TY - JOUR
T1 - An Exploration of New Energy Storage System: High Energy Density, High Safety, and Fast Charging Lithium Ion Battery
AU - Wu, Yingqiang
AU - Wang, Wenxi
AU - Ming, Jun
AU - Li, Mengliu
AU - Xie, Leqiong
AU - He, Xiangming
AU - Wang, Jing
AU - Liang, Shuquan
AU - Wu, Yuping
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Y.W. and W.W. contributed equally to this work. The research was supported by the funding of National Materials Genome Project (2016YFB0700600), National Natural Science Foundation Committee of China (Distinguished Youth Scientists Project of 51425301, U1601214, 51573013, 51773092, and 51772147), Central South University and King Abdullah University of Science and Technology (KAUST). This work was also financially supported by the National Natural Science Foundation of China (Grant 21521092).
PY - 2018/11/14
Y1 - 2018/11/14
N2 - Rechargeable lithium ion battery (LIB) has dominated the energy market from portable electronics to electric vehicles, but the fast-charging remains challenging. The safety concerns of lithium deposition on graphite anode or the decreased energy density using LiTiO (LTO) anode are incapable to satisfy applications. Herein, the sulfurized polyacrylonitrile (SPAN) is explored for the first time as a high capacity and safer anode in LIBs, in which the high voltage cathode of LiNiCoMnO (NCM-H) is further introduced to configure a new SPAN|NCM-H battery with great fast-charging features. The LIB demonstrates a good stability with a high capacity retention of 89.7% after 100 cycles at a high voltage of 3.5 V (i.e., 4.6 V vs Li/Li). Particularly, the excellent rate capability is confirmed and 78.7% of initial capacity can still be delivered at 4.0C. In addition, 97.6% of the battery capacity can be charged within 2.0C, which is much higher than 80% in current fast-charging application standards. The feature of lithiation potential (>1.0 V vs Li/Li) of SPAN avoids the lithium deposition and improves the safety, while the high capacity over 640 mAh g promises 43.5% higher energy density than that of LTO-based battery, enabling its great competitiveness to conventional LIBs.
AB - Rechargeable lithium ion battery (LIB) has dominated the energy market from portable electronics to electric vehicles, but the fast-charging remains challenging. The safety concerns of lithium deposition on graphite anode or the decreased energy density using LiTiO (LTO) anode are incapable to satisfy applications. Herein, the sulfurized polyacrylonitrile (SPAN) is explored for the first time as a high capacity and safer anode in LIBs, in which the high voltage cathode of LiNiCoMnO (NCM-H) is further introduced to configure a new SPAN|NCM-H battery with great fast-charging features. The LIB demonstrates a good stability with a high capacity retention of 89.7% after 100 cycles at a high voltage of 3.5 V (i.e., 4.6 V vs Li/Li). Particularly, the excellent rate capability is confirmed and 78.7% of initial capacity can still be delivered at 4.0C. In addition, 97.6% of the battery capacity can be charged within 2.0C, which is much higher than 80% in current fast-charging application standards. The feature of lithiation potential (>1.0 V vs Li/Li) of SPAN avoids the lithium deposition and improves the safety, while the high capacity over 640 mAh g promises 43.5% higher energy density than that of LTO-based battery, enabling its great competitiveness to conventional LIBs.
UR - http://hdl.handle.net/10754/630659
UR - https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201805978
UR - http://www.scopus.com/inward/record.url?scp=85056460919&partnerID=8YFLogxK
U2 - 10.1002/adfm.201805978
DO - 10.1002/adfm.201805978
M3 - Article
SN - 1616-301X
VL - 29
SP - 1805978
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 1
ER -
