(Image credit: Tom's Guide) Much has been said about silicon‑carbon as the future of smartphone battery technology over the past year, especially with its growing adoption by Chinese smartphone manufacturers like Honor, OnePlus, Oppo and Xiaomi. Most of this chatter is centered around its absence from the latest flagship phones by major brands like Apple, Samsung and Google. Despite being some of the biggest smartphone makers in the world, they’re still using the same lithium-ion batteries that have been the norm since the original iPhone debuted in 2007. Lithium-ion batteries have certainly served us well over the past two decades, but flagship battery capacities have hovered around 5,000mAh for years, and we’re simply not seeing meaningful gains anymore. Silicon‑carbon phones, meanwhile, are breaking through that plateau. By swapping the traditional graphite anode for a silicon‑carbon composite, these batteries can pack far more lithium into the same space. The result is a density boost of around 20-40%.…