Structure-Property of Metal Organic Frameworks Calcium Terephthalates Anodes for Lithium-ion Batteries. (10th August 2015)

• Record Type: Journal Article
• Authors: Wang, Liping; Mou, Chengxu; Sun, Yang; Liu, Wei; Deng, Qijiu; Li, Jingze
• Is Part Of: Electrochimica acta. Volume 173(2015)
• Page Start: 235
• Page End: 241
• Publication Date: 2015-08-10
• Subjects: Metal organic frameworks -- Carboxylate -- Hydration water -- Calcium terephthalate -- Lithium ion battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.05.067
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical Abstract: Effects of hydration water in calcium terephthalates anodes on the structure, operational voltage and electrochemical performance are systematically studied. Highlights: Metal organic frameworks CaC8 H4 O4 ·3H2 O and CaC8 H4 O4 are applied as anodes for lithium ion batteries. Appearance of hydration water leads different crystallography structures and electrochemical performance. Anhydrous CaC8 H4 O4 has a spacious ordered layer structure, a higher Ca-O chemical bonding interaction and a higher transparent lithium ion diffusion coefficient, delivering a higher capacity, better cycling performance and rate performance than CaC8 H4 O4 ·3H2 O. Abstract: Metal organic frameworks have attracted considerable interest as electrode materials for lithium ion batteries. In this paper, the metal organic frameworks hydrated calcium terephthalate (CaC8 H4 O4 ·3H2 O) and anhydrous calcium terephthalate (CaC8 H4 O4 ) as anodes for lithium ion batteries are comparatively studied. Crystallography and local chemical bond analysis are combined to interpret the structure-property of calcium terephthalates. Results show that the anhydrous CaC8 H4 O4 has a spacious ordered layer structure and a higher Ca-O chemical bonding interaction, delivering a higher capacity, better cycling performance and rate performance than CaC8 H4 O4 ·3H2 O.