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Description: Unlike almost every other form of technology we use today, batterie

ID: 537450 • Letter: D

Question

Description: Unlike almost every other form of technology we use today, batteries have not improved by an exponential amount. In fact, battery lifetime has only  increased by around a factor of 2-3% per year.

Prompt: What kinds of constraints are causing batteries to mature at a much slower rate than the rest of technology? Postulate what might need to happen to overcome these constraints.

Intel vs. Duracell 16x 14x Processor (MIPS) 12x Improvement Hard Disk (capacity) (compared to 10x year 0) 8x Memory (capacity) 6x 4x Battery (energy stored) 2x 1x Time (years) No Moore's Law in batteries: 2-3%/year growth CS/ECE 3330 Fall 2009

Explanation / Answer

A lot of peer revie journals reveal that not much research has gone into batteries post the eureka moments of lithium ion.

there are multiple problems,
1. It cost you $500 million to set up a small manufacturing line and do all the basic research.
2. htere are so many technologies, from foam batteries to flow batteries no one clear winner is getting most of the funding.