Minimal architecture zinc-bromine battery for low cost electrochemical energy storage
Peer-reviewed paper on zinc-bromine energy storage, co-authored from my undergraduate research. DOI 10.1039/C6EE02782B.
Aoi Senju
About
I'm Aoi Senju, co-founder and CEO of Colabra. I was born in Japan, grew up in New York, and live in San Francisco.
Bio
I co-founded Colabra, where our team has built AI software used by research labs and private-equity customers. I helped take the company from an idea to deployed products through fundraising, product direction, and sales. I enjoy the work of building something ambitious and getting it into customers' hands.
Before Colabra, I studied chemical and biological engineering at Princeton, worked in battery development at 24M Technologies, founded and sold Jumpstart Energy, and built the first-generation fraud model we deployed at Mission Lane. Journey tells that story, including the changes in direction.
Research
I co-authored a paper in Energy & Environmental Science on zinc-bromine batteries for energy storage. I made the carbon-foam electrodes and contributed to electrochemical testing, analysis, and materials characterization. I am also a co-inventor on the related patent application.
Design and Optimization of Carbon Foam Electrode for Local Confinement of Bromine in Non-Flowing Single-Chamber Zinc Bromine Batteries
Electrochemical Society meeting abstract on zinc-bromine battery design and optimization.
Membrane-free non-flowing single cell zinc bromine battery with bromine-trapping composite carbon foam electrode
Co-inventor on US20200036046A1, assigned to Princeton University. Published January 30, 2020; an application, not a granted patent.
Running
I ran a 2:58:34 marathon at the California International Marathon in December 2025. My first marathon, in Providence in 2017, took 4:19:29.
In 2025, I finished Ironman 70.3 Victoria in 5:14:51.
Running
Marathon progression
Six recorded marathons, from 2017 to 2025. Downward is faster.
4:19:29
9:54 / mi · Providence Marathon · 2017
2:58:34
6:49 / mi · California International Marathon · 2025
Hover, tap, or focus a dot for the race details. All results are also listed below. The chart moves from 9:54 / mi to 6:49 / mi.
Downward is faster. The dashed line shows the long-term trend.
All 6 marathon results
| Date | Race | Time |
|---|---|---|
| Providence Marathon | 4:19:29 | |
| New York City Marathon | 3:29:56 | |
| San Francisco Marathon | 3:52:41 | |
| California International Marathon | 3:06:47 | |
| Tokyo Marathon | 3:27:30 | |
| California International Marathon | 2:58:34 |
Piano
I performed at Carnegie Hall as a teenager. I spent about fifteen years studying classical piano, including competitions, summers at music festivals, and time studying in Valencia, Spain.
When I got to Princeton, I stopped organizing every day around piano so I could make room for research and other interests, but am still proud of how far I was able to develop as a musician.
