TY - JOUR
T1 - From wood pulp fibers to tubular SiO2/C composite as anode for Li-ion battery: in-situ regulation of cellulose microfibrils by alkali solution
AU - Wang, Xiaodi
AU - Liu, Xiuzhi
AU - Ren, Xiaoli
AU - Luo, Kaisheng
AU - Xu, Wenyang
AU - Hou, Qingxi
AU - Liu, Wei
N1 - 3pk
Post-print, 24 mån embargo
mail till Wenyang 15.2.22021 /LN
PY - 2020/12/15
Y1 - 2020/12/15
N2 - The microfibrils of wood pulp fibers in plant cell wall with an intrinsically regular and interlaced arrangement offer a stable porous structure. They could also provide outstanding mechanical strength and promote conductivity for Si-based materials. Upon these benefits, a method using wood pulp fibers to fabricate SiO2/C composite is proposed. In this work, the alkali pretreatment interfering hydrogen bonds in wood pulp fibers in situ results in an enlarged spatial distance among cellulose microfibrils, exposing more free-surface. This empowered homogenously inlaid SiO2 distribution along the carbon skeleton in the subsequent carbonization process. A highly mesoporous and the tubular morphology was achieved in the fabricated SiO2/C composite. Furthermore, a high initial coulombic efficiency of 84.9 % and reversible specific capacity of 1130 mA h g⁻¹ with a coulombic efficiency of 98.8 % after 200 cycles at a current density of 0.1 A g⁻¹ was obtained.
AB - The microfibrils of wood pulp fibers in plant cell wall with an intrinsically regular and interlaced arrangement offer a stable porous structure. They could also provide outstanding mechanical strength and promote conductivity for Si-based materials. Upon these benefits, a method using wood pulp fibers to fabricate SiO2/C composite is proposed. In this work, the alkali pretreatment interfering hydrogen bonds in wood pulp fibers in situ results in an enlarged spatial distance among cellulose microfibrils, exposing more free-surface. This empowered homogenously inlaid SiO2 distribution along the carbon skeleton in the subsequent carbonization process. A highly mesoporous and the tubular morphology was achieved in the fabricated SiO2/C composite. Furthermore, a high initial coulombic efficiency of 84.9 % and reversible specific capacity of 1130 mA h g⁻¹ with a coulombic efficiency of 98.8 % after 200 cycles at a current density of 0.1 A g⁻¹ was obtained.
U2 - 10.1016/j.indcrop.2020.113022
DO - 10.1016/j.indcrop.2020.113022
M3 - Article
SN - 0926-6690
VL - 158
JO - Industrial Crops and Products
JF - Industrial Crops and Products
M1 - 113022
ER -