1. Article Abstract Volume change of lithium metal anodes (LMAs) during plating/stripping produces evolving mechanical stress that drives SEI fracture, particle detachment and dendrite growth. This study proposes and validates an alternative approach: convert the unavoidable stress variations during…
1. Abstract Li plating (lithium metal deposition) is both an accelerator of capacity fade and a latent safety hazard in lithium-ion pouch cells. We demonstrate a fast, non-destructive method that correlates intermittent low-rate capacity loss with in-situ thickness expansion measured…
1. Preface Electrolyte is one of the four main materials of lithium-ion batteries, known as the “blood” of lithium-ion batteries. Electrolyte is mainly composed of organic solvents, electrolyte lithium salts, and different types of electrolyte additives. The organic solvent is…
Abstract Formation temperature is a key process parameter in lithium-ion cell manufacturing that directly controls both the chemical composition of the SEI film (solid electrolyte interphase) on the negative electrode and the timing and magnitude of cell volume expansion during…
Abstract We report an in-situ study of Gas Generation and open-circuit voltage (OCV) behavior for lithium-ion cells stored at 85 °C across five states of charge (SOC). Using the IEST GVM2200 gas generation volume monitor, we tracked time-resolved cell volume…
1. Background In recent years, people have placed higher and higher requirements on battery life, safety, fast charging and other performance. Silicon-based anode electrode materials are new high-performance lithium-ion battery anode electrode materials due to their advantages such as high…
1. Electrode Uniformity In the manufacturing process of energy storage batteries, the uniformity of lithium battery electrode coating is an important parameter to be monitored in the early stages of cell production. It is also one of the crucial properties…
Abstract Battery electrode coating uniformity — the consistency of coating thickness, surface density, and conductive network distribution across both the A-side and B-side of a double-sided electrode — is a critical quality parameter that directly affects current distribution, cycle life,…
1. Abstract We present a comparative study of electrode conductivity and compressive behavior for single-sided and double-sided electrodes fabricated from NCM, LCO, and graphite (GR) active materials. Using a IEST BER2500 electrode resistance tester, we measured through-thickness resistance and thickness…
1. Preface In this paper, four batches of gas phase silicon-carbon negative electrode wafers were produced continuously using the same deposition process and coating process, the ion conductivity of the finished wafers was evaluated by using the Multi-Channel Ion Conductivity…
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