3 research outputs found
A Hydrogel Electrolyte toward a Flexible Zinc-Ion Battery and Multifunctional Health Monitoring Electronics
The compact design of an environmentally adaptive battery
and effectors
forms the foundation for wearable electronics capable of time-resolved,
long-term signal monitoring. Herein, we present a one-body strategy
that utilizes a hydrogel as the ionic conductive medium for both flexible
aqueous zinc-ion batteries and wearable strain sensors. The poly(vinyl
alcohol) hydrogel network incorporates nano-SiO2 and cellulose
nanofibers (referred to as PSC) in an ethylene glycol/water mixed
solvent, balancing the mechanical properties (tensile strength of
6 MPa) and ionic diffusivity at −20 °C (2 orders of magnitude
higher than 2 M ZnCl2 electrolyte). Meanwhile, cathode
lattice breathing during the solvated Zn2+ intercalation
and dendritic Zn protrusion at the anode interface are mitigated.
Besides the robust cyclability of the Zn∥PSC∥V2O5 prototype within a wide temperature range (from −20
to 80 °C), this microdevice seamlessly integrates a zinc-ion
battery with a strain sensor, enabling precise monitoring of the muscle
response during dynamic body movement. By employing transmission-mode operando XRD, the self-powered sensor accurately documents
the real-time phasic evolution of the layered cathode and synchronized
strain change induced by Zn deposition, which presents a feasible
solution of health monitoring by the miniaturized electronics
A Hydrogel Electrolyte toward a Flexible Zinc-Ion Battery and Multifunctional Health Monitoring Electronics
The compact design of an environmentally adaptive battery
and effectors
forms the foundation for wearable electronics capable of time-resolved,
long-term signal monitoring. Herein, we present a one-body strategy
that utilizes a hydrogel as the ionic conductive medium for both flexible
aqueous zinc-ion batteries and wearable strain sensors. The poly(vinyl
alcohol) hydrogel network incorporates nano-SiO2 and cellulose
nanofibers (referred to as PSC) in an ethylene glycol/water mixed
solvent, balancing the mechanical properties (tensile strength of
6 MPa) and ionic diffusivity at −20 °C (2 orders of magnitude
higher than 2 M ZnCl2 electrolyte). Meanwhile, cathode
lattice breathing during the solvated Zn2+ intercalation
and dendritic Zn protrusion at the anode interface are mitigated.
Besides the robust cyclability of the Zn∥PSC∥V2O5 prototype within a wide temperature range (from −20
to 80 °C), this microdevice seamlessly integrates a zinc-ion
battery with a strain sensor, enabling precise monitoring of the muscle
response during dynamic body movement. By employing transmission-mode operando XRD, the self-powered sensor accurately documents
the real-time phasic evolution of the layered cathode and synchronized
strain change induced by Zn deposition, which presents a feasible
solution of health monitoring by the miniaturized electronics
A Hydrogel Electrolyte toward a Flexible Zinc-Ion Battery and Multifunctional Health Monitoring Electronics
The compact design of an environmentally adaptive battery
and effectors
forms the foundation for wearable electronics capable of time-resolved,
long-term signal monitoring. Herein, we present a one-body strategy
that utilizes a hydrogel as the ionic conductive medium for both flexible
aqueous zinc-ion batteries and wearable strain sensors. The poly(vinyl
alcohol) hydrogel network incorporates nano-SiO2 and cellulose
nanofibers (referred to as PSC) in an ethylene glycol/water mixed
solvent, balancing the mechanical properties (tensile strength of
6 MPa) and ionic diffusivity at −20 °C (2 orders of magnitude
higher than 2 M ZnCl2 electrolyte). Meanwhile, cathode
lattice breathing during the solvated Zn2+ intercalation
and dendritic Zn protrusion at the anode interface are mitigated.
Besides the robust cyclability of the Zn∥PSC∥V2O5 prototype within a wide temperature range (from −20
to 80 °C), this microdevice seamlessly integrates a zinc-ion
battery with a strain sensor, enabling precise monitoring of the muscle
response during dynamic body movement. By employing transmission-mode operando XRD, the self-powered sensor accurately documents
the real-time phasic evolution of the layered cathode and synchronized
strain change induced by Zn deposition, which presents a feasible
solution of health monitoring by the miniaturized electronics