title: Bacteria Absorption-Based Mn2P2O7-Carbon@Reduced Graphene Oxides for High-Performance Lithium-Ion Battery Anodes.
abstract: The development of freestanding flexible electrodes with high capacity and long cycle-life is a central issue for lithium-ion batteries (LIBs). Here, we use bacteria absorption of metallic Mn(2+) ions to in situ synthesize natural micro-yolk-shell-structure Mn2P2O7-carbon, followed by the use of vacuum filtration to obtain Mn2P2O7-carbon@reduced graphene oxides (RGO) papers for LIBs anodes. The Mn2P2O7 particles are completely encapsulated within the carbon film, which was obtained by carbonizing the bacterial wall. The resulting carbon microstructure reduces the electrode-electrolyte contact area, yielding high Coulombic efficiency. In addition, the yolk-shell structure with its internal void spaces is ideal for sustaining volume expansion of Mn2P2O7 during charge/discharge processes, and the carbon shells act as an ideal barrier, limiting most solid-electrolyte interphase formation on the surface of the carbon films (instead of forming on individual particles). Notably, the RGO films have high conductivity and robust mechanical flexibility. As a result of our combined strategies delineated in this article, our binder-free flexible anodes exhibit high capacities, long cycle-life, and excellent rate performance.
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.
authors.forename: Yuhua
authors.initials: Y
authors.lastname: Yang
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.|Physics and Electronic Engineering Department, Xinxiang University , Xinxiang 453003, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Wang
authors.affiliation: Department of Physics and Astronomy, Clemson Nanomaterials Center and COMSET, Clemson University , Clemson, South Carolina 29634, United States.
authors.forename: Jingyi
authors.initials: J
authors.lastname: Zhu
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.|2D Material Technology Company Limited , Wing Lok Street, Sheung Wan, Hong Kong 999077, People's Republic of China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Xu
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.
authors.forename: Ling
authors.initials: L
authors.lastname: Fan
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Department of Physics and Astronomy, Clemson Nanomaterials Center and COMSET, Clemson University , Clemson, South Carolina 29634, United States.
authors.forename: Ramakrishna
authors.initials: R
authors.lastname: Podila
authors.affiliation: Department of Physics and Astronomy, Clemson Nanomaterials Center and COMSET, Clemson University , Clemson, South Carolina 29634, United States.
authors.forename: Apparao M
authors.initials: AM
authors.lastname: Rao
authors.affiliation: School of Physics and Electronics, Hunan University , Changsha 410082, People's Republic of China.|2D Material Technology Company Limited , Wing Lok Street, Sheung Wan, Hong Kong 999077, People's Republic of China.
authors.forename: Bingan
authors.initials: B
authors.lastname: Lu
keywords: bacteria; binder-free flexible anode; lithium-ion batteries; reduced graphene oxides; yolk−shell Mn2P2O7−carbon