Reduction of external pressure on all‐solid‐state battery using SnO2‐embedded porous carbon by CNT assistance

All‐solid‐state batteries (ASSBs) using non‐flammable inorganic solid electrolyte are expected as a safety energy storage system that exhibits a high energy density. Since external pressure is required to maintain stable interface between active materials and solid electrolyte, the pressure applicab...

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Bibliographic Details
Published in:Nano select 2021-11, Vol.2 (11), p.2121-2125
Main Authors: Notohara, Hiroo, Urita, Koki, Moriguchi, Isamu
Format: Article
Language:English
Subjects:
all‐solid‐state batteries
Carbon
Conductivity
Efficiency
Electrical resistivity
Electrodes
Electrolytes
Energy storage
External pressure
Microscopy
Organic liquids
porous carbons
Single wall carbon nanotubes
single walled carbon nanotubes
SnO2
Solid electrolytes
Solid state
Tin dioxide
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Summary:All‐solid‐state batteries (ASSBs) using non‐flammable inorganic solid electrolyte are expected as a safety energy storage system that exhibits a high energy density. Since external pressure is required to maintain stable interface between active materials and solid electrolyte, the pressure applicable system make the cell modules larger and heavier, and it prevents the practical realization. In the present study, an ASSB system reduced external pressure was achieved by using single‐walled carbon nanotube (SWCNT) assistance. The ASSB electrode mixed with SWCNTs showed high capacity and stable cycle performance even under a coin‐type cell without additional external pressure which is conventionally used on an organic liquid electrolyte system. The unique characters of SWCNT which is high electrical conductivity and self‐supporting force are effective to reduce external pressure of ASSBs. This result opens a new route to design a downsized battery cell. A new concept of all‐solid‐state batteries (ASSBs) is proposed by applying single‐walled carbon nanotube (SWCNT). The unique characters of SWCNT which is high electrical conductivity and self‐supporting force enable to reduce the external pressure for an ASSB system.
ISSN:2688-4011
2688-4011
DOI:10.1002/nano.202100042