Single Particle Mechanics

$Multi-scale lithium-ion battery failure mechanisms, linking active-material stability, binder interface behavior, mechanical stress, battery mechanical properties fracture, and external mechanical loading to cell failure.$

2026/08/31

Battery Mechanical Properties: The Root Factor Governing Long-Cycle Life from Single Particles to Full Cells

Abstract Battery mechanical properties represent the fundamental physical factors governing lithium-ion battery degradation, cycle life stability, and operational safety. While electrochemical metrics such as specific capacity and ionic…

Nickel-rich layered cathode research published in Advanced Powder Materials: IEST SPFT2000 Single Particle Force Tester by IEST Instrument measuring single-particle compressive strength (Force-Displacement curves) and micro-cracking behavior for SCNCM and Zr/B modified cathodes across 500 and 1000 cycles, citing IEST Instrument technical support.

2026/08/25

Advanced Powder Materials: IEST SPFT Enable B/Zr Co‑Doping for Lattice Regulation and Internal Stress Relief in Ultra‑High‑Nickel Single‑Crystal Cathodes

Abstract B/Zr co-doping is a lattice-bulk regulation strategy for stabilizing ultra-high-nickel single-crystal cathodes by coordinating bulk lattice reinforcement with surface structural protection. Reported by Wei Shu, Zhou-Shuang Fan,…

Advanced Materials article header on single-crystal Ni-rich cathodes alongside IEST SPFT2000 single particle tester, paper Acknowledgements citing IEST support, and single particle force-displacement curves.

2026/08/06

Advanced Materials: IEST SPFT2000 Quantitatively Stress-Chemical Coupling Drives Multi-Step Phase Transition Degradation in Single-Crystal Ultra-High-Nickel Cathodes

Abstract A research team from Central South University (Prof. Fan Xinming) and Xiamen University (Prof. Yang Yong) has published a landmark study in Advanced Materials (DOI: 10.1002) that…

Figure 1. SEM images of cathode particles under different SOCs

2026/08/05

Crushing Strength Evolution of NCM Cathode Particles at Different SOC

Abstract The effect of SOC on NCM cathode particle crushing strength is both dramatic and nonlinear: as the state of charge increases from 0% to 100%, the single-particle…

2026/07/28

Advanced Materials: Electrochemical Sintering Enables Stress-Lensed Silicon Anodes for Long-Life All-Solid-State Batteries Validated by IEST SPFT2000

Nature Nanotechnology article "Coherent twins for manufacturing thick lithium-rich battery positive electrodes" showing the IEST SPFT2000 single-particle force properties tester used to measure compressive mechanical strength of CTLRO and PLRO cathode particles

2026/07/23

IEST SPFT2000 Enables Nature Nanotechnology Breakthrough: Coherent Twin Boundaries Unlock Ultra‑High Loading Thick Li‑Rich Cathodes

Abstract Coherent twin boundaries (CTBs) are periodic crystallographic interfaces introduced into a Li-rich cathode — specifically a Li-rich layered oxide (LRO) — through staged-temperature calcination, and they address…

2026/06/24

IEST SPECT1000 Powers JACS Breakthrough: NJU & CATL Jointly Unveil Graphite Anode Fast-Charging Bottlenecks, Reshaping the Understanding of Graphite Lithiation Kinetics.

Abstract Graphite lithiation—the process by which lithium ions intercalate into graphite anode layers during battery charging—proceeds through multiple ordered stage transitions that directly determine the rate and safety…

$Crushing force comparison for two silicon-carbon materials SC1 and SC2, two hard carbon materials HC1 and HC2, and one resin carbon RC at different particle sizes measured by IEST SPFT2000 single particle testing system — bar chart showing crushing force (mN or N) for 4.5µm and 8.5µm particles of SC1, SC2, HC1, HC2 and 8.5µm and 15µm particles of RC, demonstrating that crushing force increases with particle size for all three anode material types because larger cross-sectional area and volume require greater external force to fracture$

2026/06/22

Correlation Between Particle Size and Mechanical Properties of Silicon-Carbon Anode Materials

Abstract Anode particle size and crushing strength are inversely correlated: smaller particles consistently achieve higher crushing strength (MPa, resistance per unit area) while larger particles generate higher absolute…

Powder resistivity and compaction density measurement comparison for multiple hard carbon anode materials forsodium-ion batteries using PRCD series - showing pressure-dependent resistivity curves and compaction densitycurves for different hard carbon samples, enabling differentiation of material quality and carbonization uniformity between batches and suppliers

2026/06/16

Multi-Level Sodium-Ion Battery Testing: A Systematic Characterization Framework From Particle to Battery Cell

Abstract Sodium-ion battery testing requires a multi-level characterization approach covering four hierarchical scales — particle, powder, electrode, and cell — because sodium-ion battery performance limitations originate at each…

2026/04/10

Is Cycle Diving Caused by Single Particle Mechanical Failure? A Single Particle Crushing Strength Study on Ni-Rich NCM and Graphite

1. Introduction As lithium-ion batteries become ubiquitous in electric vehicles, energy density, cycle life, safety, and cost remain the primary concerns. During cycling, cathode active materials — particularly…

Figure 3. Single particle crushing strength test curves and crush load data.

2026/04/07

Mechanical Property Evaluation of Porous Carbon and CVD Silicon‑Carbon at Single‑Particle and Powder Levels

1. Introduction Silicon stands out as a highly promising anode material for lithium‑ion batteries due to its theoretical specific capacity of 4200 mAh g⁻¹ and environmental friendliness. However, its practical…

Synergistic Induction of P2/O3 Mixed Phase ByThermal Diffusion Regulation and High‑Entropy Strategy for High‑Performance Layered Cathodes

2026/04/07

Chemical Engineering Journal: IEST SPFT2000 Validates High-Entropy P2/O3 Biphasic Cathode Resilience via Lattice Regulation

Abstract A P2/O3 mixed phase cathode integrates the high structural stability of P2-type domains with the high capacity of O3-type configurations, solving the critical rate-stability trade-off in sodium-ion…

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