An all manganese-based oxide nanocrystal cathode and anode for high performance lithium-ion full cells

Song Chen; Yumeng Shi; Ye Wang; Yang Shang; Wei Xia; Hui Ying Yang

doi:10.1039/c9na00003h

An all manganese-based oxide nanocrystal cathode and anode for high performance lithium-ion full cells

Nanoscale Adv. 2019 Mar 11;1(5):1714-1720. doi: 10.1039/c9na00003h. eCollection 2019 May 15.

Authors

Song Chen^{1

2}, Yumeng Shi^{1

3}, Ye Wang⁴, Yang Shang², Wei Xia⁵, Hui Ying Yang²

Affiliations

¹ International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China yumeng.shi@szu.edu.cn.
² Pillar of Engineering Product Development, Singapore University of Technology and Design 8 Somapah Road 487372 Singapore yanghuiying@sutd.edu.sg.
³ Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University Shenzhen 518060 China.
⁴ Key Laboratory of Material Physics of Ministry of Education, School of Physics and Engineering, Zhengzhou University Zhengzhou 450052 China.
⁵ College of Mechanical Engineering, Beijing University of Technology, Beijing Key Laboratory of Nonlinear Vibrations and Strength of Mechanical Structures Beijing 100124 China.

Abstract

Manganese oxide nanocrystals are of great interest for producing advanced high-performance lithium ion batteries owing to the shortened lithium ion diffusion length and accelerated interfacial charge transfer rate. Here we have developed a well-controlled generic method to synthesize monodisperse MnO nanocrystals, and present a comparative study regarding the effect of crystallite size on electrochemical stability. Nanocrystalline MnO with a size of about 10 nm shows the optimal lithium-storage performance. Notably, Mn-based nanocrystals retain their stable cyclability and excellent high-rate performance as both the anode and cathode. The all-nanocrystal MnO/C//LMO Li-ion full cells not only significantly improve the electrochemical properties of Mn-based materials but also open up avenues for the future development of various energy devices.