TY - JOUR

T1 - A Biomass‐Based Integral Approach Enables Li‐S Full Pouch Cells with Exceptional Power Density and Energy Density

AU - Liu, Yuping

AU - Barnscheidt, Yvo

AU - Peng, Manhua

AU - Bettels, Frederik

AU - He, Tao

AU - Ding, Fei

AU - Zhang, Lin

N1 - Funding Information: The authors would like to thank Prof. Armin Feldhoff for providing the SEM, TEM, and XRD facilities.

PY - 2021/7/21

Y1 - 2021/7/21

N2 - Lithium-sulfur (Li-S) batteries, as part of the post-lithium-ion batteries (post-LIBs), are expected to deliver significantly higher energy densities. Their power densities, however, are today considerably worse than that of the LIBs, limiting the Li-S batteries to very few specific applications that need low power and long working time. With the rapid development of single cell components (cathode, anode, or electrolyte) in the last few years, it is expected that an integrated approach can maximize the power density without compromising the energy density in a Li-S full cell. Here, this goal is achieved by using a novel biomass porous carbon matrix (PCM) in the anode, as well as N-Co9S8 nanoparticles and carbon nanotubes (CNTs) in the cathode. The authors' approach unlocks the potential of the electrodes and enables the Li-S full pouch cells with unprecedented power densities and energy densities (325 Wh kg−1 and 1412 W kg−1, respectively). This work addresses the problem of low power densities in the current Li-S technology, thus making the Li-S batteries a strong candidate in more application scenarios.

AB - Lithium-sulfur (Li-S) batteries, as part of the post-lithium-ion batteries (post-LIBs), are expected to deliver significantly higher energy densities. Their power densities, however, are today considerably worse than that of the LIBs, limiting the Li-S batteries to very few specific applications that need low power and long working time. With the rapid development of single cell components (cathode, anode, or electrolyte) in the last few years, it is expected that an integrated approach can maximize the power density without compromising the energy density in a Li-S full cell. Here, this goal is achieved by using a novel biomass porous carbon matrix (PCM) in the anode, as well as N-Co9S8 nanoparticles and carbon nanotubes (CNTs) in the cathode. The authors' approach unlocks the potential of the electrodes and enables the Li-S full pouch cells with unprecedented power densities and energy densities (325 Wh kg−1 and 1412 W kg−1, respectively). This work addresses the problem of low power densities in the current Li-S technology, thus making the Li-S batteries a strong candidate in more application scenarios.

KW - Li-S pouch cells

KW - biomass-based porous carbon matrices

KW - dendrite-free Li anodes

KW - electric vehicles/grid storage

KW - superior energy/power densities

UR - http://www.scopus.com/inward/record.url?scp=85106288173&partnerID=8YFLogxK

U2 - 10.1002/advs.202101182

DO - 10.1002/advs.202101182

M3 - Article

VL - 8

SP - 2101182

JO - Advanced science

JF - Advanced science

SN - 2198-3844

IS - 14

M1 - 2101182

ER -