Battery auxiliary material detection
Test background
Electrode binder is one of the important auxiliary functional materials in lithium-ion batteries. Although it has no capacity and accounts for a small proportion in the battery, it is the main source of the mechanical properties of the entire electrode and has an important impact on the production process of the electrode and the electrochemical properties of the battery.
Lithium-ion battery binder is a polymer compound whose main function is to connect the electrode active material, conductive agent and electrode current collector to make them have overall connectivity, thereby reducing the impedance of the electrode and making the electrode sheet have good mechanical properties and processability.
Requirements for battery electrode binders
An ideal lithium-ion battery electrode binder should have the following properties:
● Good solubility, fast dissolution speed, and high solubility;
● Safe, environmentally friendly, and non-toxic solvents, with water being the best solvent;
● Large molecular weight and small amount of binder;
● Moderate viscosity, easy to homogenize and maintain slurry stability;
● Strong bonding force, and high peeling strength of the prepared electrode;
● Stable electrochemical properties, no redox reaction within the working voltage;
● Resistant to electrolyte corrosion;
● With a certain degree of flexibility, it can withstand the bending of the electrode and the volume change of the active material particles;
● Good conductivity and lithium ion conductivity;
● Wide source and low cost.
Detection range
Auxiliary materials positive and negative electrode binders, conductive carbon black, conductive agent, thickener, etc.
Test items
The main items are: viscosity, pH, impurity metal elements, purity.
Test equipment
The equipment related to the detection and analysis of lithium battery raw materials includes:

Main equipment:

Scanning electron microscope (SEM-EDX)
X-ray diffractometer (XRD)
High-frequency infrared carbon and sulfur tester
Inductively coupled plasma emission spectrometer (ICP-OES)
Inductively coupled plasma mass spectrometer (ICP-MS)
Ion chromatograph (IC)
Gas/liquid chromatography-mass spectrometer (GC-MS)
Fourier transform infrared spectrometer (FTIR)
High performance liquid chromatograph (HPLC)
Thermogravimetric analyzer (TGA)
Differential scanning calorimeter (DSC)

Other equipment:

Specific surface area tester
True density meter
Bulk density meter
Laser particle size analyzer
Conductivity meter
Automatic potentiometric titrator
PH meter
Powder compaction density meter

About Us

Shenzhen LCS Compliance Testing Laboratory Ltd., abbr. for LCS, was founded in 2004 in Shenzhen, LCS is now growing into an independent comprehensive third-party institution which focuses on test & certification. Profound technical background and diligent working attitude decided LCS with an outstanding high starting point from the outset，pioneering spirit and consciousness of keeping pace with the times which predestined the thoroughly tempered course of LCS.

Our Labs

LCS Founding Members have engineering background and had gradually built up Safety Lab, EMC Lab, RF Lab, SAR & HAC Lab, Reliability Lab, Lighting Electrical Lab, LED Lighting Performance Lab, Energy Efficiency Lab, Electronic Cigarette Testing Lab, Chemistry Lab, BQTF, Environmental and Occupational Evaluation Lab, Battery Lab, Toy Lab, Textile Lab, Food and Food Grade Material Lab. The establishment of our comprehensive labs ensure our test and certification scope covers almost all fields, such as Reliability and Safety test, EMC test, Chemical Hazardous Substances test, Material Analysis, Food Contact Material test, Bluetooth Test & Certification, Environment and Occupational Health, Performance test of spare parts of Automobile and so on.

Authorization

Moreover, LCS won many authorized qualifications both domestic and overseas. LCS is recognized as IEC/ISO17025 laboratories accepted by CNAS and NVLAP, accredited by CPSC, CMA, accredited for CQC, ISTA, CBTL, SASO, SABS. Meanwhile LCS become laboratory authorized by TUV, BQTF issued by the SIG. LCS had also signed cooperation agreements with FCC, ISED, ETL, CEC, UL, E-Mark, CETECOM, KTC, SAA Approval and many other authoritative institutions, hence we can provide our clients with efficient and professional service for product test and certification.

Experience

Our RF experience ranges from WLAN (802.11b/g/n/a/ac), Wi-Fi 6E, Bluetooth (802.15.1), ZigBee (802.15.4), Z-Wave, UWB (802.15.3), WiMAX (802.16), SRD, DECT, RFID, NFC, GSM, WCDMA (+HSDPA/HSUPA), LTE, 5G (NR/VoNR/eMTC/eMBB/URLLC),UHF/VHF, WHDI, AM, FM, DAB, DVB, GPS, GNSS, COMPASS, GLONASS and more. The products we are mostly working with are basestations, client adapters, laptops, cordless phones, baby monitors, cellulars, radars, sensors, scanners, receivers, immobilizers, remote controls, etc. Modern products incorporate not often one, but a variety of co-existing technologies.

Welcome

LCS is a reliable party. With more than 20 years hands-on experience in the field of Radio, Telecom, EMC and Safety certification, including country approvals worldwide, we will guide you with our knowledge. You are very welcome!

We will be pleased to assist you with your questions or inquiries, please contact us.