Primary sources

References

A collection of literature to show how researchers and scientists actually see, measure, and detech lithium dendrites, organized by technique.

Papers
44
Techniques
15
Years covered
2005–2026

Showing all 44 papers across 15 techniques

Category A

Direct Visualization & Imaging

Techniques that let researchers actually see a dendrite — from live video of a growing filament to atomic-scale maps of its structure.

01

In Situ Optical Microscopy

Transparent-window battery cells let researchers watch dendrites grow and dissolve in real time under a light microscope, tracking growth rate and shape as charging conditions change. It's the most accessible of these techniques, though anything smaller than the microscope's resolution stays invisible.

02

Scanning Electron Microscopy (SEM)

A focused electron beam images lithium deposits at far higher magnification than optical microscopy, distinguishing needle-like dendrites from mossy or dense lithium. In situ SEM setups can capture this surface detail as it develops mid-cycle.

03

In Situ Transmission Electron Microscopy (TEM)

TEM fires electrons through an ultra-thin sample to resolve structures at the nanometer scale. Specialized in situ cells let researchers watch individual lithium atoms cluster into the earliest filaments, showing exactly where and how a dendrite gets its start.

04

Cryogenic Electron Microscopy (Cryo-EM)

Lithium is reactive enough that ordinary electron microscopy can damage it before it's ever imaged. Cryo-EM freezes samples first, preserving delicate dendrite structures well enough to resolve their atomic arrangement and the thin protective layer around them.

05

X-ray Imaging and Tomography

X-rays can see dendrites inside a sealed battery without cutting it open, and imaging from multiple angles reconstructs a full 3D picture of where they've grown. Synchrotron phase-contrast techniques push this further, sharpening visibility of lithium's naturally low density.

06

Neutron Imaging & Depth Profiling

Neutrons interact with materials differently than X-rays do, and are especially sensitive to lithium — which makes neutron imaging useful for tracking how lithium redistributes inside a cell and correlating that with dendrite growth and internal shorting.

07

Atomic Force Microscopy (AFM)

AFM scans a surface with an ultra-sharp probe to build a detailed topographic map, and — unlike electron microscopy — it can operate directly in liquid electrolyte. That makes it well suited to watching early-stage lithium deposition and measuring the mechanical properties of the layer around it.

08

NMR Spectroscopy & MRI

Metallic lithium gives off a magnetic-resonance signal that's clearly distinct from the lithium stored safely in electrode materials. That lets NMR measure how much dendritic lithium is present, and MRI map where it sits inside a working cell — all without opening it.

Category B

Indirect Detection & Monitoring

Techniques that infer dendrite growth from the electrical, acoustic, mechanical, or chemical signals a battery gives off, without imaging the dendrite directly.

09

Electrochemical Impedance Spectroscopy (EIS)

EIS probes a battery with small electrical signals across a range of frequencies. As lithium deposits build up, they change surface area, interfacial resistance, and ion transport — shifts that EIS can detect without ever opening the cell, making it a practical early-warning signal.

10

Voltage Relaxation Analysis

When a cell rests after charging, plated lithium partly dissolves back into the electrode — and that leaves a small plateau in the voltage curve. Reading those subtle bumps is one of the cheapest ways to catch plating in a commercial cell, using nothing but the charger's own measurements.

11

Ultrasonic & Acoustic Imaging

Ultrasonic imaging sends high-frequency sound into a battery and reads how it travels through the internal layers. Abnormal lithium plating changes those returning sound waves, letting researchers map plating activity without cutting the cell open — a technique with real potential for in-field battery monitoring.

12

Thickness & Embedded Sensors

Plated lithium takes up space and releases heat. Precise thickness gauges can pick up the tiny swelling it causes, and optical fibers built into a cell can read temperature and pressure from the inside — signals a battery management system could one day act on.

13

Titration Gas Chromatography

Not all lost capacity is the same. By reacting a cycled cell's contents with water and measuring the hydrogen released, researchers can separate isolated "dead" metallic lithium from lithium trapped in the SEI — the clearest accounting of where a battery's lithium actually went.

Category C

Foundations & Reviews

The theory that framed the dendrite problem, and the review articles that best summarize the field.

14

Foundational Theory

Before anyone could film a dendrite at the atomic scale, theory set the terms of the problem: how stiff does a barrier have to be to physically stop lithium from pushing through?

15

Review Articles

The best places to start. Each of these pulls together hundreds of studies on why dendrites form, how they cause failures, and what's being done about it.

Links resolve through DOI to each publisher. Some papers sit behind a paywall; an open-access copy can often be found through a university library or the authors' own pages.