Advantages and disadvantages of nickel-metal hydride batteries

Ni-MH battery is a new energy battery with higher capacity and cleaner than the nickel-cell battery that appeared after the nickel-cell battery. The materials used in the nickel-metal hydride battery are very environmentally friendly. There is basically no pollution to the environment. What are the advantages of Ni-MH batteries besides larger capacity and no pollution? What are the disadvantages of NiMH batteries? 1. The advantages of nickel-metal hydride batteries compared with lead-acid batteries and nickel-isolated batteries: (1) Higher energy density; (2) The discharge rate can be above 15C; (3) Lead-acid batteries and nickel-cadmium batteries are both environmentally friendly Cause pollution, while nickel-metal hydride batteries are relatively environmentally friendly and basically do not pollute the environment; (4) the battery life is longer than nickel-cadmium and lead-acid batteries; (5) nickel-cadmium batteries have a greater memory effect. Lead-acid batteries are easily vulcanized and passivated, and the memory effect of nickel-hydrogen batteries is very small; 2. The disadvantages of nickel-hydrogen batteries compared with lead-acid batteries and nickel-cadmium batteries: (1) In terms of manufacturing costs, nickel-hydrogen batteries are more expensive; ( 2) The self-discharge performance is relatively poor, that is, the self-discharge current is relatively large; (3) Due to the large energy density, the safety performance is worse than that of nickel-cadmium batteries and lead-acid batteries; 3. Nickel-hydrogen batteries and lithium-ion batteries Advantages compared to batteries (1) In terms of manufacturing cost and technological maturity, Ni-MH batteries are cheaper and more mature in technology; (2) In terms of battery cell consistency, Ni-MH batteries have better consistency than lithium-ion batteries Control, higher consistency; (3) In terms of safety performance, due to the relatively low capacity density of Ni-MH batteries, safety accidents such as smoke and explosion are not prone to occur; (4) In terms of raw materials, Ni-MH batteries have more abundant resources , Lithium-ion batteries are relatively scarce; 4. The disadvantages of nickel-hydrogen batteries compared with lithium-ion batteries (1) In terms of cycle life, nickel-hydrogen batteries are shorter than lithium-ion batteries; (2) Ni-MH batteries in terms of energy density Relatively low, relatively short in battery life; (3) In high-current discharge, that is, rate discharge, lithium-ion batteries can discharge more than 45C, and nickel-hydrogen batteries can achieve about 15C; (4) In space In terms of utilization, the Ni-MH battery is a fixed cylindrical shape, and the Li-ion battery can be a soft-packed aluminum film, which can be diversified in shape and make full use of the space of the product battery compartment; (5) In terms of low temperature performance, The discharge performance of nickel-metal hydride batteries is much worse than that of lithium-ion batteries; (6) In terms of fast charging performance, nickel-metal hydride batteries are far worse than lithium-ion batteries. For example, lithium-ion batteries manufactured by battery production can achieve fast charging of 3 to 5C. Ni-MH batteries are better at 1C fast charging, which means that the charging time of Ni-MH batteries is much longer than that of lithium-ion batteries. The above is a brief overview of the advantages and disadvantages of Ni-MH batteries by battery technical engineers who are doing battery research and development and manufacturing. In fact, the comparison between the advantages and disadvantages of nickel-hydrogen batteries depends on what type of battery they are compared with, rather than simply comparing their own properties. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Button battery model comparison table and related knowledge introduction