▎ 摘　　要

NOVELTY - A rechargeable battery is made by mixing bio-plastic char (BPC) with graphene oxide (GO) in varying ratio (BPC/rGO battery), with 20-25% better endurance realted features than currently most popular lithium ion batteries (LIBs). USE - The process is useful for making rechargeable battery made of BPC mixed with GO in varying ratio (BPC/rGO battery) (claimed) used in military applications, powering of equipment like mobile phones, laptops, electric vehicles or other scenarios where it is difficult to access electricity, where the battery can also be integrated with solar devices to store energy (all claimed). ADVANTAGE - The process: (a) provides 20-25% better endurance realted features than currently most popular LIBs; (b) provides no extra costs when molded into different shapes and sizes; (c) utilizes the household and agro-wastes at minimal costs; (d) uses BPC and GO with indigenous raw materials, which are abundant, cheap and readily available, compared to the raw materials required for making LIBs, which are recognized to be the best existing technology for making rechargeable batteries; (e) does not require import of lithium (Li) and cobalt (Co), as required in case of LIBs, which are recognized to be the best existing technology for making rechargeable batteries, where no import costs are required either on process or product, unlike LIBs, which are required to be imported by the country; (f) provides 7% better 100% SOC, 5% better nominal voltage equal cut off voltage than the existing best technology of LIBs (LCO type); (g) provides three times better gravimetric energy density, and 1.48 times better volumetric energy density than the existing best technology of LIBs (LCO type); (h) provides 1.6 times better gravimetric energy density than LiPo batteries, which are considered to have highest gravimetric energy density among upcoming rechargeable batteries; (h) provides 13.69% better volumetric energy density than lithium polymer (LiPo) batteries, which are considered to have highest gravimetric energy density among upcoming rechargeable batteries; (i) provides portability and ease of carrying as good as the presently best technology of LIBs due to equal weight as that of LIBs; (j) provides portability and ease of carrying due to its cobalt and other toxic metal free constitution, which is an edge over currently most preferred technology of LIBs; (k) can withstand a pressure of 11.6 kPa for 6 hours at ambient temperature, in line with the current best technologies of LIBs; (l) can withstand the temperatures of 72 degrees C (high) and - 40 degrees C (low) for 6 hours each at an interval of 30 minutes; (m) can withstand with logarithmic sweeps of 7-200 Hz and back to 7 Hz in 15 minutes for 12 cycles at least, which is better than the LIBs; (n) does not rupture on a short circuit with total external resistance of less than or equal to 0.1 ohm at 55 degrees C for 1 hour; and (o) provides portability with about 160 times better net economics in terms of Wh per Rupee than all the existing rechargeable battery economics.