article thumbnail

New silicon-hydrogel composite Li-ion anode material shows long cycle life, easy manufacturability

Green Car Congress

The hydrogel is polymerized in situ , resulting in a well-connected 3D network structure of Si nanoparticles (SiNP) coated by the conducting polymer. A g -1 , the composite electrode exhibited a relatively stable reversible lithium capacity of 1,600 mAh g -1 for 1,000 deep cycles based on the weight of only Si. Click to enlarge.

Li-ion 236
article thumbnail

Stanford, SLAC team cages silicon microparticles in graphene for stable, high-energy anode for Li-ion batteries

Green Car Congress

The graphene cage acts as a mechanically strong and flexible buffer during deep cycling, allowing the silicon microparticles to expand and fracture within the cage while retaining electrical connectivity on both the particle and electrode level. 2015.29.

Li-ion 150
article thumbnail

Proud of its roots

Electric Auto Association

I ordered a controller from a company in California, which used a single power Darlington transistor, and 4 deep cycle 12-volt batteries.” “I cut the frame and extended it, and then a guy from the DEVC donated a golf cart motor,” he explained. “I

article thumbnail

The promise of wireless charging: smaller batteries, longer battery life, fewer charging stations

Charged EVs

We connect high-power communication lines into the DC charging system of the car. Overnight or deep-cycle discharge damages batteries, and high C rates degrade batteries because of the temperature created. times more life expectancy for a battery versus a deep-cycle charging approach. How does that work?