by a firmer non-Li pinning via Na-O-C or Mg-O-C and a dendrite-resistive Mg anode lead to a long-term cycling for at least 600 cycles. Such an extraordinary capacity/rate performance endows the Mg Na2C6O6 system with high energy and power densities up to 525 Wh/kg and 4490 W/kg (based on active cathode material), respectively, exceeding the level of high-voltage insertion cathodes with typical inorganic structures.
学科主题	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000431088200039
资助机构	This work was supported by the National Key R&D Program of China (2016YFB0901600), National Natural Science Foundation of China (51772313, 51372263), Key Research Program of Chinese Academy of Sciences (KGZD-EW-T06), "Hundred Talents" Program of Chinese Academy of Sciences, and "Thousand Talents" Program of Shanghai. ; This work was supported by the National Key R&D Program of China (2016YFB0901600), National Natural Science Foundation of China (51772313, 51372263), Key Research Program of Chinese Academy of Sciences (KGZD-EW-T06), "Hundred Talents" Program of Chinese Academy of Sciences, and "Thousand Talents" Program of Shanghai.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25029]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Ding Xi Rd, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Tian, Jing,Cao, Dunping,Zhou, Xuejun,et al. High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte[J]. ACS NANO,2018,12(4):3424, 3435.
APA	Tian, Jing,Cao, Dunping,Zhou, Xuejun,Hu, Jiulin,Huang, Minsong,&Li, Chilin.(2018).High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte.ACS NANO,12(4),3424.
MLA	Tian, Jing,et al."High-Capacity Mg-Organic Batteries Based on Nanostructured Rhodizonate Salts Activated by Mg-Li Dual-Salt Electrolyte".ACS NANO 12.4(2018):3424.