TY - JOUR
T1 - A Li+ conductive metal organic framework electrolyte boosts the high-temperature performance of dendrite-free lithium batteries
AU - Chen, Nan
AU - Li, Yuejiao
AU - Dai, Yujuan
AU - Qu, Wenjie
AU - Xing, Yi
AU - Ye, Yusheng
AU - Wen, Ziyue
AU - Guo, Cui
AU - Wu, Feng
AU - Chen, Renjie
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2019
Y1 - 2019
N2 - Conventional electrolytes of Li metal batteries are highly flammable and volatile, which accelerates the consumption of lithium metal at high temperatures, resulting in catastrophic fires or explosions. Herein, a Li+ conductive metal organic framework electrolyte was prepared to enable dendrite-free Li deposition at high temperatures. This electrolyte stabilizes the electrolyte/electrode interface by promoting the transport of lithium ions and suppresses the formation of Li dendrites by forming a particle-rich coating over the anode during repeated Li plating/stripping. Benefitting from strong interactions between TFSI− anions and the metal atoms of the MOF, the electrolyte demonstrates excellent electrochemical properties, which allows Li/Li cells to operate at 150 °C for more than 1200 h without major voltage fluctuations, markedly increasing the stability of Li metal at high temperatures. Furthermore, Li/LiFePO4, LiNi0.33Mn0.33Co0.33O2, Li/LiNi0.8Mn0.1Co0.1O2 and Li/Li4Ti5O12 cells exhibit excellent performance at high temperatures.
AB - Conventional electrolytes of Li metal batteries are highly flammable and volatile, which accelerates the consumption of lithium metal at high temperatures, resulting in catastrophic fires or explosions. Herein, a Li+ conductive metal organic framework electrolyte was prepared to enable dendrite-free Li deposition at high temperatures. This electrolyte stabilizes the electrolyte/electrode interface by promoting the transport of lithium ions and suppresses the formation of Li dendrites by forming a particle-rich coating over the anode during repeated Li plating/stripping. Benefitting from strong interactions between TFSI− anions and the metal atoms of the MOF, the electrolyte demonstrates excellent electrochemical properties, which allows Li/Li cells to operate at 150 °C for more than 1200 h without major voltage fluctuations, markedly increasing the stability of Li metal at high temperatures. Furthermore, Li/LiFePO4, LiNi0.33Mn0.33Co0.33O2, Li/LiNi0.8Mn0.1Co0.1O2 and Li/Li4Ti5O12 cells exhibit excellent performance at high temperatures.
UR - http://www.scopus.com/inward/record.url?scp=85064426290&partnerID=8YFLogxK
U2 - 10.1039/c8ta12539b
DO - 10.1039/c8ta12539b
M3 - Article
AN - SCOPUS:85064426290
SN - 2050-7488
VL - 7
SP - 9530
EP - 9536
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 16
ER -