TY - JOUR
T1 - Enhancing Li-ion battery anode performances via disorder/order engineering
AU - Zhang, Y.F.
AU - Wang, P.X.
AU - Zheng, T.
AU - Li, D.M.
AU - Li, G.D.
AU - Yue, Yuanzheng
PY - 2018
Y1 - 2018
N2 - The performance of the anode materials is critical to further development of Li-ion batteries. However, the cycling stability and safety performance of anode materials are still far from satisfying. Here we propose a new strategy, i.e., the disorder/order engineering, by which the anode performance of the Li-ion battery can be improved. First, the disordered materials were prepared by vitrifying V
2O
5-TeO
2 (VT) liquids, and then the VT glass powder was mixed with acetylene black and binder to form anode for a lithium ion battery. Second, by subjecting the battery to discharging/charging cycles, the VT glass was partially transformed into ordered phases at the nanoscale, i.e., the disorder-order transition occurred. Even the first cycle of discharging/charging induced the disorder-order transition. The ordered nano-domains and the disordered matrix exert a synergetic effect to facilitate the ionic and electronic transport and to maintain structure stable against discharging/charging. As a consequence, both the capacity and the cycling stability were greatly enhanced, and the structural origin of such enhancement was explored. This study has opened a new way for developing high performance anodes for Li-ion batteries.
AB - The performance of the anode materials is critical to further development of Li-ion batteries. However, the cycling stability and safety performance of anode materials are still far from satisfying. Here we propose a new strategy, i.e., the disorder/order engineering, by which the anode performance of the Li-ion battery can be improved. First, the disordered materials were prepared by vitrifying V
2O
5-TeO
2 (VT) liquids, and then the VT glass powder was mixed with acetylene black and binder to form anode for a lithium ion battery. Second, by subjecting the battery to discharging/charging cycles, the VT glass was partially transformed into ordered phases at the nanoscale, i.e., the disorder-order transition occurred. Even the first cycle of discharging/charging induced the disorder-order transition. The ordered nano-domains and the disordered matrix exert a synergetic effect to facilitate the ionic and electronic transport and to maintain structure stable against discharging/charging. As a consequence, both the capacity and the cycling stability were greatly enhanced, and the structural origin of such enhancement was explored. This study has opened a new way for developing high performance anodes for Li-ion batteries.
KW - Anode
KW - Disorder/order engineering
KW - Li-ion battery
KW - Nanocrystals
UR - http://www.scopus.com/inward/record.url?scp=85046834888&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2018.05.018
DO - 10.1016/j.nanoen.2018.05.018
M3 - Journal article
SN - 2211-2855
VL - 49
SP - 596
EP - 602
JO - Nano Energy
JF - Nano Energy
ER -