TY - JOUR
T1 - Miktoarm PEG-PCL Star Copolymer (AB6) Blend Composite Solid Electrolyte for All-Solid-State Lithium Metal Battery
AU - Li, Yuhan
AU - Zhu, Kaizheng
AU - Bu, Huaitian
AU - Fu, Zhenyu
AU - Kjøniksen, Anna Lena
AU - Nyström, Bo
AU - Ding, Shujiang
N1 - Publisher Copyright:
© 2023 American Chemical Society
PY - 2023/10/10
Y1 - 2023/10/10
N2 - A series of AB6 type-7 miktoarm star copolymers consisting of poly(ethylene glycol) (PEG) as the A arm and poly(ϵ-caprolactone) (PCL) as the B arm are synthesized by controlled ring-opening polymerization of the ϵ-caprolactone monomer. The chemical structure is confirmed and characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopies. The synthesized PEG-PCL star copolymers (PAB6) (Mn = 8400, 16,820, and 32,480) with arms of different lengths are introduced into the poly(ethylene oxide)-based solid electrolyte system. Moreover, the electrochemical, mechanical, and thermochemical properties of composite solid polymer electrolytes are enhanced by adding three miktoarm PEG-PCL star copolymers (referred to as PAB6-1, PAB6-2, and PAB6-3). The unique low-molecular-weight miktoarm copolymers with a central etheroxy group and branched carboxyl groups interact with poly(ethylene oxide) segments and lithium ions, enhancing the segment mobility of the polymer and lithium-ion transfer. Therefore, all-solid-state lithium metal batteries by the serial miktoarm star copolymer composite electrolytes display a high capacity retention of 128.1 mAh g-1 after 390 cycles.
AB - A series of AB6 type-7 miktoarm star copolymers consisting of poly(ethylene glycol) (PEG) as the A arm and poly(ϵ-caprolactone) (PCL) as the B arm are synthesized by controlled ring-opening polymerization of the ϵ-caprolactone monomer. The chemical structure is confirmed and characterized by nuclear magnetic resonance (NMR) and Fourier transform infrared (FT-IR) spectroscopies. The synthesized PEG-PCL star copolymers (PAB6) (Mn = 8400, 16,820, and 32,480) with arms of different lengths are introduced into the poly(ethylene oxide)-based solid electrolyte system. Moreover, the electrochemical, mechanical, and thermochemical properties of composite solid polymer electrolytes are enhanced by adding three miktoarm PEG-PCL star copolymers (referred to as PAB6-1, PAB6-2, and PAB6-3). The unique low-molecular-weight miktoarm copolymers with a central etheroxy group and branched carboxyl groups interact with poly(ethylene oxide) segments and lithium ions, enhancing the segment mobility of the polymer and lithium-ion transfer. Therefore, all-solid-state lithium metal batteries by the serial miktoarm star copolymer composite electrolytes display a high capacity retention of 128.1 mAh g-1 after 390 cycles.
UR - https://www.scopus.com/pages/publications/85174860854
U2 - 10.1021/acs.macromol.3c01621
DO - 10.1021/acs.macromol.3c01621
M3 - 文章
AN - SCOPUS:85174860854
SN - 0024-9297
VL - 56
SP - 7921
EP - 7930
JO - Macromolecules
JF - Macromolecules
IS - 19
ER -