In Situ Raman Battery Test Cell (Three-Electrode System) Model: RM-3E

Description

Product Overview

The RM-3E is a sealed three-electrode battery test cell integrating in situ Raman measurement with electrochemical cycling. A spring-loaded lithium-wire reference electrode is connected to an independent middle current collector, forming a dedicated reference-electrode circuit for three-electrode testing. Its layered current-collector structure, adjustable spring compression, and O-ring sealing support stable electrode contact, reproducible assembly, and in situ investigation of battery materials during charge/discharge cycling.

Key Features

• Lithium-Wire Reference Electrode: Spring-loaded contact connects the lithium wire to the middle current collector, establishing the reference-electrode circuit.
• Adjustable Spring Loading: Allows the applied load to be adjusted for comparative evaluation under different compression conditions.
• Glovebox-Compatible Sealing: The cell can be assembled in a glovebox and subsequently operated under ambient conditions with O-ring sealing.

Technical Specifications

Electrode configuration	Three-electrode system
Sample-to-window distance	< 2 mm
Optical window diameter	Ø20 mm
Effective optical window diameter	Ø12 mm
Optical window material	Sapphire
Cell body material	Ti
Insulation material	PEEK
Current collector tab	Gold-plated copper
Cell body dimensions	Ø70 mm × H24 mm
Reference electrode	Lithium wire (user provide)

Instrument Compatibility

• Raman System Compatibility: Compatible with commercial Raman microscope systems, including Renishaw (inVia) and HORIBA (LabRAM Soleil Nano).
• Electrochemical Testing Compatibility: Compatible with commercial electrochemical workstations, including Bio-Logic (VSP-3E), and battery testing systems, including LAND (CT3004A).

Published Application Example

In Situ Raman Tracking of Sodium Storage in Hard Carbon: The cell used in this study, supplied by Beyond Battery under product code RM-3E, was coupled with a HORIBA LabRAM Soleil Nano confocal Raman spectrometer to compare pristine T2 and Bi/N-modified T2-BiN hard-carbon anodes during sodium-ion battery cycling. In situ spectra revealed a pronounced G-band redshift and reduced D-band intensity for T2-BiN, indicating enhanced Na⁺ intercalation-induced C–C bond strain and increased Na⁺ adsorption at defect sites.

Reproduced from Liu, L. et al. Chem. Sci. 2025, 16, 17630–17639. CC BY 4.0.

Demonstrated RM-3E Capabilities

• In situ Raman monitoring during battery charge/discharge cycling
• Comparative tracking of D- and G-band evolution.
• Identification of Na⁺ intercalation and defect-site adsorption.

Product Identification Note: RM‑3E is the Beyond Battery product code for the same cell reported in the cited
publications. The original articles use a different product designation. This study used the 2025 version of the RM‑3E; the current model may differ in design and specifications.