Wet-spun fibre electrode in which MXene nanosheets are aligned in a nematic liquid-crystal state, with an MXene/PEDOT:PSS composite version. Du Zhanhong's lab at SIAT: 43.16 ohm mm2 at 1 kHz, 11.81 mC/cm2 charge injection, cortical recording in mouse and deep brain stimulation in rat.
Independent, source-linked catalog sheet. Not a manufacturer-issued datasheet, regulatory decision or instructions for clinical use. Human evidence does not establish approval. Source-specific restrictions, conflicts and missing specifications are retained below.
A carbon-nitride (Ti3C2 MXene) fibre electrode from the Bioelectronic Interface Engineering lab (Du Zhanhong, Institute of Brain Cognition and Brain Disorders, Shenzhen Institute of Advanced Technology, CAS). First author Gou Shuchun; Bi Guoqiang (USTC/SIAT) is a collaborator. Everything here is from SIAT’s Chinese release (1 April 2025), which reports the work as published in Advanced Functional Materials. The paper itself was not read, so fibre diameter, length, insulation and animal numbers are blank.
Identity
Field
Value and source scope
Device
Two fibre electrodes: MXene (MX) and MXene/PEDOT:PSS composite (MPP) [1]
Origin
SIAT brain institute, Du Zhanhong lab; funded in part by the Science and Technology Innovation 2030 brain science program [1]
Interface class
Fibre electrode for recording and stimulation, also used as a skin-surface electrode [1]
Species studied
Mouse (visual cortex recording), rat (deep brain stimulation), body-surface EMG, EEG and ECG [1]
Regulatory status
Research material; no human implant reported [1]
Geometry and architecture
Field
Value and source scope
Form
Fibre; 30 µm interface in the mouse cortical recordings [1]
Recording site, skin version
0.0047 cm2, stated as 1/700 of a commercial Ag/AgCl electrode [1]
Fibre diameter and length
Insulation and channel count
Materials and fabrication
Field
Value and source scope
Process
Strain-controlled two-step coagulation spinning; shear induces nematic ordering of MXene nanosheets, a chitosan coagulation bath dehydrates them into a water-containing gel-like fibre, then strain-controlled solidification [1]
Structure
Nanosheets densely stacked along the fibre axis by van der Waals force; in MPP, PEDOT:PSS keeps its quinoid conductive structure and gives electron paths between MXene layers [1]
Performance envelope
Field
Value and source scope
Impedance
MPP 43.16 ohm mm2 at 1 kHz [1]
Charge storage and injection
Cathodic charge storage and injection about two orders of magnitude above platinum-iridium; 11.81 mC/cm2 injection, described as about 200 times conventional electrodes [1]
Durability
Stable after 100,000 deep-brain stimulation pulses; 93% charge storage retained after 1,000 extreme-voltage cycles [1]
Skin recording
25.78 dB signal-to-noise ratio with EMG, EEG and ECG captured [1]
Brain recording
In mouse visual cortex, checkerboard-evoked local field potentials and single-unit spikes, resolution said to match platinum-iridium [1]
Stimulation
130 Hz subthalamic nucleus stimulation in rat evoked motor-cortex responses [1]
Limits
All figures are SIAT’s own statements of its result. No chronic implant duration, tissue response or comparison table was available without the paper.